struts2中批量封装对象（Bean）
package product;import java.io.Serializable;import java.util.Date;/** * 产品持久化类 * @author lijunjie * */public class Product implements Serializable {private String name;private double price;private Date dateOfProduction;public String getName() {return name;}public void setName(String name) {this.name = name;}public double getPrice() {return price;}public void setPrice(double price) {this.price = price;}public Date getDateOfProduction() {return dateOfProduction;}public void setDateOfProduction(Date dateOfProduction) {this.dateOfProduction = dateOfProduction;}}
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第二步：然后，在同上的包下添加ProductConfirm.java类，代码如下
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package product;import java.util.List;import com.opensymphony.xwork2.ActionSupport;/** * 商品确认类 * @author lijunjie * */public class ProductConfirm extends ActionSupport {private List<Product> products;public List<Product> getProducts() {return products;}public void setProducts(List<Product> products) {this.products = products;}@Overridepublic String execute() throws Exception {for(Product p : products){System.out.println(p.getName()+"--"+p.getPrice()+"--"+p.getDateOfProduction());}return SUCCESS;}}?
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?第三步：再在struts.xml文件中配置ProductConfirm Action：
<package name="product" extends="struts-default"> <action name="ProductConfirm" name="code"><%@page contentType="text/html;charset=UTF-8" %><%@taglib prefix="s" uri="/struts-tags" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>Add Product</title> </head> <body> <s:form action="ProductConfirm" theme="simple"> <table><tr><td>商品名称</td><td>商品价格</td><td>生产日期</td></tr><s:iterator value="new int[3]" status="stat"><tr><td><s:textfield name="%{'products['+#stat.index+'].name'}"/></td><td><s:textfield name="%{'products['+#stat.index+'].price'}"/></td><td><s:textfield name="%{'products['+#stat.index+'].dateOfProduction'}"/></td></tr></s:iterator> <tr><td colspan="3"><s:submit value="提交"/></td></tr> </table> </s:form> </body></html>?
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第五步：在WebRoot下新建showproducts.jsp：
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<%@page contentType="text/html;charset=UTF-8" %><%@taglib prefix="s" uri="/struts-tags" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>显示商品</title> </head> <body> <table border="1"> <tr> <td>商品名称</td> <td>商品价格</td> <td>生产日期</td> </tr> <s:iterator value="products" status="stat"> <tr><td><s:property value="name"/></td><td>$<s:property value="price"/></td><td><s:property value="dateOfProduction"/></td> </tr> </s:iterator> </table> </body></html>
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运行结果如图：
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?在addproducts.jsp的<s:textfield>的name为“%{'products['+#stat.index+'].name'}”，%{exp}格式表示使用OGNL表达式，上述表达式的相当于<%= "products[" + stat.index + "].name" %>
如 url?student.name=张三&student.age=20&student.name=李四&student.age=20 ,
怎样封装成一个 List<Student> 对象?