我的Web应用程序项目有RPC调用。
一个RPC异步工作正常。但是另一个给出了错误
Mar 21, 2012 1:34:51 PM com.google.appengine.tools.development.ApiProxyLocalImpl log
SEVERE: javax.servlet.ServletContext log: ObjectStore: An IncompatibleRemoteServiceException was thrown while processing this call.
com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: This application is out of date, please click the refresh button on your browser. ( Blocked attempt to access interface 'com.client.RepositoryInterface', which is not implemented by 'com.server.ObjectStore'; this is either misconfiguration or a hack attempt )
at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:252)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:206)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
使用RPC
public interface ConnectionInterface extends RemoteService{
String connection(String[] authentication);
}
public interface ConnectionInterfaceAsync {
void connection(String[] authentication, AsyncCallback<String> callback);
}
公共类ConnectionService实现ConnectionInterfaceAsync {
ConnectionInterfaceAsync service = (ConnectionInterfaceAsync)GWT.create(ConnectionInterface.class);
ServiceDefTarget endpoint = (ServiceDefTarget) service;
public ConnectionService() {
endpoint.setServiceEntryPoint(GWT.getModuleBaseURL() + "rpc");
}
public void connectionCMIS(String[] authentication,
AsyncCallback<String> callbackConnection) {
service.connectionCMIS(authentication, callbackConnection);
}
//客户端致电
public class Login extends Composite {
private ConnectionService connectionService = new ConnectionService();
// more code
public void onClick(ClickEvent event) {
AsyncCallback<String> callbackConnection = new AsyncCallback<String>() {
public void onSuccess(String result) {
// print Succuss
}
}
connectionService.connection(authentication, callbackConnection );
}
}
}
不是Workink RPC
public interface RepositoryInterface extends RemoteService {
public FolderCollection getRepositories();
}
public interface RepositoryInterfaceAsync {
void getRepositories(AsyncCallback<FolderCollection> repositoryCallback);
}
public class RepositoryService implements RepositoryInterfaceAsync{
RepositoryInterfaceAsync async = (RepositoryInterfaceAsync)GWT.create(RepositoryInterface.class);
ServiceDefTarget endpoint = (ServiceDefTarget) async;
public CmisRepositoryService() {
endpoint.setServiceEntryPoint(GWT.getModuleBaseURL() + "repository");
}
public void getRepositories(
AsyncCallback<FolderCollection> repositoryCallback) {
async.getRepositories(repositoryCallback);
}
}
客户电话
public class Workplace {
private RepositoryService service = new RepositoryService();
// some more code
void doRepo(){
AsyncCallback<FolderCollection> repositoryCallback = new AsyncCallback<FolderCollection>() {
public void onSuccess(FolderCollection result) {
}
public void onFailure(Throwable caught) {
}
};
service.getRepositories(repositoryCallback);
}
}
XML代码
<servlet>
<servlet-name>ConnectionServlet</servlet-name>
<servlet-class>com.server.ConnectionServiceImpl</servlet-class>
</servlet>
<servlet>
<servlet-name>ObjectStore</servlet-name>
<servlet-class>com.server.ObjectStore</servlet-class>
<servlet-mapping>
<servlet-name>ConnectionServlet</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ObjectStore</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
两个RPC都是以类似的模式设计的,但它仍然给我一个错误。
如果有人能告诉我为什么会有很好的帮助
感谢。
答案 0 :(得分:2)
您的URL映射已关闭,您需要将RPC RemoteServiceServlet映射到更好的url-pattern
。您将两个servlet映射到/*
。当两个或多个映射到完全相同的url-pattern
时,无法保证执行哪个Servlet。所以我的猜测是,每次执行不工作的服务时,呼叫都会映射到其他服务。
解决这个问题的方法是使用像
这样的web.xml<servlet-mapping>
<servlet-name>ConnectionServlet</servlet-name>
<url-pattern>/ConnectionService.rpc</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>ObjectStore</servlet-name>
<url-pattern>/ObjectStoreService.rpc</url-pattern>
</servlet-mapping>
当然,您还必须更改客户端服务以使用正确的serviceEntryPoint
,所以
endpoint.setServiceEntryPoint(GWT.getModuleBaseURL() + "rpc");
必须改为
endpoint.setServiceEntryPoint(GWT.getHostPageBaseURL() + "ConnectionService.rpc");
找到合适的servlet。
编辑:更改错误:
错误强>
@ftr `com.google.appengine.tools.development.ApiProxyLocalImpl log
SEVERE: javax.servlet.ServletContext log: ConnectionServlet: An IncompatibleRemoteServiceException was thrown while processing this call.
com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: This application is out of date, please click the refresh button on your browser. ( Blocked attempt to access interface 'com.client.RepositoryInterface', which is not implemented by 'com.server.ConnectionServiceImpl'; this is either misconfiguration or a hack attempt )
at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:252)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:206)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
因此,如果你仔细观察,错误是不同的:
阻止尝试访问'com.client.RepositoryInterface'接口,该接口未由'com.server.ConnectionServiceImplObjectStore'实现
而不是
阻止尝试访问“com.client.RepositoryInterface”接口,该接口未由'com.server.ObjectStore'实现
这意味着您的配置仍然存在错误,您必须将客户端RepositoryInterfaceAsync
指向实施RemoteServiceServlet
的{{1}}。
答案 1 :(得分:0)
可能是您的web容器上的gwt-servlet.jar版本配置错误。请检查您的开发gwt-servlet.jar版本和Web容器gwt-servlet.jar版本。 n供参考 Misconfiguration or hack attempt