From 62a67f2602c515c27ef2b9e0f4fbec5b2e572623 Mon Sep 17 00:00:00 2001
From: wenshao <shaojin.wensj@alibaba-inc.com>
Date: Sat, 2 Nov 2024 16:51:22 +0800
Subject: [PATCH] bug fix for jsonpath set, for issue #3125

---
 .../fastjson2/JSONPathSegmentName.java        |  2 +-
 .../fastjson2/issues_3100/Issue3125.java      | 50 +++++++++++++++++++
 2 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 core/src/test/java/com/alibaba/fastjson2/issues_3100/Issue3125.java

diff --git a/core/src/main/java/com/alibaba/fastjson2/JSONPathSegmentName.java b/core/src/main/java/com/alibaba/fastjson2/JSONPathSegmentName.java
index 49de0e29a8..a0ad4eb78f 100644
--- a/core/src/main/java/com/alibaba/fastjson2/JSONPathSegmentName.java
+++ b/core/src/main/java/com/alibaba/fastjson2/JSONPathSegmentName.java
@@ -378,7 +378,7 @@ public void set(JSONPath.Context context, Object value) {
                 ObjectReader objectReader = provider.getObjectReader(item.getClass());
                 FieldReader fieldReader = objectReader.getFieldReader(nameHashCode);
                 if (fieldReader != null) {
-                    fieldReader.accept(item, null);
+                    fieldReader.accept(item, value);
                 }
             }
             return;
diff --git a/core/src/test/java/com/alibaba/fastjson2/issues_3100/Issue3125.java b/core/src/test/java/com/alibaba/fastjson2/issues_3100/Issue3125.java
new file mode 100644
index 0000000000..1b32393773
--- /dev/null
+++ b/core/src/test/java/com/alibaba/fastjson2/issues_3100/Issue3125.java
@@ -0,0 +1,50 @@
+package com.alibaba.fastjson2.issues_3100;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONPath;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue3125 {
+    @Getter
+    @Setter
+    static class User {
+        private String name;
+        private List<NVString> additionalInfo;
+    }
+
+    @Getter
+    @Setter
+    @ToString
+    static class NVString {
+        String name;
+        String value;
+    }
+
+    public static final String str = "{\"name\":\"fastjson2\",\"additionalInfo\":[{\"name\":\"srv6-color\",\"value\":\"test\"},{\"name\":\"test2\",\"value\":\"3\"}]}";
+
+    public static String path = "$.additionalInfo[?(@.name=='srv6-color')].value";
+
+    @Test
+    public void test_fastjson2_case1() {
+        User user = JSON.parseObject(str, User.class);
+        JSONPath jsonPath = JSONPath.of("$.additionalInfo[?(@.name=='srv6-color')].value");
+        jsonPath.set(user, "modify");
+        assertEquals(user.getAdditionalInfo().get(0).getValue(), "modify");
+    }
+
+    @Test
+    public void test_fastjson_case1() {
+        User user = JSON.parseObject(str, User.class);
+        com.alibaba.fastjson.JSONPath.set(user, "$.additionalInfo[?(@.name=='srv6-color')].value", "modify");
+        JSONPath jsonPath = JSONPath.of("$.additionalInfo[?(@.name=='srv6-color')].value");
+        jsonPath.set(user, "modify");
+        assertEquals(user.getAdditionalInfo().get(0).getValue(), "modify");
+    }
+}