ThinkPHP微信公众号上传图片实例

XHTML
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<script type="text/javascript">
window.onload=function(){
wx.config({
    debug: false,
    appId: '{$appid}',
    timestamp: '{$signPackage.timestamp}',
    nonceStr: '{$signPackage.nonceStr}',
    signature: '{$signPackage.signature}',
    jsApiList: [
      'chooseImage',
       'previewImage',
       'uploadImage',
       'downloadImage',
       'chooseWXPay',
       'getLocalImgData'
 
     ]
});
wx.ready(function(){
    // config信息验证后会执行ready方法，所有接口调用都必须在config接口获得结果之后，config是一个客户端的异步操作，所以如果需要在页面加载时就调用相关接口，则须把相关接口放在ready函数中调用来确保正确执行。对于用户触发时才调用的接口，则可以直接调用，不需要放在ready函数中。
  var idx = 0;
  var serverIds='';
  var images = {
    localId: [],
    serverId: []
  };
  ioslocId=[];//用于兼容ios的本地id列表 图片是base64格式的
  document.querySelector('#chooseImage').onclick = function () {
 
    wx.chooseImage({
      // sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
      success: function (res) {
        $("#photolist").html("");//每次选择图片完成后都清空之前已经添加的html节点
        rows="";//声明一个空字符串用于保存循环出来的html
        images.localId =images.localId.concat(res.localIds); // 返回选定照片的本地ID列表，localId可以作为img标签的src属性显示图片
        //调用上传递归函数
        uploadimg(images.localId);
 
 
 
        if (window.__wxjs_is_wkwebview) {  //判断ios是不是用的 wkwebview 内核
 
 
            for(var i=0;i<images.localId.length;i++){
 
               wx.getLocalImgData({  //循环调用  getLocalImgData
 
                  localId:res.localIds[i], // 图片的localID
                   success: function (res) {
 
                   var localData = res.localData; // localData是图片的base64数据，可以用img标签显示
                    localData = localData.replace('jgp', 'jpeg');//iOS 系统里面得到的数据，类型为 image/jgp,因此需要替换一下
                     ioslocId.push(localData)  //把base64格式的图片添加到ioslocId数组里 这样该数组里的元素都是base64格式的
 
                     rows="";
                     for(var j=0;j<ioslocId.length;j++){
                        rows+=`<div class="z_files" style="background-image: url(`+ioslocId[j]+`)"><div class="delete" data-id="`+j+`"></div></div>`
                        }
                   $("#photolist").html(rows);
                   },fail:function(res){
                    alert("res");
                   }
               });
            }
 
            alert(rows)
 
         }else{  //如果不是用的wkwebview 内核 或者是用的安卓系统 执行下面的xunh
 
             $.each(images.localId,function (index,el) {
                  rows+=`<div class="z_files" style="background-image: url(`+el+`);background-size:100%;background-repeat: no-repeat;">
                                 <div class="delete" data-id="`+index+`"></div>
                              </div>`
               });
            $("#photolist").html(rows);
         }
        function uploadimg(localIds){
          wx.uploadImage({
              localId: localIds[idx].toString(),
              isShowProgressTips: 1,
              success: function (res) {
 
                  idx++
                  //存储图片媒体ID，用，号分割
                  serverIds+=res.serverId+',';
                  if(idx<localIds.length){
                    setTimeout(function () {uploadimg(localIds);}, 100);
                    //调用上传递归函数
 
                  }else{
                      var result = '';
                       $.ajax({
                            type: "GET",
                            url: "{:Url('Fun/get_med')}",
                            data: {serverId:serverIds},
                            success: function(data){
                                      $("#shashibiya").html('');
                                      var bbs = eval(data);
                                      for (var i = 0; i < bbs.length; i++) {
                                         result +=   bbs[i].key+',';
                                        // result +=   '<input type="text" name="img'+i+'" value="'+bbs[i].key+'">';
                                      }
                                      $("input[name=img]").val(result);
                                     }
                        });
 
                    //上传序号归零
                    idx=0;
                    serverIds='';
                    return true;
                  }
 
              },
              fail: function () { alert('1'); }
              });
        }
 
              }
 
 
 
    });
  };
  });
}
 
</script>

根据微信serverId获取下载图片的路径
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  //根据微信serverId获取下载图片的路径
  public function get_med(){
    $serverId = input('serverId');
    $serverId = rtrim($serverId, ',');
    $serverId_list = explode(',',$serverId);
 
    $get =  new getjsapiticket();
    $urls = array();
    $i = 0;
    foreach ($serverId_list as $key => &$value) {
      $urls[$i]['key'] = $get->get_media($value);
      $i++;
    }
    echo json_encode($urls);

getjsapiticket
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<?PHP
namespace app\common\jssdk;//文件夹名称func
use Think\Controller;
 
