小程序解析手机号

1，通过code获取sesionKey和openid
封装实体类

public class WxMaJscode2SessionResult {
    private String session_key;

    private String openid;

    private String unionid;

    private Integer errcode;

    private String errmsg;
}

2，通过jsCode获取相关信息

  Map<String, Object> param = Maps.newHashMap();
        param.put("appid", appid);
        param.put("secret", secret);
        param.put("js_code", jsCode);
        param.put("grant_type", "authorization_code");
        log.info("小程序登录参数 param = {}", JSONObject.toJSONString(param));
        String result = HttpUtil.get("https://api.weixin.qq.com/sns/jscode2session", param);
        log.info("小程序登录返回的结果:" + result);
        WxMaJscode2SessionResult wxMaJscode2SessionResult = JSONObject.parseObject(result, WxMaJscode2SessionResult.class);
        log.info("小程序登录返回的结果转换对应的结果 实体转换 --WxMaJscode2SessionResult = {}", JSONObject.toJSONString(wxMaJscode2SessionResult));
        return wxMaJscode2SessionResult;



3，获取手机号解密的方法



package com.test.utils;

import com.alibaba.fastjson.JSONObject;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
import org.bouncycastle.jce.provider.BouncyCastleProvider;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.security.AlgorithmParameters;
import java.security.Security;
import java.util.Arrays;

public class WXUtils {
    public static JSONObject getUserInfo(String encryptedData, String sessionKey, String iv){
        // 被加密的数据
        byte[] dataByte = Base64.decode(encryptedData);
        // 加密秘钥
        byte[] keyByte = Base64.decode(sessionKey);
        // 偏移量
        byte[] ivByte = Base64.decode(iv);

        try {
            // 如果密钥不足16位，那么就补足.  这个if 中的内容很重要
            int base = 16;
            if (keyByte.length % base != 0) {
                int groups = keyByte.length / base + (keyByte.length % base != 0 ? 1 : 0);
                byte[] temp = new byte[groups * base];
                Arrays.fill(temp, (byte) 0);
                System.arraycopy(keyByte, 0, temp, 0, keyByte.length);
                keyByte = temp;
            }
            // 初始化
            Security.addProvider(new BouncyCastleProvider());
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding","BC");
            SecretKeySpec spec = new SecretKeySpec(keyByte, "AES");
            AlgorithmParameters parameters = AlgorithmParameters.getInstance("AES");
            parameters.init(new IvParameterSpec(ivByte));
            cipher.init(Cipher.DECRYPT_MODE, spec, parameters);// 初始化
            byte[] resultByte = cipher.doFinal(dataByte);
            if (null != resultByte && resultByte.length > 0) {
                String result = new String(resultByte, "UTF-8");
                return JSONObject.parseObject(result);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

}

解密结果获取手机号

   JSONObject obj= WXUtils.getUserInfo(encryptedData, sessionKey, iv);
        if (obj!= null && obj.toJSONString().length() > 0) {
            String mobile = userinfo.getString("phoneNumber");
}



<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15on</artifactId>
    <version>1.59</version>
</dependency>