欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

C#实现微信结合百度api获取当前用户地理位置的方法

程序员文章站 2023-12-14 09:11:10
本文实例讲述了c#实现微信结合百度api获取当前用户地理位置的方法。分享给大家供大家参考,具体如下: 操作步骤: 1. 先根据微信提供的接口文档获取到经纬度 参考文档...

本文实例讲述了c#实现微信结合百度api获取当前用户地理位置的方法。分享给大家供大家参考,具体如下:

操作步骤:

1. 先根据微信提供的接口文档获取到经纬度

参考文档地址:

2. 由于直接使用微信获取到的经纬度,来使用百度地图api获取地址存在500~1000米的偏差,有时候定位不是很准确,所以需要转换成百度的坐标

参考文档地址:

3. 根据百度api实现逆地址解析,获取当前位置

参考文档地址:

具体实例:

该例子是mvc项目

1. wx_location.cshtml页面:

@using system.web.optimization;
@{
 layout = "~/views/shared/master/_app.cshtml";
}
@section head{
}
<div data-role="page">
 <div data-role="header" id="header" data-position="fixed">
  <h1>微信定位页面</h1>
 </div>
 <div data-role="content" class="ui-content">
  <form id="add" method="post" onsubmit="return false">
   <table border="0" cellpadding="0" cellspacing="0" class="register_table">
    <tr class='tr_bg neiy'>
<td class='tdl neiy'>定位:</td>
<td class='tdr'><input id='txt_dw' name='dw' type='text' placeholder='正在定位' class='td_input' value='' /></td></tr>
   </table>
   <div data-role="footer" data-position="fixed" data-id="footernav">
    <div data-role="navbar">
     <ul>
      <li><a href="" style=" rel="external nofollow" font-size: 1em;">返回主页</a></li>
     </ul>
    </div>
   </div>
   @html.antiforgerytoken()
  </form>
 </div>
</div>
@section scripts{
  @*微信js-sdk*@
 <script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js" type="text/javascript"></script>
 <script type="text/javascript">
  //微信jssdk配置
  wx.config({
   debug: false,
   appid: "",
   timestamp: "@html.raw(viewdata["timestamp"])",
   noncestr: "@html.raw(viewdata["noncestr"])",
   signature: "@html.raw(viewdata["signature"])",
   jsapilist: [
     'checkjsapi',
     'onmenusharetimeline',
     'onmenushareappmessage',
     'onmenushareqq',
     'onmenushareweibo',
     'hidemenuitems',
     'showmenuitems',
     'hideallnonbasemenuitem',
     'showallnonbasemenuitem',
     'translatevoice',
     'startrecord',
     'stoprecord',
     'onrecordend',
     'playvoice',
     'pausevoice',
     'stopvoice',
     'uploadvoice',
     'downloadvoice',
     'chooseimage',
     'previewimage',
     'uploadimage',
     'downloadimage',
     'getnetworktype',
     'openlocation',
     'getlocation',
     'hideoptionmenu',
     'showoptionmenu',
     'closewindow',
     'scanqrcode',
     'choosewxpay',
     'openproductspecificview',
     'addcard',
     'choosecard',
     'opencard'
   ]
  });
  //wx.error(function (res) {
  // alert("错误:" + res);
  //});
  wx.checkjsapi({
   jsapilist: [
     'getlocation',
   ],
   success: function (res) {
    if (res.checkresult.getlocation == false) {
     alert('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!');
     return;
    }
   }
  });
  wx.ready(function () {
   wx.getlocation({
    type: 'wgs84', // 默认为wgs84的gps坐标,如果要返回直接给openlocation用的火星坐标,可传入'gcj02'
    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 speed = res.speed; // 速度,以米/每秒计
     var accuracy = res.accuracy; // 位置精度
     //alert(latitude + "。" + longitude);
     //获取到经纬度之后,异步去后台加载出来真实的地理位置
     $.post("/app/common/getlocation", { lat: latitude, lon: longitude },
      function (data) {
       //把返回回来的地理位置显示在页面的控件里面
       $("#txt_dw").val(data);
      }, 'html');
    },
    cancel: function (res) {
     alert('用户拒绝授权获取地理位置');
    }
   });
  });
 </script>
}

2.

