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update nacos config examples

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This commit is contained in:
fangjian0423 2019-04-11 10:39:28 +08:00
parent 091b043cc8
commit ebaf38fda7
1 changed files with 39 additions and 37 deletions
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40
spring-cloud-alibaba-examples/nacos-example/nacos-config-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/Application.java
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@ -1,6 +1,10 @@
package org.springframework.cloud.alibaba.cloud.examples; package org.springframework.cloud.alibaba.cloud.examples;
import com.alibaba.nacos.api.config.listener.Listener; import java.io.IOException;
import java.io.StringReader;
import java.util.Properties;
import java.util.concurrent.Executor;
import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value; import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.ApplicationArguments; import org.springframework.boot.ApplicationArguments;
@ -13,9 +17,7 @@ import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap; import com.alibaba.nacos.api.config.listener.Listener;
import java.util.Map;
import java.util.concurrent.Executor;
/** /**
* @author xiaojing, Jianwei Mao * @author xiaojing, Jianwei Mao
@ -37,38 +39,37 @@ class SampleRunner implements ApplicationRunner {
@Value("${user.age:25}") @Value("${user.age:25}")
int userAge; int userAge;
@Autowired @Autowired
private NacosConfigProperties nacosConfigProperties; private NacosConfigProperties nacosConfigProperties;
@Override @Override
public void run(ApplicationArguments args) throws Exception { public void run(ApplicationArguments args) throws Exception {
System.out.println(String.format("Initial username=%s, userAge=%d", userName, userAge)); System.out.println(
String.format("Initial username=%s, userAge=%d", userName, userAge));
nacosConfigProperties.configServiceInstance() nacosConfigProperties.configServiceInstance().addListener(
.addListener("nacos-config-example.properties", "DEFAULT_GROUP", new Listener() { "nacos-config-example.properties", "DEFAULT_GROUP", new Listener() {
/** /**
* Callback with latest config data. * Callback with latest config data.
* *
* For example, config data in Nacos is: * For example, config data in Nacos is:
* *
* user.name=Nacos * user.name=Nacos user.age=25
* user.age=25
* *
* @param configInfo latest config data for specific dataId in Nacos server * @param configInfo latest config data for specific dataId in Nacos
* server
*/ */
@Override @Override
public void receiveConfigInfo(String configInfo) { public void receiveConfigInfo(String configInfo) {
String [] configLines = configInfo.split("\r\n"); Properties properties = new Properties();
Map<String, String> configs = new HashMap<>(); try {
for (String c : configLines) { properties.load(new StringReader(configInfo));
String [] configPair = c.split("=");
configs.put(configPair[0], configPair[1]);
} }
catch (IOException e) {
System.out.println(String.format("Latest username=%s, userAge=%s", e.printStackTrace();
configs.get("user.name"), configs.get("user.age"))); }
System.out.println("config changed: " + properties);
} }
@Override @Override
@ -86,6 +87,7 @@ class SampleController {
@Value("${user.name}") @Value("${user.name}")
String userName; String userName;
@Value("${user.age:25}") @Value("${user.age:25}")
int age; int age;