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使用GWT和REST时发生异常

2013-01-07 251 views
0

我创建了REST Web服务。然后尝试使用GWT访问它。但我得到了以下错误使用GWT和REST时发生异常

com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider 
SEVERE: The provider class, class com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General, could not be instantiated. Processing will continue but the class will not be utilized 
java.lang.IllegalArgumentException: argument type mismatch 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) 
    at java.lang.reflect.Constructor.newInstance(Unknown Source) 
    at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:127) 
    at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:135) 
    at com.sun.jersey.core.spi.component.ComponentConstructor._getInstance(ComponentConstructor.java:198) 
    at com.sun.jersey.core.spi.component.ComponentConstructor.getInstance(ComponentConstructor.java:169) 
    at com.sun.jersey.core.spi.component.ProviderFactory.__getComponentProvider(ProviderFactory.java:166) 
    at com.sun.jersey.core.spi.component.ProviderFactory.getComponentProvider(ProviderFactory.java:137) 
    at com.sun.jersey.core.spi.component.ProviderServices.getComponent(ProviderServices.java:256) 
    at com.sun.jersey.core.spi.component.ProviderServices.getServices(ProviderServices.java:160) 
    at com.sun.jersey.core.spi.factory.MessageBodyFactory.initWriters(MessageBodyFactory.java:207) 
    at com.sun.jersey.core.spi.factory.MessageBodyFactory.init(MessageBodyFactory.java:163) 
    at com.sun.jersey.api.client.Client.init(Client.java:342) 
    at com.sun.jersey.api.client.Client.access$000(Client.java:118) 
    at com.sun.jersey.api.client.Client$1.f(Client.java:191) 
    at com.sun.jersey.api.client.Client$1.f(Client.java:187) 
    at com.sun.jersey.spi.inject.Errors.processWithErrors(Errors.java:197) 
    at com.sun.jersey.api.client.Client.<init>(Client.java:187) 
    at com.sun.jersey.api.client.Client.<init>(Client.java:170) 
    at com.sun.jersey.api.client.Client.create(Client.java:679) 
    at com.mycompany.newwebapplicationproject.server.GreetingServiceImpl.greetServer(GreetingServiceImpl.java:29) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115) 
    at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:561) 
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208) 
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248) 
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) 
    at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:61) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97) 
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157) 
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388) 
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) 
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) 
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765) 
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) 
    at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94) 
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:383) 
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) 
    at org.mortbay.jetty.Server.handle(Server.java:326) 
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) 
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938) 
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755) 
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218) 
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) 
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) 
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) 
7 Jan, 2013 11:55:48 AM com.sun.jersey.spi.inject.Errors processErrorMessages 
SEVERE: The following errors and warnings have been detected with resource and/or provider classes: 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.SourceProvider$SAXSourceReader(com.sun.jersey.spi.inject.Injectable) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.SourceProvider$DOMSourceReader(com.sun.jersey.spi.inject.Injectable) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$App(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$Text(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General(com.sun.jersey.spi.inject.Injectable,javax.ws.rs.ext.Providers) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.SourceProvider$SourceWriter(com.sun.jersey.spi.inject.Injectable,com.sun.jersey.spi.inject.Injectable) at parameter index 0 
    SEVERE: Missing dependency for constructor public com.sun.jersey.core.impl.provider.entity.SourceProvider$SourceWriter(com.sun.jersey.spi.inject.Injectable,com.sun.jersey.spi.inject.Injectable) at parameter index 1 
com.sun.jersey.spi.inject.Errors$ErrorMessagesException

以下是GWT

public class GreetingServiceImpl extends RemoteServiceServlet implements 
     GreetingService { 

    public String greetServer(String input) throws IllegalArgumentException { 
     try { 

      getBaseURI(); 
      ClientConfig config = new DefaultClientConfig(); 
      Client client=Client.create(config); 
      WebResource service = client.resource(getBaseURI()); 

      System.out.println(service.path("hello") 
        .accept(MediaType.TEXT_PLAIN).get(ClientResponse.class) 
        .toString()); 

