package com.jysoft.weChat.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

public class WechatUtil {
	public static String sort(String token, String timestamp, String nonce) {
		String[] strArray = { token, timestamp, nonce };
		Arrays.sort(strArray);
		StringBuilder sb = new StringBuilder();
		for (String str : strArray) {
			sb.append(str);
		}
		return sb.toString();
	}


		public static String sort(String[] strArray ) {
//			String[] strArray = { token, timestamp, nonce };
			Arrays.sort(strArray);
			StringBuilder sb = new StringBuilder();
			for (String str : strArray) {
				sb.append(str);
			}
			return sb.toString();
		}
	/**
	 * 字符串进行shal加密
	 * 
	 * @param str
	 * @return
	 */
	public static String shal(String str) {
		try {
			MessageDigest digest = MessageDigest.getInstance("SHA-1");
			digest.update(str.getBytes());
			byte messageDigest[] = digest.digest();

			StringBuffer hexString = new StringBuffer();
			// 字节数组转换为 十六进制 数
			for (int i = 0; i < messageDigest.length; i++) {
				String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
				if (shaHex.length() < 2) {
					hexString.append(0);
				}
				hexString.append(shaHex);
			}
			return hexString.toString();

		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		}
		return "";
	}
}