Home > WeChat Applet > WeChat Development > How to get the current geographical location through WeChat and save it in the session

How to get the current geographical location through WeChat and save it in the session

一个新手
Release: 2017-09-14 09:04:14
Original
2048 people have browsed it

First, add the WeChat configuration file to the static page and obtain it through js.

<script type="text/javascript">
  wx.config({
    debug: false,
    appId: &#39;{$signPackage.appId}&#39;,
    timestamp: &#39;{$signPackage.timestamp}&#39;,
    nonceStr: &#39;{$signPackage.nonceStr}&#39;,
    signature: &#39;{$signPackage.signature}&#39;,
    jsApiList: [
      // 所有要调用的 API 都要加到这个列表中
      &#39;checkJsApi&#39;,
      &#39;openLocation&#39;,
       &#39;getLocation&#39;,
       &#39;scanQRCode&#39;
    ]
  });
  wx.ready(function () {
    $(&#39;#scan&#39;).click(function(){
      wx.scanQRCode({
        needResult: 0,
         });
       });
    wx.checkJsApi({
       jsApiList: [
         &#39;getLocation&#39;
      ],
      success: function (res) {
        if (res.checkResult.getLocation == false)
        {
          alert(&#39;你的微信版本太低,不支持微信JS接口,请升级到最新的微信版本!&#39;);
           return;
        }
      }
    });
    wx.getLocation({
      success: function (res) {
           var latitude = res.latitude; // 纬度,浮点数,范围为90 ~ -90
        var longitude = res.longitude; // 经度,浮点数,范围为180 ~ -180。
        var geoconv = &#39;http://api.map.baidu.com/geoconv/v1/?callback=coordinateTransformation&coords=&#39; + longitude + &#39;,&#39; + latitude + &#39;&from=1&to=5&ak=5BFNbSgnVF5g2O72NpvTDxFm&#39;;
        var script = document.createElement(&#39;script&#39;);
        script.src = geoconv;
        document.head.appendChild(script);
       },
      cancel: function (res) {
        alert(&#39;用户拒绝授权获取地理位置&#39;);
         }
     });
  });
  function coordinateTransformation(data)
  {
    var LATLNG = data.result[0].y + &#39;,&#39; + data.result[0].x;
    var url = &#39;http://api.map.baidu.com/geocoder/v2/?callback=getCurrentLocation&ak=5BFNbSgnVF5g2O72NpvTDxFm&location=&#39; + LATLNG + &#39;&output=json&pois=1&#39;;
    var script = document.createElement(&#39;script&#39;);
    script.src = url;
    document.head.appendChild(script);
   }
  function getCurrentLocation(data)
  {
    if(data.status === 0)
     {
      var address = data.result.formatted_address,
      x = data.result.location.lng,
         y = data.result.location.lat,
      city = data.result.addressComponent.city,
      street = data.result.addressComponent.street || data.result.formatted_address,
      reqData = &#39;street=&#39; + address + &#39;&name=&#39; + street + &#39;&lng=&#39; + x + &#39;&lat=&#39; + y + &#39;&city=&#39; + city;
      var url = "{:U(&#39;Index/savePosition&#39;)}";
       $.getJSON(url,{&#39;name&#39;:street,&#39;lng&#39;:x,&#39;lat&#39;: y,&#39;city&#39;:city},function(data)
       {
         if(data.returnCode) { }
      });
     }
   }
</script>
其次,在控制器中接收ajax传递的地理坐标,然后保存到session中。
public function savePosition()    {      
$city   = II(&#39;get.city&#39;,&#39;&#39;,&#39;trim&#39;);      
$addr = II(&#39;get.name&#39;,&#39;&#39;,&#39;trim&#39;);      
$lng   = II(&#39;get.lng&#39;,&#39;&#39;,&#39;trim&#39;);      
$lat    = II(&#39;get.lat&#39;,&#39;&#39;,&#39;trim&#39;);      
$myLocation = array(                
    &#39;city&#39;   =>$city,                
    &#39;addr&#39; =>$addr,                
    &#39;lng&#39;   =>$lng,               
    &#39;lat&#39;   =>$lat,      );
  $_SESSION[&#39;MyLocation&#39;] = $myLocation;
          $data[&#39;returnCode&#39;]  = 1;          
          $data[&#39;returnInfo&#39;]  = &#39;获取位置成功!&#39;;          
          $this->ajaxReturn($data);         
           return;    
           }
Copy after login

Note: The thinkphp framework is used. II is a custom method to obtain the value passed by get or post, the same as the I function.

The above is the detailed content of How to get the current geographical location through WeChat and save it in the session. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template