/// <summary>
/// 微信定位
/// </summary>
/// <returns></returns>
public actionresult wx_location()
{
   #region 获取定位所需要的参数
   //jssdk js接口安全域名填写,
   //access_token来获取jsapi_ticket
   string ticket = getticket();
   var timestamp = tenpayutil.gettimestamp();
   var noncestr = tenpayutil.getnoncestr();
   //设置参数
   requesthandler paysignreqhandler = new requesthandler(system.web.httpcontext.current);
   //参数顺序。
   paysignreqhandler.setparameter("jsapi_ticket", ticket);
   paysignreqhandler.setparameter("noncestr", noncestr);
   paysignreqhandler.setparameter("timestamp", timestamp);
   paysignreqhandler.setparameter("url", request.url.absoluteuri);//url#号后不要
   // loghelper.writeinfolog("noncestr:" + noncestr + "。jsapi_ticked:" + ticket + "。timestamp:" + timestamp + "。url:"+request.url.absoluteuri + "。");
   viewdata["signature"] = paysignreqhandler.createsha1sign();
   //loghelper.writeinfolog("signature:" + paysignreqhandler.createsha1sign());
   viewdata["timestamp"] = timestamp;
   viewdata["noncestr"] = noncestr;
   #endregion
   return view();
}

3. 获取地理位置方法

#region 获取地理位置
public actionresult getlocation(string lat, string lon)
{
   //23.1294。113.3761
   loghelper.writeinfolog(lat + "。" + lon);
   string x = string.empty, y = string.empty, strreturn = string.empty;
   #region 先把微信经纬度(23.12536。113.36684 )转换成百度坐标
   string apiurl = "http://api.map.baidu.com/geoconv/v1/?coords=" + lon + "," + lat + "&from=1&to=5&ak=你的百度地图api密钥";
   webrequest request = webrequest.create(@apiurl);
   request.method = "post";
   webresponse response = request.getresponse();
   stream stream = response.getresponsestream();
   encoding encode = encoding.utf8;
   streamreader reader = new streamreader(stream, encode);
   string detail = reader.readtoend();
   var jd = jsonconvert.deserializeobject<baiducoordinates>(detail);
   list<bc_result> result = jd.result;
   foreach (var item in result)
   {
    x = item.x;
    y = item.y;
   }
   #endregion
   #region 通过得到的百度坐标进行逆地址解析获取到真实的地理位置
   apiurl = "http://api.map.baidu.com/geocoder/v2/?ak=8aocgagfz0r4mantipnitji0&callback=renderreverse&location=" + y + "," + x + "&output=json&pois=1";
   #region 通过传入的参数得到url请求
   request = webrequest.create(@apiurl);
   request.method = "post";
   response = request.getresponse();
   stream = response.getresponsestream();
   encode = encoding.utf8;
   reader = new streamreader(stream, encode);
   detail = reader.readtoend();
   //@"(?is)(?<=)(.∗)(?=)";//(?is)
   // string results = system.text.regularexpressions.regex.replace(detail, @"(?is)(?<=)(.∗)(?=)", "$2");
   string results = regex.match(detail, @"(?is)(?<=)(.∗)(?=)").result("$1");
   jsondata jsondta = jsonmapper.toobject(results);
   jsondata jditems = jsondta["result"];
   //获取结构化地址信息
   strreturn = (string)jditems["formatted_address"];
   loghelper.writeinfolog(strreturn);
   #endregion
   #endregion
   return content(strreturn);
}
#endregion

涉及到的相关方法以及类:

1. 获取ticket

#region w微信js-sdk权限签名
public string getticket()
{
   #region 通过 appid + appsecert 获取公众号的 access_token(不是用户的 access_token)
   string apiurl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + tenpayutil.appid + "&secret=" + tenpayutil.appsecret;
   #region 通过传入的参数得到url请求
   webrequest request = webrequest.create(@apiurl);
   request.method = "post";
   webresponse response = request.getresponse();
   stream stream = response.getresponsestream();
   encoding encode = encoding.utf8;
   streamreader reader = new streamreader(stream, encode);
   string detail = reader.readtoend();
   var jd = jsonconvert.deserializeobject<wx_jssdk>(detail);
   string access_token = (string)jd.access_token;
   session["access_token"] = access_token;
   #endregion
   #endregion
   #region 获取ticket
   apiurl = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + access_token + "&type=jsapi";
   request = webrequest.create(@apiurl);
   response = request.getresponse();
   stream = response.getresponsestream();
   encode = encoding.utf8;
   reader = new streamreader(stream, encode);
   detail = reader.readtoend();
   jd = jsonconvert.deserializeobject<wx_jssdk>(detail);
   string ticket = jd.ticket;
   session["ticket"] = ticket;
   #endregion
   return ticket;
}
#endregion

