RESTEasy - javax.ws.rs.NotFoundException：无法找到完整路径的资源 [英] RESTEasy - javax.ws.rs.NotFoundException: Could not find resource for full path

问题描述

我试图在GWT项目中使用RESTEasy实现REST服务，但是当我进入相应的URI时，应用程序将返回：

  Grave：未能执行
 javax.ws.rs.NotFoundException：无法找到完整路径的资源：http://127.0.0.1:8888/api/matches 
 org。 jboss.resteasy.core.registry.ClassNode.match（ClassNode.java:73）
 at org.jboss.resteasy.core.registry.RootClassNode.match（RootClassNode.java:48）
 at org。 jboss.resteasy.core.ResourceMethodRegistry.getResourceInvoker（ResourceMethodRegistry.java:444）
 at org.jboss.resteasy.core.SynchronousDispatcher.getInvoker（SynchronousDispatcher.java:234）
 at org.jboss.resteasy。 core.SynchronousDispatcher.invoke（SynchronousDispatcher.java:171）
 org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service（ServletContainerDispatcher.java:220）
 at org.jboss.resteasy。 plugins.server.servlet.HttpServletDispatcher.service（HttpServletD在HttpServlet.service（HttpServlet.java:56）
在org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service（HttpServletDispatcher.java:51）
在javax.servlet.http.HttpServlet.service java：717）
  

我的web.xml是：

 <？xml version =1.0encoding =UTF-8standalone =no？>< web-app xmlns =http：// java .sun.com / xml / ns / javaeexmlns：xsi =http://www.w3.org/2001/XMLSchema-instanceversion =2.5xsi：schemaLocation =http：//java.sun。 com / xml / ns / javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd\"> 
 
 <！ - 所有REST资源都将以/ api  - >为前缀。 
< context-param> 
< param-name> resteasy.servlet.mapping.prefix< / param-name> 
< param-value> / api< /参数值> 
< / context-param> 
 
<！ -  Servlets  - > 
< servlet> 
< servlet-name> Resteasy< / servlet-name> 
< servlet-class> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher< / servlet-class> 
< init-param> 
< param-name> javax.ws.rs.Application< / param-name> 
< param-value> eii.api.MatchApplication< / param-value> 
< / init-param> 
< / servlet> 
 
<！ -  Servlet映射 - > 
 <！ - 所有对/ api / xxx的调用都将被发送到reasy servlet  - > 
< servlet-mapping> 
< servlet-name> Resteasy< / servlet-name> 
< url-pattern> / api / *< / url-pattern> 
< / servlet-mapping> 
 
< / web-app> 
  

执行申请：

  public class MatchApplication extends Application {
 private Set< Object> singletons = new HashSet< Object>（）; 
 private Set< Class<？>> classes = new HashSet< Class<>>（）; 
 
 public MatchApplication（）{
 singletons.add（new MatchServiceImpl（））; 
} 
 
 @Override 
 public Set< Class<>> getClasses（）{
返回类; 
} 
 
 @Override 
 public Set< Object> getSingletons（）{
返回单身人士; 
 
 
 $ / code> 

以下是提供REST服务的类：

  / *汇入* / 
 ... 
 @Path（/ matches）
 public class MatchResource {
 private static MatchResource _instance = null; 
专用MatchRepository存储库; 
 
 public MatchResource（）{
 repository = new MapMatchRepository（）; 
 
 $ b $ public static MatchResource getInstance（）{
 if（_instance == null）
 _instance = new MatchResource（）; 
 return _instance; 
 
 $ b @GET 
 @Path（/ {id}）
 @Produces（application / json）
 public Match getMatch（ @PathParam（id）int id）{
 return repository.getMatch（id）; 
} 
 
 @GET 
 @Produces（application / json）
公共匹配getMatchesCurrentRound（）{
 return repository.getMatchesCurrentRound（）; 
} 
 
 ... 
} 
  

我想要的是在进入时返回一个JSON文件，例如： http://127.0.0.1:8888/api/matches

有人知道我在做什么错吗？

编辑：

如果我访问 http://127.0.0.1:8888/api/ 或 http://127.0.0.1： 8888 / api / * （其中*是您想要编写的任何内容），浏览器不显示任何内容。但是，如果我访问 http://127.0.0.1:8888/oqiwn （其中 oqiwn 是随机字符串）浏览器显示错误404 。

另外，我尝试了RESTClient插件，它们是返回的答案：

使用 http://127.0.0.1:8888/api/ 或 http ：//127.0.0.1：8888 / api / *

 状态码：404未找到
 Cache-Control：no-cache 
内容长度：0 
日期：2013年11月10日星期日22:59:57 GMT 
过期时间：1990年1月1日星期五00:00 ：00 GMT 
服务器：开发/ 1.0 
  

http ：//127.0.0.1：8888 / oqiwn

 状态码：404未找到
 Cache-Control：no-cache 
 Content-Length：83 
 Content-Type：text / html; charset = iso-8859-1 
日期：2013年11月10日星期日22:59:05 GMT 
过期时间：1990年1月1日星期五00:00:00 GMT 
服务器：Development / 1.0 
  

请注意 Content-Type：text / html;

