学步园

import java.util.Date;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.commons.codec.binary.Base64;

public class Base64Helper {
    private static final Logger logger = LoggerFactory.getLogger(Base64Helper.class);
 
    /**
     * BASE64解密
     * 
     * @param key
     * @return
     * @throws Exception
     */
    public static String decryptBase64(String key) throws Exception{ 
        key = key.replace("-", "/");  //解决URL参数带/问题。
        byte[]  byteArray=Base64.decodeBase64(key); // decryptBASE64(key);
        String code = new String(byteArray);
        logger.debug(" decrypt code:{} ",code);
        return code;
        
    } 
//    
    
    /**
     * BASE64加密
     * 
     * @param key
     * @return
     * @throws Exception
     */
    public static String encryptBase64(String key) throws Exception {
        byte[] binaryData = key.getBytes();
        String code = Base64.encodeBase64String(binaryData); //encryptBASE64(byteArray); 
        logger.debug(" encrypt code:{} ",code);
        return code.replace("/", "-");//解决URL参数带/问题。
    }
    public static void main(String[] args) throws Exception {
        Date startTime = new  Date();
        //BASE64加密 
        String code = encryptBase64("MP3/Mp4");
        logger.debug("BASE64加密:{}",code);  
        String key  =  decryptBase64(code);
        logger.debug("BASE64解密:{}",key);
        Date endTime = new  Date();  
        long diff = endTime.getTime() - startTime.getTime();   
        long days = diff;// / (1000 * 60 * 60 * 24);   
        logger.debug("time:{}",days);
    }
}

　　URL参数Base64解密和解密