Class getjsapiticket extends Controller{
/**
  * 专门用来检查微信接口返回值的。
  */
private function requestAndCheck($url, $method = 'GET', $fields = [])
{
     $return = httpRequest($url, $method, $fields);
     if ($return === false) {
        $this->error('http请求出错！');
         return false;
     }
     $wxdata = json_decode($return, true);
    //  $this->debug && $this->logDebugFile(['url' => $url,'fields' => $fields,'wxdata' => $wxdata]);
     if (isset($wxdata['errcode']) && $wxdata['errcode'] != 0) {
         if ($wxdata['errcode'] == 40001) {
             \think\Db::name('wx_user')->where('id', 1)->update(['web_expires' => 0]);//token错误
         }
         $this->error('错误码'.$wxdata['errcode']);
         return false;
     }
 
     if (strtoupper($method) === 'GET' && empty($wxdata)) {
       $this->error('微信http请求返回为空！');
 
         return false;
     }
 
     return $wxdata;
}
 
public function nihao(){
 
//  \think\Cache::connect($options);
//  $jsapi = \think\Cache::get('acc');
//  echo $jsapi;exit;
   $wechat = \think\Db::name('wx_user')->where('id',1)->find();
   $expire_time = $wechat['web_expires'];
   if($expire_time > time()){
      return $wechat['web_access_token'];
   }
 
 
   $appid = $wechat['appid'];
   $appsecret = $wechat['appsecret'];
   $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
 
   $return = $this->requestAndCheck($url, 'GET');
   if ($return === false) {
       return false;
   }
   $web_expires = time() + 7000; // 提前200秒过期
   \think\Db::name('wx_user')->where('id', 1)->update(['web_access_token'=>$return['access_token'], 'web_expires'=>$web_expires]);
   // $this->config['web_access_token'] = $return['access_token'];
   // $this->config['web_expires'] = $web_expires;
   return $return['access_token'];
 
}
/*
* 向用户推送消息
*/
public function push_msg($openid,$content){
    $access_token = $this->nihao();
 
    $url ="https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=".$access_token;
 
    $post_arr = array(
                    'touser'=>$openid,
                    'msgtype'=>'text',
                    'text'=>array(
                    'content'=>$content,
                        )
                    );
    $post_str = json_encode($post_arr,JSON_UNESCAPED_UNICODE);
    $return =  $this->requestAndCheck($url,'POST',$post_str);
    $return = json_decode($return,true);
 
}
 
//根据微信serverId获取下载图片的路径
public function get_media($serverId){
 
 
 
    $access_token=$this->nihao();
    $url ="https://api.weixin.qq.com/cgi-bin/media/get?access_token=".$access_token."&media_id=".$serverId;
    return $url;
 
 
//  //根据微信JS接口上传了图片,会返回上面写的images.serverId（即media_id），填在下面即可
// $str = "https://qyapi.weixin.qq.com/cgi-bin/media/get?access_token=".$access_token."&media_id=".$serverId;
 
//获取微信“获取临时素材”接口返回来的内容（即刚上传的图片）
 
// return json_encode($str);
// //__DIR__指向当前执行的PHP脚本所在的目录
//  echo __DIR__;
//  //以读写方式打开一个文件，若没有，则自动创建
//  $resource = fopen(__DIR__."/1.jpg" , 'w+');
//  //将图片内容写入上述新建的文件
//  fwrite($resource, $a);
//  //关闭资源
//  fclose($resource);
}
 
  // //获取access_token
  // function get_token(){
  //     $wechat = \think\Db::name('wx_user')->where('id',1)->find();
  //     $appid = $wechat['appid'];
  //     $appsecret = $wechat['appsecret'];
  //     $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
  //     $data = json_decode(file_get_contents($url),true);
  //     if($data['access_token']){
  //         return $data['access_token'];
  //     }else{
  //         echo "Error";
  //         exit();
  //     }
  // }
 
 
}
?>

 

提交数据到后台
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    $urls = rtrim($_POST['img'], ',');
    $url_lst = explode(',',$urls);
    foreach ($url_lst as $key => $value) {
 
      $url = $value;
      //图片存放的路径
      $data_time =date('Y-m-d',time());
      $path ="public/wx/".$data_time."/";
 
      if(!file_exists($path)){
          mkdir($path,0777,true); //创建目录
          chmod($path,0777); //赋予权限
      }
      //确保图片名唯一，防止重名产生覆盖
      $uniName ='wx_'.time().rand(1000,9000).'.jpg';
      $res =$this->getImage($url,$path,$uniName);
      echo json_encode($res);
    }
 
  //下载远程文件到本地
function getImage($url,$save_dir='',$filename='')
{
 
    //根据url获取远程文件
    $curl =curl_init();
    curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
    curl_setopt($curl,CURLOPT_TIMEOUT,500);
    curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,false);
    curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,false);
    curl_setopt($curl,CURLOPT_URL,$url);
    $res =curl_exec($curl);
    curl_close($curl);
    //把图片保存到指定目录下的指定文件
    if(file_put_contents($save_dir.$filename,$res)){
      return array(
          'file_name' =>$filename,
          'save_path'=>$save_dir.$filename,
          'error' =>0
      );
    }
 
 
}

 

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