Issue2371问题fixed

Author: mek1986

core/src/main/java/com/alibaba/fastjson2/reader/ObjectReaderCreator.java

@@ -1637,7 +1637,7 @@ boolean record = BeanUtils.isRecord(objectClass);
             if (!record) {
                 BeanUtils.declaredFields(objectClass, field -> {
                     fieldInfo.init();
-                    fieldInfo.ignore = (field.getModifiers() & Modifier.PUBLIC) == 0;
+                    fieldInfo.ignore = (field.getModifiers() & Modifier.PUBLIC) == 0 && ((beanFeatures & JSONReader.Feature.FieldBased.mask) == 0);
                     fieldInfo.features |= beanFeatures;
                     fieldInfo.format = beanFormat;
 

core/src/test/java/com/alibaba/fastjson2/issues_2300/Issue2371.java

@@ -0,0 +1,25 @@
+package com.alibaba.fastjson2.issues_2300;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONReader;
+import com.alibaba.fastjson2.annotation.JSONType;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue2371 {
+    @JSONType(deserializeFeatures = JSONReader.Feature.FieldBased)
+    private static class Bean {
+        private String testField;
+
+        public String getTestField() {
+            return testField;
+        }
+    }
+
+    @Test
+    public void test() {
+        Bean test = JSON.parseObject("{\"testField\": \"My Test\"}", Bean.class);
+        assertEquals("My Test", test.getTestField());
+    }
+}