前面發過一篇關于新版本微信小程序獲取手機號，再強調下，老版本是通過wx.login()獲取code ，新版本具體參考微信小程序官方文檔 https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/phonenumber/phonenumber.getPhoneNumber.html思路：用戶點擊登錄，獲取code，點擊授權按鈕，獲取加密數據，傳遞后端接口，后端調用工具類解析手機號，返回 代碼： 參數實體類@Data @NoArgsConstructor @AllArgsConstructor public class PhoneForm {@ApiModelProperty("phone")private String phone;private String code;@ApiModelProperty("加密數據")private String encryptedData;@ApiModelProperty("密鑰")private String iv;@ApiModelProperty("cloudID")private String cloudID;private String grantType;private String appid;private String secret; }微信解密工具類public class WechatDecryptDataUtil {public static String decryptData(String encryptDataB64, String sessionKeyB64, String ivB64) {return new String(decryptOfDiyIV(Base64.decode(encryptDataB64),Base64.decode(sessionKeyB64),Base64.decode(ivB64)));}private static final String KEY_ALGORITHM = "AES";private static final String ALGORITHM_STR = "AES/CBC/PKCS7Padding";private static Key key;private static Cipher cipher;private static void init(byte[] keyBytes) {// 如果密鑰不足16位，那么就補足. 這個if 中的內容很重要int base = 16;if (keyBytes.length % base != 0) {int groups = keyBytes.length / base + (keyBytes.length % base != 0 ? 1 : 0);byte[] temp = new byte[groups * base];Arrays.fill(temp, (byte) 0);System.arraycopy(keyBytes, 0, temp, 0, keyBytes.length);keyBytes = temp;}// 初始化Security.addProvider(new BouncyCastleProvider());// 轉化成JAVA的密鑰格式key = new SecretKeySpec(keyBytes, KEY_ALGORITHM);try {// 初始化ciphercipher = Cipher.getInstance(ALGORITHM_STR, "BC");} catch (Exception e) {e.printStackTrace();}}/*** 解密方法** @param encryptedData 要解密的字符串* @param keyBytes 解密密鑰* @param ivs 自定義對稱解密算法初始向量 iv* @return 解密后的字節數組*/private static byte[] decryptOfDiyIV(byte[] encryptedData, byte[] keyBytes, byte[] ivs) {byte[] encryptedText = null;init(keyBytes);try {cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(ivs));encryptedText = cipher.doFinal(encryptedData);} catch (Exception e) {e.printStackTrace();}return encryptedText;} }業務邏輯@Overridepublic String getPhoneNumber(PhoneForm phoneForm) {String url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + appid + "&secret=" + appsecret + "&js_code=" + phoneForm.getCode() + "&grant_type=authorization_code";String s = HttpClientUtil.doGet(url, null);String session_key = JSONUtil.parseObj(s).getStr("session_key");String result = WechatDecryptDataUtil.decryptData(phoneForm.getEncryptedData(), session_key, phoneForm.getIv());JSONObject jsonObject = JSONObject.parseObject(result);return jsonObject.get("phoneNumber").toString();}

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