Java获取openid、session_key以及解密用户私密数据(UnionId或手机号)
时间: 2024-02-19 17:01:57 浏览: 18
要在Java中获取openid和session_key,您需要使用微信提供的小程序登录API。您可以通过调用以下API获取openid和session_key:
```java
String appId = "yourAppId";
String secret = "yourAppSecret";
String jsCode = "wx.login()获取到的code";
String url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + appId + "&secret=" + secret + "&js_code=" + jsCode + "&grant_type=authorization_code";
HttpClient client = new HttpClient();
GetMethod method = new GetMethod(url);
client.executeMethod(method);
String response = method.getResponseBodyAsString();
JSONObject jsonObject = JSONObject.parseObject(response);
String openid = jsonObject.getString("openid");
String sessionKey = jsonObject.getString("session_key");
```
要解密用户私密数据(UnionId或手机号),您需要使用微信提供的AES解密算法。以下是示例代码:
```java
String iv = "yourIv";
String encryptedData = "用户加密数据";
String sessionKey = "从上面获取到的session_key";
try {
byte[] content = Base64.decodeBase64(encryptedData);
byte[] keyByte = Base64.decodeBase64(sessionKey);
byte[] ivByte = Base64.decodeBase64(iv);
SecretKeySpec keySpec = new SecretKeySpec(keyByte, "AES");
AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivByte);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
byte[] decryptedByte = cipher.doFinal(content);
String decryptedData = new String(decryptedByte, "UTF-8");
JSONObject jsonObject = JSONObject.parseObject(decryptedData);
String unionId = jsonObject.getString("unionId");
String phoneNumber = jsonObject.getString("phoneNumber");
} catch (Exception e) {
e.printStackTrace();
}
```
请注意,您需要在小程序后台配置您的加密算法参数,以便正确解密用户数据。此外,获取用户的UnionId需要您的小程序具有获取UnionId的权限。