1

zj

2025-05-25 370c0e6d54be9222fcaa416fdd605f09e3c49e8a

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
package project.web.api;
 
import cn.hutool.core.util.RandomUtil;
import cn.hutool.crypto.SecureUtil;
import cn.hutool.json.JSONUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
 
 
public class UdunUtils {
    private static Logger logger = LoggerFactory.getLogger(UdunUtils.class);
 
    public static String post(String gateway, String merchantKey, String path, String body) {
        try {
            // 创建 URL 对象
            URL url = new URL(gateway+path);
 
            // 打开连接
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
 
            // 设置请求方法为 POST
            connection.setRequestMethod("POST");
 
            // 设置请求头
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestProperty("Accept", "application/json");
 
            // 启用输入输出流
            connection.setDoOutput(true);
 
            String rawBody = parseParams(merchantKey, body);
 
            // 写入请求体
            try (OutputStream os = connection.getOutputStream()) {
                byte[] input = rawBody.getBytes("utf-8");
                os.write(input, 0, input.length);
            }
 
            // 获取响应代码
            int responseCode = connection.getResponseCode();
 
            // 读取响应
            try (BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
                String inputLine;
                StringBuilder response = new StringBuilder();
                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }
                return response.toString();
            }
 
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
 
    public static String parseParams(String merchantKey, String body) {
        Map<String, String> params = new HashMap<>();
        String timestamp = System.currentTimeMillis() + "";
        String nonce = RandomUtil.randomString(6);
        String sign = sign(merchantKey, timestamp, nonce, body);
        params.put("timestamp", timestamp);
        params.put("nonce", nonce);
        params.put("sign", sign);
        params.put("body", body);
        return JSONUtil.toJsonStr(params);
    }
 
    public static String sign(String key, String timestamp, String nonce, String body) {
        String raw = body + key + nonce + timestamp;
        return SecureUtil.md5(raw);
    }
 
    public static boolean checkSign(String key, String timestamp, String nonce, String body, String sign) {
        String checkSign = sign(key, timestamp, nonce, body);
        return checkSign.equals(sign);
    }
}