MD5Util.java

package com.ctrip.platform.dal.daogen.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Util {
    public static String parseStrToMd5L32(String str) {
        String reStr = null;
        try {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            byte[] bytes = md5.digest(str.getBytes());
            StringBuffer stringBuffer = new StringBuffer();
            for (byte b : bytes) {
                int bt = b & 0xff;
                if (bt < 16) {
                    stringBuffer.append(0);
                }
                stringBuffer.append(Integer.toHexString(bt));
            }
            reStr = stringBuffer.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return reStr;
    }

    public static String parseStrToMd5U32(String str) {
        String reStr = parseStrToMd5L32(str);
        if (reStr != null) {
            reStr = reStr.toUpperCase();
        }
        return reStr;
    }

    public static String parseStrToMd5U16(String str) {
        String reStr = parseStrToMd5L32(str);
        if (reStr != null) {
            reStr = reStr.toUpperCase().substring(8, 24);
        }
        return reStr;
    }

    public static String parseStrToMd5L16(String str) {
        String reStr = parseStrToMd5L32(str);
        if (reStr != null) {
            reStr = reStr.substring(8, 24);
        }
        return reStr;
    }
}