JAVA springcloud ssm b2b2c多用戶商城系統源碼-docker-feign-hystrix（六）
阿新 • • 發佈：2019-01-18
config .com -s 設置 service 啟動 class bar www. 
簡介
上一節我們討論feign的配置，這節我們討論一下，feign+hystrix調用生產者時，進行容錯處理
一、創建模塊（microservice-consumer-movie-feign-with-hystrix）
二、pom.xml文件
<?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">
<parent>
<artifactId>microservice-spring-cloud</artifactId>
<groupId>com.jacky</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>microservice-consumer-movie-feign-with-hystrix</artifactId>
<packaging>jar</packaging>
<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.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<executions>
<!--設置在執行maven 的install時構建鏡像-->
<execution>
<id>build-image</id>
<phase>install</phase>
<goals>
<goal>build</goal>
</goals>
</execution>
</executions>
<configuration>
<!--安裝了docker的主機，並且打開了api remote接口設置-->
<dockerHost>http://192.168.6.130:5678</dockerHost>
<pushImage>true</pushImage><!--設置上傳鏡像到私有倉庫，需要docker設置指定私有倉庫地址-->
<!--鏡像名稱-->
<imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
<!--鏡像的基礎版本-->
<baseImage>java:openjdk-8-jdk-alpine</baseImage>
<!--鏡像啟動參數-->
<entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
</plugins>
</build>
</project>
三、配置文件application.yml
spring:
application:
name: microservice-consumer-movie-feign-with-hystrix
server:
port: 7901
eureka:
client:
healthcheck:
enabled: true
serviceUrl:
defaultZone: http://jacky:admin@peer1:8761/eureka/,http://jacky:admin@peer2:8762/eureka/,http://jacky:admin@peer3:8763/eureka/
instance:
prefer-ip-address: true
instance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}
四、實體類User.java
package com.jacky.cloud.entity;
import java.math.BigDecimal;
public class User {
private Long id;
private String username;
private String name;
private Short age;
private BigDecimal balance;
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
public String getUsername() {
return this.username;
}
public void setUsername(String username) {
this.username = username;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public Short getAge() {
return this.age;
}
public void setAge(Short age) {
this.age = age;
}
public BigDecimal getBalance() {
return this.balance;
}
public void setBalance(BigDecimal balance) {
this.balance = balance;
}
}
五、生產者發生錯誤時使用的類（HystrixClientFallback.java）
package com.jacky.cloud.feign;
import org.springframework.stereotype.Component;
import com.jacky.cloud.entity.User;
@Component
public class HystrixClientFallback implements UserFeignClient {
@Override
public User findById(Long id) {
User user = new User();
user.setId(0L);
return user;
}
}
六、feign客戶端UserFeignClient.java
package com.jacky.cloud.feign;
import com.jacky.cloud.entity.User;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@FeignClient(name = "microservice-provider-user", fallback = HystrixClientFallback.class)
public interface UserFeignClient {
@RequestMapping(value = "/simple/{id}", method = RequestMethod.GET)
public User findById(@PathVariable("id") Long id);
}
七、MovieController.java
package com.jacky.cloud.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import com.jacky.cloud.entity.User;
import com.jacky.cloud.feign.UserFeignClient;
@RestController
public class MovieController {
@Autowired
private UserFeignClient userFeignClient;
@GetMapping("/movie/{id}")
public User findById(@PathVariable Long id) {
return this.userFeignClient.findById(id);
}
}
八、啟動類
package com.jacky.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
@EnableCircuitBreaker
public class ConsumerMovieFeignApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerMovieFeignApplication.class, args);
}
}
整體架構如下：
Spring Cloud大型企業分布式微服務雲構建的B2B2C電子商務平臺源碼請加企鵝求求：一零三八七七四六二六
JAVA springcloud ssm b2b2c多用戶商城系統源碼-docker-feign-hystrix（六）