java spring中对properties属性文件加密及其解密

加密类:

package com.framework.commons.util;    import java.io.ByteArrayInputStream;  import java.io.ByteArrayOutputStream;  import java.io.File;  import java.io.FileInputStream;  import java.io.FileOutputStream;  import java.io.InputStream;  import java.io.ObjectInputStream;  import java.io.ObjectOutputStream;  import java.security.Key;  import java.security.NoSuchAlgorithmException;  import java.security.SecureRandom;  import java.security.Security;    import javax.crypto.Cipher;  import javax.crypto.KeyGenerator;    /**   * <ul>   * <li>Title:[DESEncryptUtil]</li>   * <li>Description: [加密码解密类]</li>   * <li>Copyright 2009 RoadWay Co., Ltd.</li>   * <li>All right reserved.</li>   * <li>Created by [Huyvanpull] [Jul 19, 2010]</li>   * <li>Midified by [修改人] [修改时间]</li>   * </ul>   *    * @version 1.0   */  public class DESEncryptUtil  {      public static void main(String[] args) throws Exception      {          /** 生成KEY */          String operatorType = "key";          String keyFilePath = "D:/key.k";          DESEncryptUtil.test(keyFilePath, null, operatorType);                    /** 加密 */          operatorType = "encrypt";          String sourceFilePath = "D:/jdbc_official.properties";          DESEncryptUtil.test(keyFilePath, sourceFilePath, operatorType);                    /** 解密 */          operatorType = "decrypt";          sourceFilePath = "D:/en_jdbc_official.properties";          DESEncryptUtil.test(keyFilePath, sourceFilePath, operatorType);      }      /**       * <ul>       * <li>Description:[创建一个密钥]</li>       * <li>Created by [Huyvanpull] [Jul 19, 2010]</li>       * <li>Midified by [修改人] [修改时间]</li>       * </ul>       *        * @return       * @throws NoSuchAlgorithmException       */      public static Key createKey() throws NoSuchAlgorithmException      {          Security.insertProviderAt(new com.sun.crypto.provider.SunJCE(), 1);          KeyGenerator generator = KeyGenerator.getInstance("DES");          generator.init(new SecureRandom());          Key key = generator.generateKey();          return key;      }            /**       * <ul>       * <li>Description:[根据流得到密钥]</li>       * <li>Created by [Huyvanpull] [Jul 19, 2010]</li>       * <li>Midified by [修改人] [修改时间]</li>       * </ul>       *        * @param is       * @return       */      public static Key getKey(InputStream is)      {          try          {              ObjectInputStream ois = new ObjectInputStream(is);              return (Key) ois.readObject();          }          catch (Exception e)          {              e.printStackTrace();              throw new RuntimeException(e);          }      }            /**       * <ul>       * <li>Description:[对数据进行加密]</li>       * <li>Created by [Huyvanpull] [Jul 19, 2010]</li>       * <li>Midified by [修改人] [修改时间]</li>       * </ul>       *        * @param key       * @param data       * @return       */      private static byte[] doEncrypt(Key key, byte[] data)      {          try          {              Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");              cipher.init(Cipher.ENCRYPT_MODE, key);              byte[] raw = cipher.doFinal(data);              return raw;          }          catch (Exception e)          {              e.printStackTrace();              throw new RuntimeException(e);          }      }            /**       * <ul>       * <li>Description:[对数据进行解密]</li>       * <li>Created by [Huyvanpull] [Jul 19, 2010]</li>       * <li>Midified by [修改人] [修改时间]</li>       * </ul>       *        * @param key       * @param in       * @return       */      public static InputStream doDecrypt(Key key, InputStream in)      {          try          {              Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");              cipher.init(Cipher.DECRYPT_MODE, key);              ByteArrayOutputStream bout = new ByteArrayOutputStream();              byte[] tmpbuf = new byte[1024];              int count = 0;              while ((count = in.read(tmpbuf)) != -1)              {                  bout.write(tmpbuf, 0, count);                  tmpbuf = new byte[1024];              }              in.close();              byte[] orgData = bout.toByteArray();              byte[] raw = cipher.doFinal(orgData);              ByteArrayInputStream bin = new ByteArrayInputStream(raw);              return bin;          }          catch (Exception e)          {              e.printStackTrace();              throw new RuntimeException(e);          }      }            private static void test(String keyFilePath, String sourceFilePath,              String operatorType) throws Exception      {          // 提供了Java命令使用该工具的功能          if (operatorType.equalsIgnoreCase("key"))          {              // 生成密钥文件              Key key = DESEncryptUtil.createKey();              ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(keyFilePath));              oos.writeObject(key);              oos.close();              System.out.println("成功生成密钥文件" + keyFilePath);          }          else if (operatorType.equalsIgnoreCase("encrypt"))          {              // 对文件进行加密              File file = new File(sourceFilePath);              FileInputStream in = new FileInputStream(file);              ByteArrayOutputStream bout = new ByteArrayOutputStream();              byte[] tmpbuf = new byte[1024];              int count = 0;              while ((count = in.read(tmpbuf)) != -1)              {                  bout.write(tmpbuf, 0, count);                  tmpbuf = new byte[1024];              }              in.close();              byte[] orgData = bout.toByteArray();              Key key = getKey(new FileInputStream(keyFilePath));              byte[] raw = DESEncryptUtil.doEncrypt(key, orgData);              file = new File(file.getParent() + "\\en_" + file.getName());              FileOutputStream out = new FileOutputStream(file);              out.write(raw);              out.close();              System.out.println("成功加密，加密文件位于:" + file.getAbsolutePath());          }          else if (operatorType.equalsIgnoreCase("decrypt"))          {              // 对文件进行解密              File file = new File(sourceFilePath);              FileInputStream fis = new FileInputStream(file);                            Key key = getKey(new FileInputStream(keyFilePath));              InputStream raw = DESEncryptUtil.doDecrypt(key, fis);              ByteArrayOutputStream bout = new ByteArrayOutputStream();              byte[] tmpbuf = new byte[1024];              int count = 0;              while ((count = raw.read(tmpbuf)) != -1)              {                  bout.write(tmpbuf, 0, count);                  tmpbuf = new byte[1024];              }              raw.close();              byte[] orgData = bout.toByteArray();              file = new File(file.getParent() + "\\rs_" + file.getName());              FileOutputStream fos = new FileOutputStream(file);              fos.write(orgData);              System.out.println("成功解密，解密文件位于:" + file.getAbsolutePath());          }      }  }

