struts2.0 中的批量封装对象（Bean）

最新推荐文章于 2018-02-28 22:41:17 发布

原创最新推荐文章于 2018-02-28 22:41:17 发布 · 155 阅读

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CC 4.0 BY-SA版权

文章标签：

#Bean #JSP #Struts #HTML

本文介绍如何在Struts2.0中实现产品信息的批量增加与显示，包括实体Bean定义、Action类处理逻辑、JSP页面设计及OGNL表达式的使用。

本文是针对Struts2.0中的使用List进行批量封装而写的，用代码来诠释某些东东。因为刚开始学习struts2.0，以后会进行补充这方面只是的。需求是：我将产品信息批量增加，并显示结果：

1。建立实体bean :Product

package demo;

import java.util.Date;

public class Product {
private String name;
private double price;
private Date dateOfProduction ;

public Date getDateOfProduction(){
return dateOfProduction;
}
public void setDateOfProduction(Date dateOfProduction) {
this.dateOfProduction = 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;
}

}
2.控制业务逻辑的Action类： ProductConfirm

package demo;

import java.util.List;

import com.opensymphony.xwork2.ActionSupport;

public class ProductConfirm extends ActionSupport {
public List<Product> products;

public List<Product> getProducts() {
return products;
}

public void setProducts(List<Product> products) {

this.products = products;
}
public String execute(){

if(products!=null){
for(Product p : products){
   con.Convert(p.getName());
   System.out.println("p.name=="+p.getName()+" | "+ p.getPrice()+" | "+p.getDateOfProduction());
}
}else{
   System.out.println("product is null");
}
System.out.println();
System.out.println();
System.out.println();
return SUCCESS;
}
}
3.AddProducts.jsp 添加产品的页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <title> AddProducts.jsp </title>
</head>

<body>
<s:form action="ProductConfirm" theme="simple" >
    <table>
    <tr style="background-color:powderblue ;font-weight:bold;">
    <td>Product_Name</td>
     <td>Price</td>
      <td>Date</td>
    </tr>
    <%--
    <tr>
    <td>
    <input type="text" name="products[0].name" />
    </td>
    <td>
    <input type="text" name="products[0].price">
   </td>
    <td>
    <input name="products[0].dateOfProduction" type="text"/>
    </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/> </td>
    </tr>
    </table>

      </s:form>
    <br>
</body>
</html>

4. 展示添加产品的页面：ShowProducts.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <title> ShowProducts.jsp </title>
</head>

<body>
<table>
     <tr style="background-color:powderblue;font-weight:bold;">
    <td>Product_Name</td>
     <td>Price</td>
      <td>Date</td>
    </tr>
<s:iterator value="products" >
<tr>
   <td><s:property   value="name"/> </td>
   <td><s:property   value="price"/> </td>
   <td><s:property value="dateOfProduction" /> </td>
   </tr>
</s:iterator>
</table> <br>
</body>
</html>