fix code

hutool-core/src/main/java/cn/hutool/core/net/multipart/UploadFile.java

@@ -4,12 +4,9 @@ import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.io.IoUtil;
 import cn.hutool.core.util.StrUtil;
 
-import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
-import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -20,11 +17,12 @@ import java.io.InputStream;
  * @author xiaoleilu
  */
 public class UploadFile {
+
 	private static final String TMP_FILE_PREFIX = "hutool-";
 	private static final String TMP_FILE_SUFFIX = ".upload.tmp";
 
-	private UploadFileHeader header;
+	private final UploadFileHeader header;
-	private UploadSetting setting;
+	private final UploadSetting setting;
 
 	private int size = -1;
 
@@ -69,7 +67,7 @@ public class UploadFile {
 	 */
 	public File write(String destPath) throws IOException {
 		if (data != null || tempFile != null) {
-			return write(FileUtil.touch(destPath));
+			return write(FileUtil.file(destPath));
 		}
 		return null;
 	}
@@ -123,10 +121,10 @@ public class UploadFile {
 		assertValid();
 
 		if (data != null) {
-			return new BufferedInputStream(new ByteArrayInputStream(data));
+			return IoUtil.toBuffered(IoUtil.toStream(this.data));
 		}
 		if (tempFile != null) {
-			return new BufferedInputStream(new FileInputStream(tempFile));
+			return IoUtil.toBuffered(IoUtil.toStream(this.tempFile));
 		}
 		return null;
 	}
@@ -190,7 +188,7 @@ public class UploadFile {
 		// 处理内存文件
 		int memoryThreshold = setting.memoryThreshold;
 		if (memoryThreshold > 0) {
-			ByteArrayOutputStream baos = new ByteArrayOutputStream(memoryThreshold);
+			final ByteArrayOutputStream baos = new ByteArrayOutputStream(memoryThreshold);
 			int written = input.copy(baos, memoryThreshold);
 			data = baos.toByteArray();
 			if (written <= memoryThreshold) {

hutool-http/src/main/java/cn/hutool/http/server/action/Action.java

@@ -3,6 +3,8 @@ package cn.hutool.http.server.action;
 import cn.hutool.http.server.HttpServerRequest;
 import cn.hutool.http.server.HttpServerResponse;
 
+import java.io.IOException;
+
 /**
  * 请求处理接口<br>
  * 当用户请求某个Path，则调用相应Action的doAction方法
@@ -18,5 +20,5 @@ public interface Action {
 	 * @param request  请求对象
 	 * @param response 响应对象
 	 */
-	void doAction(HttpServerRequest request, HttpServerResponse response);
+	void doAction(HttpServerRequest request, HttpServerResponse response) throws IOException;
 }

hutool-http/src/main/java/cn/hutool/http/server/handler/ActionHandler.java

@@ -6,6 +6,8 @@ import cn.hutool.http.server.action.Action;
 import com.sun.net.httpserver.HttpExchange;
 import com.sun.net.httpserver.HttpHandler;
 
+import java.io.IOException;
+
 /**
  * Action处理器，用于将HttpHandler转换为Action形式
  *
@@ -26,7 +28,7 @@ public class ActionHandler implements HttpHandler {
 	}
 
 	@Override
-	public void handle(HttpExchange httpExchange) {
+	public void handle(HttpExchange httpExchange) throws IOException {
 		action.doAction(
 				new HttpServerRequest(httpExchange),
 				new HttpServerResponse(httpExchange)

hutool-http/src/test/java/cn/hutool/http/server/SimpleServerTest.java

@@ -1,5 +1,7 @@
 package cn.hutool.http.server;
 
+import cn.hutool.core.lang.Console;
+import cn.hutool.core.net.multipart.UploadFile;
 import cn.hutool.http.ContentType;
 import cn.hutool.http.HttpUtil;
 
@@ -18,6 +20,16 @@ public class SimpleServerTest {
 				.addAction("/formTest", (request, response) ->
 						response.write(request.getParams().toString(), ContentType.TEXT_PLAIN.toString())
 				)
+				// 文件上传测试
+				// http://localhost:8888/formTest?a=1&a=2&b=3
+				.addAction("/file", (request, response) -> {
+					final UploadFile file = request.getMultipart().getFile("file");
+					// 传入目录，默认读取HTTP头中的文件名然后创建文件
+					file.write("d:/test/");
+					Console.log("Write file to: d:/test/");
+					response.write(request.getParams().toString(), ContentType.TEXT_PLAIN.toString());
+						}
+				)
 				.start();
 	}
 }