tech.mhuang.pacebox.springboot.wechat.wechat.common.util.WechatJSTicketUtil Maven / Gradle / Ivy

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package tech.mhuang.pacebox.springboot.wechat.wechat.common.util;


import tech.mhuang.pacebox.core.timer.SystemClock;
import tech.mhuang.pacebox.core.util.CryptoUtil;

import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

/**
 * 微信JS凭证工具类
 *
 * @author mhuang
 * @since 1.0.0
 */
public class WechatJSTicketUtil {

    public static Map sign(String jsapiTicket, String url) {
        Map ret = new HashMap<>();
        String nonceStr = createNonceStr(),
                timestamp = createTimestamp(),
                string1,
                signature = "";
        //注意这里参数名必须全部小写，且必须有序
        string1 = "jsapi_ticket=" + jsapiTicket +
                "&noncestr=" + nonceStr +
                "×tamp=" + timestamp +
                "&url=" + url;
        try {
            signature = CryptoUtil.encrypt(string1, "SHA-1");
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }

        ret.put("url", url);
        ret.put("jsapi_ticket", jsapiTicket);
        ret.put("nonceStr", nonceStr);
        ret.put("timestamp", timestamp);
        ret.put("signature", signature);
        return ret;
    }

    private static String byteToHex(final byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash) {
            formatter.format("%02x", b);
        }
        String result = formatter.toString();
        formatter.close();
        return result;
    }

    private static String createNonceStr() {
        return UUID.randomUUID().toString();
    }

    private static String createTimestamp() {
        return Long.toString(SystemClock.now() / 1000);
    }
}