修复graalvm编译后，未读取Content-Length可能导致的读取时间过长问题

hutool-http/src/main/java/org/dromara/hutool/http/server/HttpServerRequest.java

@@ -12,8 +12,12 @@
 
 package org.dromara.hutool.http.server;
 
+import com.sun.net.httpserver.Headers;
+import com.sun.net.httpserver.HttpExchange;
+import org.dromara.hutool.core.array.ArrayUtil;
 import org.dromara.hutool.core.io.IORuntimeException;
 import org.dromara.hutool.core.io.IoUtil;
+import org.dromara.hutool.core.io.stream.LimitedInputStream;
 import org.dromara.hutool.core.map.CaseInsensitiveMap;
 import org.dromara.hutool.core.map.MapUtil;
 import org.dromara.hutool.core.map.multi.ListValueMap;
@@ -22,7 +26,6 @@ import org.dromara.hutool.core.net.multipart.MultipartFormData;
 import org.dromara.hutool.core.net.multipart.UploadSetting;
 import org.dromara.hutool.core.net.url.UrlQueryUtil;
 import org.dromara.hutool.core.text.StrUtil;
-import org.dromara.hutool.core.array.ArrayUtil;
 import org.dromara.hutool.core.util.CharsetUtil;
 import org.dromara.hutool.core.util.ObjUtil;
 import org.dromara.hutool.http.meta.ContentTypeUtil;
@@ -30,8 +33,6 @@ import org.dromara.hutool.http.meta.HeaderName;
 import org.dromara.hutool.http.meta.Method;
 import org.dromara.hutool.http.useragent.UserAgent;
 import org.dromara.hutool.http.useragent.UserAgentUtil;
-import com.sun.net.httpserver.Headers;
-import com.sun.net.httpserver.HttpExchange;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -305,7 +306,24 @@ public class HttpServerRequest extends HttpServerBase {
 	 * @return 流
 	 */
 	public InputStream getBodyStream() {
-		return this.httpExchange.getRequestBody();
+		InputStream bodyStream = this.httpExchange.getRequestBody();
+
+		//issue#I6Q30X，读取body长度，避免读取结束后无法正常结束问题
+		final String contentLengthStr = getHeader(HeaderName.CONTENT_LENGTH);
+		long contentLength = 0;
+		if(StrUtil.isNotBlank(contentLengthStr)){
+			try{
+				contentLength = Long.parseLong(contentLengthStr);
+			} catch (final NumberFormatException ignore){
+				// ignore
+			}
+		}
+
+		if(contentLength > 0){
+			bodyStream = new LimitedInputStream(bodyStream, contentLength);
+		}
+
+		return bodyStream;
 	}
 
 	/**

hutool-http/src/test/java/org/dromara/hutool/http/server/IssueI6Q30XTest.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2023. looly(loolly@aliyun.com)
+ * Hutool is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *          https://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+package org.dromara.hutool.http.server;
+
+import org.dromara.hutool.core.date.DateUtil;
+import org.dromara.hutool.core.date.StopWatch;
+import org.dromara.hutool.core.lang.Console;
+import org.dromara.hutool.core.net.multipart.MultipartFormData;
+import org.dromara.hutool.http.HttpUtil;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 测试上传超时情况<br>
+ * https://gitee.com/dromara/hutool/issues/I6Q30X<br>
+ *
+ * post http://localhost:8888/file
+ * form-data: file: file-data
+ */
+public class IssueI6Q30XTest {
+	public static void main(String[] args) {
+		final SimpleServer server = HttpUtil.createServer(8888);
+		server.addAction("/file", (request, response) -> {
+			Console.log(request.getHeaders().entrySet());
+
+			final StopWatch stopWatch = DateUtil.createStopWatch();
+			stopWatch.start();
+			// graalvm编译后可能变慢
+			final MultipartFormData multipart = request.getMultipart();
+			stopWatch.stop();
+			Console.log(stopWatch.prettyPrint(TimeUnit.MILLISECONDS));
+
+			multipart.getFile("file").write("d:/test/uploadFile");
+
+			response.write("OK");
+		});
+		server.start();
+	}
+}