spring boot假装客户端收到HTTP 404

我目前正在检查如何在我的一个项目中使用Feign作为声明式REST客户端。

下面是Feign Client

@FeignClient(name = "SEARCHCABMS",configuration = AppFeignConfiguration.class)
       public interface SearchCabMsClient {
        @RequestMapping(value = "api/searchcab/locationcabtimedetail/search/getCabForLocationAfterTimeSlot", method = RequestMethod.GET)
        String  searchCabDetails(@PathVariable("fromDate") String fromDate, 
                                @PathVariable("locationId") long locationId,
                                @PathVariable("isdeleted") byte isdeleted,
                                @PathVariable("hourforbooking")int hourforbooking);
    }

此接口在一个服务中自动连接

@Autowired
SearchCabMsClient restService;

添加EnableFeignClients到SpringBootApplication

@EnableFeignClients(basePackages = {"com.gp.cabbooking.services.feign"})

pom.xml中的依赖项、父项等

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.5.RELEASE</version>
</parent>

依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-feign</artifactId>
</dependency>

我可以看到，而调试弹簧创建代理为我的假客户端我试着在ribbon的帮助下调用这个服务，它工作得很好但是当我在伪客户机中执行方法定义时。我开始假装了。feigexception: status 404 reading

feign.FeignException: status 404 reading SearchCabMsClient#searchCabDetails(String,long,byte,int)
    at feign.FeignException.errorStatus(FeignException.java:62) ~[feign-core-8.16.2.jar:8.16.2]
    at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:91) ~[feign-core-8.16.2.jar:8.16.2]
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:134) ~[feign-core-8.16.2.jar:8.16.2]
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76) ~[feign-core-8.16.2.jar:8.16.2]
    at feign.hystrix.HystrixInvocationHandler$1.run(HystrixInvocationHandler.java:97) ~[feign-hystrix-8.16.2.jar:8.16.2]
    at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:293) ~[hystrix-core-1.5.3.jar:1.5.3]
    at com.netflix.hystrix.HystrixCommand$1.call(HystrixCommand.java:289) ~[hystrix-core-1.5.3.jar:1.5.3]
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:50) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:50) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.Observable.unsafeSubscribe(Observable.java:8460) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35) ~[rxjava-1.1.5.jar:1.1.5]
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:50) ~[rxjava-1.1.5.jar:1.1.5]

需要创建一个feign.ErrorDecoder。请阅读这篇文章了解更多信息https://github.com/spring-cloud/spring-cloud-openfeign/issues/118

您还可以在FeignClient注释定义中添加decode404=true。

您是否定义了使用此虚拟客户端所访问的服务的url ?404是未发现的问题。

  @FeignClient(name = "SEARCHCABMS", url = "${SEARCHCABMS.service.url}", 
  configuration = ClientConfiguration.class)
  public interface SearchCabMsClient {
  }

在url中使用引用持有人有助于将其外部化并针对每个环境进行配置。

如果您配置了URL，则检查其余端点

我也遇到了同样的问题。这是一个路由问题。只需在FeignClient的@RequestMapping path中开始添加/。此外，路径变量不在路径中定义。我建议将它们定义为@RequestParam。那么路径是正确的，除了/在开始。

@FeignClient(name = "SEARCHCABMS",configuration = AppFeignConfiguration.class)
   public interface SearchCabMsClient {
    @RequestMapping(value = "/api/searchcab/locationcabtimedetail/search/getCabForLocationAfterTimeSlot/{fromDate}/{locationId}/{isdeleted}/{hourforbooking}", method = RequestMethod.GET)
    String  searchCabDetails(@PathVariable("fromDate") String fromDate, 
                            @PathVariable("locationId") long locationId,
                            @PathVariable("isdeleted") byte isdeleted,
                            @PathVariable("hourforbooking")int hourforbooking);
}

大多数答案建议将url属性放在@FeignClient，但是当架构涉及到注册服务(Eureka Client)与Eureka Server时，我认为，没有使用url属性的自由。

必须使用service-id或eureka-id用于rest调用。
对于client-side discovery architecture，

@FeignClient(name = "service-id", url = "${service.url}", configuration=SomeConfig.class)

可能不再是
的可伸缩解决方案。status 404 reading IFeignClient#someControllerMethod()错误。

我在client-side discovery architecture应用程序中遇到了同样的错误。问题是application.yml文件中的这个条目:

server:
  servlet:
    context-path: /myapp

删除它有助于通过正确的url解决问题。我的工作应用程序的确切声明:@FeignClient(name="${service-id}")

希望这能帮助到有类似问题的人。

如果您已经设置了server.servlet。上下文路径:##一些名称##，删除它并设置应用程序名称显示在EUREKA服务器的主页

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