我的网络应用程序存在问题，我使用的是ActionForm，其中包含一些对象（包含获取和设置）。
public class MyForm extends ExtendForm {
private List<MyClass> listMyClass;
private MyClass detail;
...
// get and set are implemented
在特定的JSP中，我只需要查看＆＃34; detail＆＃34;的字段。对象（我在上一篇文章中对其进行了评价。）所以我实现了这样的页面：
<html:form action="/action.do?method=updateClass">
...
<td><html:text property="detail.id">${myForm.detail.id}</html:text></td>
....
<html:submit>OK</html:submit>
</html:form>
我可以在该文本框中看到detail.id的值，但是当我点击OK转到方法updateClass时，我看到了这个异常：
[28/07/17 14.41.43:528 CEST] 0000002d webapp E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Errore servlet]-[xxx]: java.lang.IllegalArgumentException: No bean specified
at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:874)
at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:933)
at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:830)
at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:433)
at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:473)
at org.apache.struts.chain.commands.servlet.PopulateActionForm.populate(PopulateActionForm.java:50)
at org.apache.struts.chain.commands.AbstractPopulateActionForm.execute(AbstractPopulateActionForm.java:60)
at org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
at org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:738)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1443)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:790)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:443)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:859)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1557)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:173)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:202)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:766)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:896)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1527)
在我的struts-config.xml中，我像这样写了我的表单bean
<form-beans>
<form-bean name="myForm" type="aaa.bbb.ccc.MyForm"/>
</form-beans>
但我无法解决此错误。我想我必须＆＃34;说＆＃34; Struts存在＆＃34;细节＆＃34;对象，但我无法理解。
有人能帮助我吗？