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spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/README_CN.md Normal file
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# Dubbo Spring Cloud 示例工程
## 快速开始
### 定义 Dubbo 服务接口
Dubbo 服务接口是服务提供方与消费方的远程通讯契约，通常由普通的 Java 接口（interface）来声明，如 `EchoService` 接口：
```java
public interface EchoService {
String echo(String message);
}
```
为了确保契约的一致性，推荐的做法是将 Dubbo 服务接口打包在第二方或者第三方的 artifact（jar）中，如以上接口就存放在
artifact [spring-cloud-dubbo-sample-api](https://github.com/alibaba/spring-cloud-alibaba/tree/master/spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-sample-api) 之中。
对于服务提供方而言，不仅通过依赖 artifact 的形式引入 Dubbo 服务接口，而且需要将其实现。对应的服务消费端，同样地需要依赖该 artifact，
并以接口调用的方式执行远程方法。接下来进一步讨论怎样实现 Dubbo 服务提供方和消费方。
### 实现 Dubbo 服务提供方
#### 初始化 `spring-cloud-dubbo-server-sample` Maven 工程
首先，创建 `artifactId` 名为 `spring-cloud-dubbo-server-sample` 的 Maven 工程，并在其 `pom.xml` 文件中增添
Dubbo Spring Cloud 必要的依赖：
```xml
<dependencies>
<!-- Sample API -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dubbo-sample-api</artifactId>
<version>${project.version}</version>
</dependency>
<!-- Spring Boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
<!-- Dubbo Spring Cloud Starter -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
</dependency>
<!-- Spring Cloud Nacos Service Discovery -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
</dependencies>
```
以上依赖 artifact 说明如下：
- `spring-cloud-dubbo-sample-api` : 提供 `EchoService` 接口的 artifact
- `spring-boot-actuator` : Spring Boot Production-Ready artifact，间接引入 `spring-boot` artifact
- `spring-cloud-starter-dubbo` : Dubbo Spring Cloud Starter `artifact`，间接引入 `dubbo-spring-boot-starter` 等 artifact
- `spring-cloud-starter-alibaba-nacos-discovery` : Nacos Spring Cloud 服务注册与发现 `artifact`
值得注意的是，以上 artifact 未指定版本(version)，因此，还需显示地声明 `<dependencyManagement>` :
```xml
<dependencyManagement>
<dependencies>
<!-- Spring Cloud Alibaba dependencies -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>0.9.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
```
> 以上完整的 Maven 依赖配置，请参考 `spring-cloud-dubbo-server-sample` [`pom.xml`](spring-cloud-dubbo-server-sample/pom.xml) 文件
完成以上步骤之后，下一步则是实现 Dubbo 服务
#### 实现 Dubbo 服务
`EchoService` 作为暴露的 Dubbo 服务接口，服务提供方 `spring-cloud-dubbo-server-sample` 需要将其实现：
```java
@org.apache.dubbo.config.annotation.Service
class EchoServiceImpl implements EchoService {
@Override
public String echo(String message) {
return "[echo] Hello, " + message;
}
}
```
其中，`@org.apache.dubbo.config.annotation.Service` 是 Dubbo 服务注解，仅声明该 Java 服务（本地）实现为 Dubbo 服务。
因此，下一步需要将其配置 Dubbo 服务（远程）。
#### 配置 Dubbo 服务提供方
在暴露 Dubbo 服务方面，推荐开发人员外部化配置的方式，即指定 Java 服务实现类的扫描基准包。
> Dubbo Spring Cloud 继承了 Dubbo Spring Boot 的外部化配置特性，也可以通过标注 `@DubboComponentScan` 来实现基准包扫描。
同时，Dubbo 远程服务需要暴露网络端口，并设定通讯协议，完整的 YAML 配置如下所示：
```yaml
dubbo:
scan:
# dubbo 服务扫描基准包
base-packages: com.alibaba.cloud.dubbo.bootstrap
protocol:
# dubbo 协议
name: dubbo
# dubbo 协议端口（ -1 表示自增端口，从 20880 开始）
port: -1
registry:
# 挂载到 Spring Cloud 注册中心
address: spring-cloud://localhost
spring:
application:
# Dubbo 应用名称
name: spring-cloud-alibaba-dubbo-server
main:
# Spring Boot 2.1 需要设定
allow-bean-definition-overriding: true
cloud:
nacos:
# Nacos 服务发现与注册配置
discovery:
server-addr: 127.0.0.1:8848
```
以上 YAML 内容，上半部分为 Dubbo 的配置：
- `dubbo.scan.base-packages` : 指定 Dubbo 服务实现类的扫描基准包
- `dubbo.protocol` : Dubbo 服务暴露的协议配置，其中子属性 `name` 为协议名称，`port` 为协议端口（ -1 表示自增端口，从 20880 开始）
- `dubbo.registry` : Dubbo 服务注册中心配置，其中子属性 `address` 的值 "spring-cloud://localhost"，说明挂载到 Spring Cloud 注册中心
> 当前 Dubbo Spring Cloud 实现必须配置 `dubbo.registry.address = spring-cloud://localhost`，下一个版本将其配置变为可选
（参考 [issue #592](https://github.com/alibaba/spring-cloud-alibaba/issues/592)），
> 并且支持传统 Dubbo 协议的支持（参考 [issue #588](https://github.com/alibaba/spring-cloud-alibaba/issues/588)）
下半部分则是 Spring Cloud 相关配置：
- `spring.application.name` : Spring 应用名称，用于 Spring Cloud 服务注册和发现。
> 该值在 Dubbo Spring Cloud 加持下被视作 `dubbo.application.name`，因此，无需再显示地配置 `dubbo.application.name`
- `spring.main.allow-bean-definition-overriding` : 在 Spring Boot 2.1 以及更高的版本增加该设定，
因为 Spring Boot 默认调整了 Bean 定义覆盖行为。（推荐一个好的 Dubbo 讨论 [issue #3193](https://github.com/apache/dubbo/issues/3193#issuecomment-474340165)）
- `spring.cloud.nacos.discovery` : Nacos 服务发现与注册配置，其中子属性 server-addr 指定 Nacos 服务器主机和端口
> 以上完整的 YAML 配置文件，请参考 `spring-cloud-dubbo-server-sample` [`bootstrap.yaml`](spring-cloud-dubbo-server-sample/src/main/resources/bootstrap.yaml) 文件
完成以上步骤后，还需编写一个 Dubbo Spring Cloud 引导类。
