MyBatis 配置文件 用户密码加密存储

properties配置文件

一般是使用properties保存配置文件内容,然后在mybatis配置文件中进行读取
在resource文件下新建db.properties文件
内容如下

# 数据库配置文件
driver = com.mysql.cj.jdbc.Driver
url = jdbc:mysql://  /mybatis
username =  
password =   

然后,接着把文件放入源码包中
配置mybatis-config.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
		"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	<!-- 读取数据库配置文件 -->
	<properties resource="db.properties"/>
	<!-- 定义别名 -->
	<typeAliases>
		<typeAlias type="com.ming.Role" alias="role"/>
	</typeAliases>
	
	<!-- 自定义数据处理 -->
	<typeHandlers>
		<typeHandler handler="org.apache.ibatis.type.EnumOrdinalTypeHandler" javaType="com.ming.Sex"/>
	</typeHandlers>
	<!-- 定义数据库信息 -->
	<environments default="development">
		<environment id="development">
			<!-- jdbc事物管理 -->
			<transactionManager type="JDBC"/>
			<!-- 数据库链接信息 -->
			<dataSource type="POOLED">
				<property name="driver" value="${driver}"/>
				<property name="url" value="${url}"/>
				<property name="username" value="${username}"/>
				<property name="password" value="${password}"/>
			</dataSource>
		</environment>
	</environments>
	
	<mappers>
		<mapper resource="RoleMapper.xml"/>
	</mappers>
</configuration>

目录结构如下

数据库密码加密

生产环境的数据库密码都为加密密码,需要在使用的时候,把加密密码解密成为明文
先创建数据库密码类

package com.ming.Util;

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.security.*;
import java.util.Base64;

public class Decode {
    /**
     * 生成秘钥
     * @param
     * @return
     */
    public static String generateDecode() throws UnsupportedEncodingException {
        KeyGenerator keyGen = null;//密钥生成器
        try {
            keyGen = KeyGenerator.getInstance("DES");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        keyGen.init(56);//初始化密钥生成器
        SecretKey secretKey = keyGen.generateKey();//生成密钥
        byte[] key = secretKey.getEncoded();//密钥字节数组
        // 进行base64编码
        String encodedKey = Base64.getEncoder().encodeToString(key);
        return encodedKey;
    }

    /**
     * 进行加密
     * @param string
     * @param key
     * @return
     */
    public static String encryptionDecode(String string, String key){
        //System.out.println(System.getenv("KEYWORDES"));
        SecretKey secretKey = new SecretKeySpec(Base64.getDecoder().decode(key), "DES");//恢复密钥
        Cipher cipher = null;//Cipher完成加密或解密工作类
        try {
            cipher = Cipher.getInstance("DES");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        }
        try {
            cipher.init(Cipher.ENCRYPT_MODE, secretKey);//对Cipher初始化，加密模式
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
        byte[] cipherByte = null;
        try {
            cipherByte = cipher.doFinal(Base64.getDecoder().decode(string));//加密data
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return Base64.getEncoder().encodeToString(cipherByte);
    }

    public static String decryptDecode(String string, String key){
        SecretKey secretKey = new SecretKeySpec(Base64.getDecoder().decode(key), "DES");//恢复密钥
        Cipher cipher = null;//Cipher完成加密或解密工作类
        try {
            cipher = Cipher.getInstance("DES");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        }
        try {
            cipher.init(Cipher.DECRYPT_MODE, secretKey);//对Cipher初始化，解密模式
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
        byte[] cipherByte = new byte[0];//解密data
        try {
            cipherByte = cipher.doFinal(Base64.getDecoder().decode(string));
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return Base64.getEncoder().encodeToString(cipherByte);
    }
}

该类有三个方法,为加密data,解密data,生成key
然后编辑操作系统环境变量
达到输入

➜  ~ echo $KEYWORDES

可以输出环境变量
接着再次修改SqlSessionFactoryUtil类

package com.ming.Util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Properties;

/**
 * @author ming
 * 构建SqlSessionFactory
 * 由于数据库连接是宝贵的,需要对数据库连接统一管理,所以使用单例进行管理
 * 这里的单利使用的双重锁
 * SqlSessionFactory为线程不安全类型需要加锁,确保同一时刻,只有一个线程可以使用该对象
 */
public class SqlSessionFactoryUtil {

