最近在搞物业小区管理系统，在做收费管理这个模块时，出现了一个错误，这个错误困扰了我整个上午，问题是这样的：
运行界面后就出现了这样的错误：
2014-07-08 14:08:53,817 WARN [org.apache.struts2.dispatcher.Dispatcher] - Could not find action or result
There is no Action mapped for action name undefined. - [unknown location]
at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:177)
at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:61)
at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)
at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:47)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:458)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.biyesheji.system.filter.PageFilter.doFilter(PageFilter.java:35)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)
我的JSP页面的表单是这样的：
<script type="text/javascript">
function checkDailyChargeData(){
var pats=/^\d+(\.\d+)?$/;
var fee=$("#totalFee").val();
if(pats.test(fee)){
if($("#cardId").val()==""||$("#residentsName").val()==""||$("#propertyAddress").val()==""||$("#chargeDate").val()==""||$("#chargePersonnel").val()==""){
alert("请填写完整数据！");
}else{
$.ajax({
cache: false,
type: "POST",
url:"addDailyCharge.action",
data:$('#dailyChargetData').serialize(),
async: false,
success: function(data) {
alert("提交成功！");
location.reload(true);
},
error: function(request) {
alert("提交失败,请重新填写！");
},
});
}
}else{
alert("总费用中请输入相应的数字！")
}
}
</script>
<form action="addDailyCharge.action" method="post" id="dailyChargetData">
<table class=gridView id=ctl00_ContentPlaceHolder2_GridView1 style="WIDth: 100%; BORDER-COLLAPSE: collapse" cellSpacing=0 rules=all border=1>
<tbody>
<tr>
<td class=gridViewheader scope=col colspan="6">日常收费表</td>
</tr>
<tr>
<td style="width:13%">户卡编号</td>
<td style="width:20%"><input type="text" id="cardId" name="dcmodel.cardId" maxlength="10" style="width:95%"></td>
<td style="width:13%">住户姓名</td>
<td style="width:20%">
<input type="text" id="residentsName" name="dcmodel.residentsName" style="width:95%">
</td>
<td style="width:13%">物业地址</td>
<td style="width:20%"><input type="text" id="propertyAddress" name="dcmodel.propertyAddress" style="width:95%"></td>
</tr>
<tr>
<td style="width:13%">收费日期</td>
<td style="width:20%" >
<input type="text" name="dcmodel.chargeDate" value="" style="width:80%" align="left" id="chargeDate" >
<img onclick="WdatePicker({el:'chargeDate'})" src="<%=request.getContextPath() %>/js/dp/skin/datePicker.gif" width="16" height="22" align="middle"/>
</td>
<td style="width:13%">收费员</td>
<td style="width:20%" >
<input type="text" id="chargePersonnel" name="dcmodel.chargePersonnel" style="width:95%">
</td>
<td style="width:13%">收费方式</td>
<td style="width:20%" >
<select id="chargeType" style="width:95%" name="dcmodel.chargeType">
<option value="1">现金支付</option>
<option value="2">银行卡支付</option>
</select>
</td>
</tr>
<tr>
<td style="width:13%">总费用</td>
<td style="width:20%">
<input type="text" id="totalFee" name="dcmodel.totalFee" style="width:95%">
</td>
<td >备注</td>
<td colspan="3"><input type="text" id="chargeRemark" name="dcmodel.chargeRemark" style="width:95%"></td>
</tr>
<tr>
<td class=gridViewheader scope=col colspan="6"><input type="button" onclick="checkDailyChargeData()" value="提交"> <input type="reset" value="重置"></td>
</tr>
</tbody>
</table>
</form>
我的action代码如下：
我的实体和模型代码：
都省略了set和get方法
我的struts-dailycharge.xml配置如下：
struts.xml配置如下：
出现这个错误后，我仔细对比了action的名字和XML文件中的路径，发现都没有问题。
于是我又清了清缓存，再一次运行界面，还是那个错误。
接着，我在网上查了查资料，发现造成这个错误的原因还有就是模型的属性和表单中的name不一样，我仔细对比了一下，发现模型的属性和form表单的name是相同的。
最后我发现实体中卡号Id我设置成主键，而且是自增长的，表单中根本就不用再填卡号。
解决方法：
将表单中的卡号去掉，不用填写。