一、前言
使用rpc远程调用技术(SpringCloud)搭建如下图,其中所用到的技术有maven、eureka、ribbon、SpringBoot等
二、准备环境
操作系统:win7
JDK:1.8
三、搭建SpringCloud注册中心(Eureka)之服务提供者
1) 在搭建Eureka(注册中心)基础下
2) 创建简单Maven项目
3) pom文件添加所需依赖
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.RC1</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>
<!-- 注意这里添加了远程库,其中maven仓库设置 settings.xml与pom.xml 优先级三者的级先是 pom.xml > /home_dir/.m2/settings.xml > /maven_dir/conf/settings.xml -->
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
4)在src/mainresources/下添加application.yml文件
注:这里http://localhost:9999/eureka/是注册中心地址
eureka:
client:
serviceUrl:
defaultZone: http://localhost:9999/eureka/
server:
port: 8762
spring:
application:
name: service-member
5)服务接口代码
@RestController
public class ServiceController {
@RequestMapping("/getUserList")
public List<String> getUserList() {
List<String> listUser = new ArrayList<String>();
listUser.add("zhangsan");
listUser.add("lisi");
return listUser;
}
}
6)发布服务代码,其中SpringBootApplication注解详解
@SpringBootApplication(scanBasePackages = "com.springCloud.controller")
@EnableEurekaClient
public class ServiceStartApp {
public static void main(String[] args) {
SpringApplication.run(ServiceStartApp.class, args);
}
}
其中我的目录结构如下
测试该服务结果如下
三、搭建SpringCloud注册中心(Eureka)之消费者
1) 创建简单Maven项目,注意要选择jar
2)pom文件添加所需依赖
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.RC1</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>
3)application.yml配置
eureka:
client:
serviceUrl:
defaultZone: http://localhost:9999/eureka/
server:
port: 8763
spring:
application:
name: service-order
4)service代码
@Service
public class CustomerService {
@Autowired
RestTemplate restTemplate;
public List<String> getOrderByUserList() {
return restTemplate.getForObject("http://service-member/getUserList", List.class);
}
}
5)Controller代码
@RestController
public class CustomerController {
@Autowired
CustomerService springCloudCustomer;
@RequestMapping("/getUserList")
public List<String> getUserList() {
return springCloudCustomer.getOrderByUserList();
}
}
6)启动代码
@EnableEurekaClient
@SpringBootApplication(scanBasePackages = { "com.springCloud.controller", "com.springCloud.service" })
public class CustomerStartApp {
public static void main(String[] args) {
SpringApplication.run(CustomerStartApp.class, args);
}
@Bean
@LoadBalanced //此注解是启动负载均衡
RestTemplate restTemplate() {
return new RestTemplate();
}
}
其中代码目录结构如下
7)测试结果
注意Eureka端口是9999,服务提供者是:8762,消费者是:8763