前言
Github：https://github.com/HealerJean
部落格：http://blog.healerjean.com
為了保護使用者隐私，我們需要對資料庫使用者關鍵資料，入庫加密，取出來解密。為了我們系統自身的安全資料庫連接配接使用者名和密碼都要加解密
1、資料庫連接配接加解密
1.1、資料庫連接配接配置
####################################
### DB
####################################
#durid
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.druid.initialSize=5
spring.datasource.druid.minIdle=5
spring.datasource.druid.maxActive=20
spring.datasource.druid.maxWait=60000
spring.datasource.druid.timeBetweenEvictionRunsMillis=60000
spring.datasource.druid.minEvictableIdleTimeMillis=300000
spring.datasource.druid.validationQuery=SELECT 1 FROM DUAL
spring.datasource.druid.testWhileIdle=true
spring.datasource.druid.testOnBorrow=false
spring.datasource.druid.testOnReturn=false
#####################################
#### DB
####################################
spring.datasource.druid.url=jdbc:mysql://127.0.0.1:3306/hlj_demo?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true
spring.datasource.druid.username=GCBeAUOZNANpmXfIUPO42qx/dQP80Lae3BI7ABxQN2AzWhgQAG+S6Dhe
spring.datasource.druid.password=GCAfE1p20be+BX5TZsVlFe1/T1bQ+f2IhnjqOQKe7CJT7xgQ8YOQrf7U
####################################
#是否需要資料連接配接加密
spring.datasource.encrypt=true 1.2、Java資料庫連接配接
package com.fintech.confin.web.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.fintech.confin.sensitivity.KeycenterUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.sql.DataSource;
/**
* @author HealerJean
* @ClassName DateSourceConfig
* @date 2020/4/9 10:43.
* @Description
*/
@Configuration
public class DateSourceConfig {
@Value("${spring.datasource.druid.driver-class-name}")
private String driverClassName;
@Value("${spring.datasource.druid.url}")
private String dbUrl;
@Value("${spring.datasource.druid.username}")
private String username;
@Value("${spring.datasource.druid.password}")
private String password;
@Value("${spring.datasource.druid.initialSize}")
private int initialSize;
@Value("${spring.datasource.druid.minIdle}")
private int minIdle;
@Value("${spring.datasource.druid.maxActive}")
private int maxActive;
@Value("${spring.datasource.druid.maxWait}")
private int maxWait;
@Value("${spring.datasource.druid.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${spring.datasource.druid.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${spring.datasource.druid.validationQuery}")
private String validationQuery;
@Value("${spring.datasource.druid.testWhileIdle}")
private boolean testWhileIdle;
@Value("${spring.datasource.druid.testOnBorrow}")
private boolean testOnBorrow;
@Value("${spring.datasource.druid.testOnReturn}")
private boolean testOnReturn;
@Value("${spring.datasource.encrypt}")
private boolean encrypt;
@Bean(name = "dataSource")
public DataSource dataSource(KeycenterUtils keycenterUtils) {
DruidDataSource datasource = new DruidDataSource();
datasource.setDriverClassName(driverClassName);
datasource.setUrl(dbUrl);
if (encrypt) {
datasource.setUsername(keycenterUtils.decrypt(username));
datasource.setPassword(keycenterUtils.decrypt(password));
} else {
datasource.setUsername(username);
datasource.setPassword(password);
}
datasource.setInitialSize(initialSize);
datasource.setMinIdle(minIdle);
datasource.setMaxActive(maxActive);
datasource.setMaxWait(maxWait);
datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setValidationQuery(validationQuery);
datasource.setTestWhileIdle(testWhileIdle);
datasource.setTestOnBorrow(testOnBorrow);
datasource.setTestOnReturn(testOnReturn);
return datasource;
}
} 2、資料庫字段加解密
2.1、 KeyCenterUtils
KeyCenterUtils
package com.healerjean.proj.config.keycenter.one;
import org.springframework.stereotype.Service;
import java.util.Base64;
/**
* @author HealerJean
* @ClassName AES
* @date 2020/4/9 14:28.
