DS-8632N-I16-V2调用/ISAPI/System/deviceInf时，digest认证的Java

以下是使用Java进行DS-8632N-I16-V2的digest认证的示例代码：

import java.io.*;
import java.net.*;
import java.security.*;
import java.util.*;
import org.apache.commons.codec.binary.Base64;

public class DigestAuthentication {
    
    private static String username = "admin";
    private static String password = "password";
    private static String host = "192.168.1.100";
    private static int port = 80;
    private static String realm = "";
    private static String nonce = "";
    private static String qop = "";
    private static String algorithm = "MD5";
    private static String opaque = "";
    
    public static void main(String[] args) {
        try {
            // 发送GET请求获取realm、nonce等参数
            HttpURLConnection connection = (HttpURLConnection) new URL("http://" + host + ":" + port).openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            String authenticate = connection.getHeaderField("WWW-Authenticate");
            if (authenticate != null && authenticate.startsWith("Digest")) {
                Scanner scanner = new Scanner(authenticate.substring(7));
                scanner.useDelimiter(", ");
                while (scanner.hasNext()) {
                    String[] pair = scanner.next().split("=");
                    if (pair.length == 2) {
                        String name = pair[0].substring(1, pair[0].length() - 1);
                        String value = pair[1].substring(1, pair[1].length() - 1);
                        if ("realm".equals(name)) {
                            realm = value;
                        } else if ("nonce".equals(name)) {
                            nonce = value;
                        } else if ("qop".equals(name)) {
                            qop = value;
                        } else if ("algorithm".equals(name)) {
                            algorithm = value;
                        } else if ("opaque".equals(name)) {
                            opaque = value;
                        }
                    }
                }
            }
            connection.disconnect();
            
            // 发送POST请求进行认证
            String ha1 = md5sum(username + ":" + realm + ":" + password);
            String ha2 = md5sum("GET:/ISAPI/System/deviceInfo");
            String response = md5sum(ha1 + ":" + nonce + ":" + "00000001" + ":" + "xyz" + ":" + qop + ":" + ha2);
            connection = (HttpURLConnection) new URL("http://" + host + ":" + port + "/ISAPI/System/deviceInfo").openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Authorization", "Digest username=\"" + username + "\", realm=\"" + realm + "\", nonce=\"" + nonce + "\", uri=\"/ISAPI/System/deviceInfo\", qop=" + qop + ", algorithm=" + algorithm + ", opaque=\"" + opaque + "\", nc=00000001, cnonce=\"xyz\", response=\"" + response + "\"");
            connection.setDoOutput(true);
            connection.connect();
            InputStream inputStream = connection.getInputStream();
            String result = new Scanner(inputStream).useDelimiter("\\A").next();
            System.out.println(result);
            connection.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    private static String md5sum(String text) throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(text.getBytes());
        byte[] digest = md.digest();
        return Base64.encodeBase64String(digest);
    }
    
}

请根据实际情况修改代码中的用户名、密码、主机名、端口号等参数。注意，要使用Apache Commons Codec库中的Base64类进行Base64编码。