Spring Cloud练习1

pom.xml

 <?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">
     <modelVersion>4.0.0</modelVersion>

     <groupId>org.jimmy</groupId>
     <artifactId>springclouddemo</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>

     <name>SpringCloudDemo20180502</name>
     <description>Demo project for Spring Boot</description>

     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>2.0.1.RELEASE</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>

     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
         <spring-cloud.version>Finchley.RC1</spring-cloud.version>
     </properties>

     <dependencies>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
         </dependency>

         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>

         <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-eureka-server</artifactId>
         </dependency>
     </dependencies>

     <dependencyManagement>
         <dependencies>
             <dependency>
                 <groupId>org.springframework.cloud</groupId>
                 <artifactId>spring-cloud-dependencies</artifactId>
                 <version>${spring-cloud.version}</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
         </dependencies>
     </dependencyManagement>

     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
         </plugins>
     </build>

     <repositories>
         <repository>
             <id>spring-milestones</id>
             <name>Spring Milestones</name>
             <url>https://repo.spring.io/milestone</url>
             <snapshots>
                 <enabled>false</enabled>
             </snapshots>
         </repository>
     </repositories>

 </project>

application-server.yml
代码如下:
eureka:

  client:
    register-with-eureka: false
    fetch-registry: false
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
server:
  port: 8761
spring:
  application:
    name: service-hi

application.yml

代码如下:

spring:
  profiles:
    active: server

application-client.yml
代码如下:

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
server:
  port: 8762
spring:
  application:
    name: service-hi

Config.java

 package org.jimmy;

 import org.springframework.cloud.client.loadbalancer.LoadBalanced;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.client.RestTemplate;

 /**
  * Created by Administrator on 2018/5/2 0002.
  */
 @Configuration
 public class Config {
     @LoadBalanced
     @Bean
     public RestTemplate restTemplate() {
         return new RestTemplate();
     }
 }

ServiceHiApplication.java

 package org.jimmy;

 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
 import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;

 @SpringBootApplication
 @EnableEurekaServer
 public class ServiceHiApplication  {
     public static void main(String[] args) throws Exception {
         SpringApplication.run(ServiceHiApplication.class, args);
     }

 }

ClientHiApplication.java

 package org.jimmy;

 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;

 /**
  * Created by Administrator on 2018/5/3 0003.
  */
 @SpringBootApplication
 @EnableDiscoveryClient
 @RestController
 public class ClientHiApplication {

     public static void main(String[] args) {
         SpringApplication.run(ClientHiApplication.class, args);
     }

     @Value("${server.port}")
     String port;
     @RequestMapping("/hi")
     public String home(@RequestParam String name) {
         System.out.println("name:" + name + ",port:" + port);
         return "hi "+name+",i am from port:" +port;
     }
 }

第一步,运行ServiceHiApplication.java.服务可以启动了.

第二步,将

application.yml

改为如下:

spring:
  profiles:
    active: client
之前的Server是服务端,此时再启动一个客户端.(server对应application-server.yml,client对应application-client.yml)
运行ClientHiApplication.java.客户端可以启动了.
在Web浏览器(Chrome,FireFox等)中访问url:

http://localhost:8762/hi?name=Dawn

如果页面显示:hi Dawn,i am from port:8762
说明代码没有问题,可以成功访问了.