全部模块:产品时间排序

pdf-tech-core/src/main/java/cn/kdan/pdf/tech/core/utils/ServerUtils.java

@@ -0,0 +1,99 @@
+package cn.kdan.pdf.tech.core.utils;
+
+import java.io.*;
+import java.net.InetAddress;
+import java.net.NetworkInterface;
+import java.util.Enumeration;
+
+public class ServerUtils {
+    public static String getRealDeviceId() {
+        try {
+            Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+            while (interfaces.hasMoreElements()) {
+                NetworkInterface networkInterface = interfaces.nextElement();
+
+                // 忽略回环接口和虚拟接口
+                if (networkInterface.isLoopback() || networkInterface.isVirtual()) {
+                    continue;
+                }
+
+                // 获取MAC地址
+                byte[] mac = networkInterface.getHardwareAddress();
+                if (mac != null && mac.length > 0) {
+                    StringBuilder sb = new StringBuilder();
+                    for (int i = 0; i < mac.length; i++) {
+                        sb.append(String.format("%02X:", mac[i]));
+                    }
+                    return sb.toString().substring(0, sb.length() - 1);
+                }
+            }
+            // 如果没有找到可用的MAC地址，则返回本机IP地址作为设备ID
+            return InetAddress.getLocalHost().getHostAddress();
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    public static void writeTimeStampToFile(long timeStamp) {
+        try {
+            // 创建隐藏文件（如果不存在）
+            File file = new File("C:\\time.txt");
+            file.createNewFile();
+            file.setWritable(true, false); // 设置文件为只写模式
+
+            // 将时间戳写入文件
+            FileWriter writer = new FileWriter(file);
+            writer.write(String.valueOf(timeStamp));
+            writer.close();
+
+            System.out.println("Time stamp has been written to the file.");
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+
+    /**
+     * 获取设备id（真实设备id+timestamp 加密）
+     * @return getDeviceId
+     */
+    public static String getDeviceId() {
+        String deviceId = getRealDeviceId();
+        String filePath = "C:\\time.txt";
+
+        File file = new File(filePath);
+        if (!file.exists()) {
+            // 文件不存在，写入时间戳到隐藏文件
+            long timeStamp = System.currentTimeMillis();
+            writeTimeStampToFile(timeStamp);
+
+            return deviceId + "-" + timeStamp;
+        } else {
+            // 文件存在，读取时间戳并与设备ID拼接返回
+            try (BufferedReader reader = new BufferedReader(new FileReader(file))) {
+                String timeStampStr = reader.readLine();
+
+                return deviceId + "-" + timeStampStr;
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+        return null;
+    }
+
+
+    /**
+     * 校验设备id
+     * @param deviceId 设备id
+     * @return boolean
+     */
+    public boolean  checkDeviceId(String deviceId) {
+      String realDeviceId = getDeviceId();
+      return deviceId.equals(realDeviceId);
+    }
+
+
+
+}