package com.framework.spring;    import java.io.IOException;  import java.io.InputStream;  import java.io.InputStreamReader;  import java.security.Key;  import java.util.Properties;    import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;  import org.springframework.core.io.Resource;  import org.springframework.util.DefaultPropertiesPersister;  import org.springframework.util.PropertiesPersister;    import com.framework.commons.util.DESEncryptUtil;    public class DecryptPropertyPlaceholderConfigurer extends          PropertyPlaceholderConfigurer  {      private Resource[] locations;            private Resource keyLocation;            private String fileEncoding;            public void setKeyLocation(Resource keyLocation)      {          this.keyLocation = keyLocation;      }            public void setLocations(Resource[] locations)      {          this.locations = locations;      }            public void loadProperties(Properties props) throws IOException      {          if (this.locations != null)          {              PropertiesPersister propertiesPersister = new DefaultPropertiesPersister();              for (int i = 0; i < this.locations.length; i++)              {                  Resource location = this.locations[i];                  if (logger.isInfoEnabled())                  {                      logger.info("Loading properties file from " + location);                  }                  InputStream is = null;                  try                  {                      is = location.getInputStream();                      Key key = DESEncryptUtil.getKey(keyLocation.getInputStream());                      is = DESEncryptUtil.doDecrypt(key, is);                      if (fileEncoding != null)                      {                          propertiesPersister.load(props, new InputStreamReader(                                  is, fileEncoding));                      }                      else                      {                          propertiesPersister.load(props, is);                      }                  }                  finally                  {                      if (is != null)                      {                          is.close();                      }                  }              }          }      }  }

<!-- 加密码属性文件 -->      <bean id="myPropertyConfigurer"          class="com.framework.spring.DecryptPropertyPlaceholderConfigurer">          <property name="locations">              <list><value>classpath*:spring_config/jdbc_official.databaseinfo</value></list>          </property>          <property name="fileEncoding" value="UTF-8"/>          <property name="keyLocation" value="classpath:spring_config/key.key" />      </bean>