求高手指导。登录界面用户名传不进值，shruts2

毛驴锅锅 2014-08-02 10:35:30

我在界面输入的是 用户名：sss 密码：ddd 然后后台打印出来了 username:null dddd 。。。为啥用户名没有传进去

2014-8-2 10:30:16 org.apache.struts2.dispatcher.Dispatcher error
严重: Exception occurred during processing request: csu.soft.boss.vo.UsersVo cannot be cast to csu.soft.boss.vo.EnlistVo
java.lang.ClassCastException: csu.soft.boss.vo.UsersVo cannot be cast to csu.soft.boss.vo.EnlistVo
at csu.soft.boss.action.EnlistAction.adminlogin(EnlistAction.java:29)
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.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:562)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
at csu.soft.boss.utils.MyStrusFilter.doFilter(MyStrusFilter.java:22)
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.Http11AprProcessor.process(Http11AprProcessor.java:859)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
at java.lang.Thread.run(Thread.java:619)



这里是action：
package csu.soft.boss.action;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

import csu.soft.boss.dao.impl.EnlistDAO;
import csu.soft.boss.utils.DBUtil;
import csu.soft.boss.vo.ArticleVo;
import csu.soft.boss.vo.EnlistVo;

public class EnlistAction extends ActionSupport{

private String userName;
private String password;
private String roleId;
private EnlistDAO usersDao=new EnlistDAO();
private EnlistVo usersVo=new EnlistVo();
private Object[] obj;
private String loginResult;
public String adminlogin()
{
System.out.println("username:"+userName+" "+password+" ");
obj=usersDao.UsersLogin(userName, password);
usersVo=(EnlistVo) obj[0];
loginResult=(String) obj[1];
System.out.println("loginResult:"+loginResult);
System.out.println("userid:"+usersVo.getId()+" "+usersVo.getUserName()+" "+usersVo.getPassword()+" ");
if(loginResult.equals("登陆成功"))
{
ActionContext actionContext = ActionContext.getContext();
Map session = actionContext.getSession();
session.put("users", usersVo);
session.put("userName", userName);
session.put("loginResult", loginResult);
return "loginSuccess";
}else
{
return "loginError";
}
}

public String getUserName() {
return userName;
}

public void setUserName(String userName) {
this.userName = userName;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public String getRoleId() {
return roleId;
}

public void setRoleId(String roleId) {
this.roleId = roleId;
}


public String getLoginResult() {
return loginResult;
}

public void setLoginResult(String loginResult) {
this.loginResult = loginResult;
}

}


jsp界面：

<form action="EnlistAction!adminlogin" method="post">
用户名: <input type="text" name="username" > <br>
密 码： <input type="password" name="password">
<input value="提交" type="submit">
</form>
...全文
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毛驴锅锅 2014-08-02
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用户名那个null原来是自己粗心，name的n应该是N。。求高手指导报错是啥情况啊
zy_think123 2014-08-02
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又来晚了
枫醉秋 2014-08-02
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引用 8 楼 u014458058 的回复:
[quote=引用 6 楼 huxiweng 的回复:] public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } 这两处都要改
这里改是什么原因啊[/quote] 这处属性的名字要和画面上的一致
毛驴锅锅 2014-08-02
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引用 6 楼 huxiweng 的回复:
public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } 这两处都要改
这里改是什么原因啊
毛驴锅锅 2014-08-02
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引用 4 楼 scqlmm 的回复:
java.lang.ClassCastException: csu.soft.boss.vo.UsersVo cannot be cast to csu.soft.boss.vo.EnlistVo 这有一处，类型转换失败
楼上的太给力，就是这里。当时直接将Users改成Enlist里面一些参数没动，才导致的。感谢，感谢
teemai 2014-08-02
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public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } 这两处都要改
枫醉秋 2014-08-02
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java.lang.ClassCastException: csu.soft.boss.vo.UsersVo cannot be cast to csu.soft.boss.vo.EnlistVo 这有一处，类型转换失败
毛驴锅锅 2014-08-02
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引用 2 楼 scqlmm 的回复:
username---->userName
这里我已经改过来了。系统报的错误不在这。。
枫醉秋 2014-08-02
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username---->userName
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