Ajax-08 跨域获取最新电视节目清单实例

目标一

请求江西网络广播电视台电视节目

URL:http://www.jxntv.cn/data/jmd-jxtv2.html

 分析

1.从Http头信息分析得知,器服务端未返回响应头Access-Control-Allow-xxxx 相关信息,所以只能使用JSONP方式

2.从返回值内容中分析得知,其返回值永远是:list(响应内容),即:由于服务器将函数名写死为list,所以指定callback在此程序中无效。

list({
    data: [
        {
            "week": "周日",
            "list": [
                {
                    "time": "0030",
                    "name": "通宵剧场六集连播",
                    "link": "http://www.jxntv.cn/live/jxtv2.shtml"
                },
                {
                    "time": "2250",
                    "name": "都市晚剧场",
                    "link": "http://www.jxntv.cn/live/jxtv2.shtml"
                }
            ]
        }
        
    ]
});

实现

get_tv_list.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>跨域请求最新电视节目清单</title>
</head>
<body>

<h1>跨域请求</h1>
<input type="submit" value="XmlSendRequest获取节目" onclick="XmlSendRequest();"/>

<input type="submit" value="JqSendRequest-获取节目" onclick="JqSendRequest();"/>


<script type="text/javascript" src="http://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<script>
    function XmlSendRequest() {
        // 创建script标签
        var tag = document.createElement('script');
        // 指定src
        tag.src = "http://www.jxntv.cn/data/jmd-jxtv2.html";
        // 添加到head标签中
        document.head.appendChild(tag);
        // 删除script标签
        document.head.removeChild(tag);
    }

    function JqSendRequest() {
        $.ajax({
            url: "http://www.jxntv.cn/data/jmd-jxtv2.html",
            type: 'GET',
            dataType: 'jsonp'
        })
    }
function list(arg) { console.log(arg); } </script> </body> </html>

 

目标二

请求爱奇艺海贼王节目清单

URL:http://cache.video.iqiyi.com/jp/avlist/202861101/1/?callback=call

 分析

1.从Http头信息分析得知,器服务端未返回响应头Access-Control-Allow-xxxx 相关信息,所以只能使用JSONP方式

2.从返回值内容中分析得知,当传入callback时,返回callback回调函数名,所以指定callback在此程序中有效。

try{
    call({
        "bmsg": {
            "t": "20170412084110",
            "f": "kafka",
            "sp": "402871101,"
        },
        "code": "A00000",
        "data": {
            "pp": 75,
            "ps": "",
            "pt": 783,
            "vlist": [
                {
                    "mdown": 0,
                    "publishTime": 1438650931000,
                    "vpic": "http://pic9.qiyipic.com/image/20150803/96/f9/v_109343020_m_601.jpg",
                    "tvQipuId": 385274600,
                    "purType": 0,
                    "qiyiProduced": 0,
                    "shortTitle": "航海王 第1集",
                    "type": "1",
                    "vurl": "http://www.iqiyi.com/v_19rrok4nt0.html",
                    "plcdown": {
                        "17": 0,
                        "15": 0
                    },
                    "vid": "e59fa071d268247291f7737c72ea37f8",
                    "timeLength": 1500,
                    "pd": 1,
                    "vn": "航海王 第1集",
                    "payMark": 0,
                    "exclusive": 1,
                    "id": 385274600,
                    "vt": "我是路飞! 将要成为海贼王的男人",
                    "pds": "1"
                },
                {
                    "mdown": 0,
                    "publishTime": 1438678286000,
                    "vpic": "http://pic8.qiyipic.com/image/20150804/5f/27/v_109343021_m_601_m2.jpg",
                    "tvQipuId": 385275700,
                    "purType": 0,
                    "qiyiProduced": 0,
                    "shortTitle": "航海王 第2集",
                    "type": "1",
                    "vurl": "http://www.iqiyi.com/v_19rrok4ms8.html",
                    "plcdown": {
                        "17": 0,
                        "15": 0
                    },
                    "vid": "c183093e2c60e7a34eb6758c3f997a1e",
                    "timeLength": 1500,
                    "pd": 2,
                    "vn": "航海王 第2集",
                    "payMark": 0,
                    "exclusive": 1,
                    "id": 385275700,
                    "vt": "大剑客现身!海贼猎人罗罗诺亚·卓洛",
                    "pds": "2"
                }
            ],
            "bossType": "0",
            "aQipuId": 202861101,
            "qiyiProduced": 0,
            "allNum": 783,
            "pg": "1",
            "isBossMixer": 0,
            "ic": 783,
            "pgt": 11,
            "aid": 202861101,
            "pm": 0,
            "pn": 75,
            "cid": 4
        },
        "timestamp": "20170412084110"
    });
}catch(e){
    
};

实现

get_tv_list.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>跨域请求最新电视节目清单</title>
</head>
<body>

<h1>跨域请求最新电视节目清单</h1>
<input type="submit" value="XmlSendRequest-jsonp" onclick="XmlSendRequest();"/>

<input type="submit" value="JqSendRequest-jsonp" onclick="JqSendRequest();"/>

<script type="text/javascript" src="http://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
<script>
    // 客户端定义回调函数
    function call(arg) {
        console.log('客户端定义回调函数执行:', arg);
    }

    function XmlSendRequest() {
        // 创建script标签
        var tag = document.createElement('script');
        // 指定src
        tag.src = "http://cache.video.iqiyi.com/jp/avlist/202861101/1/?callback=call";
        // 添加到head标签中
        document.head.appendChild(tag);
        // 删除script标签
        document.head.removeChild(tag);
    }

    function JqSendRequest() {
        $.ajax({
            url: "http://cache.video.iqiyi.com/jp/avlist/202861101/1/",
            type: 'GET', // POST 也会自动转换为GET请求
            dataType: 'jsonp',
            jsonp: "callback",
            jsonpCallback: 'call', // 请求成功返回后,客户端执行call函数
            success: function (data, statusText, xmlHttpRequest) {
                // 未指定jsonCallback时,则自定执行方法
                console.log('success 回调执行:', data);
            }
            // 如上请求如 http://cache.video.iqiyi.com/jp/avlist/202861101/1/?callback=call
        })

    }
</script>
</body>
</html>

 


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posted @ 2017-04-10 10:00  鲨鱼逛大街  阅读(430)  评论(0编辑  收藏  举报