Struts的基础用法

web.xml文件

<?xml version="1.0" encoding="GBK"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>Struts2_Test</display-name>

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

struts.xml文件

<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">


<struts>

    <constant name="struts.custom.i18n.resources" value="mess"></constant>

    <constant name="struts.i18n.encoding" value="GBK"></constant>
    
    <package name="lee" extends="struts-default" namespace="/master">
        <action name="login" class="com.lee.action.LoginAction" method="execute">
        
            <result name="input">/login.jsp</result>
            <result name="success">/welcome.jsp</result>
            <result name="error">/error.jsp</result>
        
        </action>
    </package>

</struts>

<%@ page language="java" contentType="text/html; charset=GBK"
    pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
<title><s:text name="loginPage"></s:text></title>
</head>
<body>
    <s:form action="master/login">
        <s:textfield name="username" key="username"></s:textfield>
        <s:password name="password" key="password"></s:password>
        <s:submit key="login"></s:submit>
    </s:form>
</body>
</html>

LoginAction.java

package com.lee.action;

import java.util.Map;

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

import org.apache.struts2.ServletActionContext;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import org.apache.struts2.util.ServletContextAware;

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

public class LoginAction extends ActionSupport implements Action,
        ServletContextAware, ServletRequestAware, ServletResponseAware {

    private static final long serialVersionUID = 1L;

    private String username;

    private String password;

    private HttpServletResponse response;

    private HttpServletRequest request;

    public String execute() {

        if ("lee".equals(getUsername()) && "Lz123456".equals(getPassword())) {

            Map<String, Object> session = ActionContext.getContext()
                    .getSession();
            session.put("username", getUsername());
            
            request = ServletActionContext.getRequest();
            response = ServletActionContext.getResponse();
            
            
            return SUCCESS;
        }

        return ERROR;
    }

    /**
     * @return the username
     */
    public String getUsername() {
        return username;
    }

    /**
     * @param username
     *            the username to set
     */
    public void setUsername(String username) {
        this.username = username;
    }

    /**
     * @return the password
     */
    public String getPassword() {
        return password;
    }

    /**
     * @param password
     *            the password to set
     */
    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public void setServletResponse(HttpServletResponse response) {

        this.response = response;

    }

    @Override
    public void setServletRequest(HttpServletRequest request) {

        this.request = request;

    }

    @Override
    public void setServletContext(ServletContext servletContext) {

    }

}