jsp加密密碼

1. jsp中如何使用自帶的md5類進行加密

jsp端實現md5加密就是jsp的java段代碼來實現的，引入md5加密類，然後調用該類相應的方法就ok了，如果是輸出的時候要注意的是別轉換為字元串，如果jdk5.0以上的話
System.out.printf("%x",「加密過的變數」);
out.printf("%x",「加密過的變數」);

2. jsp中怎麼實現MD5加密

1. 寫編寫一個MD5加密工具類

2. 通過import方式將MD5加密工具類引入到jsp中，然後使用MD5工具類進行加密

3. 下面是MD5加密工具類代碼

importjava.security.MessageDigest;

publicclassMD5Util{

	(byteb[]){
		StringBufferresultSb=newStringBuffer();
		for(inti=0;i<b.length;i++)
			resultSb.append(byteToHexString(b[i]));

		returnresultSb.toString();
	}

	(byteb){
		intn=b;
		if(n<0)
			n+=256;
		intd1=n/16;
		intd2=n%16;
		returnhexDigits[d1]+hexDigits[d2];
	}

	publicstaticStringMD5Encode(Stringorigin,Stringcharsetname){
		StringresultString=null;
		try{
			resultString=newString(origin);
			MessageDigestmd=MessageDigest.getInstance("MD5");
			if(charsetname==null||"".equals(charsetname))
				resultString=byteArrayToHexString(md.digest(resultString
						.getBytes()));
			else
				resultString=byteArrayToHexString(md.digest(resultString
						.getBytes(charsetname)));
		}catch(Exceptionexception){
		}
		returnresultString;
	}

	[]={"0","1","2","3","4","5",
			"6","7","8","9","a","b","c","d","e","f"};

	publicstaticvoidmain(String[]args){
		Strings="appid=wxc7dac6b76548e969&attach=106&auth_code=130099732281083883&body=醫泰天下遠程會診-20161019162200QCVV&mch_id=1393510702&nonce_str=&out_trade_no=20161019162200QCVV&time_expire=20161028192424&time_start=20161028182424&total_fee=1&key=";
		System.out.println(MD5Encode(s,null));
	}
	
}