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微信小程序用户授权获取手机号(getPhoneNumber)

前言

小程序有一个获取用户很便捷的api,就是通过getPhoneNumber获取用户的已经绑定微信的手机号码。有一点要大家注意,现在微信和注重用户体验,有些方法都是需要用户主动去触发才能调用的,比如getPhoneNumber。

实现思路:

1、通过wx.login获取code,从而获取到用户的openID和sessionKey

2、通过getPhoneNumber获取encryptedData,iv

3、通过参数【encryptedData】 、【iv】 、【sessionKey】  请求后台解密获取用户手机号

直接上干货:

1、用户点击获取用户手机号码按钮

?

< button class = 'pop_btn' plain = "true"

 

open-type = 'getPhoneNumber' bindgetphonenumber = "getPhoneNumber" >获取用户手机号</ button >

2、弹出授权图片:

3、通过解密获取手机号码

直接上代码:

?

wxlogin: function () { //获取用户的openID和sessionKey

   var that = this ;

   wx.login({

     //获取code 使用wx.login得到的登陆凭证,用于换取openid

     success: (res) = >{

       wx.request({

         method: "GET" ,

         url: 'https://xxxwx/wxlogin.do' ,

         data: {

           code: res.code,

           appId: "appIdSbcx" ,

           appKey: "appKeySbcx"

 

         },

         header: {

           'content-type' : 'application/json' // 默认值

         },

         success: (res) = >{

           console.log(res);

           that.setData({

             sessionKey: res.data.session_key

 

           });

         }

       });

     }

   });

}

 

getPhoneNumber: function (e) { //点击获取手机号码按钮

   var that = this ;

   wx.checkSession({

     success: function () {

       console.log(e.detail.errMsg)

       console.log(e.detail.iv)

       console.log(e.detail.encryptedData)

       var ency = e.detail.encryptedData;

       var iv = e.detail.iv;

       var sessionk = that.data.sessionKey;

       if (e.detail.errMsg == 'getPhoneNumber:fail user deny' ) {

         that.setData({

           modalstatus: true

         });

 

       } else { //同意授权

         wx.request({

           method: "GET" ,

url: 'https://xxx/wx/deciphering.do' ,

           data: {

             encrypdata: ency,

             ivdata: iv,

             sessionkey: sessionk

           },

           header: {

             'content-type' : 'application/json' // 默认值

           },

           success: (res) = >{

             console.log( "解密成功~~~~~~~将解密的号码保存到本地~~~~~~~~" );

             console.log(res);

             var phone = res.data.phoneNumber;

             console.log(phone);

           },

           fail: function (res) {

             console.log( "解密失败~~~~~~~~~~~~~" );

             console.log(res);

           }

         });

       }

 

     },

 

     fail: function () {

       console.log( "session_key 已经失效,需要重新执行登录流程" );

       that.wxlogin(); //重新登录

     }

   });

}

后台代码:

?

/**

* 解密并且获取用户手机号码

* @param encrypdata

* @param ivdata

* @param sessionkey

* @param request

* @return

* @throws Exception

*/

@RequestMapping(value = "deciphering" , method = RequestMethod.GET)

public @ResponseBody String deciphering(String encrypdata,

String ivdata, String sessionkey,

HttpServletRequest request) {

 

     byte[] encrypData = Base64.decode(encrypdata);

     byte[] ivData = Base64.decode(ivdata);

     byte[] sessionKey = Base64.decode(sessionkey);

     String str= "" ;

try {

str = decrypt(sessionKey,ivData,encrypData);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

     System.out.println(str);

     return str;

 

}

public static String decrypt(byte[] key, byte[] iv, byte[] encData) throws Exception {

     AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv);

     Cipher cipher = Cipher.getInstance( "AES/CBC/PKCS5Padding" );

     SecretKeySpec keySpec = new SecretKeySpec(key, "AES" );

     cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);

     //解析解密后的字符串

     return new String(cipher.doFinal(encData), "UTF-8" );

   }

总结

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原文链接:https://blog.csdn.net/chen_pan_pan/article/details/80606658

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