Struts2中对数字进行格式化，1、将数字用 ， 号分隔 2、将小数格式化为百分比
<!DOCTYPE struts PUBLIC
??????? "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
??????? "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.action.extension" value="do"/>
<constant name="struts.custom.i18n.resources" value="applicationResource"></constant>
<package name="lee" extends="struts-default">
?? <action name="NumberFormatTest_*" method="{1}">
??? <result name="test">/test_show.jsp</result>
?? </action>
</package>
</struts>
三、web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<welcome-file-list>
??? <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- Struts2.0 study -->
<!-- 定义Struts2的FilterDispathcer的Filter -->
??? <filter>
??????? <filter-name>struts2</filter-name>
??????? <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
??? </filter>
<!-- FilterDispatcher用来初始化struts2并且处理所有的WEB请求。 -->
??? <filter-mapping>
??????? <filter-name>struts2</filter-name>
??????? <url-pattern>/*</url-pattern>
??? </filter-mapping>
</web-app>
四、JavaBean: Product.java
package com.zzk.bean;
public class Product {
private String pname;
private Double price;
private Double discount; //折扣
public String getPname() {
?? return pname;
}
public void setPname(String pname) {
?? this.pname = pname;
}
public Double getPrice() {
?? return price;
}
public void setPrice(Double price) {
?? this.price = price;
}
public Double getDiscount() {
?? return discount;
}
public void setDiscount(Double discount) {
?? this.discount = discount;
}
}
五、Action:
package com.zzk.test;
import com.opensymphony.xwork2.ActionSupport;
import com.zzk.bean.Product;
public class NumberFormatTest extends ActionSupport {
private Product p;
public String init() {
?? p = new Product();
?? p.setPname("电脑");
?? p.setPrice(new Double(10000000000.45));
?? p.setDiscount(new Double(0.855678));
?? return "test";
}
public Product getP() {
?? return p;
}
public void setP(Product p) {
?? this.p = p;
}
}
五、JSP页面：
test.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
??? <a href="NumberFormatTest_init.do">Test</a>
</body>
</html>
?
test_show.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
??? <s:text name="format.number">
??? <s:param value="p.price"/>
??? </s:text>
??? <br>
??? <s:property value="p.pname"/>
??? <br>
??? 折扣：<s:text name="format.discount">
??? ?? <s:param value="p.discount"/>
??? </s:text>
</body>
</html>
六、显示结果：
10,000,000,000.45
电脑
折扣：85.5678%
?
其中：
格式百分比的格式可以由 # 号的个数去决定。
下面是从转的：
format.number ={0,number,#0.0##}
{ 参数序号（从0开始）,格式类形（number|date|time|choice）,格式样式(具体样式参见http://java.sun.com/docs/books/tutorial/i18n/format/decimalFormat.html)}
用 <s:date>标签....里面 FORMAT属性设定YYYY-MM-DD-hh-mm,年,月,日,小时,分.
这里讲个小技巧：把hh改成HH就是24小时制的,小写就是12小时制的
