properties配置文件
一般是使用properties保存配置文件內容,然后在mybatis配置文件中進行讀取
在resource文件下新建db.properties文件
內容如下
# 數據庫配置文件
driver = com.mysql.cj.jdbc.Driver
url = jdbc:mysql:// /mybatis
username =
password =
然后,接著把文件放入源碼包中
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><!-- 讀取數據庫配置文件 --><properties resource="db.properties"/><!-- 定義別名 --><typeAliases><typeAlias type="com.ming.Role" alias="role"/></typeAliases><!-- 自定義數據處理 --><typeHandlers><typeHandler handler="org.apache.ibatis.type.EnumOrdinalTypeHandler" javaType="com.ming.Sex"/></typeHandlers><!-- 定義數據庫信息 --><environments default="development"><environment id="development"><!-- jdbc事物管理 --><transactionManager type="JDBC"/><!-- 數據庫鏈接信息 --><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>
目錄結構如下
數據庫密碼加密
生產環境的數據庫密碼都為加密密碼,需要在使用的時候,把加密密碼解密成為明文
先創建數據庫密碼類
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 {/*** 生成秘鑰* @param* @return*/public static String generateDecode() throws UnsupportedEncodingException {KeyGenerator keyGen = null;//密鑰生成器try {keyGen = KeyGenerator.getInstance("DES");} catch (NoSuchAlgorithmException e) {e.printStackTrace();}keyGen.init(56);//初始化密鑰生成器SecretKey secretKey = keyGen.generateKey();//生成密鑰byte[] key = secretKey.getEncoded();//密鑰字節數組// 進行base64編碼String encodedKey = Base64.getEncoder().encodeToString(key);return encodedKey;}/*** 進行加密* @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");//恢復密鑰Cipher cipher = null;//Cipher完成加密或解密工作類try {cipher = Cipher.getInstance("DES");} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();}try {cipher.init(Cipher.ENCRYPT_MODE, secretKey);//對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");//恢復密鑰Cipher cipher = null;//Cipher完成加密或解密工作類try {cipher = Cipher.getInstance("DES");} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();}try {cipher.init(Cipher.DECRYPT_MODE, secretKey);//對Cipher初始化，解密模式} catch (InvalidKeyException e) {e.printStackTrace();}byte[] cipherByte = new byte[0];//解密datatry {cipherByte = cipher.doFinal(Base64.getDecoder().decode(string));} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}return Base64.getEncoder().encodeToString(cipherByte);}
}
該類有三個方法,為加密data,解密data,生成key
然后編輯操作系統環境變量
達到輸入
? ~ echo $KEYWORDES
可以輸出環境變量
接著再次修改SqlSessionFactoryUtil類
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* 構建SqlSessionFactory* 由于數據庫連接是寶貴的,需要對數據庫連接統一管理,所以使用單例進行管理* 這里的單利使用的雙重鎖* SqlSessionFactory為線程不安全類型需要加鎖,確保同一時刻,只有一個線程可以使用該對象*/
public class SqlSessionFactoryUtil {/*** SqlSessionFactory對象*/private static SqlSessionFactory sqlSessionFactory = null;/*** 類線程鎖*/private static final Class CLASS_LOCK = SqlSessionFactoryUtil.class;/*** 日志管理類*/private static final Logger logger = LogManager.getLogger();/*** 單例*/private SqlSessionFactoryUtil(){}/*** @return SqlSessionFactory* 初始化SqlSessionFactory對象*/public static SqlSessionFactory initSqlSessionFactory(){// 獲得輸入流InputStream cfgStream = null;// 閱讀流Reader cfgReader = null;InputStream proStream = null;Reader proReader = null;// 持久化屬性集Properties properties = null;try{// 配置文件流cfgStream = Resources.getResourceAsStream("mybatis-config.xml");// 獲得閱讀流cfgReader = new InputStreamReader(cfgStream);// 讀入屬性文件proStream = Resources.getResourceAsStream("db.properties");proReader = new InputStreamReader(proStream);// 持久化屬性集properties = new Properties();// 流轉載進入屬性集合properties.load(proReader);}catch (Exception e){logger.error(e);}if(sqlSessionFactory == null){synchronized (CLASS_LOCK){sqlSessionFactory = new SqlSessionFactoryBuilder().build(cfgReader, properties);}}return sqlSessionFactory;}/*** 打開SqlSession* @return SqlSession*/public static SqlSession openSqlSesion(){// 判空處理if(sqlSessionFactory == null){initSqlSessionFactory();}return sqlSessionFactory.openSession();}
