我使用Struts 2，Struts 2 JSON插件和Spring（用于依赖注入）编写Web应用程序。
我的问题是我想称之为Struts Action
@Action(value = "preview", results = {
@Result(name = "success", type = "json", params = { "root", "emailPreviewBean" }),
@Result(name = "login", location = "/WEB-INF/content/index.jsp") })
public String preview() {
emailPreviewBean.setPreviewContent();
return SUCCESS;
}
通过AJAX
function getCurrentPreview() {
$.ajax({
type : 'POST',
url : 'preview.action',
data : {},
success : function(result) {
$('#previewMessage').val(result.previewMessage);
$('#previewMessage2').val(result.previewMessage2);
$('#previewSubject').val(result.emailBean.subject);
$('#previewSubject2').val(result.emailBean.subject2);
},
});
}
但我收到此错误消息而不是正确的JSON：
<h2>HTTP ERROR 500</h2>
<p>Problem accessing /ZertV/preview.action. Reason:
<pre> org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: java.lang.reflect.InvocationTargetException</pre>
</p>
Caused by:
org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: java.lang.reflect.InvocationTargetException
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:269)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.write(JSONWriter.java:110)
at org.apache.struts2.json.JSONUtil.serialize(JSONUtil.java:194)
at org.apache.struts2.json.JSONResult.createJSONString(JSONResult.java:222)
at org.apache.struts2.json.JSONResult.execute(JSONResult.java:196)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:366)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:270)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:252)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:260)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:69)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:188)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:120)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:244)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:99)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:139)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:155)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:174)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:130)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at de.dataport.ls53.zertv.misc.LoginInterceptor.intercept(LoginInterceptor.java:28)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:556)
at org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:113)
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:440)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
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$RequestHandler.headerComplete(HttpConnection.java:926)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: java.lang.reflect.InvocationTargetException
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:269)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
... 76 more
Caused by: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: org.apache.struts2.json.JSONException: java.lang.reflect.InvocationTargetException
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:269)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
... 81 more
...
....
.....
<h3>Caused by:</h3>
<pre>java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:249)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.write(JSONWriter.java:110)
at org.apache.struts2.json.JSONUtil.serialize(JSONUtil.java:194)
at org.apache.struts2.json.JSONResult.createJSONString(JSONResult.java:222)
at org.apache.struts2.json.JSONResult.execute(JSONResult.java:196)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:366)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:270)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:252)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:260)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:69)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:188)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:120)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:244)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:99)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:139)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:155)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:174)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:130)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at de.dataport.ls53.zertv.misc.LoginInterceptor.intercept(LoginInterceptor.java:28)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:556)
at org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:113)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:440)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.io.FileNotFoundException: D:\ZertV\build\tmp\jettyRunWar\webapp (Zugriff verweigert)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at org.mortbay.resource.FileResource.getInputStream(FileResource.java:275)
... 111 more
</pre>
<h3>Caused by:</h3>
<pre>java.io.FileNotFoundException: D:\ZertV\build\tmp\jettyRunWar\webapp (Zugriff verweigert)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at org.mortbay.resource.FileResource.getInputStream(FileResource.java:275)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:249)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.add(JSONWriter.java:428)
at org.apache.struts2.json.JSONWriter.bean(JSONWriter.java:254)
at org.apache.struts2.json.JSONWriter.processCustom(JSONWriter.java:197)
at org.apache.struts2.json.JSONWriter.process(JSONWriter.java:182)
at org.apache.struts2.json.JSONWriter.value(JSONWriter.java:143)
at org.apache.struts2.json.JSONWriter.write(JSONWriter.java:110)
at org.apache.struts2.json.JSONUtil.serialize(JSONUtil.java:194)
at org.apache.struts2.json.JSONResult.createJSONString(JSONResult.java:222)
at org.apache.struts2.json.JSONResult.execute(JSONResult.java:196)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:366)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:270)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:252)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:260)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:69)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:133)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:188)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:120)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:244)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:99)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:139)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:155)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:174)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:97)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:130)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at de.dataport.ls53.zertv.misc.LoginInterceptor.intercept(LoginInterceptor.java:28)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:240)
at org.apache.struts2.factory.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:556)
at org.apache.struts2.dispatcher.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:113)
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:440)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
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$RequestHandler.headerComplete(HttpConnection.java:926)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
这是我ApplicationContext的{{1}}：
emailPreviewBean答案 0 :(得分：0)
实际上，Struts-JSON-Plugin遍历所有提供的对象的getter来创建响应。您提供的对象是请求范围的Spring bean！这样的对象在运行时有其他Spring提供的getter，你看不到！一些如何从这样复杂的对象创建json不是一个好习惯！
Struts-JSON-Plugin不能也不保证在调用提供的对象的getter时不会发生异常。所以只需使用一个更简单的对象来创建json。我指的是一个完全具有所需数据的对象，而不是更少，而不是更多。
另一种解决方案是从对象中解包Spring代理，然后将其用作Struts-JSON-Plugin的root