struts初学者的问题
做一个struts的logindemo，代码如下；


LoginAction类
public class LoginAction extends Action {

@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

LoginForm loginForm = (LoginForm)form;

if(loginForm.getUsername().equals("shenlichao")){
return mapping.findForward("loginSuccess");
}else{
return mapping.findForward("loginFailure");
}
}



}




loginform类
public class LoginForm extends ActionForm {

public String username = null;
public String password = null;
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;
}



}


web.xml配置
<welcome-file-list>
  <welcome-file>Login.jsp</welcome-file>
  </welcome-file-list>
  
  <servlet>
  <servlet-name>action</servlet-name>
  <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
  <init-param>
  <param-name>config</param-name>
  <param-value>/WEB-INF/struts-config.xml</param-value>
  </init-param>
  <load-on-startup>0</load-on-startup>
  </servlet>
  
  <servlet-mapping>
  <servlet-name>action</servlet-name>
  <url-pattern>*.do</url-pattern>
  </servlet-mapping>


struts-config.xml配置
<struts-config>
  <form-beans>
  <form-bean name="loginFrom" type="demo.LoginForm"></form-bean>
  </form-beans>
   
  <action-mappings>
  <action path="/login" type="demo.LoginAction" name="loginForm">
  <forward name="loginSuccess" path="/LoginSuccess.jsp"></forward>
  <forward name="loginFailure" path="/LoginFailure.jsp"></forward>
  </action>
  </action-mappings>
   
</struts-config>





到了登陆界面之后输入shenlichao，输入用户名shenlichao点登陆，就出现HTTP Status 500错误，The server encountered an internal error () that prevented it from fulfilling this request.


不是很明白为什么 希望大家给点指导



------解决方案--------------------
你页面上的代码呢 看下页面上的代码有没有错 
public String username = null;
 public String password = null;
 这两个变量名 和你页面上的 是不是一致
------解决方案--------------------
+1

探讨

你页面上的代码呢 看下页面上的代码有没有错
public String username = null;
public String password = null;
这两个变量名 和你页面上的 是不是一致

------解决方案--------------------
<form-bean name="loginFrom" type="demo.LoginForm"></form-bean>
</form-beans>

<action-mappings>
<action path="/login" type="demo.LoginAction" name="loginForm">
名称写错了
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html