#### 引导 Dubbo Spring Cloud 服务提供方应用
Dubbo Spring Cloud 引导类与普通 Spring Cloud 应用并无差别，如下所示：
```java
@EnableDiscoveryClient
@EnableAutoConfiguration
public class DubboSpringCloudServerBootstrap {
public static void main(String[] args) {
SpringApplication.run(DubboSpringCloudServerBootstrap.class);
}
}
```
在引导 `DubboSpringCloudServerBootstrap` 之前，请提前启动 Nacos 服务器。
当 `DubboSpringCloudServerBootstrap` 启动后，将应用 `spring-cloud-dubbo-server-sample` 将出现在 Nacos 控制台界面。
当 Dubbo 服务提供方启动后，下一步实现一个 Dubbo 服务消费方。
### 实现 Dubbo 服务消费方
由于 Java 服务就 `EchoService`、服务提供方应用 `spring-cloud-dubbo-server-sample` 以及 Nacos 服务器均已准备完毕。Dubbo 服务消费方
只需初始化服务消费方 Maven 工程 `spring-cloud-dubbo-client-sample` 以及消费 Dubbo 服务。
#### 初始化 `spring-cloud-dubbo-client-sample` Maven 工程
与服务提供方 Maven 工程类，需添加相关 Maven 依赖：
```xml
<dependencyManagement>
<dependencies>
<!-- Spring Cloud Alibaba dependencies -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>0.9.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- Sample API -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dubbo-sample-api</artifactId>
<version>${project.version}</version>
</dependency>
<!-- Spring Boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
<!-- Dubbo Spring Cloud Starter -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
</dependency>
<!-- Spring Cloud Nacos Service Discovery -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
</dependencies>
```
与应用 `spring-cloud-dubbo-server-sample` 不同的是，当前应用依赖 `spring-boot-starter-web`，表明它属于 Web Servlet 应用。
> 以上完整的 Maven 依赖配置，请参考 `spring-cloud-dubbo-client-sample` [`pom.xml`](spring-cloud-dubbo-client-sample/pom.xml) 文件
#### 配置 Dubbo 服务消费方
Dubbo 服务消费方配置与服务提供方类似，当前应用 `spring-cloud-dubbo-client-sample` 属于纯服务消费方，因此，所需的外部化配置更精简：
```yaml
dubbo:
registry:
# 挂载到 Spring Cloud 注册中心
address: spring-cloud://localhost
cloud:
subscribed-services: spring-cloud-alibaba-dubbo-server
spring:
application:
# Dubbo 应用名称
name: spring-cloud-alibaba-dubbo-client
main:
# Spring Boot 2.1 需要设定
allow-bean-definition-overriding: true
cloud:
nacos:
# Nacos 服务发现与注册配置
discovery:
server-addr: 127.0.0.1:8848
```
对比应用 `spring-cloud-dubbo-server-sample`，除应用名称 `spring.application.name` 存在差异外，`spring-cloud-dubbo-client-sample`
新增了属性 `dubbo.cloud.subscribed-services` 的设置。并且该值为服务提供方应用 "spring-cloud-dubbo-server-sample"。
- `dubbo.cloud.subscribed-services` : 用于服务消费方订阅服务提供方的应用名称的列表，若需订阅多应用，使用 "," 分割。
不推荐使用默认值为 "*"，它将订阅所有应用。
> 当应用使用属性 `dubbo.cloud.subscribed-services` 默认值时，日志中将会输出一行警告：
> > Current application will subscribe all services(size:x) in registry, a lot of memory and CPU cycles may be used,
> > thus it's strongly recommend you using the externalized property 'dubbo.cloud.subscribed-services' to specify the services
由于当前应用属于 Web 应用，它会默认地使用 8080 作为 Web 服务端口，如果需要自定义，可通过属性 `server.port` 调整。
> 以上完整的 YAML 配置文件，请参考 `spring-cloud-dubbo-client-sample` [`bootstrap.yaml`](spring-cloud-dubbo-client-sample/src/main/resources/bootstrap.yaml) 文件
#### 引导 Dubbo Spring Cloud 服务消费方应用
为了减少实现步骤，以下引导类将 Dubbo 服务消费以及引导功能合二为一：
```java
@EnableDiscoveryClient
@EnableAutoConfiguration
@RestController
public class DubboSpringCloudClientBootstrap {
@Reference
private EchoService echoService;
@GetMapping("/echo")
public String echo(String message) {
return echoService.echo(message);
}
public static void main(String[] args) {
SpringApplication.run(DubboSpringCloudClientBootstrap.class);
}
}
```
不仅如此，`DubboSpringCloudClientBootstrap` 也作为 REST Endpoint，通过暴露 `/echo` Web 服务，消费 Dubbo `EchoService` 服务。因此，
可通过 `curl` 命令执行 HTTP GET 方法：
```
$ curl http://127.0.0.1:8080/echo?message=%E5%B0%8F%E9%A9%AC%E5%93%A5%EF%BC%88mercyblitz%EF%BC%89
```
HTTP 响应为：
```
[echo] Hello, 小马哥（mercyblitz）
```
以上结果说明应用 `spring-cloud-dubbo-client-sample` 通过消费 Dubbo 服务，返回服务提供方 `spring-cloud-dubbo-server-sample`
运算后的内容。
以上操作就一套完整的 Dubbo 服务提供方和消费方的运用，更多的详情请直接参考模块：
- [`spring-cloud-dubbo-server-sample` ](spring-cloud-dubbo-server-sample)
- [`spring-cloud-dubbo-client-sample`](spring-cloud-dubbo-client-sample)
## 模块说明
- [spring-cloud-dubbo-sample-api](spring-cloud-dubbo-sample-api)：API 模块，存放 Dubbo 服务接口和模型定义
- [spring-cloud-dubbo-provider-web-sample](spring-cloud-dubbo-provider-web-sample)：Dubbo Spring Cloud 服务提供方示例（Web 应用）
- [spring-cloud-dubbo-provider-sample](spring-cloud-dubbo-provider-sample)：Dubbo Spring Cloud 服务提供方示例（非 Web 应用）
- [spring-cloud-dubbo-consumer-sample](spring-cloud-dubbo-consumer-sample)：Dubbo Spring Cloud 服务消费方示例
- [spring-cloud-dubbo-servlet-gateway](spring-cloud-dubbo-servlet-gateway-sample)：Dubbo Spring Cloud Servlet 网关简易实现示例

