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10
spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md
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@@ -15,7 +15,7 @@
1. 首先，修改 pom.xml 文件，引入 Nacos Config Starter。
<dependency>
<groupId>org.springframework.cloud</groupId>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
@@ -43,12 +43,10 @@
1. 直接下载：[Nacos Server 下载页](https://github.com/alibaba/nacos/releases)
2. 源码构建：进入 Nacos [Github 项目页面](https://github.com/alibaba/nacos)，将代码 git clone 到本地自行编译打包，[参考此文档](https://nacos.io/zh-cn/docs/quick-start.html)。
2. 启动 Server，进入下载到本地并解压完成后的文件夹(使用源码构建的方式则进入编译打包好的文件夹)，再进去其相对文件夹 nacos/bin，并对照操作系统实际情况执行如下命令。[详情参考此文档](https://nacos.io/zh-cn/docs/quick-start.html)。
1. Linux/Unix/Mac 操作系统，执行命令 `sh startup.sh -m standalone`
1. Windows 操作系统，执行命令 `cmd startup.cmd`
2. Windows 操作系统，执行命令 `cmd startup.cmd`
3. 在命令行执行如下命令，向 Nacos Server 中添加一条配置。
@@ -113,11 +111,11 @@ Nacos Client 从 Nacos Server 端获取数据时，调用的是此接口 `Config
在 Nacos Config Starter 中，dataId 的拼接格式如下
${prefix} - ${spring.active.profile} . ${file-extension}
${prefix} - ${spring.profiles.active} . ${file-extension}
* `prefix` 默认为 `spring.application.name` 的值，也可以通过配置项 `spring.cloud.nacos.config.prefix`来配置。
* `spring.active.profile` 即为当前环境对应的 profile，详情可以参考 [Spring Boot文档](https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-profiles.html#boot-features-profiles)
* `spring.profiles.active` 即为当前环境对应的 profile，详情可以参考 [Spring Boot文档](https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-profiles.html#boot-features-profiles)
**注意，当 activeprofile 为空时，对应的连接符 `-` 也将不存在，dataId 的拼接格式变成 `${prefix}`.`${file-extension}`**

10
spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme.md
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@@ -15,7 +15,7 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
1. Add dependency spring-cloud-starter-alibaba-nacos-config in the pom.xml file in your Spring Cloud project.
<dependency>
<groupId>org.springframework.cloud</groupId>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
@@ -42,12 +42,10 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
1. Download: Download Nacos Server [download page](https://github.com/alibaba/nacos/releases)
2. Build from source code: Get source code by git clone git@github.com:alibaba/Nacos.git from Github Nacos and build your code. See [build reference](https://nacos.io/en-us/docs/quick-start.html) for details.
2. Unzip the downloaded file and go to the nacos/bin folder(), And according to the actual situation of the operating system, execute the following command。[see reference for more detail](https://nacos.io/en-us/docs/quick-start.html)。
1. Linux/Unix/Mac , execute `sh startup.sh -m standalone`
1. Windows , execute `cmd startup.cmd`
2. Windows , execute `cmd startup.cmd`
3. Execute the following command to add a configuration to Nacos Server.
@@ -114,11 +112,11 @@ Nacos Client gets data from Nacos Server through this method. `ConfigService.get
In Nacos Config Starter, the splicing format of dataId is as follows
${prefix} - ${spring.active.profile} . ${file-extension}
${prefix} - ${spring.profiles.active} . ${file-extension}
* `prefix` default value is `spring.application.name` value, which can also be configured via the configuration item `spring.cloud.nacos.config.prefix`.
* `spring.active.profile` is the profile corresponding to the current environment. For details, please refer to [Spring Boot Doc](https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-profiles.html#boot-features-profiles)
* `spring.profiles.active` is the profile corresponding to the current environment. For details, please refer to [Spring Boot Doc](https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-profiles.html#boot-features-profiles)
**Note: when the activeprofile is empty, the corresponding connector `-` will also not exist, and the splicing format of the dataId becomes `${prefix}`.`${file-extension}`**

