ExtJs 实现动态加载grid完整示例
数据表的结构是：数据表table > 记录record > 字段
store的结构是: Ext.data.Store > Ext.data.Record>Ext.dataDataField
store 首先驱动 DataProxy 加载数据 ，DataProxy加载完成会驱动 DataReader时行解析，最终获得Record对象。
1.bean :
package com.leo.bean;
public class Person {
private String name;
private int age;
private String sex;
private String birthday;
public Person(String name, int age, String sex, String birthday) {
super();
this.name = name;
this.age = age;
this.sex = sex;
this.birthday = birthday;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getBirthday() {
return birthday;
}
public void setBirthday(String birthday) {
this.birthday = birthday;
}
}
2.action
package com.leo.action;
import java.util.ArrayList;
import java.util.List;
import com.leo.bean.Person;
import com.opensymphony.xwork2.ActionSupport;
public class ExtjsAction extends ActionSupport {
private long results;
private List items;
public long getResults() {
return results;
}
public void setResults(long results) {
this.results = results;
}
public List getItems() {
return items;
}
public void setItems(List items) {
this.items = items;
}
public String execute() throws Exception {
this.results = 3;
Person p1 = new Person("张三", 29, "男", "1990-10-22");
Person p2 = new Person("李四", 28, "男", "1991-03-30");
Person p3 = new Person("王五", 27, "女", "1993-08-17");
this.items = new ArrayList<Person>();
this.items.add(p1);
this.items.add(p2);
this.items.add(p3);
return SUCCESS;
}
}
3.struts-xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
"http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<include file="struts-default.xml" />
<package name="/json" namespace="/" extends="json-default">
<action name="extjsaction" class="com.leo.action.ExtjsAction">
<result type="json">
</result>
</action>
</package>
</struts>
4.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" 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">
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
</web-app>
5.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>ExtJs与Struts2结合</title>
<link rel="stylesheet" href="ext-3.1.1/resources/css/ext-all.css" type="text/css"></link>
<script type="text/javascript" src="ext-3.1.1/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="ext-3.1.1/ext-all.js"></script>
<script type="text/javascript">
Ext.onReady(function() {
var store = new Ext.data.JsonStore({
url:'json/extjsaction.action',//返回的是DataProxy对象
root:'items',
fields:['name','age','sex','birthday']
});
store.load();
var grid = new Ext.grid.GridPanel({
store:store,
viewConifg:{
forceFit:true
},
columns:[
{header:'姓名',dataIndex:'name'},
{header:'年龄',dataIndex:'age'},
{header:'性别',dataIndex:'sex'},
{header:'生日',dataIndex:'birthday'}
]
});
var win = new Ext.Window({
title:'store ',
width:600,
height:400,
layout:'fit',//这个是布局
items:grid
});
win.show();
});
</script>
</head>
<body>
</body>
</html>
图示：
