MySQL字段加密和解密
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加密：
aes_encrypt('admin','key')
2. 解密：
aes_decrypt(password,'key')
2.双向加密 通过密钥去加密，解密的时候的只有知道这个密钥的人来解密
加密：encode()
解密：decode()
encode(‘123456’ ‘adfdgfdhggfh’);
decode(password,’adfdgfdhggfh’);
3.PASSWORD(‘123456’)
password加密是不可逆转的
4.MD5(‘123456’)
//UserDao public User login(Connection con,User user) throws Exception{ User resultUser=null; String sql="select userName,AES_DECRYPT(password,'key') password from t_user where userName=? and AES_DECRYPT(PASSWORD,'key')=?"; PreparedStatement pstmt=con.prepareStatement(sql); pstmt.setString(1, user.getUserName()); pstmt.setString(2, user.getPassword()); ResultSet rs=pstmt.executeQuery(); if(rs.next()){ resultUser=new User(); resultUser.setUserName(rs.getString(1)); resultUser.setPassword(rs.getString(2)); System.out.println(resultUser.getPassword()+"^^^^^"); } return resultUser; } } //sql语句 insert into t_user (userName,password) values('admin',AES_ENCRYPT('123456','key')); select userName,AES_DECRYPT(password,'key')password from t_user;
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