使用Spring Cloud Feign远程调用

Spring Cloud Feign简介参考：http://blog.csdn.net/neosmith/article/details/52449921

根据专家学者提供的账号密码，要在用户表注册一个专家学者账号(用户和专家学者不同的数据库)

在userContorller.java写一个方法：注册专家学者账号

/** * 专家学者注册 *  * @param username * @param password * @return */@ApiOperation(value = "专家学者注册")@RequestMapping(value = "/registExpert", method = RequestMethod.POST)public long registExpert(@RequestParam("username") String username, @RequestParam("password") String password) {User user = new User();user.setUsername(username);user.setPassword(password);userService.insertSelective(user);long userId = user.getUserId();return userId;}

UserClient.java（这里的接口和要远程调用的controller方法声明一样（此处是UserController.java），可直接复制过来，如下所示）

package com.lgsc.cjbd.expert.remote.client;import org.springframework.cloud.netflix.feign.FeignClient;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RequestParam;import com.lgsc.cjbd.vo.Response;@FeignClient(name = "cjbd-user", fallback = UserClientFallback.class)public interface UserClient {/** * 注册专家学者 */@RequestMapping(value = "/user/user/registExpert", method = RequestMethod.POST)long registExpert(@RequestParam("username") String username, @RequestParam("password") String password);}

以及失败回调用UserClientFallBack.java

package com.lgsc.cjbd.expert.remote.client;import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;import org.springframework.stereotype.Component;import com.lgsc.cjbd.vo.Response;/** * 失败回调 *  * @author yeqj */@Componentpublic class UserClientFallback implements UserClient {private static Logger log = LogManager.getLogger(UserClientFallback.class);@Overridepublic long registExpert(String username, String password, String realName) {log.error("远程调用失败，注册专家学者失败，参数：[username=" + username + ",password=" + password + "]");return 0;}}

之后再专家学者Service层传递专家学者用户名和密码过去，在用户表新增专家学者注册记录

userClient.registExpert(username, password);

即可完成远程调用