ExtJs 实现动态加载grid完整示例

2019-11-20 22:00:28

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Ext3.3完整包

Ext3.3中文文档

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 :

复制代码代码如下:

 
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

复制代码代码如下:

 
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

复制代码代码如下:

 
<?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

复制代码代码如下:

 
<?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

复制代码代码如下:

 
<%@ 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> 