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spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/pom.xml
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@@ -10,15 +10,20 @@
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dubbo-examples</artifactId>
<version>2.0.1.RELEASE</version>
<name>Spring Cloud Alibaba Dubbo Examples</name>
<packaging>pom</packaging>
<modules>
<module>spring-cloud-dubbo-sample-api</module>
<module>spring-cloud-dubbo-server-sample</module>
<module>spring-cloud-dubbo-client-sample</module>
<module>spring-cloud-dubbo-provider-sample</module>
<module>spring-cloud-dubbo-consumer-sample</module>
<module>spring-cloud-dubbo-provider-web-sample</module>
<module>spring-cloud-dubbo-servlet-gateway-sample</module>
</modules>
</project>

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spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-client-sample/pom.xml Normal file
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@@ -0,0 +1,58 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dubbo-examples</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-dubbo-client-sample</artifactId>
<name>Spring Cloud Dubbo Client Sample</name>
<version>2.0.1.RELEASE</version>
<dependencies>
<!-- Sample API -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-dubbo-sample-api</artifactId>
<version>${project.version}</version>
</dependency>
<!-- Spring Boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
<!-- Dubbo Spring Cloud Starter -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
</dependency>
<!-- Spring Cloud Nacos Service Discovery -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

48
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-client-sample/src/main/java/com/alibaba/cloud/dubbo/bootstrap/DubboSpringCloudClientBootstrap.java Normal file
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@@ -0,0 +1,48 @@
/*
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.bootstrap;
import com.alibaba.cloud.dubbo.service.EchoService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* Dubbo Spring Cloud Client Bootstrap.
*/
@EnableDiscoveryClient
@EnableAutoConfiguration
@RestController
public class DubboSpringCloudClientBootstrap {
@Reference
private EchoService echoService;
@GetMapping("/echo")
public String echo(String message) {
return echoService.echo(message);
}
public static void main(String[] args) {
SpringApplication.run(DubboSpringCloudClientBootstrap.class);
}
}

