fix: harden gzip decode and release 0.4.5

Avoid ZipException when Vert.x already decompressed gzip bodies, keep jackson-databind on the IDE classpath, and show a real build version instead of unknown.

Co-authored-by: Cursor <cursoragent@cursor.com>

parser/pom.xml

@@ -63,7 +63,7 @@
         <lombok.version>1.18.38</lombok.version>
         <slf4j.version>2.0.16</slf4j.version>
         <commons-lang3.version>3.18.0</commons-lang3.version>
-        <jackson.version>2.18.6</jackson.version>
+        <jackson.version>2.18.9</jackson.version>
         <logback.version>1.5.32</logback.version>
         <junit.version>4.13.2</junit.version>
     </properties>

parser/src/main/java/cn/qaiu/parser/PanBase.java

@@ -368,9 +368,12 @@ public abstract class PanBase implements IPanTool, Closeable {
         // 检查响应头中的Content-Encoding是否为gzip
         String contentEncoding = res.getHeader("Content-Encoding");
         try {
-            if ("gzip".equalsIgnoreCase(contentEncoding)) {
+            if ("gzip".equalsIgnoreCase(contentEncoding) && res.body() instanceof Buffer gzipBody
+                    && gzipBody.length() >= 2
+                    && (gzipBody.getByte(0) & 0xff) == 0x1f
+                    && (gzipBody.getByte(1) & 0xff) == 0x8b) {
                 // 如果是gzip压缩的响应体，解压（只解压一次，缓存结果）
-                String decompressed = decompressGzip((Buffer) res.body());
+                String decompressed = decompressGzip(gzipBody);
                 return new JsonObject(decompressed);
             } else {
                 return res.bodyAsJsonObject();

parser/src/main/java/cn/qaiu/util/HttpResponseHelper.java

@@ -119,8 +119,18 @@ public class HttpResponseHelper {
         };
     }
 
+    private static boolean looksLikeGzip(Buffer compressed) {
+        return compressed != null && compressed.length() >= 2
+                && (compressed.getByte(0) & 0xff) == 0x1f
+                && (compressed.getByte(1) & 0xff) == 0x8b;
+    }
+
     // -------------------- gzip --------------------
     private static String decompressGzip(Buffer compressed) throws IOException {
+        // Vert.x 可能已解压但仍带 Content-Encoding: gzip，再走 GZIPInputStream 会变成 ZipException
+        if (!looksLikeGzip(compressed)) {
+            return compressed.toString(StandardCharsets.UTF_8);
+        }
         try (ByteArrayInputStream bais = new ByteArrayInputStream(compressed.getBytes());
              GZIPInputStream gzis = new GZIPInputStream(bais);
              InputStreamReader isr = new InputStreamReader(gzis, StandardCharsets.UTF_8);