Struts2 OGNL的一个例子

目录结构：

下面直接给出源码：

ognl.jsp:

[html]

<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312" %>

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

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<head>

<title>OGNL示例</title>

</head>

<body>

<h3 align="left">Session和Request值</h3>

request.materialName: <s:property value="#request.materialName" /><br/>

session.materialName: <s:property value="#session.materialName" /><br/>

<h3 align="left">根据条件显示数据</h3>

<ul>

<s:iterator value="materials.{?#this.mainbid <50}">

<li><s:property value="materialName"/> 建材价格是 <s:property value="mainbid"/>元!</li>

</s:iterator>

</ul>

<p> "人造石台面" 的库存数量是: <s:property value="materials.{?#this.materialName=='人造石台面'}.{mount}[0]"/></p>

<h3 align="left">Map数据显示</h3>

<s:set name="frank" value="#{'material':'欧龙无苯油漆(六度)', 'mount':'500'}" />

<p>供销商frank手里还有建材: <s:property value="#frank['material']" /></p>

</body>

</html>

OgnlExampleAction.java:

[java]

package action;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpSession;

import model.Material;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class OgnlExampleAction extends ActionSupport {

//设置request、response参数和需要显示的数据集合定义

private HttpServletRequest request;

private HttpSession session;

private List<Material> materials;

public String execute() throws Exception {

request = ServletActionContext.getRequest();

session=request.getSession();

//设置request、session存放值

request.setAttribute("materialName","人造石台面 From request");

session.setAttribute("materialName","欧龙无苯油漆(六度) From session");

//初始化数据集合，集合类型为List

materials = new ArrayList<Material>();

materials .add(new Material("欧龙无苯油漆(六度)", 100, 2000));

materials .add(new Material("6*10mm门套线红影木夹板饰面(单面)", 20, 2900));

materials .add(new Material("人造石台面", 56, 800));

return SUCCESS;

}

public HttpServletRequest getRequest() {

return request;

}

public void setRequest(HttpServletRequest request) {

this.request = request;

}

public HttpSession getSession() {

return session;

}

public void setSession(HttpSession session) {

this.session = session;

}

public List<Material> getMaterials() {

return materials;

}

public void setMaterials(List<Material> materials) {

this.materials = materials;

}

Material.java:

[java]

package model;

//材料对象

public class Material {

//材料名

private String materialName;

//材料价格

private int mainbid;

//材料数量

private int mount;

//构造初始化数据

public Material(String materialName, int mainbid, int mount) {

super();

this.materialName = materialName;

this.mainbid = mainbid;

this.mount = mount;

}

public String getMaterialName() {

return materialName;

}

public void setMaterial

补充：Web开发 , Jsp ,

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