2. tenpayutil类

/// <summary>
/// tenpayutil 的摘要说明。
/// 配置文件
/// </summary>
public class tenpayutil
{
    public static string tenpay = "1";
    //财付通商户号
    public static string partner = "";/
    //财付通密钥
    public static string key = "";
    //微信appsecret
    public static string appsecret = "";
    //微信appid
    public static string appid = "";
    //paysignkey(非appkey)
    public static string appkey = "";
    //支付完成后的回调处理页面,*替换成notify_url.asp所在路径
    public static string tenpay_notify = "";
    public tenpayutil()
    {
    }
    public static string getnoncestr()
    {
      random random = new random();
      return md5util.getmd5(random.next(1000).tostring(), "gbk");
    }
    public static string gettimestamp()
    {
      timespan ts = datetime.utcnow - new datetime(1970, 1, 1, 0, 0, 0, 0);
      return convert.toint64(ts.totalseconds).tostring();
    }
    /** 对字符串进行url编码 */
    public static string urlencode(string instr, string charset)
    {
      //return instr;
      if (instr == null || instr.trim() == "")
        return "";
      else
      {
        string res;
        try
        {
          res = httputility.urlencode(instr, encoding.getencoding(charset));
        }
        catch (exception ex)
        {
          res = httputility.urlencode(instr, encoding.getencoding("gb2312"));
        }
        return res;
      }
    }
    /** 对字符串进行url解码 */
    public static string urldecode(string instr, string charset)
    {
      if (instr == null || instr.trim() == "")
        return "";
      else
      {
        string res;
        try
        {
          res = httputility.urldecode(instr, encoding.getencoding(charset));
        }
        catch (exception ex)
        {
          res = httputility.urldecode(instr, encoding.getencoding("gb2312"));
        }
        return res;
      }
    }
    /** 取时间戳生成随即数,替换交易单号中的后10位流水号 */
    public static uint32 unixstamp()
    {
      timespan ts = datetime.now - timezone.currenttimezone.tolocaltime(new datetime(1970, 1, 1));
      return convert.touint32(ts.totalseconds);
    }
    /** 取随机数 */
    public static string buildrandomstr(int length)
    {
      random rand = new random();
      int num = rand.next();
      string str = num.tostring();
      if (str.length > length)
      {
        str = str.substring(0, length);
      }
      else if (str.length < length)
      {
        int n = length - str.length;
        while (n > 0)
        {
          str.insert(0, "0");
          n--;
        }
      }
      return str;
    }
}