      System.out.println(service.path("hello") 
        .accept(MediaType.TEXT_PLAIN).get(String.class)); 

      System.out.println(service.path("hello").accept(MediaType.TEXT_XML) 
        .get(String.class)); 

      System.out.println(service.path("hello") 
        .accept(MediaType.TEXT_HTML).get(String.class)); 
      System.out.println(service.path("generic").path("get") 
        .accept(MediaType.TEXT_HTML).get(String.class)); 
      return "success"; 
     } catch (Exception e) { 
      System.out.println(e.toString()); 
      return e.toString(); 

     } 

    } 

    private static URI getBaseURI() { 
     return UriBuilder.fromUri("http://localhost:8080/RestWeb/webresources") 
       .build(); 
    } 



}

我的服务器端代码我用下面的包继承所需的类

com.sun.jersey.jersey- core-1.4.0.jar

jersey-core-1.7.jar

JSR311的API-1.1.1.jar

以下是在web服务类

@Path("/hello") 
public class Hello { 

    // This method is called if TEXT_PLAIN is request 
    @GET 
    @Produces(MediaType.TEXT_PLAIN) 
    public String sayPlainTextHello() { 
     return "Hello Jersey"; 
    } 

    // This method is called if XML is request 
    @GET 
    @Produces(MediaType.TEXT_XML) 
    public String sayXMLHello() { 
     return "<?xml version=\"1.0\"?>" + "<hello> Hello Jersey" + "</hello>"; 
    } 

    // This method is called if HTML is request 
    @GET 
    @Produces(MediaType.TEXT_HTML) 
    public String sayHtmlHello() { 
     return "<html> " + "<title>" + "Hello Jersey" + "</title>" 
       + "<body><h1>" + "Hello Jersey" + "</body></h1>" + "</html> "; 
    } 

    @GET 
    @Path("get") 
    @Produces(MediaType.TEXT_HTML) 
    public String getXml() { 

    return "xyz"; 
    } 
} 

@Path("generic") 
@WebService 
public class GenericResource { 

    @Context 
    private UriInfo context; 
    @Context 
    private HttpServletResponse response; 
    private String content = "content"; 

    /** 
    * Creates a new instance of GenericResource 
    */ 
    public GenericResource() { 
    } 

    /** 
    * Retrieves representation of an instance of 
    * com.mycompany.resource.GenericResource 
    * 
    * @return an instance of java.lang.String 
    */ 
    @GET 
    @Path("get") 
    @Produces(MediaType.TEXT_HTML) 
    public String getXml() { 
     System.out.println("\n\n\nGET\n\n\n"); 
     //response.addHeader(content, content); 
     return this.content+" from get method"; 

    } 

    /** 
    * PUT method for updating or creating an instance of GenericResource 
    * 
    * @param content representation for the resource 
    * @return an HTTP response with content of the updated or created resource. 
    */ 
    @PUT 
    @Path("put") 
    @Consumes("text/html,text/xml,text/plain") 
    public void putXml(@PathParam("content") String content) { 
     System.out.println("\n\n\nPUT\n\n\n"); 
     response.addHeader(content, content); 
     this.content = this.content + content; 
    } 

    @POST 
    @Path("post") 
    @Consumes("text/html,text/xml,text/plain") 
    public void postXml(@PathParam("content") String content) { 
     System.out.println("\n\n\nPOST\n\n\n"); 
     response.addHeader(content, content); 
     this.content = this.content + content; 
    } 
}

来源

2013-01-07 Parvathy

回答

0

我得到了解决方案 GWT不支持某些软件包。我发现GWT中的RequestBuilder类可以连接到REST Web服务， 我使用RequestBuilder类来连接REST Web服务。但是我没有从webservice得到任何东西，因为我的GWT和REST应用程序有不同的端口和域。它克服了在头

以下设置访问控制允许-渊源考是我的客户端代码（GWT）

public void onModuleLoad() { 
     RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, 
     "http://localhost:8080/RestWeb/webresources/generic/post/" 
     +"haiiiiiii"); 
     builder.setCallback(new RequestCallback() { 

