import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import sun.misc.BASE64Encoder;


public class StringUtils {
	public String EncoderByMd5(String str) throws NoSuchAlgorithmException, UnsupportedEncodingException{
		
		MessageDigest md5=MessageDigest.getInstance("MD5");
		BASE64Encoder base64en = new BASE64Encoder();
		//加密后的字符串
		String newstr=base64en.encode(md5.digest(str.getBytes("utf-8")));
		return newstr;
	}
}