opt: 内存缓存模式

nl-verify-check-sdk/src/main/java/org/nl/core/AuthInterceptor.java

@@ -5,7 +5,6 @@ import org.springframework.web.servlet.HandlerInterceptor;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -36,8 +35,7 @@ public class AuthInterceptor implements HandlerInterceptor {
                 if (!Files.exists(path)) {
                     result = LicenseResult.requestResult(false, "授权码失败", null);
                 } else {
-                    // 考虑存内存
-                    String authCode = new String(Files.readAllBytes(path), StandardCharsets.UTF_8).trim();
+                    String authCode = verifier.getInstalledAuthCode();
                     result = verifier.verify(authCode);
                 }
             }

nl-verify-check-sdk/src/main/java/org/nl/core/LicenseVerifier.java

@@ -3,9 +3,11 @@ package org.nl.core;
 import org.nl.util.RSAUtil;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
 
@@ -18,6 +20,9 @@ public class LicenseVerifier {
 
     private final LicenseProperties properties;
 
+    // 内存缓存授权码，避免频繁读取文件
+    private volatile String cachedAuthCode;
+
     public LicenseVerifier(RSAUtil rsaUtil, LicenseProperties properties) {
         this.rsaUtil = rsaUtil;
         this.properties = properties;
@@ -56,12 +61,46 @@ public class LicenseVerifier {
             }
             Files.write(
                     targetPath,
-                    (authCode == null ? "" : authCode).getBytes(java.nio.charset.StandardCharsets.UTF_8),
-                    java.nio.file.StandardOpenOption.CREATE,
-                    java.nio.file.StandardOpenOption.TRUNCATE_EXISTING
+                    (authCode == null ? "" : authCode).getBytes(StandardCharsets.UTF_8),
+                    StandardOpenOption.CREATE,
+                    StandardOpenOption.TRUNCATE_EXISTING
             );
+            // 更新内存缓存
+            cachedAuthCode = authCode == null ? "" : authCode.trim();
         } catch (IOException e) {
             throw new RuntimeException("写入授权码失败: " + e.getMessage(), e);
         }
     }
+
+    /**
+     * 懒加载读取已安装授权码，优先走内存缓存。
+     */
+    public String getInstalledAuthCode() {
+        String local = cachedAuthCode;
+        if (local != null) {
+            return local;
+        }
+        if (cachedAuthCode != null) {
+            return cachedAuthCode;
+        }
+        String sdkLocation = properties.getSdkLocation();
+        if (sdkLocation == null || sdkLocation.trim().isEmpty()) {
+            cachedAuthCode = null;
+            return null;
+        }
+        try {
+            Path path = Paths.get(sdkLocation);
+            if (!Files.exists(path)) {
+                cachedAuthCode = null;
+                return null;
+            }
+            String content = new String(Files.readAllBytes(path), StandardCharsets.UTF_8).trim();
+            cachedAuthCode = content;
+            return cachedAuthCode;
+        } catch (IOException e) {
+            // 读取失败时，不缓存错误结果，直接返回 null
+            cachedAuthCode = null;
+            return null;
+        }
+    }
 }