原 Base64Util 工具类

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package com.fyq.utils;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class Base64Util {
	
	// 加密
	public static String encodeBase64(String mingwen){
		String code="";
		if(mingwen==null||mingwen.equals("")){
			
		}else{
			BASE64Encoder encoder = new BASE64Encoder();
			try {
				code=encoder.encode(mingwen.getBytes());
			} catch (Exception e) {
				e.printStackTrace();
			}
			// System.out.println("加密后["+code+"]");
		}
		return code;
	}
	
	// 解密
	public static String decodeBase64(String mi){
		String mingwen="";
		if(mi==null||mi.equals("")){
			
		}else{
			BASE64Decoder decoder = new BASE64Decoder();
			try {
				byte[] by = decoder.decodeBuffer(mi);
				mingwen = new String(by);
			} catch (Exception e) {
				e.printStackTrace();
			}
			// System.out.println("解密后["+mingwen+"]");
		}
		return mingwen;
	}
	
	// 提供加密N次
	public static String encodeBase64(String mingwen,int times){
		int num=(times<=0)?1:times;
		String code="";
		if(mingwen==null||mingwen.equals("")){
			
		}else{
			code=mingwen;
			for(int i=0;i<num;i++){
				code=encodeBase64(code);
			}
			System.out.println("加密"+num+"次后["+code+"]");
		}
		return code;
	}
	
	// 对应提供解密N次
	public static String decodeBase64(String mi,int times){
		int num=(times<=0)?1:times;
		String mingwen="";
		if(mi==null||mi.equals("")){
			
		}else{
			mingwen=mi;
			for(int i=0;i<num;i++){
				mingwen=decodeBase64(mingwen);
			}
			// System.out.println("解密"+num+"次后["+mingwen+"]");
		}
		return mingwen;
	}
	
	public static void main(String[] args) {
        String str="dianping123456";
        System.out.println("测试明文["+str+"]");
        String basecode =Base64Util.encodeBase64(str);
		System.out.println("加密后["+basecode+"]");
		
		if(basecode!=null){
			String res =Base64Util.decodeBase64(basecode);
			System.out.println("解密后["+res+"]");
		}
		
		System.out.println("");
		System.out.println("N次加密测试--------");
		String basecodeN=Base64Util.encodeBase64(str, 2);
		String resN=Base64Util.decodeBase64(basecodeN, 2);
		String basecodeN3=Base64Util.encodeBase64(str, 5);
		String resN3=Base64Util.decodeBase64(basecodeN3, 5);
	}
	
	
	
}