springcloud hystrix

最新推荐文章于 2025-03-28 14:58:08 发布

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本文详细介绍了使用Spring Cloud搭建微服务架构的过程，包括POM文件配置、服务注册与发现、Feign客户端调用及Hystrix熔断器的实现。通过具体代码示例，展示了如何在Spring Boot项目中集成Eureka、Feign和Hystrix，实现服务间的通信和故障隔离。

1.pom文件

<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>com.knife</groupId>
	<artifactId>CustomerTest</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>CustomerTest</name>
	<url>http://maven.apache.org</url>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.5.RELEASE</version>
		<relativePath />
	</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.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<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.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</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>
</project>

2.配置

spring: 
  application: 
    name: customerTest
server:
  port: 4444
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:10000/eureka/
feign:
  hystrix:
    enabled: true

3.service代码

package com.knife.CustomerTest;

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;

@Component
@FeignClient(value="providerTest",fallback=HystrixTest.class)
public interface TestService {

	@GetMapping("/test")
    String test();
	
}

4.熔断器

package com.knife.CustomerTest;

import org.springframework.stereotype.Service;

@Service
public class HystrixTest implements TestService {

	@Override
	public String test() {
		// TODO Auto-generated method stub
		return "this is HystrixTest";
	}

}

5.测试依次启动euraka和客户端