DES加密解密工具类
1，DES加密解密工具类
package spring3.pripertyFile;import java.security.Key;import java.security.SecureRandom;import javax.crypto.Cipher;import javax.crypto.KeyGenerator;import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class DESUtils {private static Key key;private static final String KEY_STR = "@myKey!";private static final String DES = "DES";private static final String UTF8 = "UTF8";static {try {KeyGenerator genarator = KeyGenerator.getInstance(DES);genarator.init(new SecureRandom(KEY_STR.getBytes()));key = genarator.generateKey();genarator = null;} catch (Exception e) {throw new RuntimeException();}}/** * 加密 * * @param str * 原文 * @return 密文 */public static String getEncryptString(String str) {BASE64Encoder encoder = new BASE64Encoder();try {Cipher cipher = Cipher.getInstance(DES);cipher.init(Cipher.ENCRYPT_MODE, key);return encoder.encode(cipher.doFinal(str.getBytes(UTF8)));} catch (Exception e) {throw new RuntimeException();}}/** * 解密 * * @param str * 密文 * @return 原文 */public static String getDecryptString(String str) {BASE64Decoder decoder = new BASE64Decoder();try {Cipher cipher = Cipher.getInstance(DES);cipher.init(Cipher.DECRYPT_MODE, key);return new String(cipher.doFinal(decoder.decodeBuffer(str)), UTF8);} catch (Exception e) {e.printStackTrace();throw new RuntimeException();}}public static void main(String[] args) {String srcStr = "password";System.out.println("原文：" + srcStr);System.out.println("密文：" + getEncryptString(srcStr));System.out.println();String destStr = "NWVdft3lhOnJdIQo/tKMJw==";System.out.println("密文：" + destStr);System.out.println("原文：" + getDecryptString(destStr));}}?2，关于BASE64Decoder和BASE64Encoder的import问题
右键项目?属性?java?bulid?path?jre?System?Library?access?rules?resolution选择accessible，下面填上**?点击确定即可
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