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。
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>
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));
}
}
@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
}
application.properties
文件中,设置加密密钥:mybatis.configuration.map-underscore-to-camel-case=true
mybatis.configuration.default-fetch-size=100
mybatis.configuration.default-statement-timeout=30
mybatis.configuration.default-result-set-type=org.apache.ibatis.resultset.DefaultResultSetType
mybatis.configuration.default-logging-level=INFO
# 设置加密密钥
encryption.key=your_secret_key_here
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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