3. requesthandler类

/**
'签名工具类
============================================================================/// <summary>
'api说明:
'init();
'初始化函数,默认给一些参数赋值。
'setkey(key_)'设置商户密钥
'createmd5sign(signparams);字典生成md5签名
'genpackage(packageparams);获取package包
'createsha1sign(signparams);创建签名sha1
'parsexml();输出xml
'getdebuginfo(),获取debug信息
*
* ============================================================================
*/
public class requesthandler
{
    public requesthandler(httpcontext httpcontext)
    {
      parameters = new hashtable();
      this.httpcontext = httpcontext;
    }
    /** 密钥 */
    private string key;
    protected httpcontext httpcontext;
    /** 请求的参数 */
    protected hashtable parameters;
    /** debug信息 */
    private string debuginfo;
    /** 初始化函数 */
    public virtual void init()
    {
    }
    /** 获取debug信息 */
    public string getdebuginfo()
    {
      return debuginfo;
    }
    /** 获取密钥 */
    public string getkey()
    {
      return key;
    }
    /** 设置密钥 */
    public void setkey(string key)
    {
      this.key = key;
    }
    /** 设置参数值 */
    public void setparameter(string parameter, string parametervalue)
    {
      if (parameter != null && parameter != "")
      {
        if (parameters.contains(parameter))
        {
          parameters.remove(parameter);
        }
        parameters.add(parameter, parametervalue);
      }
    }
    //获取package带参数的签名包
    public string getrequesturl()
    {
      this.createsign();
      stringbuilder sb = new stringbuilder();
      arraylist akeys = new arraylist(parameters.keys);
      akeys.sort();
      foreach (string k in akeys)
      {
        string v = (string)parameters[k];
        if (null != v && "key".compareto(k) != 0)
        {
          sb.append(k + "=" + tenpayutil.urlencode(v, getcharset()) + "&");
        }
      }
      //去掉最后一个&
      if (sb.length > 0)
      {
        sb.remove(sb.length - 1, 1);
      }
      return sb.tostring();
    }
    //创建md5摘要,规则是:按参数名称a-z排序,遇到空值的参数不参加签名。
    protected virtual void createsign()
    {
      stringbuilder sb = new stringbuilder();
      arraylist akeys = new arraylist(parameters.keys);
      akeys.sort();
      foreach (string k in akeys)
      {
        string v = (string)parameters[k];
        if (null != v && "".compareto(v) != 0
          && "sign".compareto(k) != 0 && "key".compareto(k) != 0)
        {
          sb.append(k + "=" + v + "&");
        }
      }
      sb.append("key=" + this.getkey());
      string sign = md5util.getmd5(sb.tostring(), getcharset()).toupper();
      this.setparameter("sign", sign);
      //debug信息
      this.setdebuginfo(sb.tostring() + " => sign:" + sign);
    }
    //创建package签名
    public virtual string createmd5sign(string key, string value)
    {
      stringbuilder sb = new stringbuilder();
      arraylist akeys = new arraylist(parameters.keys);
      akeys.sort();
      foreach (string k in akeys)
      {
        string v = (string)parameters[k];
        if (null != v && "".compareto(v) != 0
          && "sign".compareto(k) != 0 && "key".compareto(k) != 0)
        {
          sb.append(k + "=" + v + "&");
        }
      }
      sb.append(key + "=" + value);
      string sign = md5util.getmd5(sb.tostring(), getcharset()).toupper();
      return sign;
    }
    //创建sha1签名
    public string createsha1sign()
    {
      stringbuilder sb = new stringbuilder();
      arraylist akeys = new arraylist(parameters.keys);
      akeys.sort();
      foreach (string k in akeys)
      {
        string v = (string)parameters[k];
        if (null != v && "".compareto(v) != 0
            && "sign".compareto(k) != 0 && "key".compareto(k) != 0)
        {
          if (sb.length == 0)
          {
            sb.append(k + "=" + v);
          }
          else
          {
            sb.append("&" + k + "=" + v);
          }
        }
      }
      string paysign = sha1util.getsha1(sb.tostring()).tostring().tolower();
      //debug信息
      this.setdebuginfo(sb.tostring() + " => sign:" + paysign);
      return paysign;
    }
    public string getbizsign()
    {
      dictionary<string, string> bizparameters = new dictionary<string, string>();
      arraylist akeys = new arraylist(parameters.keys);
      akeys.sort();
      foreach (string k in akeys)
      {
        string v = (string)parameters[k];
        if (!string.isnullorempty(k))
        {
          bizparameters.add(k.tolower(), v);
        }
      }
      if (!bizparameters.any(p => p.key.tolower() == "appkey"))
        bizparameters.add("appkey", tenpayutil.appkey);
      string bizstring = formatbizqueryparamap(bizparameters, false);
      return sha1util.sha1(bizstring);
    }
    public string formatbizqueryparamap(dictionary<string, string> paramap, bool urlencode)
    {
      string buff = "";
      try
      {
        var result = from pair in paramap orderby pair.key select pair;
        foreach (keyvaluepair<string, string> pair in result)
        {
          if (pair.key != "")
          {
            string key = pair.key;
            string val = pair.value;
            if (urlencode)
            {
              val = system.web.httputility.urlencode(val);
            }
            buff += key.tolower() + "=" + val + "&";
          }
        }
        if (buff.length == 0 == false)
        {
          buff = buff.substring(0, (buff.length - 1) - (0));
        }
      }
      catch (exception e)
      {
        throw e;
        //throw new sdkruntimeexception(e.message);
      }
      return buff;
    }
    //输出xml
    public string parsexml()
    {
      stringbuilder sb = new stringbuilder();
      sb.append("<xml>");
      int iisnumber = 0;
      foreach (string k in parameters.keys)
      {
        string v = (string)parameters[k];
        if (int.tryparse(v, out iisnumber))
        {
          sb.append("<" + k + ">" + v + "</" + k + ">");
        }
        else
        {
          sb.append("<" + k + "><![cdata[" + v + "]]></" + k + ">");
        }
      }
      sb.append("</xml>");
      return sb.tostring();
    }
    /** 设置debug信息 */
    public void setdebuginfo(string debuginfo)
    {
      this.debuginfo = debuginfo;
    }
    public hashtable getallparameters()
    {
      return this.parameters;
    }
    protected virtual string getcharset()
    {
      return this.httpcontext.request.contentencoding.bodyname;
    }
}

4. 实体

#region 微信sdk
public partial class wx_jssdk
{
  public string access_token { get; set; }
  public string ticket { get; set; }
}
#endregion
#region 百度坐标转换
public partial class baiducoordinates
{
  public string status { get; set; }
  public list<bc_result> result { get; set; }
}
public partial class bc_result
{
  public string x { get; set; }
  public string y { get; set; }
}
#endregion

更多关于c#相关内容感兴趣的读者可查看本站专题:《c#常见控件用法教程》、《winform控件用法总结》、《c#数据结构与算法教程》、《c#面向对象程序设计入门教程》及《c#程序设计之线程使用技巧总结

希望本文所述对大家c#程序设计有所帮助。

上一篇:

下一篇: