标签:beans actor public erro ring ppi any framework app
今天遇到使用Feign调用微服务,传递参数时遇到几个问题
1.RequestParam.value() was empty on parameter 0
@RequestMapping("/test")
String test(@RequestParam String name);
解决方法:
加上注解的描述,修改为
@RequestMapping("/test")
String test(@RequestParam("name") String name);
如果是@RequestBody不需要注解的描述
@RequestMapping("/test")
String test(@RequestBody String name);
2.Feign多参数的问题
@RequestMapping("/test")
String test(String name, Integer type);
遇到报错Method has too many Body parameters
具体描述如下
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘feignController‘: Unsatisfied dependency expressed through field ‘remoteHelloService‘; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘com.xyz.comsumer.feign.RemoteHelloService‘: FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract java.lang.String com.xyz.comsumer.feign.RemoteHelloService.test(java.lang.String,java.lang.Integer)
正确的写法
@RequestMapping("/test")
String test(@RequestParam("name") String name, @RequestParam("type") Integer type);
总结:
请求参数前加上注解@RequestParam或@RequestBody修饰
可以有多个@RequestParam,但只能有不超过一个@RequestBody
@RequestBody用来修饰对象,但是既有@RequestBody也有@RequestParam,那么参数就要放在请求的url中,@RequestBody修饰的就要放在提交对象中
标签:beans actor public erro ring ppi any framework app
原文地址:https://www.cnblogs.com/baby123/p/12014117.html