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
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< 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:
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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:
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/** * 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