}
接著,再次對密碼進行加密,在讀取的時候,對閱讀流的結果集進行持久化設置
先對db.properties數據庫密碼進行加密
更改以后配置文件如下
# 數據庫配置文件
driver = com.mysql.cj.jdbc.Driver
url = jdbc:mysql://47.94.95.84:32786/mybatis
username = mybatis
password = 8GgwaJCtTXLGItiYF9c4mg==
接著再次更改Util類
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* 構建SqlSessionFactory* 由于數據庫連接是寶貴的,需要對數據庫連接統一管理,所以使用單例進行管理* 這里的單利使用的雙重鎖* SqlSessionFactory為線程不安全類型需要加鎖,確保同一時刻,只有一個線程可以使用該對象*/
public class SqlSessionFactoryUtil {/*** SqlSessionFactory對象*/private static SqlSessionFactory sqlSessionFactory = null;/*** 類線程鎖*/private static final Class CLASS_LOCK = SqlSessionFactoryUtil.class;/*** 日志管理類*/private static final Logger logger = LogManager.getLogger();/*** 單例*/private SqlSessionFactoryUtil(){}/*** @return SqlSessionFactory* 初始化SqlSessionFactory對象*/public static SqlSessionFactory initSqlSessionFactory(){// 獲得輸入流InputStream cfgStream = null;// 閱讀流Reader cfgReader = null;InputStream proStream = null;Reader proReader = null;// 持久化屬性集Properties properties = null;try{// 配置文件流cfgStream = Resources.getResourceAsStream("mybatis-config.xml");// 獲得閱讀流cfgReader = new InputStreamReader(cfgStream);// 讀入屬性文件proStream = Resources.getResourceAsStream("db.properties");proReader = new InputStreamReader(proStream);// 持久化屬性集properties = new Properties();// 流裝載進入屬性集合properties.load(proReader);// 獲取當前系統ENVString key = System.getenv("KEYWORDES");// 進行解密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;}/*** 打開SqlSession* @return SqlSession*/public static SqlSession openSqlSesion(){// 判空處理if(sqlSessionFactory == null){initSqlSessionFactory();}return sqlSessionFactory.openSession();}
}
書寫單元測試
package com.ming.Util;import org.junit.Test;import static org.junit.Assert.*;public class SqlSessionFactoryUtilTest {@Testpublic void initSqlSessionFactory() {}@Testpublic void openSqlSesion() {SqlSessionFactoryUtil.openSqlSesion();}
}
目前的目錄結構
此時執行單元測試,可以發現單元測試已經通過
控制臺打印出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
發現錯誤,修改加密類
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 {/*** 生成秘鑰* @param* @return*/public static String generateDecode() throws UnsupportedEncodingException {KeyGenerator keyGen = null;//密鑰生成器try {keyGen = KeyGenerator.getInstance("DES");} catch (NoSuchAlgorithmException e) {e.printStackTrace();}keyGen.init(56);//初始化密鑰生成器SecretKey secretKey = keyGen.generateKey();//生成密鑰byte[] key = secretKey.getEncoded();//密鑰字節數組// 進行base64編碼String encodedKey = Base64.getEncoder().encodeToString(key);return encodedKey;}/*** 進行加密* @param string* @param key* @return*/public static String encryptionDecode(String string, String key){SecretKey secretKey = new SecretKeySpec(Base64.getDecoder().decode(key), "DES");//恢復密鑰Cipher cipher = null;//Cipher完成加密或解密工作類try {cipher = Cipher.getInstance("DES");} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();}try {cipher.init(Cipher.ENCRYPT_MODE, secretKey);//對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);}/*** 進行解密* @param string* @param key* @return*/public static String decryptDecode(String string, String key){SecretKey secretKey = new SecretKeySpec(Base64.getDecoder().decode(key), "DES");//恢復密鑰Cipher cipher = null;//Cipher完成加密或解密工作類try {cipher = Cipher.getInstance("DES");} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();}try {cipher.init(Cipher.DECRYPT_MODE, secretKey);//對Cipher初始化，解密模式} catch (InvalidKeyException e) {e.printStackTrace();}byte[] cipherByte = new byte[0];//解密datatry {cipherByte = cipher.doFinal(Base64.getDecoder().decode(string));} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}return new String(cipherByte);}
}
再次運行,可以發現已經成功執行sql語句
總結
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