15
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-client-sample/src/main/resources/bootstrap.yaml Normal file
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@@ -0,0 +1,15 @@
dubbo:
registry:
address: spring-cloud://localhost
cloud:
subscribed-services: spring-cloud-alibaba-dubbo-server
spring:
application:
name: spring-cloud-alibaba-dubbo-client
main:
allow-bean-definition-overriding: true
cloud:
nacos:
discovery:
server-addr: 127.0.0.1:8848

100
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-consumer-sample/src/main/java/com/alibaba/cloud/dubbo/bootstrap/DubboSpringCloudConsumerBootstrap.java
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.bootstrap;
import java.util.HashMap;
@@ -22,7 +23,6 @@ import com.alibaba.cloud.dubbo.annotation.DubboTransported;
import com.alibaba.cloud.dubbo.service.RestService;
import com.alibaba.cloud.dubbo.service.User;
import com.alibaba.cloud.dubbo.service.UserService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.beans.factory.annotation.Autowired;
@@ -48,9 +48,10 @@ import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.client.RestTemplate;
import static org.springframework.http.MediaType.APPLICATION_JSON_UTF8_VALUE;
import static org.springframework.http.MediaType.APPLICATION_JSON_VALUE;
/**
* Dubbo Spring Cloud Consumer Bootstrap
* Dubbo Spring Cloud Consumer Bootstrap.
*/
@EnableDiscoveryClient
@EnableAutoConfiguration
@@ -80,51 +81,6 @@ public class DubboSpringCloudConsumerBootstrap {
@LoadBalanced
private RestTemplate restTemplate;
@FeignClient("${provider.application.name}")
public interface FeignRestService {
@GetMapping(value = "/param")
String param(@RequestParam("param") String param);
@PostMapping("/params")
public String params(@RequestParam("b") String b, @RequestParam("a") int a);
@PostMapping(value = "/request/body/map", produces = APPLICATION_JSON_UTF8_VALUE)
User requestBody(@RequestParam("param") String param,
@RequestBody Map<String, Object> data);
@GetMapping("/headers")
public String headers(@RequestHeader("h2") String header2,
@RequestHeader("h") String header, @RequestParam("v") Integer value);
@GetMapping("/path-variables/{p1}/{p2}")
public String pathVariables(@PathVariable("p2") String path2,
@PathVariable("p1") String path1, @RequestParam("v") String param);
}
@FeignClient("${provider.application.name}")
@DubboTransported(protocol = "dubbo")
public interface DubboFeignRestService {
@GetMapping(value = "/param")
String param(@RequestParam("param") String param);
@PostMapping("/params")
String params(@RequestParam("b") String paramB, @RequestParam("a") int paramA);
@PostMapping(value = "/request/body/map", produces = APPLICATION_JSON_UTF8_VALUE)
User requestBody(@RequestParam("param") String param,
@RequestBody Map<String, Object> data);
@GetMapping("/headers")
public String headers(@RequestHeader("h2") String header2,
@RequestParam("v") Integer value, @RequestHeader("h") String header);
@GetMapping("/path-variables/{p1}/{p2}")
public String pathVariables(@RequestParam("v") String param,
@PathVariable("p2") String path2, @PathVariable("p1") String path1);
}
@Bean
public ApplicationRunner userServiceRunner() {
return arguments -> {
@@ -255,4 +211,52 @@ public class DubboSpringCloudConsumerBootstrap {
new SpringApplicationBuilder(DubboSpringCloudConsumerBootstrap.class)
.properties("spring.profiles.active=nacos").run(args);
}
@FeignClient("${provider.application.name}")
public interface FeignRestService {
@GetMapping("/param")
String param(@RequestParam("param") String param);
@PostMapping("/params")
String params(@RequestParam("b") String b, @RequestParam("a") int a);
@PostMapping(value = "/request/body/map", produces = APPLICATION_JSON_VALUE)
User requestBody(@RequestParam("param") String param,
@RequestBody Map<String, Object> data);
@GetMapping("/headers")
String headers(@RequestHeader("h2") String header2,
@RequestHeader("h") String header, @RequestParam("v") Integer value);
@GetMapping("/path-variables/{p1}/{p2}")
String pathVariables(@PathVariable("p2") String path2,
@PathVariable("p1") String path1, @RequestParam("v") String param);
}
@FeignClient("${provider.application.name}")
@DubboTransported(protocol = "dubbo")
public interface DubboFeignRestService {
@GetMapping("/param")
String param(@RequestParam("param") String param);
@PostMapping("/params")
String params(@RequestParam("b") String paramB, @RequestParam("a") int paramA);
@PostMapping(value = "/request/body/map", produces = APPLICATION_JSON_UTF8_VALUE)
User requestBody(@RequestParam("param") String param,
@RequestBody Map<String, Object> data);
@GetMapping("/headers")
String headers(@RequestHeader("h2") String header2,
@RequestParam("v") Integer value, @RequestHeader("h") String header);
@GetMapping("/path-variables/{p1}/{p2}")
String pathVariables(@RequestParam("v") String param,
@PathVariable("p2") String path2, @PathVariable("p1") String path1);
}
}

