tp5 获取接口数据 curl 原生ajax请求获取 juqery获取及 jsonp请求跨域

深藏阁楼爱情的钟 2022-02-21 01:08 731阅读 0赞

//使用file_get_contents获取接口数据
    	public function api(){
    		$url="http://172.16.112.3/api.php"; //url地址
    		$data=file_get_contents($url);      
    		print_r($data);
    	}
    
    
    //使用curl获取接口数据
    	public function api(){
    		$data_url = "http://172.16.112.3/api.php";     //数据所在地址
    		 $ch = curl_init();//初始化
    		curl_setopt($ch, CURLOPT_URL, $data_url);//设置访问的URL
    		curl_setopt($ch, CURLOPT_HEADER, false);//设置不需要头信息
    		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);//只获取页面内容，但不输出
    		 $str = curl_exec($ch);//执行访问，返回结果
    		curl_close($ch);//关闭curl，释放资源
    		return $str;
    	}

### ** 使用封装的curl类来进行获取数据** ###

把分装好的类放在tp5的extend下：![20190410102017622.png][]

代码如下：

<?php
    
    
    class Curl
    {
        /**
     * @param $url
     * @return bool|mixed
     */
        static public function get($url){
            $oCurl = curl_init();
            if(stripos($url,"https://")!==FALSE){
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);
                curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
            }
            curl_setopt($oCurl, CURLOPT_URL, $url);
            curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );
            $sContent = curl_exec($oCurl);
            $aStatus = curl_getinfo($oCurl);
            curl_close($oCurl);
            if(intval($aStatus["http_code"])==200){
                return $sContent;
            }else{
                return false;
            }
        }
    
        /**
         * @param $url
         * @return bool|mixed
         */
        static public function getXml($url){
            $oCurl = curl_init();
            if(stripos($url,"https://")!==FALSE){
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);
                curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
            }
            curl_setopt($oCurl, CURLOPT_URL, $url);
            curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );
            $sContent = curl_exec($oCurl);
            $aStatus = curl_getinfo($oCurl);
            curl_close($oCurl);
            $xml = simplexml_load_string($sContent);
            if($xml){
                return $xml;
            }else{
                return false;
            }
    
    
        }
    
        /**
         * POST 请求
         * @param string $url
         * @param array $param
         * @param boolean $post_file 是否文件上传
         * @return string content
         */
        static public function post($url,$param,$post_file=false){
            $oCurl = curl_init();
            if(stripos($url,"https://")!==FALSE){
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
                curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false);
                curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
            }
            if (is_string($param) || $post_file) {
                $strPOST = $param;
            } else{
                $aPOST = array();
                foreach($param as $key=>$val){
                    $aPOST[] = $key."=".urlencode($val);
                }
                $strPOST =  join("&", $aPOST);
            }
            curl_setopt($oCurl, CURLOPT_URL, $url);
            curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );
            curl_setopt($oCurl, CURLOPT_POST,true);
            curl_setopt($oCurl, CURLOPT_POSTFIELDS,$strPOST);
            $sContent = curl_exec($oCurl);
            $aStatus = curl_getinfo($oCurl);
            curl_close($oCurl);
            dump(json_decode($sContent));
            if(intval($aStatus["http_code"])==200){
                return $sContent;
            }else{
                return false;
            }
        }
    
    
        static public function getCurlFileMedia($file_path){
            if (class_exists('\CURLFile')) {// 这里用特性检测判断php版本
                $data =  new \CURLFile($file_path,"","");//>=5.5
            } else {
                $data =  '@' . $file_path;//<=5.5
            }
            return $data;
    
        }
        static public function  curlFile($url,$data){
    // 兼容性写法参考示例
            $curl = curl_init();
            if (class_exists('\CURLFile')) {// 这里用特性检测判断php版本
                curl_setopt($curl, CURLOPT_SAFE_UPLOAD, true);
    
