通过微信开源封装weixin-java-miniapp解密手机号出现:me.chanjar.weixin.common.error.WxRuntimeException: AES解密失败! 特此记录

1. 环境 :jdk1.8

2. 依赖

        <!--微信开源封装sdk-->
        <dependency>
            <groupId>com.github.binarywang</groupId>
            <artifactId>weixin-java-miniapp</artifactId>
            <version>4.1.0</version>
        </dependency>

3. controller层接口实现

    @ApiOperation(value = "小程序用户登录接口")
    @PostMapping(value = "/login")
    public Result login(@ApiIgnore @RequestParam Map<String, String> parameters) {
        return wxService.login(parameters);
    }

4. 小程序登录实现

       String code = parameters.get("code");
       String encryptedData = parameters.get("encryptedData");
       String iv = parameters.get("iv");
     // 通过code获取sessionInfo
       WxMaJscode2SessionResult sessionInfo = null;
        try {
            sessionInfo = wxMaService.getUserService().getSessionInfo(code);
        } catch (WxErrorException e) {
            e.printStackTrace();
        }

//获取sessionKey
String sessionKey = sessionInfo.getSessionKey();
...........
// 手机号查询
 WxMaPhoneNumberInfo phoneNumberInfo=wxMaService.getUserService().getPhoneNoInfo(sessionKey, encryptedData, iv);
............
/ 解密 encryptedData 获取用户信息
 WxMaUserInfo userInfo = wxMaService.getUserService().getUserInfo(sessionKey, encryptedData, iv);

5.异常问题：

me.chanjar.weixin.common.error.WxRuntimeException: AES解密失败!

6. 发现问题：

• 前端传参：http://ip:端口/api.app/v1/wx/login?code=073fOLll2c21y94kgDll2wdHjB2fOLlF&iv=ufJc0dtGYaLvKw/lwQvE8g==&encryptedData=7Kt4S3skEyeNXvmeQgoXtofCGmNH6gzTlzt3tGbn/g2NsTzd7T8mvUI6qElxY21tt9WI6p3ju5XeOYdG46tSHL4tqHDv2Q05VVanDz7n4wO03zhydqLI8Ts+tX/UsOFMOIOP0MJKhetFs5DfsF0SG6cCjoC98UOwZcwySS2wqhfQNbdRbhCq0fQU3w21vDAbxulX2tZvTEo7yNKt+Dd30A==
• 分解参数：

code=073fOLll2c21y94kgDll2wdHjB2fOLlF

iv=ufJc0dtGYaLvKw/lwQvE8g==

encryptedData=7Kt4S3skEyeNXvmeQgoXtofCGmNH6gzTlzt3tGbn/g2NsTzd7T8mvUI6qElxY21tt9WI6p3ju5XeOYdG46tSHL4tqHDv2Q05VVanDz7n4wO03zhydqLI8Ts+tX/UsOFMOIOP0MJKhetFs5DfsF0SG6cCjoC98UOwZcwySS2wqhfQNbdRbhCq0fQU3w21vDAbxulX2tZvTEo7yNKt+Dd30A==

• 后端获取参数

code= 073fOLll2c21y94kgDll2wdHjB2fOLlF

iv=ufJc0dtGYaLvKw/lwQvE8g==

encryptedData=7Kt4S3skEyeNXvmeQgoXtofCGmNH6gzTlzt3tGbn/g2NsTzd7T8mvUI6qElxY21tt9WI6p3ju5XeOYdG46tSHL4tqHDv2Q05VVanDz7n4wO03zhydqLI8Ts tX/UsOFMOIOP0MJKhetFs5DfsF0SG6cCjoC98UOwZcwySS2wqhfQNbdRbhCq0fQU3w21vDAbxulX2tZvTEo7yNKt Dd30A==

• 参数对比得到：后端获取encryptedData参数中“+”（加号） 转换为空格，导致解密失败

问题解决：

密文串要用 json 格式传输，不能用参数拼接的方式，会把密文串的加号转换为空格，导致解密失败。

7.结束

解密成功