From 5644769f25906865aede185d69e741591c621425 Mon Sep 17 00:00:00 2001
From: wenshao <shaojin.wensj@alibaba-inc.com>
Date: Wed, 1 Jan 2025 13:52:24 +0800
Subject: [PATCH] add testcase for issue #3157

---
 .../alibaba/fastjson/v2issues/Issue3157.java  | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue3157.java

diff --git a/fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue3157.java b/fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue3157.java
new file mode 100644
index 0000000000..7b77959401
--- /dev/null
+++ b/fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue3157.java
@@ -0,0 +1,48 @@
+package com.alibaba.fastjson.v2issues;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.serializer.SerializeConfig;
+import com.alibaba.fastjson.serializer.ToStringSerializer;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue3157 {
+    public static class People {
+        private Integer age;
+
+        private Long hairNums;
+
+        private String name;
+
+        public People(Integer age, String name, Long hairNums) {
+            this.age = age;
+            this.name = name;
+            this.hairNums = hairNums;
+        }
+
+        public Integer getAge() {
+            return age;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public Long getHairNums() {
+            return hairNums;
+        }
+    }
+
+    @Test
+    public void test() {
+        SerializeConfig stringSerializeConfig = new SerializeConfig();
+        stringSerializeConfig.put(Integer.class, ToStringSerializer.instance);
+        stringSerializeConfig.put(Long.class, ToStringSerializer.instance);
+
+        People one = new People(10, "aaa", 10000000L);
+        assertEquals(
+                "{\"age\":\"10\",\"hairNums\":\"10000000\",\"name\":\"aaa\"}",
+                JSON.toJSONString(one, stringSerializeConfig));
+    }
+}