在spring-config文件中對jdbc數據配置進行加密處理

步驟：

1. 建立加密、解密工具類：

package com.hsoft.framework.util;
import java.security.Security;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
/**
* 加密解密工具類
*
* @author dwb
*
*/
public class Des {
     private static final String Algorithm = "DES"; // 定義 加密算法,可用
                                                                 // DES,DESede,Blowfish
     // src爲被加密的數據緩衝區（源）
     public static byte[] encryptMode(byte[] keybyte, byte[] src) {
          try {
               // 生成密鑰
               SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
               // 加密
               Cipher c1 = Cipher.getInstance(Algorithm);
               c1.init(Cipher.ENCRYPT_MODE, deskey);
               return c1.doFinal(src);
          } catch (java.security.NoSuchAlgorithmException e1) {
               e1.printStackTrace();
          } catch (javax.crypto.NoSuchPaddingException e2) {
               e2.printStackTrace();
          } catch (java.lang.Exception e3) {
               e3.printStackTrace();
          }
          return null;
     }
     // keybyte爲加密密鑰，長度爲24字節
     // src爲加密後的緩衝區
     public static byte[] decryptMode(byte[] keybyte, byte[] src) {
          try {
               // 生成密鑰
               SecretKey deskey = new SecretKeySpec(keybyte, Algorithm);
               // 解密
               Cipher c1 = Cipher.getInstance(Algorithm);
               c1.init(Cipher.DECRYPT_MODE, deskey);
               return c1.doFinal(src);
          } catch (java.security.NoSuchAlgorithmException e1) {
               e1.printStackTrace();
          } catch (javax.crypto.NoSuchPaddingException e2) {
               e2.printStackTrace();
          } catch (java.lang.Exception e3) {
               e3.printStackTrace();
          }
          return null;
     }
     // 轉換成十六進制字符串
     public static String byte2hex(byte[] b) {
          String hs = "";
          String stmp = "";
          for (int n = 0; n < b.length; n++) {
               stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
               if (stmp.length() == 1)
                    hs = hs + "0" + stmp;
               else
                    hs = hs + stmp;
               if (n < b.length - 1)
                    hs = hs + "";
          }
          return hs.toUpperCase();
     }
     // 16 進制 轉 2 進制
     public static byte[] hex2byte(String hex) throws IllegalArgumentException {
          if (hex.length() % 2 != 0) {
               throw new IllegalArgumentException();
          }
          char[] arr = hex.toCharArray();
          byte[] b = new byte[hex.length() / 2];
          for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {
               String swap = "" + arr[i++] + arr[i];
               int byteint = Integer.parseInt(swap, 16) & 0xFF;
               b[j] = new Integer(byteint).byteValue();
          }
          return b;
     }
     private static byte[] hex2byte(byte[] b) {
          if ((b.length % 2) != 0)
               throw new IllegalArgumentException("長度不是偶數");
          byte[] b2 = new byte[b.length / 2];
          for (int n = 0; n < b.length; n += 2) {
               String item = new String(b, n, 2);
               b2[n / 2] = (byte) Integer.parseInt(item, 16);
          }
          return b2;
     }
     // 加密
     public static String Encrypt(String str, byte[] key) {
          Security.addProvider(new com.sun.crypto.provider.SunJCE());
          byte[] encrypt = encryptMode(key, str.getBytes());
          return byte2hex(encrypt);
     }
     // 加密
     public static byte[] EncryptRetByte(byte[] src, byte[] key) {
          Security.addProvider(new com.sun.crypto.provider.SunJCE());
          byte[] encrypt = encryptMode(key, src);
          return encrypt;
     }
     // 解密
     public static String Decrypt(String str, byte[] key) {
          Security.addProvider(new com.sun.crypto.provider.SunJCE());
          byte[] decrypt = decryptMode(key, hex2byte(str));
          return new String(decrypt);
     }
     public static void main(String arg[]) {
          String str = "q1w2e3r4t5";//要加密的信息
          String strKey = "0002000200020002";
          String s3 = Encrypt(str, hex2byte(strKey));//加密
          String s4 = Decrypt(s3, hex2byte(strKey));//解密
          System.out.println("加密後的信息     "+s3);
          System.out.println("解密後的信息     "+s4);
     }
}

