Struts2基于OGNL类型转换为Map、List时出错

Question

这是login.jsp的表单内容：
<form action="login.action" method="post">
<table align="center" width="360">
<caption><h3>直接封装成Map</h3></caption>
<tr>
<td>第一个用户名：<input type="text" name="users['one'].name"/></td>
</tr>
<tr>
<td>第一个密码：<input type="text" name="users['one'].pass"/></td>
</tr>
<tr>
<td>第二个用户名：<input type="text" name="users['two'].name"/></td>
</tr>
<tr>
<td>第二个密码：<input type="text" name="users['two'].pass"/></td>
</tr>
<tr align="center">
<td><input type="submit" value="转换"/>
<input type="reset" value="重填" /></td>
</tr>
</table>
</form>这是我的Action，里面Map<String,User> users是一个复合类型，而User只有name和pass两个属性。
public class LoginAction implements Action {
//Action类里包含一个Map类型的参数
//Map的value类型为User类型
private Map<String,User> users;
private String tip;

public Map<String, User> getUsers() {
return users;
} public void setUsers(Map<String, User> users) {
this.users = users;
} public String getTip() {
return tip;
} public void setTip(String tip) {
this.tip = tip;
} public String execute() throws Exception {
System.out.println(getUsers());
if(getUsers().get("one").getName().equals("scott") && getUsers().get("one").getPass().equals("tiger")){
setTip("转换成功");
return SUCCESS;
}else{
setTip("转换失败");
return ERROR;
}
}
}我弄了好久，就是不能转换，运行的时候提示如下错误：
2009-8-4 18:37:38 com.opensymphony.xwork2.util.logging.commons.CommonsLogger warn
警告: Could not find property [org.apache.catalina.jsp_file]
2009-8-4 18:37:42 com.opensymphony.xwork2.util.logging.commons.CommonsLogger warn
警告: Could not find property [struts.valueStack]
ognl.OgnlException: source is null for getProperty(null, "1")
at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1638)
at ognl.ASTProperty.getValueBody(ASTProperty.java:92)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.setValueBody(ASTChain.java:168)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:177)
at ognl.SimpleNode.setValue(SimpleNode.java:246)
at ognl.Ognl.setValue(Ognl.java:476)
at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:192)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:155)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:143)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:273)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:187)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:148)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:93)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:128)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:104)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:148)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:128)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
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:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
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:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
expr: users[1].name val: [Ljava.lang.String;@14beb40 context: ognl.OgnlContext@63a901f3 root:[com.opensymphony.xwork2.ActionSupport@141bf9f, com.opensymphony.xwork2.DefaultTextProvider@18b678c] value: [Ljava.lang.String;@14beb40
         。

在Struts中，怎么将请求参数转换成复合类型，比如Map、List等？？？谢谢

Answer 1

在log4j.rootLogger = *** 下面加上下面的一句即可 log4j.logger.com.opensymphony.xwork2.ognl.OgnlValueStack = ERROR

Answer 2

我的项目里面都没有log4j呢？？？我是想在Struts2中将请求参数直接生成一个符合类型，比如Map。。

Answer 3

把struts.xml贴出来看看还有类型转换配置文件及类型转换类

Answer 4

没有找到成员中的键值。
你调试一下，看一下getUsers得到在值键和值是否都是对的。这里报键为空。
估计你在jsp页面中的name不能这样users['two']写。

Answer 5

LoginAction: 
Map<String,User> users=new HashMap<String,User>;
没对象怎么接收