REST:GET 返回 UnsupportedMediaType [英] REST: GET returns UnsupportedMediaType

问题描述

我正在尝试通过 ReST 从服务器 GET 数据.我的服务器端资源方法如下所示:

I'm trying to GET data from Server via ReST. My server-side resource method looks like this:

@GET
@Path("{id}")
@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
public PersonRepresentation getPerson(@PathParam("id") @Nonnull final Long id) {

    // collect data
    // and return representation

    return personRepresentation;
}

类定义如下:

@Path("person")
@Component
public class PersonResource {
}

现在我正在尝试对该资源进行简单的GET:

Now I'm trying to make a simple GET on that resource:

http://localhost:8080/rest/person/1234567890
Accept: application/xml

这是我的服务器响应:

HTTP Status 415 - Unsupported Media Type
type: Status report
message: Unsupported Media Type

description: The server refused this request because the request entity is in a format     
not supported by the requested resource for the requested method (Unsupported Media Type).

为什么我在使用 GET 方法时会收到此错误.我想我已经正确设置了 Accept-Header 并以推荐的方式使用了 @Produces.在谷歌搜索之后，我发现了一些解决方案"说:您必须设置请求的内容类型.但不是只有当我有一个 request-body 时才需要吗?(POST & PUT).任何想法为什么我得到 Error-Code 415 ?

Why I'm getting this error when I'm using the GET-Method. I think I've set the Accept-Header correct and used the @Produces in a way that's recommended. After googling around, I've found some "solutions" that say: you have to set the content-type of your request. But isn't it only necessary if I have a request-body ? (POST & PUT). Any ideas why I get the Error-Code 415 ?

已编辑这是我的 tomcat 控制台所说的:

edited This is what my tomcat console says:

SEVERE: A message body reader for Java class java.lang.Long, and Java type class java.lang.Long, and MIME media type application/octet-stream was not found
Feb 25, 2014 3:00:24 PM com.sun.jersey.spi.container.ContainerRequest getEntity
SEVERE: The registered message body readers compatible with the MIME media type are:
application/octet-stream ->
  com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
  com.sun.jersey.core.impl.provider.entity.FileProvider
  com.sun.jersey.core.impl.provider.entity.InputStreamProvider
  com.sun.jersey.core.impl.provider.entity.DataSourceProvider
  com.sun.jersey.core.impl.provider.entity.RenderedImageProvider
*/* ->

推荐答案

Jersey 仅支持本机类型和 Strings.将您的 getPerson 函数更改为以下内容，它应该会运行:

Jersey only supports native types and Strings. Change your getPerson function to the following and it should run:

public PersonRepresentation getPerson(@PathParam("id") final long id) {

如果您真的希望传入一个对象，另一个 Stack Overflow 问题可能有您想要的:将对象传递给使用 Jersey 的 REST Web 服务

If you really wish to pass in an object, another Stack Overflow question may have what you're looking for: Passing an object to a REST Web Service using Jersey

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