一、报错信息
错误日志内容为：
Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract com.soft.framework.core.response.CommResponse com.soft.back.openplatform.api.AdvertApi.insertAdvertTactics(com.soft.back.openplatform.model.AdvertTactics,java.lang.String) at feign.Util.checkState(Util.java:127) at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:117) at org.springframework.cloud.openfeign.support.SpringMvcContract.parseAndValidateMetadata(SpringMvcContract.java:188) at feign.Contract$BaseContract.parseAndValidatateMetadata(Contract.java:66) at feign.hystrix.HystrixDelegatingContract.parseAndValidatateMetadata(HystrixDelegatingContract.java:46) at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:154) at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:52) at feign.hystrix.HystrixFeign$Builder.target(HystrixFeign.java:70) at org.springframework.cloud.openfeign.HystrixTargeter.targetWithFallbackFactory(HystrixTargeter.java:64) at org.springframework.cloud.openfeign.HystrixTargeter.target(HystrixTargeter.java:51) at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:238) at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:267) at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:247) at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:171) ... 43 common frames omitted
二、feign多参数问题
2.1 POST方式
错误写法
@ApiOperation("保存策略型号关系") @PostMapping("/openapi/tactics/insertTacticsModel") public CommResponse<?> insertTacticsModel(@RequestBody TacticsModel tm, @RequestBody("tacticsId") Integer tacticsId){ // todo 更多代码 }
feign中你可以有多个@RequestParam，但只能有不超过一个@RequestBody。
正确写法
@ApiOperation("保存策略型号关系") @PostMapping("/openapi/tactics/insertTacticsModel") public CommResponse<?> insertTacticsModel(@RequestBody TacticsModel tm, @RequestParam("tacticsId") Integer tacticsId, @RequestParam("modelIds") String modelIds){ // todo 更多代码 }
2.2 GET方式
错误写法
@RequestMapping(value="/test", method=RequestMethod.GET) public Model test(String name, int age){ // todo 更多代码 }
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.soft.framework.core.response.CommResponse com.soft.back.openplatform.api.AdvertApi.insertAdvertTactics(com.soft.back.openplatform.model.AdvertTactics,java.lang.String)
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) public Model test(@RequestParam("name") String name, @RequestParam("age") int age){ // todo 更多代码 }
完结！
