最后的目录结构：
addMaterial.jsp:
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<%@ page language="java" pageEncoding="gb2312"%> |
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
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<!-- struts2标签库调用声明 --> |
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<<a href="mailto:%@taglib">%@taglib</a> prefix="s" uri="/struts-tags"%> |
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<<a href="mailto:%@taglib">%@taglib</a> prefix="sx" uri="/struts-dojo-tags"%> |
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<html> |
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<head> |
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<title>添加材料</title> |
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<s:head /> |
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<sx:head /> |
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</head> |
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<body> |
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<s:fielderror/> |
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<h3align="left"> |
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Struts2类型转换使用范例 |
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</h3> |
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<!-- 材料输入表单 --> |
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<table> |
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<s:form id="materialForm" action="addMaterial" theme="simple"> |
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<table> |
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<tr> |
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<td>材料名</td> |
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<td>价格</td> |
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<td>库存量</td> |
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<td>过期日期</td> |
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</tr> |
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<s:iterator value="new int[4]" status="m"> |
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<tr> |
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<td><s:textfield name="%{'materialList['+#m.index+'].material'}" /></td> |
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<td><s:textfield name="%{'materialList['+#m.index+'].bid'}" /></td> |
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<td><s:textfield name="%{'materialList['+#m.index+'].mount'}" /></td> |
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<td><sx:datetimepicker name="%{'materialList['+#m.index+'].expireDate'}"/></td> |
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</tr> |
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</s:iterator> |
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<tr> |
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<td colspan="4"><s:submit value="提交"></s:submit> |
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</tr> |
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</table> |
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</s:form> |
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</table> |
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</body> |
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</html> |
注释：关于此段代码详细解释见 Struts2 <s:lterator>标签的一个复杂应用 解析。
最终提交的是一个名为materialList的集合实例，它有4个Material类型元素，每个元素都有material、bid、mount、expireDate这四个属性。
struts.xml:
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<?xml version="1.0" encoding="gb2312"?> |
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<!DOCTYPE struts PUBLIC |
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"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" |
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"http://struts.apache.org/dtds/struts-2.0.dtd"> |
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<struts> |
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<!-- Action所在包定义 --> |
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<package name="Convert" extends="struts-default"> |
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<action name="addMaterial" |
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class="com.action.AddMaterialAction"> |
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<result name="input">/jsp/addMaterial.jsp</result> |
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<result name="success">/jsp/showMaterial.jsp</result> |
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</action> |
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<action name="index"> |
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<result>/jsp/addMaterial.jsp</result> |
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</action> |
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</package> |
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</struts> |
注释：表单数据提交经struts.xml配置导航到action="addMaterial"的Action类AddMaterialAction去处理。
AddMaterialAction.java:
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package com.action; |
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import java.util.List; |
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import com.model.Material; |
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import com.opensymphony.xwork2.ActionSupport; |
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public class AddMaterialAction extends ActionSupport { |
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privateList<Material> materialList; |
08 |
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public String execute() throws Exception { |
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return SUCCESS; |
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} |
12 |
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public List<Material> getMaterialList() { |
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return materialList; |
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} |
16 |
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public void setMaterialList(List<Material> materialList) { |
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this.materialList = materialList; |
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} |
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} |
注释：在JSP页面按"提交"按钮后，就相当于"setMaterialList()"方法，实例化一个materialList集合实例。
AddMaterialAction-conversion.properties：
Element_materialList=com.model.Material注释：定义了List元素都是Material对象（由于定义时是用泛型List<Material>，此处是可缺省的）。
AddMaterialAction-validation:
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<?xml version="1.0" encoding="gb2312"?> |
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<!DOCTYPE validators PUBLIC |
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"-//OpenSymphony Group//XWork Validator 1.0.2//EN" |
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"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"> |
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<validators> |
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<field name="materialList"> |
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<field-validator type="visitor"> |
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<param name="context">materialContext</param> |
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<param name="appendPrefix">true</param> |
