1. 工程结构
2. 父工程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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/>
</parent>
<groupId>com.anycode</groupId>
<artifactId>springcloud-lk</artifactId>
<version>1.0-SNAPSHOT</version>
<modules>
<module>springcloud-api</module>
<module>springcloud-provider-user-8001</module>
<module>springcloud-provider-user-8002</module>
<module>springcloud-consumer-user-feign</module>
</modules>
<!--打包方式-->
<packaging>pom</packaging>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
<spring-cloud-alibaba-dependencies.version>2.1.1.RELEASE</spring-cloud-alibaba-dependencies.version>
<junit.version>4.12</junit.version>
<log4j.version>1.2.17</log4j.version>
<lombok.version>1.16.18</lombok.version>
</properties>
<dependencyManagement>
<dependencies>
<!--springCloud的依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring-cloud-alibaba-dependencies.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>
3. springcloud-api 模块只是提供一个实体
4. springcloud-provider-user-8001 服务提供者模块
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>springcloud-lk</artifactId>
<groupId>com.anycode</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>springcloud-provider-user-8001</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.anycode</groupId>
<artifactId>springcloud-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--nacos客户端-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<!--热部署工具-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</project>
@RestController
@RequestMapping("/user")
public class UserController {
@GetMapping("/{id}")
public User getUser(@PathVariable("id") int id) {
System.out.println("call provide-user-8001");
return new User("Anycode", 18, "anycode@163.com", "北京");
}
}
@SpringBootApplication
@EnableDiscoveryClient
public class SpringcloudProviderUser8001 {
public static void main(String[] args) {
SpringApplication.run(SpringcloudProviderUser8001.class, args);
}
}
5. springcloud-provider-user-8002
与springcloud-provider-user-8001 完全一样, 用于启动两个服务测试负载均衡.
6. springcloud-consumer-user-feign
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>springcloud-lk</artifactId>
<groupId>com.anycode</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>springcloud-consumer-user-feign</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<!--nacos客户端-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>com.anycode</groupId>
<artifactId>springcloud-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
Feign客户端开发, 照猫画虎, 和Controller异曲同工.
@FeignClient(name = "springcloud-provider-user", path = "/user")
public interface UserService {
@GetMapping("/{id}")
public User getUser(@PathVariable("id") int id);
}
启动类
@SpringBootApplication
@EnableDiscoveryClient //注册服务
@EnableFeignClients // 开启Feign
public class SpringcloudConsumerUserFeign {
public static void main(String[] args) {
SpringApplication.run(SpringcloudConsumerUserFeign.class, args);
}
}