微信 获取手机号

//小程序固定了获取手机号的方式  必须要用户主动触发
<button bindgetphonenumber='getPhoneNumber' open-type='getPhoneNumber'> </button>

//判断授权
getPhoneNumber(e){
    var that = this;
    if(e.detail.errMsg == 'getPhoneNumber:ok'){
      wx.login({
        success (res) {
          if (res.code) {
            let param={'designEffectId':that.data.designEffectId,'code':res.code,'encryptedData':e.detail.encryptedData,'iv':e.detail.iv}
            //此处请求后台
          } else {
            console.log('获取失败！')
          }
        }
      }) 
    }else{
      console.log("拒绝授权，无法查看")
    }  
  }

//后台的处理方法
public void getUserMobile(HttpServletRequest request,HttpServletResponse response) {

        String encryptedData = request.getParameter("encryptedData");
        String iv = request.getParameter("iv");
　　　　　String code = request.getParameter("code");
　　　　　//利用code可获取openid和sessionKey
　　　　　//获取的urlhttps://api.weixin.qq.com/sns/jscode2session?appid=你的appid&secret=你的AppSecret&js_code=接受到的code&grant_type=authorization_code";
        String openid = ""//;
        String sessionKey = ""
         * 解析式需要的操作
         * 1.下载bcprov-jdkxx-xxx.jar
           2.将bcprov-jdkxx-xxx.jar放入$JAVA_HOME/jre/lib/ext下
           3.打开$JAVA_HOME/jre/lib/security下的java.security文件，在末尾加上
            security.provider.x=org.bouncycastle.jce.provider.BouncyCastleProvider
         */
        JSONObject json = new JSONObject();
        if(!StringUtil.isEmpty(encryptedData) && !StringUtil.isEmpty(sessionKey) && !StringUtil.isEmpty(iv)) {
            String mobileStr = WechatDecryptDataUtil.wxDecrypt(encryptedData, sessionKey, iv);
            //mobileStr的数据{"phoneNumber":"152********","purePhoneNumber":"152********","countryCode":"86","watermark":{"timestamp":1605842111,"appid":""}}
           } try {
            Writer out = response.getWriter();
            out.write(json.toString());
            out.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }