读取mysq数据库l数据，并使用dataview显示

时间：2023-03-09 15:23:39
读取mysq数据库l数据，并使用dataview显示

来自《sencha touch权威指南》，约198页开始

通过php脚本，可以将mysql数据库的数据作为json数据格式进行读取。

（1）php代码（bookinfo.php)：

<?php

$link = mysql_connect("localhost","root","123456");

mysql_select_db("jiyale");

mysql_query("SET NAMES UTF8");

$result = mysql_query('select * from books',$link);

if(!$result){

    die('{"success":false,"message":"读取数据失败"}');

}

if(mysql_num_rows($result)>0){

    while($obj = mysql_fetch_object($result)){

        $arr[] = $obj;

    }

    echo '{"success": true, "books": '.json_encode($arr).'}';

}else{

    echo '{"success": false,"message":"读取数据失败","books":""}';

}

?>

（2）app.js代码：

Ext.require(['Ext.data.Store','Ext.data.reader.Xml','Ext.dataview.DataView','Ext.MessageBox']);

Ext.application({

    name: 'MyApp',

    icon: 'images/icon.png',

    glossOnIcon: false,

    phoneStartupScreen: 'images/phone_startup.png',

    tabletStartupScreen: 'images/tablet_startup.png',

    launch: function(){

        Ext.define('BookInfo',{

            extend: 'Ext.data.Model',

            config: {

                fields:['image_url','book_name','author','description']

            }

        });

        var bookStore = Ext.create('Ext.data.Store',{

            model: 'BookInfo',

            autoLoad: true,

            proxy: {

                type: 'ajax',

                url: 'bookinfo.php',

                reader: {

                    type: 'json',

                    rootProperty: 'books'

                }

            },

            listeners: {

                load: function(store,records,successful){

                    if(!successful){

                        Ext.Msg.alert(bookStore.getProxy().getReader().rawData.message);

                    }

                }

            }

        });

        var bookTemplate = new Ext.XTemplate(

            '<tpl for=".">',

            '<div class="Book_img"><img src="{image_url}" /></div>',

            '<div class="Book_info">',

            '<h2>{book_name}</h2><br /><h3>作者：{author}</h3>',

            '<p>{description:ellipsis(50)}</p>',

            '</div>',

            '</tpl>'

        );

        var dataview = Ext.create('Ext.DataView',{

            store: bookStore,

            itemTpl: bookTemplate,

            baseCls: 'Book',

        });

        Ext.Viewport.add(dataview);

    }

});

（3）index.html代码：

<!DOCTYPE HTML>

<html>

<head>

<meta charset="utf-8">

<title>sencha touch</title>

<link rel="stylesheet" type="text/css" href="css/sencha-touch.css" />

<script type="text/javascript" src="sencha-touch-debug.js"></script>

<script type="text/javascript" src="app.js"></script>

<style type="text/css">

.Book-item{padding:10px 0 30px 178px;border-top: 1px solid #ccc;}

.Book-item h2{font-weight: bold;}

.Book-item .Book_img{position: absolute;left: 10px;}

.Book-item .Book_img img{max-width: 159px;}

.Book-itme .Book_info{position: absolute;padding-left: 5px;font-size: 12px;}

.x-item-selectex{background-color: blue;color: white;}

</style>

</head>

<body>

</body>

</html>

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