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Spring Cloud RestTemplate报错：java.lang.IllegalStateException: No instances available for java.lang.IllegalStateException: No instances available for localhost 原：restTemplate.getForObject( uri+"/user/getname",User.class); //uri为得到的地址 如：http://127.0.0.1改：rrestTemplate.getForObject( "http://user-api/user/getname",User.class);//改为在eureka上注册的application.name restTemplate访问https，这个暂时没有去测试，希望对大家有用https://cloud.tencent.com/developer/article/1339988 -
SpringCloud Feign报错 Caused by: java.lang.IllegalStateException: Method has too many Body parameters Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract com.hujiang.framework.web.domain.AjaxResult com.hujiang.project.zhgd.client.SystemClient.getSystemPrivileges_app(java.lang.Integer,java.lang.Integer)GET方式错误写法@RequestMapping(value="/test", method=RequestMethod.GET) User test(String name, int age); 启动服务的时候，会报如下异常：Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract com.hujiang.framework.web.domain.AjaxResult com.hujiang.project.zhgd.client.SystemClient.getSystemPrivileges_app(java.lang.Integer,java.lang.Integer)异常原因：当使用Feign时，如果发送的是get请求，那么需要在请求参数前加上@RequestParam注解修饰，Controller里面可以不加该注解修饰。正确写法@RequestMapping(value="/test", method=RequestMethod.GET) User test(@RequestParam("name") String name,@RequestParam("age") int age); POST方式 错误写法public int save(@RequestBody Person p, @RequestBody UserModel user);feign中你可以有多个@RequestParam，但只能有不超过一个@RequestBody。正确写法public int save(@RequestBody Person p,@RequestParam("userId") String userId,@RequestParam("userTel") String userTel);
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