    /**
     * SqlSessionFactory对象
     */
    private static SqlSessionFactory sqlSessionFactory = null;

    /**
     * 类线程锁
     */
    private static final Class CLASS_LOCK = SqlSessionFactoryUtil.class;

    /**
     * 日志管理类
     */
    private static final Logger logger = LogManager.getLogger();
    /**
     * 单例
     */
    private SqlSessionFactoryUtil(){

    }

    /**
     * @return SqlSessionFactory
     * 初始化SqlSessionFactory对象
     */
    public static SqlSessionFactory initSqlSessionFactory(){
       // 获得输入流
       InputStream cfgStream = null;
       // 阅读流
       Reader cfgReader = null;
       InputStream proStream = null;
       Reader proReader = null;
       // 持久化属性集
       Properties properties = null;
       try{
           // 配置文件流
           cfgStream = Resources.getResourceAsStream("mybatis-config.xml");
           // 获得阅读流
           cfgReader = new InputStreamReader(cfgStream);
           // 读入属性文件
           proStream = Resources.getResourceAsStream("db.properties");
           proReader = new InputStreamReader(proStream);
           // 持久化属性集
           properties = new Properties();
           // 流转载进入属性集合
           properties.load(proReader);
       }catch (Exception e){
           logger.error(e);
       }

       if(sqlSessionFactory == null){
           synchronized (CLASS_LOCK){
               sqlSessionFactory = new SqlSessionFactoryBuilder().build(cfgReader, properties);
           }
       }
       return sqlSessionFactory;
    }

    /**
     * 打开SqlSession
     * @return SqlSession
     */
    public static SqlSession openSqlSesion(){
        // 判空处理
        if(sqlSessionFactory == null){
            initSqlSessionFactory();
        }
        return sqlSessionFactory.openSession();
    }
}

接着,再次对密码进行加密,在读取的时候,对阅读流的结果集进行持久化设置
先对db.properties数据库密码进行加密
更改以后配置文件如下

# 数据库配置文件
driver = com.mysql.cj.jdbc.Driver
url = jdbc:mysql://47.94.95.84:32786/mybatis
username = mybatis
password = 8GgwaJCtTXLGItiYF9c4mg==

接着再次更改Util类

package com.ming.Util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;


import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Properties;

/**
 * @author ming
 * 构建SqlSessionFactory
 * 由于数据库连接是宝贵的,需要对数据库连接统一管理,所以使用单例进行管理
 * 这里的单利使用的双重锁
 * SqlSessionFactory为线程不安全类型需要加锁,确保同一时刻,只有一个线程可以使用该对象
 */
public class SqlSessionFactoryUtil {

    /**
     * SqlSessionFactory对象
     */
    private static SqlSessionFactory sqlSessionFactory = null;

    /**
     * 类线程锁
     */
    private static final Class CLASS_LOCK = SqlSessionFactoryUtil.class;

    /**
     * 日志管理类
     */
    private static final Logger logger = LogManager.getLogger();
    /**
     * 单例
     */
    private SqlSessionFactoryUtil(){

    }

    /**
     * @return SqlSessionFactory
     * 初始化SqlSessionFactory对象
     */
    public static SqlSessionFactory initSqlSessionFactory(){
       // 获得输入流
       InputStream cfgStream = null;
       // 阅读流
       Reader cfgReader = null;
       InputStream proStream = null;
       Reader proReader = null;
       // 持久化属性集
       Properties properties = null;
       try{
           // 配置文件流
           cfgStream = Resources.getResourceAsStream("mybatis-config.xml");
           // 获得阅读流
           cfgReader = new InputStreamReader(cfgStream);
           // 读入属性文件
           proStream = Resources.getResourceAsStream("db.properties");
           proReader = new InputStreamReader(proStream);
           // 持久化属性集
           properties = new Properties();
           // 流装载进入属性集合
           properties.load(proReader);
           // 获取当前系统ENV
           String key = System.getenv("KEYWORDES");
           // 进行解密
           properties.setProperty("password", Decode.decryptDecode(properties.getProperty("password"), key));
       }catch (Exception e){
           logger.error(e);
       }

       if(sqlSessionFactory == null){
           synchronized (CLASS_LOCK){
               sqlSessionFactory = new SqlSessionFactoryBuilder().build(cfgReader, properties);
           }
       }
       return sqlSessionFactory;
    }

