extjs---extjs整合struts2

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EXTJS
ajax

从一看见extjs，我就喜欢上他的样子，于是，现在又上手做了，这次应该会更加深入的理解extjs吧。

extjs 整合 struts2:

要导入的包很重要，很多demo就是没有说清楚这个，导致无法安装他们的博文进行演示。

那么接下去，就简单了。

struts.xml的配置

<?xml version="1.0" encoding="UTF-8" ?>
<!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.enable.DynamicMethodInvocation"
		value="false" />
	<constant name="struts.devMode" value="false" />

	<package name="default" extends="json-default" namespace="/">
		<action name="gridUtil" class="org.lee.GridUtil">
			<result type="json" name="success"/>
		</action>
	</package>

	<!--
		<include file="example.xml"/>
		Add packages here -->

</struts>

page.jsp

<%@ page language="java" contentType="text/html; charset=GBK"

    pageEncoding="UTF-8"%> 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 

     <link rel="stylesheet" type="text/css" href="ext/resources/css/ext-all.css" /> 
     
     <script type="text/javascript" src="ext/adapter/ext/ext-base.js"></script> 
    <!-- ENDLIBS --> 
 
   <script type="text/javascript" src="ext/ext-all.js"></script> 
   <script type="text/javascript" src="js/paging.js"></script> 
<title>Struts2 Grid</title> 
</head> 
<body> 
    <div id="grid"></div> 
</body> 
</html>

page.jsp里面有自己写的paging.js文件

Ext.onReady(function(){ 
    var sm = new Ext.grid.CheckboxSelectionModel(); 
    
    var cm = new Ext.grid.ColumnModel([ 
        new Ext.grid.RowNumberer(), 
        sm, 
        {header:'编号',dataIndex:'id'}, 
        {header:'名称',dataIndex:'name'}, 
        {header:'年龄',dataIndex:'age'}, 
        {header:'描述',dataIndex:'descn'} 
    ]); 
    cm.defaultSortable = true; 
 
    var ds = new Ext.data.Store({ 
        proxy: new Ext.data.HttpProxy({url:'gridUtil.action',method:'POST'}), 
        reader: new Ext.data.JsonReader({ 
            totalProperty: 'totalProperty', 
            root: 'root' 
        }, [ 
            {name: 'id'}, 
            {name: 'name'}, 
            {name: 'descn'},{name:'age'} 
        ]) 
    }); 
    ds.load({params:{start:0,limit:10}}); 
    
    var grid = new Ext.grid.GridPanel({ 
        el: 'grid', 
        ds: ds, 
        cm: cm, 
        sm: sm, 
        title: 'struts2->JSON', 
        //height:400, 
        autoHeight: true, 
       bbar: new Ext.PagingToolbar({ 
            pageSize: 10, 
            store: ds, 
            displayInfo: true, 
            displayMsg: '显示第 {0} 条到 {1} 条记录，一共 {2} 条', 
            emptyMsg: "没有记录" 
        }), 
        tbar: new Ext.Toolbar({ 
            items:[ 
                    { 
                        id:'buttonA' 
                        ,text:"Button A" 
                        ,handler: function(){ alert("You clicked Button A"); } 
                    } 
                    , 
                    '-' 
                   // new Ext.Toolbar.SplitButton({}) 
                    ,{ 
                        id:'buttonB' 
                        ,text:"Button B" 
                        ,handler: function(){ alert("You clicked Button B"); } 
                    } 
                    , 
                    '-' 
                    ,{ 
                        id:'buttonc' 
                        ,text:"Button c" 
                    } 
                ] 
            })  
       /* tbar: new Ext.PagingToolbar({ 
            pageSize: 10, 
            store: ds, 
            displayInfo: true, 
            displayMsg: '显示第 {0} 条到 {1} 条记录，一共 {2} 条', 
            emptyMsg: "没有记录" 
        })*/ 
    }); 
    grid.render(); 
})

web.xml是最最基本的配置

<?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">

    <display-name>Struts Blank</display-name>

    <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>/*</url-pattern>
    </filter-mapping>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>

</web-app>

还有java的文件 GridUtil.java

package org.lee; 
 
import java.util.ArrayList; 
import java.util.List; 
 
 
import com.opensymphony.xwork2.Action; 
import com.opensymphony.xwork2.ActionSupport;
 
public class GridUtil extends ActionSupport{ 
 
    private int totalProperty = 100; 
    private List root; 
     
    public List getRoot() { 
        return root; 
    } 
    public void setRoot(List root) { 
        this.root = root; 
    } 
    public int getTotalProperty() { 
        return totalProperty; 
    } 
    public void setTotalProperty(int totalProperty) { 
        this.totalProperty = totalProperty; 
    } 
    public String execute(){ 
        
    	System.out.println("----->>");
    	
        root = new ArrayList(); 
        User user1 = new User(); 
        user1.setAge("20"); 
        user1.setDescn("descn1"); 
        user1.setId(1); 
        user1.setName("name1"); 
        root.add(user1); 
        User user2 = new User(); 
        user2.setAge("19"); 
        user2.setDescn("descn2"); 
        user2.setId(2); 
        user2.setName("name2"); 
        root.add(user2); 
        User user3 = new User(); 
        user3.setAge("14"); 
        user3.setDescn("descn3"); 
        user3.setId(3); 
        user3.setName("name3"); 
        root.add(user3); 
         
        return "success"; 
    } 
     
}

User.java

package org.lee; 
 
import java.util.List; 
 
public class User { 
 
    private int id; 
    private String name; 
    private String age; 
    private String descn; 
 
    public int getId() { 
        return id; 
    } 
    public void setId(int id) { 
        this.id = id; 
    } 
    public String getName() { 
        return name; 
    } 
    public void setName(String name) { 
        this.name = name; 
    } 
    public String getAge() { 
        return age; 
    } 
    public void setAge(String age) { 
        this.age = age; 
    } 
    public String getDescn() { 
        return descn; 
    } 
    public void setDescn(String descn) { 
        this.descn = descn; 
    } 
     
}

整个工程的样子，有错误是没有关系，不是发生在java code的地方