2.建立解析properties文件 並對系統進行配置：

package com.hsoft.framework.util;
import java.util.Properties;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanInitializationException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
/**
* 解析properties文件 並對系統進行配置
*
* @author dwb
*
*/
public class EncryptablePropertyPlaceholderConfigurer extends
          PropertyPlaceholderConfigurer {
     private static final String key = "0002000200020002";
     protected void processProperties(
               ConfigurableListableBeanFactory beanFactory, Properties props)
               throws BeansException {
          System.out
                    .println("正在解密系統文件...");
          try {
               Des des = new Des();
               // rk----------------------
               String rkUserName = props.getProperty("rk.jdbc.username");
               if (rkUserName != null) {
                    String usernameVal = des.Decrypt(rkUserName, des.hex2byte(key));
                    props.setProperty("rk.jdbc.username", usernameVal);
               }
               String rkPassword = props.getProperty("rk.jdbc.password");
               if (rkPassword != null) {
                    String passwordVal = des.Decrypt(rkPassword, des.hex2byte(key));
                    props.setProperty("rk.jdbc.password", passwordVal);
               }
               String rkUrl = props.getProperty("rk.jdbc.url");
               if (rkUrl != null) {
                    String urlVal = des.Decrypt(rkUrl, des.hex2byte(key));
                    props.setProperty("rk.jdbc.url", urlVal);
               }
               String rkDriverClassName = props
                         .getProperty("rk.jdbc.driverClassName");
               if (rkDriverClassName != null) {
                    String driverClassNameVal = des.Decrypt(rkDriverClassName,
                              des.hex2byte(key));
                    props.setProperty("rk.jdbc.driverClassName", driverClassNameVal);
               }
               // temp----------------------
               String usernameTemp = props.getProperty("temp.jdbc.username");
               if (usernameTemp != null) {
                    String usernameVal = des.Decrypt(usernameTemp,
                              des.hex2byte(key));
                    props.setProperty("temp.jdbc.username", usernameVal);
               }
               String passwordTemp = props.getProperty("temp.jdbc.password");
               if (passwordTemp != null) {
                    String passwordVal = des.Decrypt(passwordTemp,
                              des.hex2byte(key));
                    props.setProperty("temp.jdbc.password", passwordVal);
               }
               String urlTemp = props.getProperty("temp.jdbc.url");
               if (urlTemp != null) {
                    String urlVal = des.Decrypt(urlTemp, des.hex2byte(key));
                    props.setProperty("temp.jdbc.url", urlVal);
               }
               String driverClassNameTemp = props
                         .getProperty("temp.jdbc.driverClassName");
               if (driverClassNameTemp != null) {
                    String driverClassNameVal = des.Decrypt(driverClassNameTemp,
                              des.hex2byte(key));
                    props.setProperty("temp.jdbc.driverClassName", driverClassNameVal);
               }
               super.processProperties(beanFactory, props);
          } catch (Exception e) {
               e.printStackTrace();
               throw new BeanInitializationException(e.getMessage());
          }
     }
}

