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<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>cn.netkiller.spring.cloud.netflix</groupId> <artifactId>feign.client</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>feign.client</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.3.RELEASE</version> <relativePath /> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <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> <version>1.3.1.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-feign</artifactId> <version>1.3.1.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <configuration> <skip>true</skip> </configuration> </plugin> </plugins> </build> </project>
package cn.netkiller.spring.cloud.netflix.feign.client; import org.springframework.beans.factory.annotation.Autowired; 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.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @SpringBootApplication @EnableEurekaClient @EnableFeignClients @RestController public class Application { @Autowired private GreetingClient greetingClient; @RequestMapping("/get-greeting") public String greeting() { return greetingClient.greeting(); } public static void main(String[] args) { SpringApplication.run(Application.class, args); System.out.println("Hello World!"); } }
package cn.netkiller.spring.cloud.netflix.feign.client; import org.springframework.cloud.netflix.feign.FeignClient; import org.springframework.web.bind.annotation.RequestMapping; @FeignClient("test-service") public interface GreetingClient { @RequestMapping("/greeting") String greeting(); }
@FeignClient("test-service") 是 Eureka Client application.properties 中的 spring.application.name 配置项
@RequestMapping("/greeting") 是 Eureka Client RestController 中的 @RequestMapping
spring.application.name=spring-cloud-eureka-feign-client server.port=8088 #eureka.client.register-with-eureka=false #eureka.client.fetch-registry=false eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/ feign.compression.response.enabled=true feign.compression.request.enabled=true feign.compression.request.mime-types=text/xml,application/xml,application/json feign.compression.request.min-request-size=2048
@FeignClient(value = "restful-api-service", fallback = UserServiceFeignClientFallback.class) public interface UserServiceFeignClient { @RequestMapping(value = "/api/user/{id}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE) User getUser(@PathVariable("id") int id); @RequestMapping(value = "/api/user/search/findByName?name={name}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE) User findUserByName(@PathVariable("name") String name); @RequestMapping(value = "/api/user/search/findByAddress?address={address}", method = RequestMethod.GET) String findUserByAddress(@PathVariable("address") String address); }
@Component public class UserServiceFeignClientFallback implements UserServiceFeignClient { @Override public User getUser(int id) { return new User("getUser.Fallback", "feignClient return"); } @Override public User findUserByName(String name) { return new User("findUserByName.Fallback", "feignClient return"); } @Override public String findUserByAddress(String address) { return "fallback"; } }