54
spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/com/alibaba/cloud/examples/Application.java
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@@ -1,5 +1,14 @@
package com.alibaba.cloud.examples;
import java.io.IOException;
import java.io.StringReader;
import java.util.Properties;
import java.util.concurrent.Executor;
import com.alibaba.cloud.nacos.NacosConfigManager;
import com.alibaba.nacos.api.config.listener.Listener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
@@ -11,11 +20,10 @@ import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author xiaojing
* @author xiaojing, Jianwei Mao
*/
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@@ -27,13 +35,47 @@ class SampleRunner implements ApplicationRunner {
@Value("${user.name}")
String userName;
@Value("${user.age}")
@Value("${user.age:25}")
int userAge;
@Autowired
private NacosConfigManager nacosConfigManager;
@Override
public void run(ApplicationArguments args) throws Exception {
System.out.println(userName);
System.out.println(userAge);
System.out.println(
String.format("Initial username=%s, userAge=%d", userName, userAge));
nacosConfigManager.getConfigService().addListener(
"nacos-config-example.properties", "DEFAULT_GROUP", new Listener() {
/**
* Callback with latest config data.
*
* For example, config data in Nacos is:
*
* user.name=Nacos user.age=25
*
* @param configInfo latest config data for specific dataId in Nacos
* server
*/
@Override
public void receiveConfigInfo(String configInfo) {
Properties properties = new Properties();
try {
properties.load(new StringReader(configInfo));
}
catch (IOException e) {
e.printStackTrace();
}
System.out.println("config changed: " + properties);
}
@Override
public Executor getExecutor() {
return null;
}
});
}
}
@@ -44,7 +86,7 @@ class SampleController {
@Value("${user.name}")
String userName;
@Value("${user.age}")
@Value("${user.age:25}")
int age;
@RequestMapping("/user")

6
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/src/main/java/com/alibaba/cloud/examples/ConsumerApplication.java
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@@ -1,5 +1,8 @@
package com.alibaba.cloud.examples;
import com.alibaba.cloud.examples.ConsumerApplication.EchoService;
import com.alibaba.cloud.sentinel.annotation.SentinelRestTemplate;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@@ -13,9 +16,6 @@ import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.client.RestTemplate;
import com.alibaba.cloud.examples.ConsumerApplication.EchoService;
import com.alibaba.cloud.sentinel.annotation.SentinelRestTemplate;
/**
* @author xiaojing
*/

4
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-consumer-example/src/main/java/com/alibaba/cloud/examples/TestController.java
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@@ -1,5 +1,7 @@
package com.alibaba.cloud.examples;
import com.alibaba.cloud.examples.ConsumerApplication.EchoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.PathVariable;
@@ -9,8 +11,6 @@ import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import com.alibaba.cloud.examples.ConsumerApplication.EchoService;
/**
* @author xiaojing
*/

3
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-provider-example/src/main/java/com/alibaba/cloud/examples/ProviderApplication.java
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@@ -14,8 +14,8 @@ import org.springframework.web.bind.annotation.RestController;
/**
* @author xiaojing
*/
@SpringBootApplication
@EnableDiscoveryClient
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) {
@@ -24,6 +24,7 @@ public class ProviderApplication {
@RestController
class EchoController {
@RequestMapping(value = "/", method = RequestMethod.GET)
public ResponseEntity index() {
return new ResponseEntity("index error", HttpStatus.INTERNAL_SERVER_ERROR);

6
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-spring-cloud-config-client/src/main/java/com/alibaba/cloud/examples/SpringCloudConfigClientApplication.java
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@@ -27,8 +27,8 @@ import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@EnableDiscoveryClient
public class SpringCloudConfigClientApplication {
public static void main(String[] args) {
SpringApplication.run(SpringCloudConfigClientApplication.class, args);
}
public static void main(String[] args) {
SpringApplication.run(SpringCloudConfigClientApplication.class, args);
}
}

2
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/nacos-discovery-spring-cloud-config-client/src/main/resources/application.yml
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@@ -1 +1 @@
config: config-from-yml
config: config-from-yml

