SHA256：

/**

* 备用方案 SHA256加密

* @author zx

*/

public class SHA256Util {

public static void main(String[] args) {

System.out.println(getSHA256StrJava("130"));

System.out.println(getSHA256StrJava("130"));

}

public static String getSHA256StrJava(String str) {

MessageDigest messageDigest;

String encodeStr = "";

try {

messageDigest = MessageDigest.getInstance("SHA-256");

messageDigest.update(str.getBytes("UTF-8"));

encodeStr = byte2Hex(messageDigest.digest());

} catch (NoSuchAlgorithmException e) {

e.printStackTrace();

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return encodeStr;

}

private static String byte2Hex(byte[] bytes) {

StringBuffer stringBuffer = new StringBuffer();

String temp = null;

for (int i = 0; i < bytes.length; i++) {

temp = Integer.toHexString(bytes[i] & 0xFF);

if (temp.length() == 1) {

//1得到一位的进行补0操作

stringBuffer.append("0");

}

stringBuffer.append(temp);

}

return stringBuffer.toString();

}

}