     @Override 
     public void onResponseReceived(Request request, 
     Response response) { 

     Window.alert("onResponseReceived" 
     + response.getStatusCode() + response.getText()); 

     } 

     @Override 
     public void onError(Request request, Throwable exception) { 

     } 
     }); 
     builder.setHeader("Content-Type", "text/plain"); 
     builder.setHeader("Access-Control-Allow-Methods", 
     "PUT, GET, POST, DELETE, OPTIONS"); 
     builder.setHeader("Access-Control-Allow-Headers", 
     "Content-Type"); 
     builder.setHeader("Access-Control-Allow-Origin", 
     "http://127.0.0.1:8888"); 
     try { 
     builder.send(); 
     } catch (RequestException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
     } 
}

以下是我的服务器端代码

@Path("generic") 
@WebService 

public class GenericResource { 

    @Context 
    private UriInfo context; 
    @Context 
    private HttpServletResponse response; 
    private String content = "content"; 

    /** 
    * Creates a new instance of GenericResource 
    */ 
    public GenericResource() { 
    } 

    /** 
    * Retrieves representation of an instance of 
    * com.mycompany.resource.GenericResource 
    * 
    * @return an instance of java.lang.String 
    */ 
    @GET 
    @Path("get") 
    @Produces(MediaType.TEXT_HTML) 
    public String getXml() { 
     System.out.println("\n\n\nGET\n\n\n"); 
     //response.addHeader(content, content); 
     return this.content+" from get method"; 

    } 

    /** 
    * PUT method for updating or creating an instance of GenericResource 
    * 
    * @param content representation for the resource 
    * @return an HTTP response with content of the updated or created resource. 
    */ 
    @PUT 
    @Path("put") 
    @Consumes("text/html,text/xml,text/plain") 
    public void putXml(@PathParam("content") String content) { 
     System.out.println("\n\n\nPUT\n\n\n"); 
     response.addHeader(content, content); 
     this.content = this.content + content; 
    } 

    @POST 
    @Path("post") 
    @Consumes("text/html,text/xml,text/plain") 
    public void postXml(@PathParam("content") String content) { 
     System.out.println("\n\n\nPOST\n\n\n"); 
     response.addHeader(content, content); 
     this.content = this.content + content; 
    } 
} 

import java.io.IOException; 
import javax.servlet.FilterChain; 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import org.springframework.web.filter.OncePerRequestFilter; 

/** 
* 
* @author SPC 
*/ 
public class CorsFilter extends OncePerRequestFilter { 

    @Override 
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) 
      throws ServletException, IOException { 
     // if (request.getHeader("Access-Control-Request-Method") != null && "OPTIONS".equals(request.getMethod())) { 
      // CORS "pre-flight" request 
       response.addHeader("Content-Type", 
       "multipart/form-data,text/plain,text/html"); 
       response.addHeader("Connection", "keep-alive"); 
      response.addHeader("Access-Control-Allow-Origin", "http://127.0.0.1:8888"); 
      response.addHeader("Access-Control-Allow-Methods", "PUT, GET, POST, DELETE, OPTIONS"); 
      response.addHeader("Access-Control-Allow-Headers","origin, access-control-allow-methods, content-type, access-control-allow-origin, access-control-allow-headers"); 
      response.addHeader("Access-Control-Max-Age", "1800");//30 min 
     // } 
     filterChain.doFilter(request, response); 
    } 
}

来源

2013-01-15 13:24:52 Parvathy

0

这可能与通用路径的问题。

System.out.println(service.path("generic").path("get") 
        .accept(MediaType.TEXT_HTML).get(String.class));

你可以显示通用路径的Web服务的映射吗？

来源

2013-01-07 07:34:18 iMBMT

+0

号我访问使用此通用路径的简单Java应用程序可以使用相同的REST Web服务。 – Parvathy

0

你的PUT和POST方法应该带一个表示请求体的参数。相反，他们期望路径参数content。

@PUT 
@Consumes("text/html,text/xml,text/plain") 
public void putXml(@PathParam("content") String content)

来源

2013-01-07 17:13:57

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