使用Struts 2 建立向导应用(Wizard)

最新推荐文章于 2019-05-11 15:11:29 发布

struts2

最新推荐文章于 2019-05-11 15:11:29 发布

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分类专栏： Struts2 文章标签： wizard struts string file jsp action

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向导 Wizard指需要一系列选择的操作,每一个选择决定了后续的操作.

这里使用一个简单的向导的模型来说明如何使用Struts 2 建立此种类型的应用.

例如如下图所示:

流程图:

其中橙色部分表示了信息的内容

FirstName.jsp

LastName.jsp

ShowName.jsp

代码示例:

1. WizardAction

package net.dev.java.teamware;

import com.opensymphony.xwork2.ActionSupport;

/**

* Created by IntelliJ IDEA.

* User: mazhao

* Date: 2008-5-5

* Time: 21:10:44

* To change this template use File | Settings | File Templates.

public class WizardAction extends ActionSupport {

private String firstName;

private String lastName;

private String actionName;

public String getFirstName() {

return firstName;

}

public void setFirstName(String firstName) {

this.firstName = firstName;

}

public String getLastName() {

return lastName;

}

public void setLastName(String lastName) {

this.lastName = lastName;

}

public String getActionName() {

return actionName;

}

public void setActionName(String actionName) {

this.actionName = actionName;

}

/**

* FirstName -> LastName -> Show Name

* next submit

* FirstName <- LastName

* previous

* -> FirstName

* init

* @return

public String execute() {

if ("next".equals(actionName)) {

return "next";

} else if ("previous".equals(actionName)) {

return "previous";

} else if ("submit".equals(actionName)) {

return "submit";

} else {

return "init";

}

2. struts.xml 配置

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<result>/jsp/index.jsp</result>

</action>

<result name="input">/jsp/index.jsp</result>

<result>/jsp/helloWorld.jsp</result>

</action>

<action name="wizard" class="net.dev.java.teamware.WizardAction">

<result name="init">/jsp/FirstName.jsp</result>

<result name="next">/jsp/LastName.jsp</result>

<result name="previous">/jsp/FirstName.jsp</result>

<result name="submit">/jsp/ShowName.jsp</result>

</action>

</package>

</struts>

3. JSP代码

FirstName.jsp

<%--

Created by IntelliJ IDEA.

User: mazhao

Date: 2008-5-5

Time: 21:13:59

To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%@taglib prefix="s" uri="/struts-tags" %>

<html>

<head><title>Simple jsp page</title></head>

<body>

Enter your first name here!

<br/>

<s:form action="wizard" method="submit" >

<s:textfield name="firstName" label="First Name"/>

<s:submit label="Next" name="actionName" value="next"/>

</s:form>

</body>

</html>

LastName.jsp

<%--

Created by IntelliJ IDEA.

User: mazhao

Date: 2008-5-5

Time: 21:14:08

To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%@taglib prefix="s" uri="/struts-tags" %>

<html>

<head><title>Simple jsp page</title></head>

<body>

Enter your last name here!

<s:form action="wizard" method="post">

<s:textfield name="firstName" label="First Name"/>

<s:textfield name="lastName" label="Last Name"/>

<s:submit label="Submit" name="actionName" value="submit"/>

<s:submit label="Previous" name="actionName" value="previous"/>

</s:form>

</body>

</html>

ShowName.jsp

<%--

Created by IntelliJ IDEA.

User: mazhao

Date: 2008-5-5

Time: 21:14:15

To change this template use File | Settings | File Templates.

--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%@taglib prefix="s" uri="/struts-tags" %>

<html>

<head><title>Simple jsp page</title></head>

<body>

The Name is :<br/>

<s:property value="firstName"/>   <s:property value="lastName"/>

</body>

</html>