我这样做:
String columns = "UserHash,EMail,Name,Gender,BirthYear,Birthday,MaritalStatus,UserID,ReferralUser,Likes";
String sql = "INSERT INTO Users ("+ columns+") VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?);";
byte[] bytesOfUserHash = user.getId().getBytes("UTF-8");
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] userHash = md.digest(bytesOfUserHash);
stmt = con.prepareStatement(sql);
stmt.setBytes(1,userHash);
stmt.setString(2, user.getEmail());
stmt.setString(3, user.getName());
stmt.setInt(4, user.getGender().value());
stmt.setString(5, birthday.split("-")[0]);
stmt.setString(6, birthday);
stmt.setInt(7, user.getRelationshipStatus().value());
stmt.setString(8, user.getId());
stmt.setString(9, referraluser);
stmt.setString(10, likesjson);
stmt.executeUpdate();
除了userHash
之外,正在插入所有值,因此查询成功。我该怎么检查?
另外,请注意我现在只是对用户ID进行哈希处理,但我想对用户ID + CURRENT_TIMESTAMP
进行哈希处理。
更新 作为一个完整性检查,我只是尝试将一个字符串扔到UserHash列中,因为它是VARCHAR(45)类型,并且它也不起作用。显然有些东西与MD5问题无关。
答案 0 :(得分:0)
您可以使用MySQL内置的MD5功能,只将userId作为参数传递
String sql = "INSERT INTO Users ("+ columns+") VALUES (MD5(CONCAT(?,CURRENT_TIMESTAMP), ?, ?, ?, ?, ?, ?, ?, ?, ?);";
stmt = con.prepareStatement(sql);
stmt.setInt(1,user.getId());
...