3
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-consumer-sample/src/main/resources/application.yaml
View File

@@ -10,6 +10,9 @@ dubbo:
# The subscribed services in consumer side
subscribed-services: ${provider.application.name}
consumer:
check: false
server:
port: 0

58
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-sample/pom.xml
View File

@@ -99,35 +99,35 @@
<artifactId>netty-all</artifactId>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxrs</artifactId>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-client</artifactId>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-netty4</artifactId>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
</dependency>
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jackson-provider</artifactId>
</dependency>
<!-- <dependency>-->
<!-- <groupId>org.jboss.resteasy</groupId>-->
<!-- <artifactId>resteasy-jaxrs</artifactId>-->
<!-- </dependency>-->
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-jaxb-provider</artifactId>
</dependency>
<!-- <dependency>-->
<!-- <groupId>org.jboss.resteasy</groupId>-->
<!-- <artifactId>resteasy-client</artifactId>-->
<!-- </dependency>-->
<!-- <dependency>-->
<!-- <groupId>org.jboss.resteasy</groupId>-->
<!-- <artifactId>resteasy-netty4</artifactId>-->
<!-- </dependency>-->
<!-- <dependency>-->
<!-- <groupId>org.jboss.resteasy</groupId>-->
<!-- <artifactId>resteasy-jackson-provider</artifactId>-->
<!-- </dependency>-->
<!-- <dependency>-->
<!-- <groupId>org.jboss.resteasy</groupId>-->
<!-- <artifactId>resteasy-jaxb-provider</artifactId>-->
<!-- </dependency>-->
<dependency>
<groupId>org.hibernate.validator</groupId>
@@ -136,18 +136,6 @@
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-bom</artifactId>
<version>${dubbo.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-sample/src/main/java/com/alibaba/cloud/dubbo/bootstrap/DubboSpringCloudProviderBootstrap.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.bootstrap;
import org.springframework.boot.WebApplicationType;
@@ -21,7 +22,7 @@ import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* Dubbo Spring Cloud Provider Bootstrap
* Dubbo Spring Cloud Provider Bootstrap.
*/
@EnableDiscoveryClient
@EnableAutoConfiguration
@@ -32,4 +33,5 @@ public class DubboSpringCloudProviderBootstrap {
.properties("spring.profiles.active=nacos").web(WebApplicationType.NONE)
.run(args);
}
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-sample/src/main/java/com/alibaba/cloud/dubbo/service/InMemoryUserService.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.util.Collection;
@@ -22,7 +23,7 @@ import java.util.Map;
import org.apache.dubbo.config.annotation.Service;
/**
* In-Memory {@link UserService} implementation
* In-Memory {@link UserService} implementation.
*/
@Service(protocol = "dubbo")
public class InMemoryUserService implements UserService {
@@ -43,4 +44,5 @@ public class InMemoryUserService implements UserService {
public Collection<User> findAll() {
return usersRepository.values();
}
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-sample/src/main/java/com/alibaba/cloud/dubbo/service/StandardRestService.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.util.HashMap;
@@ -37,7 +38,7 @@ import static com.alibaba.cloud.dubbo.util.LoggerUtils.log;
import static org.springframework.util.MimeTypeUtils.APPLICATION_JSON_VALUE;
/**
* Default {@link RestService}
* Default {@link RestService}.
*
* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
*/
@@ -118,4 +119,5 @@ public class StandardRestService implements RestService {
map.put("age", user.getAge());
return map;
}
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-web-sample/src/main/java/com/alibaba/cloud/dubbo/bootstrap/DubboSpringCloudWebProviderBootstrap.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.bootstrap;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
@@ -20,7 +21,7 @@ import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* Dubbo Spring Cloud Provider Bootstrap
* Dubbo Spring Cloud Provider Bootstrap.
*/
@EnableDiscoveryClient
@EnableAutoConfiguration
@@ -30,4 +31,5 @@ public class DubboSpringCloudWebProviderBootstrap {
new SpringApplicationBuilder(DubboSpringCloudWebProviderBootstrap.class)
.properties("spring.profiles.active=nacos").run(args);
}
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-web-sample/src/main/java/com/alibaba/cloud/dubbo/service/InMemoryUserService.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.util.Collection;
@@ -22,7 +23,7 @@ import java.util.Map;
import org.apache.dubbo.config.annotation.Service;
/**
* In-Memory {@link UserService} implementation
* In-Memory {@link UserService} implementation.
*/
@Service(protocol = "dubbo")
public class InMemoryUserService implements UserService {
@@ -43,4 +44,5 @@ public class InMemoryUserService implements UserService {
public Collection<User> findAll() {
return usersRepository.values();
}
}

