feignclient服务间调用,feign的配置
目录
通过配置变量调用配置文件全球资源定位器(统一资源定位器)调用指定的动态URL1创建演示数字一(one)服务注射毒品创建演示注射毒品服务测试
1 .应用程序配置文件配置参数
http://127.0.0.1:87772.ISysFeignClient.java使用@FeignClient时配置
@FeignClient(value=sys ,url= $ { feign.sys } )公共接口ISysFeignClient { @ get mapping(/sys/query plat menus )list mapstring,Object query plat menus();}这样部署开发时就可以只需要修改一处阳明海运股份有限公司配置全球资源定位器(统一资源定位器)就可以了。
通过配置变量调用配置文件url
调用指定的动态URL
pom.xml
?可扩展标记语言版本=1.0 编码=UTF八号?项目xmlns= http://maven。阿帕奇。org/POM/4。0 .0 xmlns : xsi= http://www。w3。org/2001/XML schema-instance xsi :架构位置= http://maven。阿帕奇。org/POM/4。0 .0 https://maven。阿帕奇。org/xsd/maven-4。0 .0 .“xsd”模型版本4 .-从资源库中查找父级-/parentgroupid com。演示/groupid artifactid演示1/artifactid版本0。0 .1-快照/版本名称演示1/namdescriptiondemo Spring Boot项目/descriptionpropertiesjava。版本1.8/Java。版本春天-云。2020版。0 .3/春云。version/propertiesdependenciesdependencygroupidorg。spring框架。boot/groupid artifactId spring-boot-starter-web/artifactId/dependencydependencycgroupidorg。spring框架-eureka-dependencygroupidorg。spring框架。cloud/groupid artifactidspring-cloud-starter-网飞-尤里卡-客户端/artifact id/dependencydependencycgroupidorg。spring框架。boot/groupid artifactidspring-boot-starter-test/artifactIdscopetest/scope/depe
ndency></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><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>application-dev1.yml
server: port: 8111spring: application: name: ${APPLICATION_NAME:demo1}eureka: client: fetch-registry: true register-with-eureka: true service-url: defaultZone: http://localhost:18880/eureka instance: instance-id: ${spring.cloud.client.ip-address}:${server.port} prefer-ip-address: true
application-dev2.yml
server: port: 8112spring: application: name: ${APPLICATION_NAME:demo1}eureka: client: fetch-registry: true register-with-eureka: true service-url: defaultZone: http://localhost:18880/eureka instance: instance-id: ${spring.cloud.client.ip-address}:${server.port} prefer-ip-address: true
IndexController.java
package com.demo.demo1.controller;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;/** * @description: * @author: Evan * @time: 2021/8/2 17:17 */@RestControllerpublic class IndexController { @Value("${server.port}") private String port; @GetMapping("/hello") public String hello(){ System.out.println("进入" + port + "服务器"); return "返回的端口为:" + port; }}
2 创建demo2服务
pom.xml
<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.5.3</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.demo</groupId><artifactId>demo2</artifactId><version>0.0.1-SNAPSHOT</version><name>demo2</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version><spring-cloud.version>2020.0.3</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-openfeign</artifactId></dependency><!-- eureka --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>
application.yml
server: port: 8113spring: application: name: ${APPLICATION_NAME:demo2}eureka: client: fetch-registry: true register-with-eureka: true service-url: defaultZone: http://localhost:18880/eureka instance: instance-id: ${spring.cloud.client.ip-address}:${server.port} prefer-ip-address: true
DemoFeign.java
package com.demo.demo2.Feign;import org.springframework.cloud.openfeign.FeignClient;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import java.net.URI;/** * @description: * @author: Evan * @time: 2021/8/2 17:34 *///@FeignClient(name = "DEMO1", url="EMPTY")@FeignClient(name = "DEMO1", url="http://localhost:8111")public interface DemoFeign { /** * 调用demo1的接口 * @return */ @RequestMapping(value = "/hello", method = RequestMethod.GET) String hello(); /** * 调用demo1的接口 * @return */ @RequestMapping(value = "/hello", method = RequestMethod.GET) String hello1(URI uri);}
IndexController.java
package com.demo.demo2.controller;import com.demo.demo2.Feign.DemoFeign;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import java.net.URI;/** * @description: * @author: Evan * @time: 2021/8/2 17:33 */@RestControllerpublic class IndexController { @Autowired private DemoFeign demoFeign; @GetMapping("/testFeign") public String testFeign(){ System.out.println("在demo2服务中,调用demo1的服务"); String resultStr = demoFeign.hello(); System.out.println("在demo2服务中,调用demo1的服务,返回的结果:" + resultStr); return "在demo2服务中,调用demo1的服务,返回的结果:" + resultStr; } @GetMapping("/testFeign2") public String testFeign2(@RequestParam String server) throws Exception{ String url = ""; if("1".equals(server)){ url = "http://localhost:8111"; }else if("2".equals(server)){ url = "http://localhost:8112"; } System.out.println("在demo2服务中,调用demo1的服务" + url); String resultStr = demoFeign.hello1(new URI(url)); System.out.println("在demo2服务中,调用demo1的服务,返回的结果:" + resultStr); return "在demo2服务中,调用demo1的服务,返回的结果:" + resultStr; }}
测试
指定服务器ip
http://localhost:8113/testFeign2?server=1返回【在demo2服务中,调用demo1的服务,返回的结果:返回的端口为:8111】http://localhost:8113/testFeign2?server=2返回【在demo2服务中,调用demo1的服务,返回的结果:返回的端口为:8112】使用默认的地址
http://localhost:8113/testFeign返回【在demo2服务中,调用demo1的服务,返回的结果:返回的端口为:8111】以上为个人经验,希望能给大家一个参考,也希望大家多多支持盛行IT。
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