Add javadoc.
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@ -9,6 +9,8 @@ import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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/**
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* 对微信小程序用户加密数据的解密.
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*
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* @see <a href="https://developers.weixin.qq.com/miniprogram/dev/api/signature.html#wxchecksessionobject">加密数据解密算法</a>
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*/
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public class WXBizDataCrypt {
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@ -22,6 +24,13 @@ public class WXBizDataCrypt {
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this.sessionKey = sessionKey;
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}
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/**
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* 解密微信小程序用户加密数据.
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*
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* @param encryptedData 加密的用户数据.
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* @param iv 与用户数据一同返回的初始向量.
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* @return 解密后的原文.
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*/
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public JSONObject decryptData(final String encryptedData, final String iv) {
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final byte[] aesKey = Base64.decodeBase64(sessionKey);
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final byte[] aesCipher = Base64.decodeBase64(encryptedData);
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