fix code

hutool-http/src/test/java/cn/hutool/http/server/servlet/ServletUtilTest.java

@@ -0,0 +1,65 @@
+/*
+ * 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:
+ *          http://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 cn.hutool.http.server.servlet;
+
+import cn.hutool.core.util.ByteUtil;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.ByteArrayInputStream;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * ServletUtil工具类测试
+ *
+ * @author dazer
+ * @see ServletUtil
+ * @see JakartaServletUtil
+ */
+public class ServletUtilTest {
+
+	@Test
+	@Disabled
+	public void writeTest() {
+		final HttpServletResponse response = null;
+		final byte[] bytes = ByteUtil.toUtf8Bytes("地球是我们共同的家园，需要大家珍惜.");
+
+		//下载文件
+		// 这里没法直接测试，直接写到这里，方便调用；
+		//noinspection ConstantConditions
+		if (response != null) {
+			final String fileName = "签名文件.pdf";
+			final String contentType = "application/pdf";// application/octet-stream、image/jpeg、image/gif
+			response.setCharacterEncoding(StandardCharsets.UTF_8.name()); // 必须设置否则乱码; 但是 safari乱码
+			ServletUtil.write(response, new ByteArrayInputStream(bytes), contentType, fileName);
+		}
+	}
+
+	@Test
+	@Disabled
+	public void jakartaWriteTest() {
+		final jakarta.servlet.http.HttpServletResponse response = null;
+		final byte[] bytes = ByteUtil.toUtf8Bytes("地球是我们共同的家园，需要大家珍惜.");
+
+		//下载文件
+		// 这里没法直接测试，直接写到这里，方便调用；
+		//noinspection ConstantConditions
+		if (response != null) {
+			final String fileName = "签名文件.pdf";
+			final String contentType = "application/pdf";// application/octet-stream、image/jpeg、image/gif
+			response.setCharacterEncoding(StandardCharsets.UTF_8.name()); // 必须设置否则乱码; 但是 safari乱码
+			JakartaServletUtil.write(response, new ByteArrayInputStream(bytes), contentType, fileName);
+		}
+	}
+}