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SpringbootFeignClient调用MethodhastoomanyBodyparameters解决

2024-04-02 19:55

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背景：在做多服务之间需要使用FeignClient进行服务调用的时候，出现PathVariable annotation was empty on param 0.，根据提示需要指定value的值，以下为具体解决过程



@Component
@FeignClient(value = "nuclear-core", fallback = CoreHystrixClientFallback.class)
public interface CoreServiceFeignClient {
 
    @GetMapping("{deviceId}/statistics/warning")
    ReturnResponse statisticsWarmingPoints(@PathVariable Long deviceId, Long startTime, Long endTime);
}

启动后报错代码为：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportApplication': Unsatisfied dependency expressed through field 'reportUtils'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportUtils': Unsatisfied dependency expressed through field 'service'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportDataOperationServiceImpl': Unsatisfied dependency expressed through field 'coreFeignClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.aimsphm.nuclear.report.feign.CoreServiceFeignClient': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException:
PathVariable annotation was empty on param 0.
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:598) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:376) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1404) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]

第二行实际为重点语句：描述为PathVariable注解作为第一个参数不能为空

改动为：


@GetMapping("{deviceId}/statistics/warning")
ReturnResponse statisticsWarmingPoints(@PathVariable(value = "deviceId") Long deviceId, Long startTime, Long endTime)

重新启动后：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportApplication': Unsatisfied dependency expressed through field 'reportUtils'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportUtils': Unsatisfied dependency expressed through field 'service'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportDataOperationServiceImpl': Unsatisfied dependency expressed through field 'coreFeignClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.aimsphm.nuclear.report.feign.CoreServiceFeignClient': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException:
 Method has too many Body parameters: public abstract com.aimsphm.nuclear.common.response.ReturnResponse com.aimsphm.nuclear.report.feign.CoreServiceFeignClient.statisticsWarmingPoints(java.lang.Long,java.lang.Long,java.lang.Long)
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:598) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:376) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1404) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:847) ~[spring-beans-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877) ~[spring-context-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.13.RELEASE.jar:5.1.13.RELEASE]
 at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.1.12.RELEASE.jar:2.1.12.RELEASE]
 at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:744) [spring-boot-2.1.12.RELEASE.jar:2.1.12.RELEASE]
 at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:391) [spring-boot-2.1.12.RELEASE.jar:2.1.12.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) [spring-boot-2.1.12.RELEASE.jar:2.1.12.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.1.12.RELEASE.jar:2.1.12.RELEASE]
 at org.springframework.boot.SpringApplication.run(SpringApplication.java:1204) [spring-boot-2.1.12.RELEASE.jar:2.1.12.RELEASE]
 at com.aimsphm.nuclear.report.ReportApplication.main(ReportApplication.java:28) [classes/:na]

依然是第二行描述为：在body中的参数有太多了，所以此时，首先确定参数是否是在body中，如果是的话，应该合成一个参数进行传递，如果不是的话，看是否应该是采用@RequestParam注解，本例中不是body中的参数，故采用@RequestParam注解

再次改动后：


 @GetMapping("{deviceId}/statistics/warning")
 ReturnResponse statisticsWarmingPoints(@PathVariable(value = "deviceId") Long deviceId, @RequestParam Long startTime, @RequestParam Long endTime);

再次启动后仍旧报错：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportApplication': Unsatisfied dependency expressed through field 'reportUtils'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportUtils': Unsatisfied dependency expressed through field 'service'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'reportDataOperationServiceImpl': Unsatisfied dependency expressed through field 'coreFeignClient'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.aimsphm.nuclear.report.feign.CoreServiceFeignClient': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException:
RequestParam.value() was empty on parameter 1

可以看到，现在报错是说参数2的value注解是空，以此再次修改


@GetMapping("{deviceId}/statistics/warning")
ReturnResponse statisticsWarmingPoints(@PathVariable(value = "deviceId") Long deviceId, @RequestParam(value = "startTime") Long startTime, @RequestParam(value = "endTime") Long endTime);

然后重新启动，成功！！

仅此，记录，下次少走弯路...

到此这篇关于Springboot FeignClient微服务间调用Method has too many Body parameters 解决的文章就介绍到这了,更多相关Springboot FeignClient微服务间调用 内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网！

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