diff --git a/hutool-http/src/main/java/cn/hutool/http/HttpDownloader.java b/hutool-http/src/main/java/cn/hutool/http/HttpDownloader.java
index cf1a6f15b..f0a3788cf 100644
--- a/hutool-http/src/main/java/cn/hutool/http/HttpDownloader.java
+++ b/hutool-http/src/main/java/cn/hutool/http/HttpDownloader.java
@@ -46,6 +46,7 @@ public class HttpDownloader {
 	 * @param url     请求的url
 	 * @param timeout 超时毫秒数
 	 * @return 文件数据
+	 * @since 5.8.28
 	 */
 	public static byte[] downloadBytes(String url, int timeout) {
 		return requestDownload(url, timeout).bodyBytes();
diff --git a/hutool-json/src/test/java/cn/hutool/json/BeanToJsonTest.java b/hutool-json/src/test/java/cn/hutool/json/BeanToJsonTest.java
new file mode 100644
index 000000000..5c756759d
--- /dev/null
+++ b/hutool-json/src/test/java/cn/hutool/json/BeanToJsonTest.java
@@ -0,0 +1,29 @@
+package cn.hutool.json;
+
+import lombok.Data;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class BeanToJsonTest {
+	@Test
+	public void toJsonStrTest() {
+		final ReadParam readParam = new ReadParam();
+		readParam.setInitSpikeMac("a");
+		readParam.setMac("b");
+		readParam.setSpikeMac("c");
+		readParam.setBag("d");
+		readParam.setProjectId(123);
+
+		//Console.log(JSONUtil.toJsonStr(readParam));
+		Assert.assertEquals("{\"initSpikeMac\":\"a\",\"mac\":\"b\",\"spikeMac\":\"c\",\"bag\":\"d\",\"projectId\":123}", JSONUtil.toJsonStr(readParam));
+	}
+
+	@Data
+	private static class ReadParam{
+		private String initSpikeMac;
+		private String mac;
+		private String spikeMac;
+		private String bag;
+		private Integer projectId;
+	}
+}