引言：先创建一个父工程spring-cloud-parent，包括四个个模块，一个提供者spring-cloud-provider，一个消费者spring-cloud-consumer，一个注册中心spring-cloud-eureka，一个存储公共资源的模块spring-cloud-common

1、父工程spring-cloud-parent加载的依赖

<dependencyManagement> <dependencies> <!-- 导入SpringCloud需要使用的依赖信息 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Greenwich.SR2</version> <type>pom</type> <!-- import依赖范围表示将spring-cloud-dependencies包中的依赖信息导入 --> <scope>import</scope> </dependency> <!-- 导入SpringBoot需要使用的依赖信息 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>2.1.6.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement>

2、spring-cloud-provider模块需要加载的资源

讯享网<parent> <artifactId>spring-cloud-study-parent</artifactId> <groupId>org.example</groupId> <version>1.0-SNAPSHOT</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.example</groupId> <artifactId>spring-cloud-common</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> </dependencies>

2.1、静态资源配置文件application.yml：

server: port: 1000 spring: application: name: atguigu-provider # 指定当前微服务名称，以便将来通过微服务名称调用当前微服务时能够找到 eureka: client: service-url: # 配置当前微服务作为Eureka客户端访问Eureka服务器端时使用的地址 defaultZone: http://localhost:5000/eureka

2.2、创建一个controller类，类名为EmployeeHandler，写一个测试方法：

讯享网@RequestMapping("/provider/get/employee/remote") public Employee getEmployeeRemote() { return new Employee(555, "tom555", 555.55); }

3、spring-cloud-consumer模块需要加载的资源

 <parent> <artifactId>spring-cloud-study-parent</artifactId> <groupId>org.example</groupId> <version>1.0-SNAPSHOT</version> </parent> <dependencys> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.example</groupId> <artifactId>spring-cloud-common</artifactId> <version>1.0-SNAPSHOT</version> </dependency> </dependencys>

3.1、静态资源配置文件application.yml：

讯享网server: port: 7000 spring: application: name: atguigu-consumer eureka: client: service-url: defaultZone: http://localhost:5000/eureka/

3.2、创建一个controller类，类名为HumanResourceHandler,写一个测试方法：

 @Autowired private RestTemplate restTemplate; @RequestMapping("/consumer/get/employee") public Employee getEmployeeRemote() { // 1.声明远程微服务的主机地址加端口号 //String host = "http://localhost:1000"; // 1.加入wureka后,使用微服务名称替代 IP 地址+端口号 String host = "http://atguigu-provider"; // 2.声明具体要调用的功能的URL地址 String url = "/provider/get/employee/remote"; // 3.通过RestTemplate调用远程微服务 return restTemplate.getForObject(host + url, Employee.class); }

3.3、创建一个配置类AtguiguSpringCloudConfig，加载RestTemplate：

讯享网@Configuration public class AtguiguSpringCloudConfig { @Bean @LoadBalanced public RestTemplate getRestTemplate() { return new RestTemplate(); } } 

4、spring-cloud-eureka模块需要加载的资源

<parent> <artifactId>spring-cloud-study-parent</artifactId> <groupId>org.example</groupId> <version>1.0-SNAPSHOT</version> </parent> <dependencys> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> </dependencys>

4.1、静态资源配置文件application.yml：

讯享网

讯享网server: port: 5000 eureka: instance: hostname: localhost # 配置当前Eureka服务的主机地址 client: register-with-eureka: false # 当前服务本身就是注册中心，不必“自己注册自己” fetch-registry: false # 当前服务本身就是注册中心，不必“从注册中心取回信息” service-url: # 客户端（指consumer、provider）访问当前注册中心时使用的地址 defaultZone: http://${eureka.instance.hostname}/${server.port}/eureka 

4.2、启动类要加@EnableEurekaServer注解：

/ 启用Eureka服务器端功能 @EnableEurekaServer @SpringBootApplication public class AtguiguMainType { public static void main(String[] args) { SpringApplication.run(AtguiguMainType.class, args); } }

5、spring-cloud-common模块需要加载的资源:

讯享网 <parent> <artifactId>spring-cloud-study-parent</artifactId> <groupId>org.example</groupId> <version>1.0-SNAPSHOT</version> </parent> <dependencys> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-openfeign</artifactId> </dependency> </dependencys>

5.1、创建一个实体类Employee：

public class Employee { private Integer empId; private String empName; private Double empSalary; public Employee() { } public Employee(Integer empId, String empName, Double empSalary) { super(); this.empId = empId; this.empName = empName; this.empSalary = empSalary; } @Override public String toString() { return "Employee [empId=" + empId + ", empName=" + empName + ", empSalary=" + empSalary + "]"; } public Integer getEmpId() { return empId; } public void setEmpId(Integer empId) { this.empId = empId; } public String getEmpName() { return empName; } public void setEmpName(String empName) { this.empName = empName; } public Double getEmpSalary() { return empSalary; } public void setEmpSalary(Double empSalary) { this.empSalary = empSalary; } }