    /**
     * 打开SqlSession
     * @return SqlSession
     */
    public static SqlSession openSqlSesion(){
        // 判空处理
        if(sqlSessionFactory == null){
            initSqlSessionFactory();
        }
        return sqlSessionFactory.openSession();
    }
}

书写单元测试

package com.ming.Util;

import org.junit.Test;

import static org.junit.Assert.*;

public class SqlSessionFactoryUtilTest {

    @Test
    public void initSqlSessionFactory() {
    }

    @Test
    public void openSqlSesion() {
        SqlSessionFactoryUtil.openSqlSesion();
    }
}

目前的目录结构

此时执行单元测试,可以发现单元测试已经通过
控制台打印出log信息

2019-04-11 17:17:37.357 [DEBUG] org.apache.ibatis.logging.LogFactory.setImplementation(LogFactory.java:105) - Logging initialized using 'class org.apache.ibatis.logging.log4j2.Log4j2Impl' adapter.
2019-04-11 17:17:37.403 [DEBUG] org.apache.ibatis.datasource.pooled.PooledDataSource.forceCloseAll(PooledDataSource.java:334) - PooledDataSource forcefully closed/removed all connections.
2019-04-11 17:17:37.403 [DEBUG] org.apache.ibatis.datasource.pooled.PooledDataSource.forceCloseAll(PooledDataSource.java:334) - PooledDataSource forcefully closed/removed all connections.
2019-04-11 17:17:37.404 [DEBUG] org.apache.ibatis.datasource.pooled.PooledDataSource.forceCloseAll(PooledDataSource.java:334) - PooledDataSource forcefully closed/removed all connections.
2019-04-11 17:17:37.404 [DEBUG] org.apache.ibatis.datasource.pooled.PooledDataSource.forceCloseAll(PooledDataSource.java:334) - PooledDataSource forcefully closed/removed all connections.

Process finished with exit code 0

发现错误,修改加密类

package com.ming.Util;

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.security.*;
import java.util.Base64;

public class Decode {
    /**
     * 生成秘钥
     * @param
     * @return
     */
    public static String generateDecode() throws UnsupportedEncodingException {
        KeyGenerator keyGen = null;//密钥生成器
        try {
            keyGen = KeyGenerator.getInstance("DES");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        keyGen.init(56);//初始化密钥生成器
        SecretKey secretKey = keyGen.generateKey();//生成密钥
        byte[] key = secretKey.getEncoded();//密钥字节数组
        // 进行base64编码
        String encodedKey = Base64.getEncoder().encodeToString(key);
        return encodedKey;
    }

    /**
     * 进行加密
     * @param string
     * @param key
     * @return
     */
    public static String encryptionDecode(String string, String key){
        SecretKey secretKey = new SecretKeySpec(Base64.getDecoder().decode(key), "DES");//恢复密钥
        Cipher cipher = null;//Cipher完成加密或解密工作类
        try {
            cipher = Cipher.getInstance("DES");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        }
        try {
            cipher.init(Cipher.ENCRYPT_MODE, secretKey);//对Cipher初始化，加密模式
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
        byte[] cipherByte = null;
        try {
            cipherByte = cipher.doFinal(string.getBytes());//加密data
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return Base64.getEncoder().encodeToString(cipherByte);
    }

    /**
     * 进行解密
     * @param string
     * @param key
     * @return
     */
    public static String decryptDecode(String string, String key){
        SecretKey secretKey = new SecretKeySpec(Base64.getDecoder().decode(key), "DES");//恢复密钥
        Cipher cipher = null;//Cipher完成加密或解密工作类
        try {
            cipher = Cipher.getInstance("DES");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        }
        try {
            cipher.init(Cipher.DECRYPT_MODE, secretKey);//对Cipher初始化，解密模式
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
        byte[] cipherByte = new byte[0];//解密data
        try {
            cipherByte = cipher.doFinal(Base64.getDecoder().decode(string));
        } catch (IllegalBlockSizeException e) {
            e.printStackTrace();
        } catch (BadPaddingException e) {
            e.printStackTrace();
        }
        return new String(cipherByte);
    }
}

再次运行,可以发现已经成功执行sql语句