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<message>添加材料输入校验：</message> |
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</field-validator> |
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</field> |
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</validators> |
注释：这是Action类AddMaterialAction的校验配置文件，从命名就可看出来，它放在com.model目录下。其中的格式算是比较统一的，appendPrefix参数设置了true 即在出错信息前都加上message标签中的内容。context参数设置为"materialContext"，Material类校验文件名“-”之间的名字要与之对应,本例为Material-materialContext-validation.xml。
Material.java:
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package com.model; |
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import java.util.Date; |
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public class Material implements java.io.Serializable { |
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// Fields |
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private String material; |
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private double bid; |
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private int mount; |
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private Date expireDate; |
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|
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public Material() {} |
12 |
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public double getBid() { |
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return bid; |
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} |
16 |
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public void setBid(double bid) { |
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this.bid = bid; |
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} |
20 |
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public int getMount() { |
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return mount; |
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} |
24 |
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public void setMount(int mount) { |
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this.mount = mount; |
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} |
28 |
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public String getMaterial() { |
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return this.material; |
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} |
32 |
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public void setMaterial(String material) { |
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this.material = material; |
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} |
36 |
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public Date getExpireDate() { |
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return expireDate; |
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} |
40 |
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public void setExpireDate(Date expireDate) { |
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this.expireDate = expireDate; |
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} |
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} |
Material-materialContext-validation.xml:
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<?xml version="1.0" encoding="gb2312"?> |
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<!DOCTYPE validators PUBLIC |
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"-//OpenSymphony Group//XWork Validator 1.0.2//EN" |
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"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"> |
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<validators> |
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<field name="material"> |
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<field-validator type="requiredstring"> |
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<message>请输入材料名</message> |
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</field-validator> |
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</field> |
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<field name="bid"> |
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<field-validator type="double"> |
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<param name="minExclusive">0.1</param> |
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<message>请输入价格</message> |
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</field-validator> |
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</field> |
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<field name="mount"> |
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<field-validator type="int"> |
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<param name="min">1</param> |
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<message>请输入库存量</message> |
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</field-validator> |
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</field> |
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<field name="expireDate"> |
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<field-validator type="required"> |
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<message>请输入过期日期</message> |
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</field-validator> |
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<field-validator type="date"> |
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<param name="min">2009-01-01</param> |
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<param name="max">2019-01-01</param> |
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<message>输入过期日期无效</message> |
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</field-validator> |
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</field> |
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</validators> |
注释：这是对于Material这个Java对象的输入校验配置文件，它放在com.model目录下。
struts.properties：
struts.i18n.encoding=gb2312注释：使输入支持字符编码集GB2312。
showMaterial.jsp:
01 |
<%@ page language="java" pageEncoding="gb2312"%> |
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> |
03 |
<!-- struts2标签库调用声明 --> |
04 |
<%@taglib prefix="s" uri="/struts-tags"%> |
05 |
<html> |
06 |
<head> |
07 |
<title>添加材料</title> |
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<s:head /> |
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</head> |
10 |
<body> |
11 |
<!-- 材料数据显示 --> |
12 |
<table> |
13 |
<tr> |
14 |
<td>材料名</td> |
15 |
<td>价格</td> |
16 |
<td>库存量</td> |
17 |
<td>过期日期</td> |
18 |
</tr> |
19 |
<s:iterator value="materialList" status="m"> |
20 |
<tr> |
21 |
<td><s:property value="material" ></s:property></td> |
22 |
<td><s:property value="bid" ></s:property></td> |
23 |
<td><s:property value="mount" ></s:property></td> |
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<td><s:property value="expireDate" ></s:property></td> |
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</tr> |
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</s:iterator> |
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</table> |
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</body> |
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</html> |
注释：它完成提交的表单数据的显示。
地址栏运行 http://localhost:8080/Convert/jsp/addMaterial.jsp ，显示页面：
直接“提交”后，输出：
输入数据如下：
结果：
