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,接着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data
try {
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
接着再次修改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
* 由於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();
}
}
接着,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==
接着再次更改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
* 由於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ENV
String 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 {
@Test
public void initSqlSessionFactory() {
}
@Test
public 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
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);
}
}
再次運行,可以發現已經成功執行sql語句
