From 0d0dd1b9d27f462c95ff1378da29c1ff67f1b05c Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Wed, 12 Apr 2023 00:11:03 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=B2=A1=E6=9C=89=E5=B1=9E?=
 =?UTF-8?q?=E6=80=A7=E7=9A=84=E5=AF=B9=E8=B1=A1=E8=BD=ACjson=E5=AD=97?=
 =?UTF-8?q?=E7=AC=A6=E4=B8=B2=E6=8A=9B=E5=BC=82=E5=B8=B8=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 CHANGELOG.md                                  |  1 +
 .../java/cn/hutool/json/ObjectMapper.java     |  8 +---
 hutool-json/src/test/java/Issue3051Test.java  | 43 +++++++++++++++++++
 3 files changed, 46 insertions(+), 6 deletions(-)
 create mode 100644 hutool-json/src/test/java/Issue3051Test.java

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a68452a8b..a3bf7dd9e 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,7 @@
 * 【core  】      修复SafeConcurrentHashMap.computeIfAbsent可能存在的结果为null的情况（issue#I6RVMY@Gitee）
 * 【json  】      修复Pair反序列化报错问题（issue#I6SZYB@Gitee）
 * 【core  】      修复使用AnnotationUtil.getAnnotationAlias获取注解时可能会出现空指针的问题（pr#975@Gitee）
+* 【json  】      修复没有属性的对象转json字符串抛异常问题（issue#3051@Github）
 
 -------------------------------------------------------------------------------------------------------------
 # 5.8.16 (2023-03-26)
diff --git a/hutool-json/src/main/java/cn/hutool/json/ObjectMapper.java b/hutool-json/src/main/java/cn/hutool/json/ObjectMapper.java
index 7248203ec..32c8b035f 100755
--- a/hutool-json/src/main/java/cn/hutool/json/ObjectMapper.java
+++ b/hutool-json/src/main/java/cn/hutool/json/ObjectMapper.java
@@ -112,13 +112,9 @@ public class ObjectMapper {
 			// 普通Bean
 			// TODO 过滤器对Bean无效，需补充。
 			mapFromBean(source, jsonObject);
-		} else {
-			if(false == jsonObject.getConfig().isIgnoreError()){
-				// 不支持对象类型转换为JSONObject
-				throw new JSONException("Unsupported type [{}] to JSONObject!", source.getClass());
-			}
-			// 如果用户选择跳过异常，则跳过此值转换
 		}
+
+		// 跳过空对象
 	}
 
 	/**
diff --git a/hutool-json/src/test/java/Issue3051Test.java b/hutool-json/src/test/java/Issue3051Test.java
new file mode 100644
index 000000000..f37430128
--- /dev/null
+++ b/hutool-json/src/test/java/Issue3051Test.java
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+
+import cn.hutool.json.JSONConfig;
+import cn.hutool.json.JSONObject;
+import cn.hutool.json.JSONUtil;
+import lombok.Data;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * https://github.com/dromara/hutool/issues/3051
+ */
+public class Issue3051Test {
+	@Test
+	public void parseTest() {
+		final JSONObject jsonObject = JSONUtil.parseObj(new EmptyBean(),
+			JSONConfig.create().setIgnoreError(true));
+
+		Assert.assertEquals("{}", jsonObject.toString());
+	}
+
+	@Test
+	public void parseTest2() {
+		final JSONObject jsonObject = JSONUtil.parseObj(new EmptyBean());
+
+		Assert.assertEquals("{}", jsonObject.toString());
+	}
+
+	@Data
+	static class EmptyBean {
+
+	}
+}