cn.minsin.yiketong.util.SignUtil Maven / Gradle / Ivy

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package cn.minsin.yiketong.util;

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

public class SignUtil {

    /**
     * MD5
     * @param data
     * @return
     */
    public static String encode(String data) {
		StringBuffer buf = new StringBuffer("");
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			try {
				md.update(data.getBytes("UTF-8"));
			} catch (UnsupportedEncodingException e) {
				e.printStackTrace();
			}
			byte b[] = md.digest();
			int i;
			for (int offset = 0; offset < b.length; offset++) {
				i = b[offset];
				if (i < 0)
					i += 256;
				if (i < 16)
					buf.append("0");
				buf.append(Integer.toHexString(i));
			}
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		}
		return buf.toString();
	}	
}