WeChat開発入門 (6) ユーザーデータの復号化

{
    "openId": "OPENID",
    "nickName": "NICKNAME",
    "gender": GENDER,
    "city": "CITY",
    "province": "PROVINCE",
    "country": "COUNTRY",
    "avatarUrl": "AVATARURL",
    "unionId": "UNIONID",
    "watermark":
    {
        "appid":"APPID",
        "timestamp":TIMESTAMP
    }
}

var that = this;wx.login({success: function (res) {
    //微信js_code
    that.setData({wxcode: res.code});
    //获取用户信息
    wx.getUserInfo({
        success: function (res) {
            //获取用户敏感数据密文和偏移向量
            that.setData({encryptedData: res.encryptedData})            that.setData({iv: res.iv})        }
    })}})

var httpclient = require('../../utils/httpclient.js')
VAR that = this//httpclient.req(url, data, method, success, fail)httpclient.req(  'http://localhost:8090/wxappservice/api/v1/wx/getSession',
  {
      apiName: 'WX_CODE',
      code: this.data.wxcode
  },
  'GET',
  function(result){
    var thirdSessionId = result.data.data.sessionId;
    that.setData({thirdSessionId: thirdSessionId})    //将thirdSessionId放入小程序缓存
    wx.setStorageSync('thirdSessionId', thirdSessionId)  },
  function(result){
    console.log(result)  });

//httpclient.req(url, data, method, success, fail)httpclient.req('http://localhost:8090/wxappservice/api/v1/wx/decodeUserInfo',
  {
    apiName: 'WX_DECODE_USERINFO',
    encryptedData: this.data.encryptedData,
    iv: this.data.iv,
    sessionId: wx.getStorageSync('thirdSessionId')  },
  'GET',
  function(result){
  //解密后的数据
    console.log(result.data)  },
  function(result){
    console.log(result)  });

/** * 解密用户敏感数据 * @param encryptedData 明文 * @param iv            加密算法的初始向量 * @param sessionId     会话ID * @return */@Api(name = ApiConstant.WX_DECODE_USERINFO)@RequestMapping(value = "/api/v1/wx/decodeUserInfo", method = RequestMethod.GET, produces = "application/json")public Map<String,Object> decodeUserInfo(@RequestParam(required = true,value = "encryptedData")String encryptedData,        @RequestParam(required = true,value = "iv")String iv,        @RequestParam(required = true,value = "sessionId")String sessionId){    //从缓存中获取session_key
    Object wxSessionObj = redisUtil.get(sessionId);    if(null == wxSessionObj){        return rtnParam(40008, null);
    }
    String wxSessionStr = (String)wxSessionObj;
    String sessionKey = wxSessionStr.split("#")[0];    try {
        AES aes = new AES();        byte[] resultByte = aes.decrypt(Base64.decodeBase64(encryptedData), Base64.decodeBase64(sessionKey), Base64.decodeBase64(iv));        if(null != resultByte && resultByte.length > 0){
            String userInfo = new String(resultByte, "UTF-8");            return rtnParam(0, userInfo);
        }
    } catch (InvalidAlgorithmParameterException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }    return rtnParam(50021, null);
}

public byte[] decrypt(byte[] content, byte[] keyByte, byte[] ivByte) throws InvalidAlgorithmParameterException {    initialize();    try {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
        Key sKeySpec = new SecretKeySpec(keyByte, "AES");

        cipher.init(Cipher.DECRYPT_MODE, sKeySpec, generateIV(ivByte));// 初始化 
        byte[] result = cipher.doFinal(content);        return result;
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();  
    } catch (NoSuchPaddingException e) {
        e.printStackTrace();  
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    } catch (IllegalBlockSizeException e) {
        e.printStackTrace();
    } catch (BadPaddingException e) {
        e.printStackTrace();
    } catch (NoSuchProviderException e) {        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (Exception e) {        // TODO Auto-generated catch block
        e.printStackTrace();
    }