            } else {
                if (defined('CURLOPT_SAFE_UPLOAD')) {
                    curl_setopt($curl, CURLOPT_SAFE_UPLOAD, false);
                }
            }
            curl_setopt($curl, CURLOPT_URL, $url);
            curl_setopt($curl, CURLOPT_POST, 1 );
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl, CURLOPT_USERAGENT,"TEST");
            $result = curl_exec($curl);
        //    $error = curl_error($curl);
            $status = curl_getinfo($curl);
            curl_close($curl);
            if(intval($status["http_code"])==200){
                return $result;
            }else{
                return false;
            }
    
    
    
        }
    
    
        /**
         * 生成安全JSON数据
         * @param array $array
         * @return string
         */
        static public function jsonEncode($array)
        {
            return preg_replace_callback('/\\\\u([0-9a-f]{4})/i', create_function('$matches', 'return mb_convert_encoding(pack("H*", $matches[1]), "UTF-8", "UCS-2BE");'), json_encode($array));
        }
    
        static public function  curlDownload($url, $dir)
        {
            $ch = curl_init($url);
            $fp = fopen($dir, "wb");
            curl_setopt($ch, CURLOPT_FILE, $fp);
            curl_setopt($ch, CURLOPT_HEADER, 0);
            $res = curl_exec($ch);
            curl_close($ch);
            fclose($fp);
            return $res;
        }
    }

控制器调用：

<?php
    
    namespace app\index\controller;
    use think\Db;
    use think\Controller;
    use think\Request;
    use Curl; //调用基类
    class Index extends Controller
    {
    
    	public function api(){
            //调用方法
    		$data=Curl::get('http://172.16.112.3/api.php');
    		print_r($data);
    
    	}
    
    }

###    ** 原生ajax请求获取数据** ###

### query请求获取数据  ###

<!DOCTYPE html>
    <html lang="en">
    <head>
    	<meta charset="UTF-8">
    	<title>Document</title>
    </head>
    <body>
    	<div id=""></div>
    </body>
    </html>
    <script type="text/javascript" src='jq.js'></script>
    <script type="text/javascript">
    $.ajax({
    	url:"http://172.16.112.3/api.php",
    	dataType:"json",  
    	success:function(e){
    		console.log(e);
    		$("div").attr("id",e.id+","+e.username+","+e.email+","+e.phone);
    		$("div").text(e.id+","+e.username+","+e.email+","+e.phone);
    	}
    })
    </script>

跨域问题：请求的服务器加上以下代码即可

header("Access-Control-Allow-Origin:*");
    header("Access-Control-Allow-Methods:GET, POST, OPTIONS, DELETE");
    header("Access-Control-Allow-Headers:DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type, Accept-Language, Origin, Accept-Encoding");

### jsonp跨域请求 ###

html代码
    <script src="/static/jq.js" ></script>
    <script type="text/javascript">
    $.ajax({
    	url:"http://172.16.112.3/api.php",
    	dataType:"jsonp",  
    	success:function(e){
    		console.log(e); //控制台显示数据
    	}
    })
    </script>
    
    //后台代码
    $user = array("id"=>1,
                    "username"=>"zhangsan",
                    "email"=>"xx@163.com",
                    "phone"=>"131456373737"
                        );
    echo $_GET['callback']."(".json_encode($user).")"; //返回json数据

###  原生js实现jsonp跨域请求 ###

josnp具体可以参考此博客：

[http://baijiahao.baidu.com/s?id=1596094573722602418&wfr=spider&for=pc][http_baijiahao.baidu.com_s_id_1596094573722602418_wfr_spider_for_pc]

[20190410102017622.png]: /images/20220221/4d69c00225144a56a072a48b2463ff91.png
[http_baijiahao.baidu.com_s_id_1596094573722602418_wfr_spider_for_pc]: http://baijiahao.baidu.com/s?id=1596094573722602418&wfr=spider&for=pc