簡(jiǎn)介

Spring Cloud大型企業(yè)分布式微服務(wù)云構(gòu)建的B2B2C電子商務(wù)平臺(tái)源碼請(qǐng)加企鵝求求：一零三八七七四六二六。上一節(jié)，我們討論了怎么通過，restTemlate調(diào)用cloud的生產(chǎn)者，實(shí)現(xiàn)起來還是比較復(fù)雜的，尤其是在消費(fèi)復(fù)雜的Restful服務(wù)的時(shí)候，還需要進(jìn)行一系列的轉(zhuǎn)換，編解碼等，使用Feign就完全不用考慮這個(gè)問題.。

一、feinn介紹

Feign是一種聲明式、模板化的HTTP客戶端。在Spring Cloud中使用Feign, 我們可以做到使用HTTP請(qǐng)求遠(yuǎn)程服務(wù)時(shí)能與調(diào)用本地方法一樣的編碼體驗(yàn)，開發(fā)者完全感知不到這是遠(yuǎn)程方法，更感知不到這是個(gè)HTTP請(qǐng)求，這整個(gè)調(diào)用過程和Dubbo的RPC非常類似。開發(fā)起來非常的優(yōu)雅。

二、創(chuàng)建模塊（microservice-consumer-movie-feign）

項(xiàng)目結(jié)構(gòu)如下：

三、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"><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</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-oauth2</artifactId></dependency>--></dependencies><build><plugins><plugin><groupId>com.spotify</groupId><artifactId>docker-maven-plugin</artifactId><executions><!--設(shè)置在執(zhí)行maven 的install時(shí)構(gòu)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(jī)，并且打開了api remote接口設(shè)置--><dockerHost>http://192.168.6.130:5678</dockerHost><pushImage>true</pushImage><!--設(shè)置上傳鏡像到私有倉(cāng)庫(kù)，需要docker設(shè)置指定私有倉(cāng)庫(kù)地址--><!--鏡像名稱--><imageName>${docker.repostory}/${docker.image.prefix}/${project.artifactId}:${project.version}</imageName><!--鏡像的基礎(chǔ)版本--><baseImage>java:openjdk-8-jdk-alpine</baseImage><!--鏡像啟動(dòng)參數(shù)--><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>

四、配置文件application.yml

spring:application:name: microservice-consumer-movie-feign server:port: 7901 eureka:client:healthcheck:enabled: trueserviceUrl:defaultZone: http://jacky:admin@peer1:8761/eureka/,http://jacky:admin@peer2:8762/eureka/,http://jacky:admin@peer3:8763/eureka/ instance:prefer-ip-address: trueinstance-id: ${spring.application.name}:${spring.cloud.client.ipAddress}:${spring.application.instance_id:${server.port}}

五、MovieController.java

package com.jacky.cloud.controller;import com.jacky.cloud.entity.User; import com.jacky.cloud.feign.UserFeignClient; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.client.RestTemplate;/*** Created by jacky on 2017/7/14.*/ @RestController public class MovieController {@Autowiredprivate UserFeignClient userFeignClient;@GetMapping("/movie/{id}")public User findById(@PathVariable Long id) {return this.userFeignClient.findById(id);}@GetMapping("/test")public User testPost(User user) {return this.userFeignClient.postUser(user);}@GetMapping("/test-get")public User testGet(User user) {return this.userFeignClient.getUser(user);} }

六、實(shí)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;}}

七、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.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod;/*** Created by jacky on 2017/7/14.*/ @FeignClient("microservice-provider-user") public interface UserFeignClient {/*** 根據(jù)Id獲得User* 兩個(gè)坑：1. @GetMapping不支持 2. @PathVariable得設(shè)置value* @param id* @return*/@RequestMapping(value = "/simple/{id}", method = RequestMethod.GET)public User findById(@PathVariable("id") Long id);@RequestMapping(value = "/user", method = RequestMethod.POST)public User postUser(@RequestBody User user);// 該請(qǐng)求不會(huì)成功，只要參數(shù)是復(fù)雜對(duì)象，即使指定了是GET方法，feign依然會(huì)以POST方法進(jìn)行發(fā)送請(qǐng)求。可能是我沒找到相應(yīng)的注解或使用方法錯(cuò)誤。// 也就是說復(fù)雜對(duì)象，feign一定要post的請(qǐng)求方式@RequestMapping(value = "/get-user", method = RequestMethod.GET)public User getUser(User user); }

八、啟動(dòng)類(MicroserviceSimpleConsumerMovieApplication.java)

package com.jacky.cloud;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; import org.springframework.cloud.netflix.feign.EnableFeignClients; import org.springframework.context.annotation.Bean; import org.springframework.web.client.RestTemplate;@SpringBootApplication @EnableEurekaClient @EnableFeignClients public class MicroserviceSimpleConsumerMovieApplication {public static void main(String[] args) {SpringApplication.run(MicroserviceSimpleConsumerMovieApplication.class, args);} }

需要JAVASpring Cloud大型企業(yè)分布式微服務(wù)云構(gòu)建的B2B2C電子商務(wù)平臺(tái)源碼請(qǐng)加企鵝求求：一零三八七七四六二六

標(biāo)簽：springcloud,spring cloud,springcloud微服務(wù),b2b2c,o2o電子商務(wù),java多用戶商城系統(tǒng)

轉(zhuǎn)載于:https://www.cnblogs.com/sunnysunny/p/10836932.html

總結(jié)

以上是生活随笔為你收集整理的java springcloud版b2b2c社交电商spring cloud分布式微服务-docker-feign(四)的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。