解决方案

您添加了资源使用名为 getMatches（）的方法，Resteasy对此一无所知。您需要重写 Application 的 getSingletons（）方法，并从那里返回您的根资源，如下所示。 p>



  public class MatchApplication extends Application {
 private Set< Object> singletons = new HashSet< Object>（）; 
 private Set< Class<？>> classes = new HashSet< Class<>>（）; 
 
 public MatchApplication（）{
 singletons.add（new MatchServiceImpl（））; 
} 
 
 @Override 
 public Set< Class<>> getClasses（）{
返回类; 
} 
 
 @Override 
 public Set< Object> getSingletons（）{
返回单身人士; 
} 
} 
  

I've tried to implement a REST service with RESTEasy in a GWT project, but when I get into the respective URI the application returns:

Grave: failed to execute
javax.ws.rs.NotFoundException: Could not find resource for full path: http://127.0.0.1:8888/api/matches
    at org.jboss.resteasy.core.registry.ClassNode.match(ClassNode.java:73)
    at org.jboss.resteasy.core.registry.RootClassNode.match(RootClassNode.java:48)
    at org.jboss.resteasy.core.ResourceMethodRegistry.getResourceInvoker(ResourceMethodRegistry.java:444)
    at org.jboss.resteasy.core.SynchronousDispatcher.getInvoker(SynchronousDispatcher.java:234)
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:171)
    at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

My web.xml is:

<?xml version="1.0" encoding="UTF-8" standalone="no"?><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee                http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

  <!-- All REST resources will be prefixed by /api -->
  <context-param>
    <param-name>resteasy.servlet.mapping.prefix</param-name>
    <param-value>/api</param-value>
  </context-param>

  <!-- Servlets -->
  <servlet>
    <servlet-name>Resteasy</servlet-name>
    <servlet-class>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher</servlet-class>
    <init-param>
        <param-name>javax.ws.rs.Application</param-name>
        <param-value>eii.api.MatchApplication</param-value>
    </init-param>
  </servlet>

  <!-- Servlet mappings -->
  <!-- All calls to /api/xxx will be sent to the reasy servlet -->
  <servlet-mapping>
    <servlet-name>Resteasy</servlet-name>
    <url-pattern>/api/*</url-pattern>
  </servlet-mapping>

</web-app>

The implementation of Application:

public class MatchApplication extends Application {
    private Set<Object> singletons = new HashSet<Object>();
    private Set<Class<?>> classes = new HashSet<Class<?>>();

    public MatchApplication() {
        singletons.add(new MatchServiceImpl());
    }

    @Override
    public Set<Class<?>> getClasses() {
        return classes;
    }

    @Override       
    public Set<Object> getSingletons() {
        return singletons;
    }
}

And here's the class that provide the REST service:

 /* Imports */
    ...
@Path("/matches")
public class MatchResource {
    private static MatchResource _instance = null;
    private MatchRepository repository;

    public MatchResource() {
        repository = new MapMatchRepository(); 
    }

    public static MatchResource getInstance() {
        if (_instance == null)
            _instance = new MatchResource();
        return _instance;
    }

    @GET
    @Path("/{id}")
    @Produces("application/json")
    public Match getMatch(@PathParam("id") int id) {
        return repository.getMatch(id);
    }

    @GET
    @Produces("application/json")
    public Matches getMatchesCurrentRound() {
        return repository.getMatchesCurrentRound();
    }

        ...
}

What I want is to return a JSON file when getting into, for example: http://127.0.0.1:8888/api/matches

Does anyone know what I'm doing wrong?

Edit:

If I access to http://127.0.0.1:8888/api/ or http://127.0.0.1:8888/api/* (where * is whatever you want to write), the browser shows nothing. However, if I access to http://127.0.0.1:8888/oqiwn (where oqiwn is a random string) the browser shows a Error 404.

Also, I tried the RESTClient addon and these are the answers that returns:

With http://127.0.0.1:8888/api/ or http://127.0.0.1:8888/api/*

Status Code: 404 Not Found
Cache-Control: no-cache
Content-Length: 0
Date: Sun, 10 Nov 2013 22:59:57 GMT
Expires: Fri, 01 Jan 1990 00:00:00 GMT
Server: Development/1.0

And with http://127.0.0.1:8888/oqiwn

Status Code: 404 Not Found
Cache-Control: no-cache
Content-Length: 83
Content-Type: text/html; charset=iso-8859-1
Date: Sun, 10 Nov 2013 22:59:05 GMT
Expires: Fri, 01 Jan 1990 00:00:00 GMT
Server: Development/1.0

Note that Content-Type: text/html; charset=iso-8859-1 is not in the first one.

解决方案

You added your resource using a method named getMatches(), which Resteasy knows nothing about. You need to override the getSingletons() method of Application and return your root resources from there as shown below.

Documentation Here

Example:

public class MatchApplication extends Application {
    private Set<Object> singletons = new HashSet<Object>();
    private Set<Class<?>> classes = new HashSet<Class<?>>();

    public MatchApplication() {
        singletons.add(new MatchServiceImpl());
    }

    @Override
    public Set<Class<?>> getClasses() {
        return classes;
    }

    @Override
    public Set<Object> getSingletons() {
        return singletons;
    }
}

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