1.配置MyBatisConfig.xml

<environments default="development"><!--        默认--><environment id="development"><transactionManager type="JDBC"/><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>

2.配置db.properties文件

单个文件配置

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://121.0.0.1:3306/stu
username=root
password=wHJ4MpJeWJndDqRhe/Fc4Q==

多个配置

development.driver=com.mysql.cj.jdbc.Driver
development.url=jdbc:mysql://121.0.0.1:3306/stu
development.username=root
development.password=wHJ4MpJeWJndDqRhe/Fc4Q==development1.driver=com.mysql.cj.jdbc.Driver
development1.url=jjdbc:mysql://121.0.0.1:3306/stu
development1.username=root
development1.password=wHJ4MpJeWJndDqRhe/Fc4Q==development2.driver=com.mysql.cj.jdbc.Driver
development2.url=jdbc:mysql://121.0.0.1:3306/stu
development2.username=root
development2.password=wHJ4MpJeWJndDqRhe/Fc4Q==

3.获取session

单个文件配置

public static SqlSession openSession(String resource) {SqlSessionFactory sqlSessionFactory = null;try {InputStream inputStream = Resources.getResourceAsStream("xml");Properties properties = Resources.getResourceAsProperties("properties");properties.setProperty("password", AESUtil.decrypt(properties.get("password")));sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream, properties);} catch (Exception e) {e.printStackTrace();log.error("默认数据库连接异常!!!");}return sqlSessionFactory.openSession();}

多个配置

 public static Map<String, SqlSession> openSessionOther(String resource){Map<String, SqlSession> sessionMap = new HashMap<>();try {InputStream inputStream = Resources.getResourceAsStream(resource);Map<String, Properties> map = parseProperties(resource);for (String key : map.keySet()) {Properties properties =map.get(key);properties.setProperty("password", AESUtil.decrypt(properties.get("password")));SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsStream(MYBATIS_CFG), properties);sessionMap.put(key, factory.openSession());}} catch (Exception e) {e.printStackTrace();log.error("其他数据库连接异常!!!");}return sessionMap;}public static Map<String, Properties> parseProperties(String resource) throws Exception{Map<String, Properties> map = new HashMap<>();Properties properties = Resources.getResourceAsProperties(resource);for (String key : properties.stringPropertyNames()) {String[] dataName = key.split("\\.");if (dataName.length == 2) {if(StringUtils.isNull(map.get(dataName[0]))) {map.put(dataName[0], new Properties());}}}for (Map.Entry<Object, Object> entry : properties.entrySet()) {System.out.println(entry.getKey() + "=" + entry.getValue());String[] dataName = String.valueOf(entry.getKey()).split("\\.");if (dataName.length == 2) {Properties p = map.get(dataName[0]);if (StringUtils.isNotNull(p)) {p.setProperty(dataName[1],String.valueOf(entry.getValue()));}}}return map;}

数据库加密文件 AES加密方式

package utils;import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;/*** @Description: 加密AES* @Author zhou* @Date 2024/5/29 - 14:38*/
public class AESUtil {public static final String sKey = "111;AAAA1234++==";/*** 加密* @param crypt 输入密码* @return 返回加密数据*/public static String encrypt(Object crypt){String sSrc = String.valueOf(crypt);byte[] raw = sKey.getBytes(StandardCharsets.UTF_8);SecretKeySpec sKeySpec = new SecretKeySpec(raw, "AES");Cipher cipher = null;//"算法/模式/补码方式"byte[] encrypted = new byte[0];try {cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");cipher.init(Cipher.ENCRYPT_MODE, sKeySpec);encrypted = cipher.doFinal(sSrc.getBytes(StandardCharsets.UTF_8));} catch (Exception e) {e.printStackTrace();}return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。}/*** 解密* @param crypt 需要解密的字符串* @return 解密后的数据*/public static String decrypt(Object crypt){String sSrc = String.valueOf(crypt);// 判断Key是否正确byte[] raw = sKey.getBytes(StandardCharsets.UTF_8);SecretKeySpec sKeySpec = new SecretKeySpec(raw, "AES");Cipher cipher = null;//"算法/模式/补码方式"byte[] original = new byte[0];try {cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");cipher.init(Cipher.DECRYPT_MODE, sKeySpec);byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密original = cipher.doFinal(encrypted1);} catch (Exception e) {e.printStackTrace();}return new String(original,StandardCharsets.UTF_8);}public static void main(String[] args) {// 需要加密的字串String cSrc = "123456";// 加密String enString = encrypt(cSrc);System.out.println("加密后的字串是：" + enString);// 解密String DeString = decrypt(enString);System.out.println("解密后的字串是：" + DeString);}
}