Spring Cloud 服务发布与调用
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1. 发布服务
引入相关依赖pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://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>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.zws.cloud</groupId>
<artifactId>Eurka-Producer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Eurka-Producer</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Eureka 客户端依赖 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
配置Eureka Server地址 application.yml
server:
port: 8080
eureka:
client:
serviceUrl:
defaultZone: https://localhost:8761/eureka/
spring:
application:
name: Eureka-Producer
发布一个服务，其实就是一个Http接口，如下：
package com.zws.cloud.producer;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @Author wensh.zhu
* @Date 2019/2/16 19:33
*/
@RestController
public class HelloController {
@GetMapping("/hello")
public String hello() {
return "hello";
}
}
启动
package com.zws.cloud.producer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class EurekaProducerApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaProducerApplication.class, args);
}
}
2. 调用服务
依赖配置pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://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>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.zws.cloud</groupId>
<artifactId>Eurka-Producer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Eurka-Producer</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<!-- Ribbon用于客户端负载均衡 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</dependency>
<!-- Feign用于服务发现与调用 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
启用Ribbon负载均衡以及Feign接口注入，application.yml
server:
port: 8088
eureka:
client:
serviceUrl:
defaultZone: https://localhost:8761/eureka/
spring:
application:
name: Eureka-Consumer
定义Feign客户端以及熔断回调
package com.zws.cloud.consumer;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
/**
* @Author wensh.zhu
* @Date 2019/2/16 15:14
*/
@FeignClient(value = "Eureka-Producer", fallbackFactory = HelloClientFallbackFactory.class)
public interface HelloClient {
@GetMapping("/hello")
String hello();
}
package com.zws.cloud.consumer;
import feign.hystrix.FallbackFactory;
import org.springframework.stereotype.Component;
/**
* @Author wensh.zhu
* @Date 2019/2/16 16:12
*/
@Component
public class HelloClientFallbackFactory implements FallbackFactory<String>, HelloClient {
@Override
public String create(Throwable throwable) {
return this.hello();
}
@Override
public String hello() {
return "";
}
}
1. 发布服务
引入相关依赖pom.xml
<?xml version="1.0" encoding