3.編寫properties文件：

jdbc-test.properties

rk.jdbc.driverClassName = 1F4BC23080

rk.jdbc.url = B7766E9B37

rk.jdbc.username = D3

rk.jdbc.password = 6A285

temp.jdbc.driverClassName = 1F4BC

temp.jdbc.url = B7766E9B37CA2C3F656A72

temp.jdbc.username = D328B

temp.jdbc.password = 6A285EC2

4.修改spring-configuration.xml文件

<?xml version="1.0" encoding="GBK"?>
<beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd  
                            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd  
                            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
     <bean id="propertyConfigurer"
          class="com.hsoft.framework.util.EncryptablePropertyPlaceholderConfigurer">
          <property name="locations">
               <list>
                    <value>classpath:jdbc-test.properties</value>
               </list>
          </property>
     </bean>
     <!-- 建立數據源與數據庫連接 -->
     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
          destroy-method="close">
          <!-- mysql鏈接 --> 
         <!-- 如下是調用加密後的方式-->
<property name="driverClass">                <value>${rk.jdbc.driverClassName}</value>           </property>           <property name="jdbcUrl">                <value>${rk.jdbc.url}</value>           </property>           <property name="user">                <value>${rk.jdbc.username}</value>           </property>           <property name="password">                <value>${rk.jdbc.password}</value>           </property>           <property name="initialPoolSize">                <value>5</value>           </property>           <property name="maxPoolSize">                <value>10</value>           </property>           <property name="minPoolSize">                <value>5</value>           </property>           <property name="acquireIncrement">                <value>5</value>           </property>           <property name="acquireRetryAttempts">                <value>30</value>           </property>           <property name="acquireRetryDelay">                <value>1000</value>           </property>           <property name="testConnectionOnCheckin">                <value>true</value>           </property>           <property name="idleConnectionTestPeriod">                <value>18000</value>           </property>           <property name="maxIdleTime">                <value>25200</value>           </property>           <property name="preferredTestQuery">                <value>SELECT 1</value>           </property>      </bean>      <!-- 事務管理 -->      <bean id="transactionManager"           class="org.springframework.jdbc.datasource.DataSourceTransactionManager">           <property name="dataSource">                <ref local="dataSource" />           </property>      </bean>      <!-- 配置 JDBC模板 -->      <bean id="jdbcTemplate" class="com.hsoft.framework.util.FrmJdbcTemplate">           <property name="dataSource">                <ref bean="dataSource" />           </property>      </bean>      <!-- 配置事務的傳播性 -->      <tx:advice id="txAdvice" transaction-manager="transactionManager">           <tx:attributes>                <tx:method name="save*" propagation="REQUIRED" />                <tx:method name="update*" propagation="REQUIRED" />                <tx:method name="del*" propagation="REQUIRED" />                <tx:method name="remove*" propagation="REQUIRED" />                <!--修改成false -->                <tx:method name="*" read-only="false" />           </tx:attributes>      </tx:advice>      <!-- 配置哪些類的哪些方法參與事務 -->      <aop:config>           <aop:pointcut id="allServiceMethod"                expression="execution(* com.hsoft.framework.service.impl.*.*(..))" />           <aop:pointcut id="allServiceMethodMsptMethod"                expression="execution(* com.hsoft.mspt.*.service.impl.*.*(..))" />           <aop:pointcut id="allToolsDaoJdbcMethod"                expression="execution(* com.hsoft.framework.dao.IToolsDaoJdbc.*(..))" />           <aop:advisor pointcut-ref="allServiceMethod" advice-ref="txAdvice" />           <aop:advisor pointcut-ref="allServiceMethodMsptMethod"                advice-ref="txAdvice" />           <aop:advisor pointcut-ref="allToolsDaoJdbcMethod"                advice-ref="txAdvice" />      </aop:config>      <!-- temp -->      <bean id="dataSourceTemp" class="com.mchange.v2.c3p0.ComboPooledDataSource"           destroy-method="close">           <!-- mysql鏈接 -->            <property name="driverClass">                <value>${temp.jdbc.driverClassName}</value>           </property>           <property name="jdbcUrl">                <value>${temp.jdbc.url}</value>           </property>           <property name="user">                <value>${temp.jdbc.username}</value>           </property>           <property name="password">                <value>${temp.jdbc.password}</value>           </property>           <property name="initialPoolSize">                <value>5</value>           </property>           <property name="maxPoolSize">                <value>10</value>           </property>           <property name="minPoolSize">                <value>5</value>           </property>           <property name="acquireIncrement">                <value>5</value>           </property>           <property name="acquireRetryAttempts">                <value>30</value>           </property>           <property name="acquireRetryDelay">                <value>1000</value>           </property>           <property name="testConnectionOnCheckin">                <value>true</value>           </property>           <property name="idleConnectionTestPeriod">                <value>18000</value>           </property>           <property name="maxIdleTime">                <value>25200</value>           </property>           <property name="preferredTestQuery">                <value>SELECT 1</value>           </property>      </bean>      <!-- 事務管理 -->      <bean id="transactionManagerTemp"           class="org.springframework.jdbc.datasource.DataSourceTransactionManager">           <property name="dataSource">                <ref local="dataSourceTemp" />           </property>      </bean>      <!-- 配置 JDBC模板 -->      <bean id="jdbcTemplateTemp" class="com.hsoft.framework.util.FrmJdbcTemplateTemp">           <property name="dataSource">                <ref bean="dataSourceTemp" />           </property>      </bean>      <!-- 配置事務的傳播性 -->      <tx:advice id="txAdviceTemp" transaction-manager="transactionManager">           <tx:attributes>                <tx:method name="save*" propagation="REQUIRED" />                <tx:method name="update*" propagation="REQUIRED" />                <tx:method name="del*" propagation="REQUIRED" />                <tx:method name="remove*" propagation="REQUIRED" />                <!--修改成false -->                <tx:method name="*" read-only="false" />           </tx:attributes>      </tx:advice>      <!-- 配置哪些類的哪些方法參與事務 -->      <aop:config>           <aop:pointcut id="allServiceMethodTemp"                expression="execution(* com.hsoft.framework.service.impl.*.*(..))" />           <aop:pointcut id="allServiceMethodMsptMethodTemp"                expression="execution(* com.hsoft.mspt.*.service.impl.*.*(..))" />           <aop:pointcut id="allToolsDaoJdbcMethodTemp"                expression="execution(* com.hsoft.framework.dao.IToolsDaoJdbc.*(..))" />           <aop:advisor pointcut-ref="allServiceMethod" advice-ref="txAdvice" />           <aop:advisor pointcut-ref="allServiceMethodMsptMethod"                advice-ref="txAdvice" />           <aop:advisor pointcut-ref="allToolsDaoJdbcMethod"                advice-ref="txAdvice" />      </aop:config> </beans>