13
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-web-sample/src/main/java/com/alibaba/cloud/dubbo/service/SpringRestService.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.util.HashMap;
@@ -34,7 +35,7 @@ import org.springframework.web.bind.annotation.RestController;
import static com.alibaba.cloud.dubbo.util.LoggerUtils.log;
/**
* Spring MVC {@link RestService}
* Spring MVC {@link RestService}.
*
* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
*/
@@ -45,7 +46,7 @@ public class SpringRestService implements RestService {
private Logger logger = LoggerFactory.getLogger(getClass());
@Override
@GetMapping(value = "/param")
@GetMapping("/param")
public String param(@RequestParam String param) {
log("/param", param);
return param;
@@ -83,7 +84,8 @@ public class SpringRestService implements RestService {
}
@Override
@PostMapping(value = "/request/body/map", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
@PostMapping(value = "/request/body/map",
produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public User requestBodyMap(@RequestBody Map<String, Object> data,
@RequestParam("param") String param) {
User user = new User();
@@ -94,7 +96,8 @@ public class SpringRestService implements RestService {
return user;
}
@PostMapping(value = "/request/body/user", consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
@PostMapping(value = "/request/body/user",
consumes = MediaType.APPLICATION_JSON_UTF8_VALUE)
@Override
public Map<String, Object> requestBodyUser(@RequestBody User user) {
Map<String, Object> map = new HashMap<>();

11
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-provider-web-sample/src/main/resources/application.yaml
View File

@@ -5,18 +5,21 @@ dubbo:
dubbo:
name: dubbo
port: -1
registry:
registries:
new:
address: spring-cloud://localhost
# registry:
# The Spring Cloud Dubbo's registry extension
address: spring-cloud://localhost
# address: spring-cloud://localhost
# The traditional Dubbo's registry
# address: zookeeper://127.0.0.1:2181
# address: nacos://127.0.0.1:8848
feign:
hystrix:
enabled: true
server:
port: 8888
port: 8080
management:
endpoints:

26
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-sample-api/src/main/java/com/alibaba/cloud/dubbo/service/EchoService.java Normal file
View File

@@ -0,0 +1,26 @@
/*
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
/**
* Echo Service.
*/
public interface EchoService {
String echo(String message);
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-sample-api/src/main/java/com/alibaba/cloud/dubbo/service/RestService.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,12 +13,13 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.util.Map;
/**
* Rest Service
* Rest Service.
*
* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
*/
@@ -37,4 +38,5 @@ public interface RestService {
User requestBodyMap(Map<String, Object> data, String param);
Map<String, Object> requestBodyUser(User user);
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-sample-api/src/main/java/com/alibaba/cloud/dubbo/service/User.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,12 +13,13 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.io.Serializable;
/**
* User Entity
* User Entity.
*
* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
*/
@@ -58,4 +59,5 @@ public class User implements Serializable {
public String toString() {
return "User{" + "id=" + id + ", name='" + name + '\'' + ", age=" + age + '}';
}
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-sample-api/src/main/java/com/alibaba/cloud/dubbo/service/UserService.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,12 +13,13 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.service;
import java.util.Collection;
/**
* {@link User} Service
* {@link User} Service.
*
* @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
*/
@@ -29,4 +30,5 @@ public interface UserService {
boolean remove(Long userId);
Collection<User> findAll();
}

6
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-sample-api/src/main/java/com/alibaba/cloud/dubbo/util/LoggerUtils.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C) 2018 the original author or authors.
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -13,6 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.util;
import org.apache.dubbo.rpc.RpcContext;
@@ -20,7 +21,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Logger Utilities
* Logger Utilities.
*/
public abstract class LoggerUtils {
@@ -37,4 +38,5 @@ public abstract class LoggerUtils {
logger.info(message);
}
}
}

55
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-server-sample/pom.xml Normal file
View File

@@ -0,0 +1,55 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dubbo-examples</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-dubbo-server-sample</artifactId>
<name>Spring Cloud Dubbo Server Sample</name>
<version>2.0.1.RELEASE</version>
<dependencies>
<!-- Sample API -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-dubbo-sample-api</artifactId>
<version>${project.version}</version>
</dependency>
<!-- Spring Boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-actuator</artifactId>
</dependency>
<!-- Dubbo Spring Cloud Starter -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
</dependency>
<!-- Spring Cloud Nacos Service Discovery -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

47
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-server-sample/src/main/java/com/alibaba/cloud/dubbo/bootstrap/DubboSpringCloudServerBootstrap.java Normal file
View File

