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

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mutils组件中提供点我达(跑腿服务)进行在线派单、查询骑手等操作，该组件不可单独引用至maven依赖。详情请查看DianWoDaFunctions 官方文档：https://open.dianwoda.com/open-docs/

There is a newer version: 0.4.0.RELEASE

package cn.minsin.dianwoda.util;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

/**
 * 	点我达签名生成
 * 
 * @author minsin
 *
 */
public class SignUtil {

	/**
	 * 生成签名
	 *
	 * @param paramValues 签名参数
	 * @param secret      秘钥
	 * @return 签名
	 */
	public static String sign(Map paramValues, String secret) {
		try {
			StringBuilder sb = new StringBuilder();
			List paramNames = new ArrayList(paramValues.size());
			paramNames.addAll(paramValues.keySet());
			Collections.sort(paramNames);
			sb.append(secret);
			paramNames.forEach(paramName->sb.append(paramName).append(paramValues.get(paramName)));
			sb.append(secret);
			System.out.println("得到的加密前文段：" + sb);
			byte[] sha1Digest = getSHA1Digest(sb.toString());
			System.out.println("得到的签名：" + byte2hex(sha1Digest));
			return byte2hex(sha1Digest);
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
	}
	

	/**
	 * 获取SHA1
	 *
	 * @param data 数据
	 * @return byte数组
	 * @throws IOException IO异常
	 */
	private static byte[] getSHA1Digest(String data) throws IOException {
		byte[] bytes;
		try {
			MessageDigest md = MessageDigest.getInstance("SHA-1");
			bytes = md.digest(data.getBytes("utf-8"));
		} catch (GeneralSecurityException e) {
			e.printStackTrace();
			throw new IOException(e.getMessage());
		}
		return bytes;
	}

	/**
	 * 二进制转十六进制字符串
	 *
	 * @param bytes 字节数组
	 * @return 十六进制字符串
	 */
	private static String byte2hex(byte[] bytes) {
		StringBuilder sign = new StringBuilder();
		for (byte aByte : bytes) {
			String hex = Integer.toHexString(aByte & 0xFF);
			if (hex.length() == 1) {
				sign.append("0");
			}
			sign.append(hex.toUpperCase());
		}
		return sign.toString();
	}
}