TP3.2.3和jQuery跨域请求源码。。。

来源：互联网发布：淘宝企业账号注册流程编辑：程序博客网时间：2024/06/06 00:50

跨域请求的原理大家都知道，本人也就不赘述了，数据传输的格式大概有XML和json等几种格式，但是相对与XML的格式来讲，他更加适用于大型数据的传输，所以本人选择使用json，来作为数据传输的格式。废话不多说，直接贴代码。。。

$url = "http://".$name."/data/text.php?callback=jQuery21405316117645496153_1494989206668&ca=archivesDomain&_=1494989206669&number=".$num;$resd = json_decode(curl_get($url));

/*    * url:访问路径*/function curl_get($url){    $testurl = $url;    $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $testurl);    //参数为1表示传输数据，为0表示直接输出显示。    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    //参数为0表示不带头文件，为1表示带头文件    curl_setopt($ch, CURLOPT_HEADER,0);    $output = curl_exec($ch);    curl_close($ch);    return $output;}

上面是PHP的跨域访问请求，使用的是curl模拟get请求，，，

$(".column").click(function () {    $(".column").removeAttr("style");    $(this).attr("style", "background-color: red");    var ca = "column";    var doamin = $(this).html();    $.ajax({        async: false,        url: 'http://' + doamin + '/data/text.php',  // 跨域URL        type: 'get',        dataType: 'jsonp',        jsonp: 'callback', //默认callback        data: {"ca": ca},        success: function (json) { //客户端jquery预先定义好的callback函数，成功获取跨域服务器上的json数据后，会动态执行这个callback函数            if (json.msg == "ok") {                var str = "";                for (var i = 0; i < json.info.length; i++) {                    str += "<tr>";                    str += "<td><span class='getMore' son='" + json.info[i].id + "' cid='" + doamin + "'>+</span><a>";                    if (json.info[i].ishidden == 1) {                        str += "<font color='red'>[隐]</font>";                    }                    str += "<span class='articles' tid='" + json.info[i].id + "' eid='" + doamin + "'>" + json.info[i].typename + "</span></a>[ID:" + json.info[i].id + "]";                    if (json.info[i].ispart == 0) {                        str += "(文档：" + json.info[i].count + ")";                    }                    str += "</td>";                    str += "<td>";                    str += "<a><i class='fa fa-pencil-square-o'></i></a>&nbsp;&nbsp;&nbsp;";                    str += "<a><i class='fa fa-trash-o delete' deid='"+json.info[i].id+"' doid='"+doamin+"'></i></a>";                    str += "</td>";                    str += "</tr>";                }                $("tbody").html(str);            }        }    });});

这边是jQuery的，JSONP的运行原理不清楚的可以自己百度一下，本人在这里就不赘述了。。。

以为我这边封装的东西不能用函数的形式，所以只好用判断的方式来返回数据。。。

$link = mysqli_connect(    $cfg_dbhost,  /* The host to connect to 连接MySQL地址 */    $cfg_dbuser,      /* The user to connect as 连接MySQL用户名 */    $cfg_dbpwd,  /* The password to use 连接MySQL密码 */    $cfg_dbname);    /* The default database to query 连接数据库名称*/if (!$link) {    printf("Can't connect to MySQL Server. Errorcode: %s ", mysqli_connect_error());    exit;}$ca = $_GET["ca"];$callback = isset($_GET['callback']) ? trim($_GET['callback']) : '';$test = array();$arra = array();$list = array();$array = array();if($ca == "column"){    //获取栏目列表和栏目下文章数量    if(empty($cfg_dbprefix)){        $column = 'select * from arctype where topid = 0';        $model = mysqli_query($link, $column);        while ($datas =  mysqli_fetch_assoc($model)) {            $array[] = $datas;        }        foreach ($array as $kas => $vas) {            if ($res = mysqli_query($link, "select * from archives where typeid = ". $vas['id'])) {                /* Fetch the results of the query 返回查询的结果 */                while ($rows = mysqli_fetch_assoc($res)) {                    $test[$kas][] = $rows;                }            }            @$array[$kas]['count'] = count($test[$kas]);        }        $tmp['msg'] = "ok";        $tmp['info'] = $array;        echo $callback."(".json_encode($tmp).")";    }else{        $column = 'select * from '.$cfg_dbprefix.'arctype where topid = 0';        $model = mysqli_query($link, $column);        while ($datas =  mysqli_fetch_assoc($model)) {            $array[] = $datas;        }        foreach ($array as $kas => $vas) {            if ($res = mysqli_query($link, "select * from '.$cfg_dbprefix.'archives where typeid = ". $va['id'])) {                /* Fetch the results of the query 返回查询的结果 */                while ($rows = mysqli_fetch_assoc($res)) {                    $test[$kas][] = $rows;                }            }            @$array[$kas]['count'] = count($test[$kas]);        }        $tmp['msg'] = "ok";        $tmp['info'] = $array;        echo $callback."(".json_encode($tmp).")";    }}else if($ca == "columnSon"){    $did = $_GET['did'];    //获取子栏目    if(empty($cfg_dbprefix)){        $colum = 'select * from arctype where reid = '.$did;        $mode = mysqli_query($link, $colum);        while ($dat =  mysqli_fetch_assoc($mode)) {            $arra[] = $dat;        }        foreach ($arra as $k => $v) {            if ($re = mysqli_query($link, "select * from archives where typeid = ". $v['id'])) {                /* Fetch the results of the query 返回查询的结果 */                while ($row = mysqli_fetch_assoc($re)) {                    $test[$k][] = $row;                }            }            $arra[$k]['count'] = count($test[$k]);        }        if(!empty($arra)){            $tmp['msg'] = "ok";            $tmp['info'] = $arra;            echo $callback."(".json_encode($tmp).")";        }else{            $tmp['msg'] = "no";            $tmp['info'] = "宝宝心情不好，不想给你数据...";            echo $callback."(".json_encode($tmp).")";        }    }else{        $colum = 'select * from '.$cfg_dbprefix.'arctype where reid = '.$did;        $mode = mysqli_query($link, $colum);        while ($dat =  mysqli_fetch_assoc($mode)) {            $arra[] = $dat;        }        foreach ($arra as $k => $v) {            if ($re = mysqli_query($link, "select * from '.$cfg_dbprefix.'archives where typeid = ". $v['id'])) {                /* Fetch the results of the query 返回查询的结果 */                while ($row = mysqli_fetch_assoc($re)) {                    $test[$k][] = $row;                }            }            $arra[$k]['count'] = count($test[$k]);        }        if(!empty($arra)){            $tmp['msg'] = "ok";            $tmp['info'] = $arra;            echo $callback."(".json_encode($tmp).")";        }else{            $tmp['msg'] = "no";            $tmp['info'] = "宝宝心情不好，不想给你数据...";            echo $callback."(".json_encode($tmp).")";        }    }}

那个什么，callback可以自定义，jQuery会自动生成，相当于token验证，所以传回来的数据必须包含这类数据，，，，

大体就这么多，样式和结构比较简单，大家可以一起来探讨一下。。。。。。。。。。。。。。。。。。。。。。。。。。。

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