@@ -0,0 +1,47 @@
/*
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.bootstrap;
import com.alibaba.cloud.dubbo.service.EchoService;
import org.apache.dubbo.config.annotation.Service;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* Dubbo Spring Cloud Server Bootstrap.
*/
@EnableDiscoveryClient
@EnableAutoConfiguration
public class DubboSpringCloudServerBootstrap {
public static void main(String[] args) {
SpringApplication.run(DubboSpringCloudServerBootstrap.class);
}
}
@Service
class EchoServiceImpl implements EchoService {
@Override
public String echo(String message) {
return "[echo] Hello, " + message;
}
}

18
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-server-sample/src/main/resources/bootstrap.yaml Normal file
View File

@@ -0,0 +1,18 @@
dubbo:
scan:
base-packages: com.alibaba.cloud.dubbo.bootstrap
protocol:
name: dubbo
port: -1
registry:
address: spring-cloud://localhost
spring:
application:
name: spring-cloud-alibaba-dubbo-server
main:
allow-bean-definition-overriding: true
cloud:
nacos:
discovery:
server-addr: 127.0.0.1:8848

63
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-servlet-gateway-sample/pom.xml Normal file
View File

@@ -0,0 +1,63 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dubbo-examples</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>spring-cloud-dubbo-servlet-gateway-sample</artifactId>
<name>Spring Cloud Dubbo Servlet Gateway Sample</name>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!-- Sample API -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-dubbo-sample-api</artifactId>
<version>${project.version}</version>
</dependency>
<!-- Dubbo Spring Cloud Starter -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
</dependency>
<!-- Spring Cloud Nacos Service Discovery -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

39
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-servlet-gateway-sample/src/main/java/com/alibaba/cloud/dubbo/bootstrap/DubboSpringCloudServletGatewayBootstrap.java Normal file
View File

@@ -0,0 +1,39 @@
/*
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.bootstrap;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
/**
* Dubbo Spring Cloud Servlet Gateway Bootstrap.
*/
@EnableDiscoveryClient
@EnableAutoConfiguration
@EnableFeignClients
@ServletComponentScan(basePackages = "com.alibaba.cloud.dubbo.gateway")
public class DubboSpringCloudServletGatewayBootstrap {
public static void main(String[] args) {
new SpringApplicationBuilder(DubboSpringCloudServletGatewayBootstrap.class)
.properties("spring.profiles.active=nacos").run(args);
}
}

212
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-servlet-gateway-sample/src/main/java/com/alibaba/cloud/dubbo/gateway/DubboGatewayServlet.java Normal file
View File

