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");
        }        
    }
}