MyBatis在SpringBoot2中的数据加密与解密

在Spring Boot 2中使用MyBatis进行数据加密和解密,你可以使用Java的加密库(如Java Cryptography Extension, JCE)或者第三方加密库(如Bouncy Castle)来实现。这里我将介绍如何使用Java自带的加密库来实现数据加密和解密。

  1. 首先,你需要在pom.xml文件中添加Java加密库的依赖:
<dependency> <groupId>org.bouncycastle</groupId> <artifactId>bcprov-jdk15on</artifactId> <version>1.68</version></dependency>
  1. 创建一个加密工具类,用于实现数据的加密和解密:
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64; public class EncryptionUtil { private static final String ALGORITHM = "AES"; private static final String TRANSFORMATION = "AES/ECB/PKCS5Padding"; public static SecretKey generateSecretKey() throws Exception { KeyGenerator keyGenerator = KeyGenerator.getInstance(ALGORITHM);
        keyGenerator.init(128); return keyGenerator.generateKey();
    } public static String encrypt(String data, SecretKey secretKey) throws Exception { Cipher cipher = Cipher.getInstance(TRANSFORMATION);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey); byte[] encryptedBytes = cipher.doFinal(data.getBytes()); return Base64.getEncoder().encodeToString(encryptedBytes);
    } public static String decrypt(String encryptedData, SecretKey secretKey) throws Exception { Cipher cipher = Cipher.getInstance(TRANSFORMATION);
        cipher.init(Cipher.DECRYPT_MODE, secretKey); byte[] decodedBytes = Base64.getDecoder().decode(encryptedData); return new String(cipher.doFinal(decodedBytes));
    }
}
  1. 在你的实体类中,使用@ColumnTransformer注解来实现数据加密和解密:
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import org.apache.ibatis.annotations.ColumnTransformer; public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @Column @ColumnTransformer(write = "AES_ENCRYPT(?, #{secretKey})", read = "AES_DECRYPT(?, #{secretKey})") private String sensitiveData; // 省略getter和setter方法}
  1. 在你的application.properties文件中,设置加密密钥:
mybatis.configuration.map-underscore-to-camel-case=truemybatis.configuration.default-fetch-size=100mybatis.configuration.default-statement-timeout=30mybatis.configuration.default-result-set-type=org.apache.ibatis.resultset.DefaultResultSetTypemybatis.configuration.default-logging-level=INFO# 设置加密密钥encryption.key=your_secret_key_here
  1. 在你的UserMapper.xml文件中,编写对应的SQL语句:
<mapper namespace="com.example.demo.mapper.UserMapper"> <select id="getUserById" resultType="com.example.demo.entity.User"> SELECT * FROM user WHERE id = #{id} </select> <insert id="insertUser" parameterType="com.example.demo.entity.User"> INSERT INTO user (id, sensitive_data) VALUES (#{id}, #{sensitiveData}) </insert></mapper>

现在,当你使用MyBatis插入和查询数据时,敏感数据将会自动加密和解密。请确保将your_secret_key_here替换为你自己的密钥。

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