分步收集，ActionForm的scope=session

最新推荐文章于 2014-08-07 12:04:12 发布

xxp3369

最新推荐文章于 2014-08-07 12:04:12 发布

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分类专栏：尚学堂strut1.* 文章标签： Struts Java Apache JSP Servlet

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本文介绍了一个使用Struts框架实现的分步表单应用案例，该案例通过多个Action类处理不同阶段的数据输入，并利用Struts配置文件定义了表单流转逻辑。

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StartAction.java

package com.bjsxt.struts;

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 StartAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		StepActionForm saf = (StepActionForm)form;
		saf.resetField();
		return mapping.findForward("success");
	}
}

Step1Action.java

package com.bjsxt.struts;

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 Step1Action extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		return mapping.findForward("success");
	}
}

Step2Action.java

package com.bjsxt.struts;

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 Step2Action extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		return mapping.findForward("success");
	}
}

Step3Action.java

package com.bjsxt.struts;

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 Step3Action extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		return mapping.findForward("success");
	}
}

FinishAction.java

package com.bjsxt.struts;

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 FinishAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		return mapping.findForward("success");
	}
}

StepActionForm.java

package com.bjsxt.struts;

import javax.servlet.http.HttpServletRequest;

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

public class StepActionForm extends ActionForm {


	private String name;

	private int[] productId;

	private String address;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int[] getProductId() {
		return productId;
	}

	public void setProductId(int[] productId) {
		this.productId = productId;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

//	public void reset(ActionMapping mapping, HttpServletRequest request) {
//		this.name = null;
//		this.productId = null;
//		this.address = null;
//	}

	public void resetField() {
		this.name = null;
		this.productId = null;
		this.address = null;
	}
}

struts-config.xml

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

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

<struts-config>

	<form-beans>
		<form-bean name="stepForm" type="com.bjsxt.struts.StepActionForm"/>
	</form-beans>

	<action-mappings>
		<action path="/start"
				type="com.bjsxt.struts.StartAction"
				name="stepForm"
				scope="session"
		>
			<forward name="success" path="/step1.jsp"/>
		</action>

		<action path="/step1"
				type="com.bjsxt.struts.Step1Action"
				name="stepForm"
				scope="session"
		>
			<forward name="success" path="/step2.jsp"/>
		</action>

		<action path="/step2"
				type="com.bjsxt.struts.Step2Action"
				name="stepForm"
				scope="session"
		>
			<forward name="success" path="/step3.jsp"/>
		</action>

		<action path="/step3"
				type="com.bjsxt.struts.Step3Action"
				name="stepForm"
				scope="session"
		>
			<forward name="success" path="/finish.jsp"/>
		</action>

		<action path="/finish"
				type="com.bjsxt.struts.FinishAction"
				name="stepForm"
				scope="session"
		>
			<forward name="success" path="/success.jsp"/>
		</action>

	</action-mappings>
</struts-config>

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
  </head>

  <body>
  	<h1>分步收集</h1>
  	<hr>
    <a href="start.do">分步收集</a>
  </body>
</html>

step1.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
<!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=GB18030">
<title>用户信息</title>
</head>
<body>
	<h1>用户信息</h1>
	<hr>
	<form action="step1.do" method="post">
		姓名：<input type="text" name="name"><br>
		<input type="submit" value="下一步">
	</form>
</body>
</html>

step2.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
<!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=GB18030">
<title>产品信息</title>
</head>
<body>
	<h1>产品信息</h1>
	<hr>
	<form action="step2.do" method="post">
		<input type="checkbox" name="productId" value="1">产品1<br>
		<input type="checkbox" name="productId" value="2">产品2<br>
		<input type="checkbox" name="productId" value="3">产品3<br>
		<input type="checkbox" name="productId" value="4">产品4<br>
		<input type="checkbox" name="productId" value="5">产品5<br>
		<input type="submit" value="下一步">
	</form>
</body>
</html>

step3.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
<!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=GB18030">
<title>地址信息</title>
</head>
<body>
	<h1>地址信息</h1>
	<hr>
	<form action="step3.do" method="post">
		地址：<input type="text" name="address"><br>
		<input type="submit" value="下一步">
	</form>
</body>
</html>

finish.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>    
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
<!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=GB18030">
<title>确认订单</title>
</head>
<body>
	<h1>确认订单</h1>
	<hr>
	<form action="finish.do" method="post">
		姓名：${stepForm.name }<br>
		产品：
		<c:forEach items="${stepForm.productId}" var="p" varStatus="vs">
			产品${p }
			<c:if test="${vs.count != fn:length(stepForm.productId)}" var="v">
				,
			</c:if>
		</c:forEach>

		<br>
		地址：${stepForm.address }<br>
		<input type="submit" value="确认">
	</form>
</body>
</html>

success.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
<!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=GB18030">
<title>Insert title here</title>
</head>
<body>
	购物成功！
</body>
</html>