@@ -0,0 +1,212 @@
/*
* Copyright 2013-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cloud.dubbo.gateway;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.alibaba.cloud.dubbo.http.MutableHttpServerRequest;
import com.alibaba.cloud.dubbo.metadata.DubboRestServiceMetadata;
import com.alibaba.cloud.dubbo.metadata.RequestMetadata;
import com.alibaba.cloud.dubbo.metadata.RestMethodMetadata;
import com.alibaba.cloud.dubbo.metadata.repository.DubboServiceMetadataRepository;
import com.alibaba.cloud.dubbo.service.DubboGenericServiceExecutionContext;
import com.alibaba.cloud.dubbo.service.DubboGenericServiceExecutionContextFactory;
import com.alibaba.cloud.dubbo.service.DubboGenericServiceFactory;
import org.apache.dubbo.rpc.service.GenericException;
import org.apache.dubbo.rpc.service.GenericService;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpRequest;
import org.springframework.util.AntPathMatcher;
import org.springframework.util.PathMatcher;
import org.springframework.util.StreamUtils;
import org.springframework.web.servlet.HttpServletBean;
import org.springframework.web.util.UriComponents;
import static org.apache.commons.lang3.StringUtils.substringAfter;
import static org.apache.commons.lang3.StringUtils.substringBetween;
import static org.springframework.web.util.UriComponentsBuilder.fromUriString;
@WebServlet(urlPatterns = "/dsc/*")
public class DubboGatewayServlet extends HttpServletBean {
private final DubboServiceMetadataRepository repository;
private final DubboGenericServiceFactory serviceFactory;
private final DubboGenericServiceExecutionContextFactory contextFactory;
private final PathMatcher pathMatcher = new AntPathMatcher();
private final Map<String, Object> dubboTranslatedAttributes = new HashMap<>();
public DubboGatewayServlet(DubboServiceMetadataRepository repository,
DubboGenericServiceFactory serviceFactory,
DubboGenericServiceExecutionContextFactory contextFactory) {
this.repository = repository;
this.serviceFactory = serviceFactory;
this.contextFactory = contextFactory;
dubboTranslatedAttributes.put("protocol", "dubbo");
dubboTranslatedAttributes.put("cluster", "failover");
}
private String resolveServiceName(HttpServletRequest request) {
// /g/{app-name}/{rest-path}
String requestURI = request.getRequestURI();
// /g/
String servletPath = request.getServletPath();
String part = substringAfter(requestURI, servletPath);
String serviceName = substringBetween(part, "/", "/");
return serviceName;
}
@Override
public void service(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
String serviceName = resolveServiceName(request);
String restPath = substringAfter(request.getRequestURI(), serviceName);
// 初始化 serviceName 的 REST 请求元数据
repository.initializeMetadata(serviceName);
// 将 HttpServletRequest 转化为 RequestMetadata
RequestMetadata clientMetadata = buildRequestMetadata(request, restPath);
DubboRestServiceMetadata dubboRestServiceMetadata = repository.get(serviceName,
clientMetadata);
if (dubboRestServiceMetadata == null) {
// if DubboServiceMetadata is not found, executes next
throw new ServletException("DubboServiceMetadata can't be found!");
}
RestMethodMetadata dubboRestMethodMetadata = dubboRestServiceMetadata
.getRestMethodMetadata();
GenericService genericService = serviceFactory.create(dubboRestServiceMetadata,
dubboTranslatedAttributes);
// TODO: Get the Request Body from HttpServletRequest
byte[] body = getRequestBody(request);
MutableHttpServerRequest httpServerRequest = new MutableHttpServerRequest(
new HttpRequestAdapter(request), body);
DubboGenericServiceExecutionContext context = contextFactory
.create(dubboRestMethodMetadata, httpServerRequest);
Object result = null;
GenericException exception = null;
try {
result = genericService.$invoke(context.getMethodName(),
context.getParameterTypes(), context.getParameters());
}
catch (GenericException e) {
exception = e;
}
response.getWriter().println(result);
}
private byte[] getRequestBody(HttpServletRequest request) throws IOException {
ServletInputStream inputStream = request.getInputStream();
return StreamUtils.copyToByteArray(inputStream);
}
private RequestMetadata buildRequestMetadata(HttpServletRequest request,
String restPath) {
UriComponents uriComponents = fromUriString(request.getRequestURI()).build(true);
RequestMetadata requestMetadata = new RequestMetadata();
requestMetadata.setPath(restPath);
requestMetadata.setMethod(request.getMethod());
requestMetadata.setParams(getParams(request));
requestMetadata.setHeaders(getHeaders(request));
return requestMetadata;
}
private Map<String, List<String>> getHeaders(HttpServletRequest request) {
Map<String, List<String>> map = new LinkedHashMap<>();
Enumeration<String> headerNames = request.getHeaderNames();
while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
Enumeration<String> headerValues = request.getHeaders(headerName);
map.put(headerName, Collections.list(headerValues));
}
return map;
}
private Map<String, List<String>> getParams(HttpServletRequest request) {
Map<String, List<String>> map = new LinkedHashMap<>();
for (Map.Entry<String, String[]> entry : request.getParameterMap().entrySet()) {
map.put(entry.getKey(), Arrays.asList(entry.getValue()));
}
return map;
}
private final static class HttpRequestAdapter implements HttpRequest {
private final HttpServletRequest request;
private HttpRequestAdapter(HttpServletRequest request) {
this.request = request;
}
@Override
public String getMethodValue() {
return request.getMethod();
}
@Override
public URI getURI() {
try {
return new URI(request.getRequestURL().toString() + "?"
+ request.getQueryString());
}
catch (URISyntaxException e) {
e.printStackTrace();
}
throw new RuntimeException();
}
@Override
public HttpHeaders getHeaders() {
return new HttpHeaders();
}
}
}

12
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-servlet-gateway-sample/src/main/resources/application.yaml Normal file
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@@ -0,0 +1,12 @@
dubbo:
registry:
# The Spring Cloud Dubbo's registry extension
address: spring-cloud://localhost
# The traditional Dubbo's registry
# address: zookeeper://127.0.0.1:2181
server:
port: 0
provider:
application:
name: spring-cloud-alibaba-dubbo-web-provider

70
spring-cloud-alibaba-examples/spring-cloud-alibaba-dubbo-examples/spring-cloud-dubbo-servlet-gateway-sample/src/main/resources/bootstrap.yaml Normal file
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@@ -0,0 +1,70 @@
spring:
application:
name: spring-cloud-alibaba-dubbo-servlet-gateway
main:
allow-bean-definition-overriding: true
# default disable all
cloud:
nacos:
discovery:
enabled: false
register-enabled: false
zookeeper:
enabled: false
consul:
enabled: false
eureka:
client:
enabled: false
ribbon:
nacos:
enabled: false
---
spring:
profiles: nacos
cloud:
nacos:
discovery:
enabled: true
register-enabled: true
server-addr: 127.0.0.1:8848
ribbon:
nacos:
enabled: true
---
spring:
profiles: eureka
eureka:
client:
enabled: true
service-url:
defaultZone: http://127.0.0.1:8761/eureka/
---
spring:
profiles: zookeeper
cloud:
zookeeper:
enabled: true
connect-string: 127.0.0.1:2181
---
spring:
profiles: consul
cloud:
consul:
enabled: true
host: 127.0.0.1
port: 8500