Question

我正在尝试使用Feign为我的网络服务构建一个REST客户端。 Web服务是使用Spring 4构建的，具有xml bean配置。

该项目使用Maven构建，并使用子模块构建

foo-api
--- foo-api-client
------ src/main/java/foo/client
--------- FooClientFactory.java
------ pom.xml
--- foo-api-shared
------ src/main/java/foo/shared
--------- FooClient.java
------ pom.xml
--- foo-api-service
------ src/main
--------- /java/foo/service
------------ /config
--------------- FeignConfiguration.java
------------ /controller
--------------- FooController.java
--------- /webapp/WEB-INF
------------ spring.xml
------------ web.xml
--- pom.xml

为了启用Feign客户端，我在Spring xml配置上创建了一个带注释的类。

spring.xml

...

<context:component-scan base-package="foo.service"/>

<context:annotation-config/>

<bean class="foo.service.config.FeignConfiguration" />

...

FeignConfiguration.java

package foo.service.config;

import org.springframework.cloud.netflix.feign.EnableFeignClients;

@EnableFeignClients
public class FeignConfiguration {
}

然后我创建了一个Feign客户端并使用注释进行配置

FooClient.java

package foo.shared;

import feign.Headers;
import feign.RequestLine;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.PathVariable;

@FeignClient("foo")
public interface FooClient {

    @RequestLine("GET /foo/v2/{id}")
    @Headers("Accept: " + MediaType.APPLICATION_JSON_VALUE)
    Object get(@PathVariable("id") String id);

}

API控制器按如下方式实现Feign客户端

FooController.java

package foo.service.controller;

@Controller
@RequestMapping("/foo")
public class FooController implements FooClient {

    @Override
    @RequestMapping(value = "/v2/{id}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody Object get(@PathVariable("id") String id) {
        ...
    }

    ...

}

foo-api-client模块jar用作外部客户端与foo-api-service REST服务联系的依赖项。为了允许这些客户端轻松使用api，已经创建了一个工厂类来生成FooClient的实例。

FooClientFactory.java

package foo.client;

import foo.shared.FooClient;
import feign.Feign;
import feign.jackson.JacksonDecoder;
import feign.jackson.JacksonEncoder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Service;

@Service
public class FooClientFactory {

    @Autowired
    private Environment env;

    public static final String SERVER_URL_PROPERTY = "foo.api.url";

    public FooClient build() {
        return Feign.builder()
                .encoder(new JacksonEncoder())
                .decoder(new JacksonDecoder())
                .target(FooClient.class, env.getProperty(SERVER_URL_PROPERTY));
    }

}

问题当外部客户端使用FooClientFactory fooClientFactory.build().get("id");向foo Web服务执行请求时，将返回405错误。以下是客户端控制台上的响应日志：

ERROR [http-nio-8091-exec-1] --- [dispatcherServlet]: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is feign.FeignException: status 405 reading FooClient#get(String); content:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Error 405 Request method &apos;POST&apos; not supported</title>
</head>
<body><h2>HTTP ERROR 405</h2>
<p>Problem accessing /foo/v2/{id}. Reason:
<pre>    Request method &apos;POST&apos; not supported</pre></p><hr><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.3.7.v20160115</a><hr/>

</body>
</html>
] with root cause
feign.FeignException: status 405 reading FooClient#getOrder(String); content:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Error 405 Request method &apos;POST&apos; not supported</title>
</head>
<body><h2>HTTP ERROR 405</h2>
<p>Problem accessing /foo/v2/{id}. Reason:
<pre>    Request method &apos;POST&apos; not supported</pre></p><hr><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.3.7.v20160115</a><hr/>

</body>
</html>

我在stackoverflow和其他博客周围搜索过这类问题，但我无法理解整个设置有什么问题。

有什么想法吗？

谢谢，安德烈

Answer 1

我在路径中看到两个“ foo”。

@FeignClient("foo")和@RequestLine("GET /foo/v2/{id}")

将路径设置为/foo/foo/v2/{id}，但是您的呼叫应该到/foo/v2/{id}。

能否请您删除“ / foo”

Spring Cloud Netflix Feign - 错误405不支持请求方法“POST”

1 个答案: