struts1的一个简单登陆功能

Login.jsp:

   <form action="<%= request.getContextPath() %>/login.do" method="post">
         username:<input type="text" name="username" /><br>
         password:<input type="password" name="password" />
         <input type="submit" value="login" />
     </form>

web.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app version="2.5"
     xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
   <servlet>
   <!-- 这里的servlet-name和下面的servlet-name成对应关系 -->
       <servlet-name>action</servlet-name>
       <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
       <!-- 以下的读取参数,就是加载配置文件 -->
       <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>

   <!-- 所有的.do请求 进这里来,当有do请求过来的时候,根据servlet-name查找到相应的servlet. -->
   <servlet-mapping>
       <servlet-name>action</servlet-name>
       <url-pattern>*.do</url-pattern>
   </servlet-mapping>

 </web-app>

struts-config.xml

 <?xml version="1.0" encoding="ISO-8859-1" ?>

 <!DOCTYPE struts-config PUBLIC
           "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
           "http://struts.apache.org/dtds/struts-config_1_3.dtd">

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

LoginForm.java

 package cn.itcast;

 import org.apache.struts.action.ActionForm;

 public class LoginForm extends ActionForm {
     private String username=null;
     private 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;
     }

 }

LoginAction.java

 package cn.itcast;

 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.apache.struts.action.Action;
 import org.apache.struts.action.ActionForm;
 import org.apache.struts.action.ActionForward;
 import org.apache.struts.action.ActionMapping;

 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("itcast")&&loginForm.getPassword().equals("123456")){
             return mapping.findForward("loginSuccess");
         }else{
             return mapping.findForward("loginFailure");
         }
     }
 }