diff --git a/core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderCollectionMethodReadOnly.java b/core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderCollectionMethodReadOnly.java
index 808fccd0e7..755a586974 100644
--- a/core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderCollectionMethodReadOnly.java
+++ b/core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderCollectionMethodReadOnly.java
@@ -65,7 +65,8 @@ public void accept(T object, Object value) {
         if ("java.util.Collections$UnmodifiableRandomAccessList".equals(name)
                 || "java.util.Arrays$ArrayList".equals(name)
                 || "java.util.Collections$SingletonList".equals(name)
-                || name.startsWith("java.util.ImmutableCollections$")) {
+                || name.startsWith("java.util.ImmutableCollections$")
+                || name.startsWith("java.util.Collections$Unmodifiable")) {
             return;
         }
 
diff --git a/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderNoneDefaultConstructor.java b/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderNoneDefaultConstructor.java
index 59a9989c31..fd27f29c19 100644
--- a/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderNoneDefaultConstructor.java
+++ b/core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderNoneDefaultConstructor.java
@@ -360,7 +360,7 @@ public T readObject(JSONReader jsonReader, Type fieldType, Object fieldName, lon
 
                 Object fieldValue = valueMap.get(fieldReader.fieldNameHash);
                 if (fieldValue != null) {
-                    if (paramReader != null) {
+                    if (paramReader != null && (paramReader.fieldName == null || fieldReader.fieldName == null || !paramReader.fieldName.equals(fieldReader.fieldName))) {
                         continue;
                     }
                     fieldReader.accept(object, fieldValue);
diff --git a/core/src/test/java/com/alibaba/fastjson2/issues_2900/Issue2901.java b/core/src/test/java/com/alibaba/fastjson2/issues_2900/Issue2901.java
new file mode 100644
index 0000000000..26185bbbf7
--- /dev/null
+++ b/core/src/test/java/com/alibaba/fastjson2/issues_2900/Issue2901.java
@@ -0,0 +1,35 @@
+package com.alibaba.fastjson2.issues_2900;
+
+import com.alibaba.fastjson2.JSONObject;
+import com.alibaba.fastjson2.annotation.JSONField;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class Issue2901 {
+    @Setter
+    @Getter
+    @AllArgsConstructor
+    public class User {
+        @JSONField(name = "user_name")
+        private String userName;
+
+        @Override
+        public String toString() {
+            return "User{" +
+                    "userName='" + userName + '\'' +
+                    '}';
+        }
+    }
+
+    void test() {
+        String str1 = "{\n" +
+                "\"user_name\":\"zs\"\n" +
+                "}";
+        User user = JSONObject.parseObject(str1, User.class);
+        assertNotNull(user);
+        assertEquals(user.getUserName(), "zs");
+    }
+}