* @Description
*/
@Service
public class KeyCenterUtils {
/**
* 自己寫加密邏輯
*/
public String encrypt(String src) {
try {
String result = Base64.getEncoder().encodeToString(src.getBytes("UTF-8"));
return result;
} catch (Exception e) {
throw new RuntimeException("encrypt fail!", e);
}
}
/**
* 自己寫解密邏輯
*/
public String decrypt(String src) {
try {
byte[] asBytes = Base64.getDecoder().decode(src);
String result = new String(asBytes, "UTF-8");
return result;
} catch (Exception e) {
throw new RuntimeException("decrypt fail!", e);
}
}
} 2.2、 CustomTypeHandler
CustomTypeHandler
package com.healerjean.proj.config.keycenter.one;
/**
* @author HealerJean
* @ClassName AESTypeHandler
* @date 2020/4/9 14:27.
* @Description
*/
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.apache.commons.lang3.StringUtils;
import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class CustomTypeHandler<T> extends BaseTypeHandler<T> {
@Autowired
private KeyCenterUtils keyCenterUtils;
public CustomTypeHandler() {
}
@Override
public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
ps.setString(i, this.keyCenterUtils.encrypt((String)parameter));
}
@Override
public T getNullableResult(ResultSet rs, String columnName) throws SQLException {
String columnValue = rs.getString(columnName);
//有一些可能是空字元
return StringUtils.isBlank(columnValue) ? (T)columnValue : (T)this.keyCenterUtils.decrypt(columnValue);
}
@Override
public T getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
String columnValue = rs.getString(columnIndex);
return StringUtils.isBlank(columnValue) ? (T)columnValue : (T)this.keyCenterUtils.decrypt(columnValue);
}
@Override
public T getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
String columnValue = cs.getString(columnIndex);
return StringUtils.isBlank(columnValue) ? (T)columnValue : (T)this.keyCenterUtils.decrypt(columnValue);
}
} 2.3、Handle的使用
2.3.1、資料層實體類注解
package com.healerjean.proj.data.entity;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableName;
import com.healerjean.proj.config.keycenter.one.CustomTypeHandler;
import lombok.Data;
import java.util.Date;
@Data
@TableName(autoResultMap = true) //有了這個BaseMapper查詢的結果才能解密
public class User {
private Long id;
private String name;
private Integer age;
//有了這個資料庫BaseMapper插入的時候才能加密
@TableField(typeHandler = CustomTypeHandler.class)
private String telPhone;
@TableField(typeHandler = CustomTypeHandler.class)
private String email;
private Date createDate;
private Date createTime;
} 2.3.2、自定義sql查詢的配置
如果不是mybatisPlus的 BaseMapper内部的方法，則需要我們自己放入我們自定義的 typeHandler
@Results({
@Result(column = "email", property = "email", typeHandler = CustomTypeHandler.class),
@Result(column = "tel_phone", property = "telPhone", typeHandler = CustomTypeHandler.class)})
@Select("select * from user where id = #{id}")
List<User> selectDncryptList(Long id); 2.3.3、測試
User中的資料都是正常的 。不是密文。因為我們隻講入庫的資料設定了密文。并不會改變User對象本身
@Test
public void encrypt(){
List<User> users = null ;
//插入資料
User user = new User();
user.setName("name");
user.setAge(12);
user.setEmail("[email protected]");
user.setTelPhone("18841256");
userMapper.insert(user);
//更新
user.setEmail("[email protected]");
userMapper.updateById(user);
//查詢 ：清單查詢
users = userMapper.selectList(null);
System.out.println(users);
//查詢 ：根據Id查詢
User user1 = userMapper.selectById(user.getId());
System.out.println(user1);
//自定義sql查詢
users = userMapper.selectDncryptList(user.getId());
System.out.println(users);
} 2.4、敏感字段查詢：（需要精确查詢）
因為資料庫中是密文，是以查詢的時候，需要我們先加密後才能查
// 根據敏感字段查詢
Wrapper<User> userWrapper = new QueryWrapper<User>().lambda()
.select(User::getEmail)
.eq(User::getEmail, keyCenterUtils.encrypt("[email protected]"));
users = userMapper.selectList(userWrapper);
System.out.println(users); ![Java小案例——随機數猜測随機數猜測[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)