MD5加密

package com.config;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import sun.misc.BASE64Encoder;

public class MD5 {
	
	/**
	 * MD5加密操作1
	 * @param str
	 * @return
	 */
	public static String getMD5Str1(String str){
        String value=null;
	    if(str==null) return "";
		MessageDigest md5 = null;
		try {
			md5 = MessageDigest.getInstance("MD5");
			BASE64Encoder baseEncoder = new BASE64Encoder();
			value = baseEncoder.encode(md5.digest(str.getBytes("utf-8")));
		} catch(NoSuchAlgorithmException e) {
			e.printStackTrace();
		} catch(UnsupportedEncodingException e){
			e.printStackTrace();
		}
		return value;
	}  
	
	
	/**
	 * MD5加密操作  2
	 * @param str
	 * @return
	 */
    public static String getMD5Str2(String str) {      
        MessageDigest messageDigest = null;      
        try {      
            messageDigest = MessageDigest.getInstance("MD5");      
            messageDigest.reset();      
            messageDigest.update(str.getBytes("UTF-8"));      
        } catch (NoSuchAlgorithmException e) {      
            e.printStackTrace();    
        } catch (UnsupportedEncodingException e) {      
            e.printStackTrace();      
        }      
        
        byte[] byteArray = messageDigest.digest();      
        StringBuffer md5StrBuff = new StringBuffer();      
        for(int i = 0; i < byteArray.length; i++) {                  
            if(Integer.toHexString(0xFF & byteArray[i]).length() == 1)      
                md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));      
            else      
                md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));      
        }      
        return md5StrBuff.toString();      
    }  
	
	public static void main(String[] args){
		System.out.println(getMD5Str1("111111"));
		System.out.println(getMD5Str2("111111"));
	}
	

}