16
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme-zh.md
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@@ -15,7 +15,7 @@
1. 首先，修改 pom.xml 文件，引入 Nacos Discovery Starter。
<dependency>
<groupId>org.springframework.cloud</groupId>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
@@ -35,7 +35,7 @@
@RestController
class EchoController {
@RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
@GetMapping(value = "/echo/{string}")
public String echo(@PathVariable String string) {
return string;
}
@@ -70,7 +70,7 @@
### 验证
#### 查询服务
在浏览器输入此地址 `http://127.0.0.1:8848/nacos/v1/ns/instances?serviceName=service-provider`，并点击跳转，可以看到服务节点已经成功注册到 Nacos Server。
在浏览器输入此地址 `http://127.0.0.1:8848/nacos/v1/ns/catalog/instances?serviceName=service-provider&clusterName=DEFAULT&pageSize=10&pageNo=1&namespaceId=`，并点击跳转，可以看到服务节点已经成功注册到 Nacos Server。
![查询服务](https://cdn.nlark.com/lark/0/2018/png/54319/1536986288092-5cf96af9-9a26-466b-85f6-39ad1d92dfdc.png)
@@ -102,7 +102,7 @@ Nacos Discovery Starter 默认集成了 Ribbon ，所以对于使用了 Ribbon
@FeignClient(name = "service-provider")
public interface EchoService {
@RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
@GetMapping(value = "/echo/{str}")
String echo(@PathVariable("str") String str);
}
@@ -120,11 +120,11 @@ Nacos Discovery Starter 默认集成了 Ribbon ，所以对于使用了 Ribbon
@Autowired
private EchoService echoService;
@RequestMapping(value = "/echo-rest/{str}", method = RequestMethod.GET)
@GetMapping(value = "/echo-rest/{str}")
public String rest(@PathVariable String str) {
return restTemplate.getForObject("http://service-provider/echo/" + str, String.class);
}
@RequestMapping(value = "/echo-feign/{str}", method = RequestMethod.GET)
@GetMapping(value = "/echo-feign/{str}")
public String feign(@PathVariable String str) {
return echoService.echo(str);
}
@@ -141,11 +141,11 @@ Nacos Discovery Starter 默认集成了 Ribbon ，所以对于使用了 Ribbon
2. 打包编译后启动：在 nacos-discovery-consumer-example 项目中执行 `mvn clean package` 将工程编译打包，然后执行 `java -jar nacos-discovery-consumer-example.jar`启动应用。
#### 验证
1. 在流量器地址栏中输入 http://127.0.0.1:18083/echo-rest/1234，点击跳转，可以看到浏览器显示了 nacos-discovery-provider-example 返回的消息 "hello Nacos Discovery 1234"，证明服务发现生效。
1. 在浏览器地址栏中输入 http://127.0.0.1:18083/echo-rest/1234，点击跳转，可以看到浏览器显示了 nacos-discovery-provider-example 返回的消息 "hello Nacos Discovery 1234"，证明服务发现生效。
![rest](https://cdn.nlark.com/lark/0/2018/png/54319/1536986302124-ee27670d-bdcc-4210-9f5d-875acec6d3ea.png)
1. 在流量器地址栏中输入 http://127.0.0.1:18083/echo-feign/12345，点击跳转，可以看到浏览器显示 nacos-discovery-provider-example 返回的消息 "hello Nacos Discovery 12345"，证明服务发现生效。
1. 在浏览器地址栏中输入 http://127.0.0.1:18083/echo-feign/12345，点击跳转，可以看到浏览器显示 nacos-discovery-provider-example 返回的消息 "hello Nacos Discovery 12345"，证明服务发现生效。
![feign](https://cdn.nlark.com/lark/0/2018/png/54319/1536986311685-6d0c1f9b-a453-4ec3-88ab-f7922d210f65.png)
## 原理

4
spring-cloud-alibaba-examples/nacos-example/nacos-discovery-example/readme.md
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@@ -14,7 +14,7 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
1. Add dependency spring-cloud-starter-alibaba-nacos-discovery in the pom.xml file in your Spring Cloud project.
<dependency>
<groupId>org.springframework.cloud</groupId>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
@@ -34,7 +34,7 @@ Before we start the demo, let's learn how to connect Nacos Config to a Spring Cl
@RestController
class EchoController {
@RequestMapping(value = "/echo/{string}", method = RequestMethod.GET)
@GetMapping(value = "/echo/{string}")
public String echo(@PathVariable String string) {
return string;
}