package com.ssj.framework.weixin.util;

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

/**
 *
 * 类说明：sha1加密
 */
public class SHA1Util {
	 /**
     * 排序方法
     *
     * @param token
     * @param timestamp
     * @param nonce
     * @return
     */
    public  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  String sort(String token, String timestamp, String nonce,String jsUrl) {
    	String[] strArray = {token, timestamp, nonce,jsUrl};
    	Arrays.sort(strArray);
    	StringBuilder sb = new StringBuilder();
    	for (String str : strArray) {
    		sb.append(str);
    	}
    	
    	return sb.toString();
    }
    /**
     * 将字符串进行sha1加密
     *
     * @param str 需要加密的字符串
     * @return 加密后的内容
     */
    public  String sha1(String str) {
        try {
            MessageDigest digest = MessageDigest.getInstance("SHA-1");
            digest.update(str.getBytes());
            byte messageDigest[] = digest.digest();
            // Create Hex String
            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 "";
    }
}
