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struts入门例子

2012-12-01 21:17 253 查看

具体步骤：

1、导入jar包

本例子基于一个基本的登录功能，只用到commons-beanutils.jar、commons-digester.jar、commons-logging.jar、struts.jar这四个jar包。

2、修改web.xml文件

在该文件增加<servlet><servlet/>和<servlet-mapping><servlet-mapping/>节点

3、创建和配置struts-config.xml

该文件和web.xml放在同一目录。

4、编写实现类和jsp页面

具体代码如下：

web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee  http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Struts1</display-name>
   <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>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
</web-app>

LoginFormLoginFormLoginForm类：用于封装页面输入的表单信息

package form;

import javax.servlet.http.HttpServletRequest;

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

public class LoginForm extends ActionForm {

	private String userId;
	private String userName;
	private String userPwd;
	
	//恢复属性的初始状态
	public void reset(ActionMapping mapping, HttpServletRequest request) {
		this.userId = null;
		this.userName = null;
		this.userPwd = null;
	}
	public String getUserId() {
		return userId;
	}
	public void setUserId(String userId) {
		this.userId = userId;
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getUserPwd() {
		return userPwd;
	}
	public void setUserPwd(String userPwd) {
		this.userPwd = userPwd;
	}
}

LoginActionLoginActionLoginAction类：继承自org.apache.struts.action

package action;

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;

import form.LoginForm;

public class LoginAction extends Action {
	
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		LoginForm loginForm = (LoginForm)form;
		if(!loginForm.getUserName().equals("") && loginForm.getUserName().equals(loginForm.getUserPwd())){
			request.getSession().setAttribute("userName", loginForm.getUserName());
			return mapping.findForward("index");
		}
		return mapping.findForward("login");
	}
}

struts-config.xml文件

<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
          "http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
	<form-beans>
		<form-bean name="loginForm" type="form.LoginForm"></form-bean>
	</form-beans>
	<action-mappings>
		<action path="/login" name="loginForm" type="action.LoginAction">
			<forward name="index" path="/index.jsp" redirect="true"></forward>
			<forward name="login" path="/login.jsp"></forward>
		</action>
	</action-mappings>
</struts-config>

登录页面 login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>登录页面</title>
</head>
<body>
	<form action="/Lesson11_Struts1Base/login.do" method="post">
		用户名：<input type="text" name="userName"><br>
		密码：<input type="password" name="userPwd"><br>
		<input type="submit" value="提交">
	</form>
</body>
</html>

首页index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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=UTF-8">
<title>首页</title>
</head>
<body>
	欢迎你，${userName }
</body>
</html>

到此，一个struts例子基本完成。

更多资源：http://www.cnblogs.cn/jdbc/archive/2012/08/08/JA.html

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