客户端代码中有java.util.List时的Gin问题

时间：2011-06-22 12:04:47

标签： java gwt dependency-injection gin

我遇到了非常奇怪的问题，使用Gin注入器在客户端代码返回错误中使用以下堆栈跟踪：

ERROR: Deferred binding result type 'java.util.List' should not be abstract. 
ERROR: Uncaught exception escaped. java.lang.RuntimeException: Deferred binding failed for 'java.util.List' (did you forget to inherit a required module?)

是杜松子酒问题还是gwt？一般情况下，它可以在gwt？

的客户端使用java.util.list

以下是我如何使用它的示例。

public class DataSource
{

private final List<SearchDTO> users;
private List<String> header = new ArrayList<String>();

@Inject
public DataSource(List<SearchDTO> users)
{ 
  header.add("Name");
  header.add("Age");
  header.add("Address");
  this.users = users;
}

public List<SearchDTO> getUsers()
{
  return users;
}

public List<String> getTableHeader()
{
  return header;
}

然后我做构造函数注入然后得到这个异常。

这是完整的堆栈跟踪：

ERROR: Deferred binding result type 'java.util.List' should not be abstract. 
ERROR: Uncaught exception escaped. java.lang.RuntimeException: Deferred binding failed for 'java.util.List' (did you forget to inherit a required module?)
    at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:53)
    at com.google.gwt.core.client.GWT.create(GWT.java:98)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.create_Key$type$java$util$List$gmgsys$com$webcharge$client$model$SearchDTO$$_annotation$$none$$(MyGinjectorImpl.java:411)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.get_Key$type$java$util$List$gmgsys$com$webcharge$client$model$SearchDTO$$_annotation$$none$$(MyGinjectorImpl.java:425)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.create_Key$type$gmgsys$com$webcharge$client$DataSource$_annotation$$none$$(MyGinjectorImpl.java:211)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.get_Key$type$gmgsys$com$webcharge$client$DataSource$_annotation$$none$$(MyGinjectorImpl.java:222)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.getDataSource(MyGinjectorImpl.java:11)
    at gmgsys.com.webcharge.client.MyCellList$3.onSuccess(MyCellList.java:125)
    at gmgsys.com.webcharge.client.MyCellList$3.onSuccess(MyCellList.java:1)
    at net.customware.gwt.dispatch.client.DefaultDispatchAsync$1.onSuccess(DefaultDispatchAsync.java:33)
    at net.customware.gwt.dispatch.client.DefaultDispatchAsync$1.onSuccess(DefaultDispatchAsync.java:1)
    at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:232)
    at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)
    at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:167)
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:326)
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:207)
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:132)
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
    at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214)
    at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:167)
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:281)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:531)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352)
    at java.lang.Thread.run(Thread.java:662)
Caused by: com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    at com.google.gwt.dev.shell.ModuleSpace.rebindAndCreate(ModuleSpace.java:503)
    at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:49)
    at com.google.gwt.core.client.GWT.create(GWT.java:98)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.create_Key$type$java$util$List$gmgsys$com$webcharge$client$model$SearchDTO$$_annotation$$none$$(MyGinjectorImpl.java:411)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.get_Key$type$java$util$List$gmgsys$com$webcharge$client$model$SearchDTO$$_annotation$$none$$(MyGinjectorImpl.java:425)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.create_Key$type$gmgsys$com$webcharge$client$DataSource$_annotation$$none$$(MyGinjectorImpl.java:211)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.get_Key$type$gmgsys$com$webcharge$client$DataSource$_annotation$$none$$(MyGinjectorImpl.java:222)
    at gmgsys.com.webcharge.client.gin.MyGinjectorImpl.getDataSource(MyGinjectorImpl.java:11)
    at gmgsys.com.webcharge.client.MyCellList$3.onSuccess(MyCellList.java:125)
    at gmgsys.com.webcharge.client.MyCellList$3.onSuccess(MyCellList.java:1)
    at net.customware.gwt.dispatch.client.DefaultDispatchAsync$1.onSuccess(DefaultDispatchAsync.java:33)
    at net.customware.gwt.dispatch.client.DefaultDispatchAsync$1.onSuccess(DefaultDispatchAsync.java:1)
    at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:232)
    at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)
    at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:167)
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:326)
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:207)
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:132)
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
    at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214)
    at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:167)
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:281)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:531)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352)
    at java.lang.Thread.run(Thread.java:662)

感谢。

2 个答案:

答案 0 :(得分：2)

如何使用：
    @注入
    public DataSource（ArrayList users）{

}

<强>更新
是的，通常可以在GWT客户端使用java.util.List。
在我的项目中，我没有使用List作为接口，因为JSON序列化。我不尝试通过GIN注入它，这只是一个想法。
但现在我认为这不是一个好主意，因为这不是使用这种注射的方式。

你什么时候得到错误，编译？

答案 1 :(得分：2)

java.util.List是一个不是具体类的接口，因此GIN无法实例化它。这是错误的来源。

此外，GIN应该在哪里获得SearchDTO的列表？

你可以通过将它添加到你的GinModule来解决这个问题：

@Provides
List<SearchDTO> getSearchDTOList() {
    // do something to instantiate the list of SearchDTO..
    return listOfSearchDTO;
}
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