enum support fastjson 1.x JSONField#unwrapped, for issue #2525

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

@@ -1166,6 +1166,13 @@ private void processJSONField1x(FieldInfo fieldInfo, Annotation annotation) {
                             }
                             break;
                         }
+                        case "unwrapped": {
+                            boolean unwrapped = (Boolean) result;
+                            if (unwrapped) {
+                                fieldInfo.features |= FieldInfo.UNWRAPPED_MASK;
+                            }
+                            break;
+                        }
                         default:
                             break;
                     }

fastjson1-compatible/src/test/java/com/alibaba/fastjson/v2issues/Issue2525.java

@@ -0,0 +1,86 @@
+package com.alibaba.fastjson.v2issues;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.annotation.JSONField;
+import lombok.Data;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue2525 {
+    @Test
+    public void testMutated() {
+        StandardGetQry standardGetQry = new StandardGetQry();
+        StandardBaseModel standardBaseModel = new StandardBaseModel();
+        standardBaseModel.setCode("2");
+        standardBaseModel.setCategory("NEW_CALL_STATUS");
+        standardGetQry.setStandardBaseModel(standardBaseModel);
+        String jsonStr = JSON.toJSONString(standardGetQry);
+        assertEquals("{\"standardCategory\":\"NEW_CALL_STATUS\",\"standardCode\":\"2\"}", jsonStr);
+
+        StandardGetQry standardGetQry2 = JSON.parseObject(jsonStr, StandardGetQry.class);
+        assertEquals("{\"standardCategory\":\"NEW_CALL_STATUS\",\"standardCode\":\"2\"}", JSON.toJSONString(standardGetQry2));
+    }
+
+    @Data
+    public static class StandardGetQry {
+        /**
+         * 基础数据
+         */
+        @JSONField(unwrapped = true)
+        private StandardBaseModel standardBaseModel;
+    }
+
+    @Data
+    public static class StandardBaseModel {
+        /**
+         * 逻辑编码-标准KEY
+         */
+        @JSONField(name = "standardCode")
+        private String code;
+
+        /**
+         * 标准类别
+         */
+        @JSONField(name = "standardCategory")
+        private String category;
+    }
+
+    @Test
+    public void testMutated1() {
+        StandardGetQry1 standardGetQry = new StandardGetQry1();
+        StandardBaseModel1 standardBaseModel = new StandardBaseModel1();
+        standardBaseModel.setCode("2");
+        standardBaseModel.setCategory("NEW_CALL_STATUS");
+        standardGetQry.setStandardBaseModel(standardBaseModel);
+        String jsonStr = com.alibaba.fastjson.JSON.toJSONString(standardGetQry);
+        assertEquals("{\"standardCategory\":\"NEW_CALL_STATUS\",\"standardCode\":\"2\"}", jsonStr);
+
+        StandardGetQry1 standardGetQry2 = com.alibaba.fastjson.JSON.parseObject(jsonStr, StandardGetQry1.class);
+        assertEquals("{\"standardCategory\":\"NEW_CALL_STATUS\",\"standardCode\":\"2\"}", com.alibaba.fastjson.JSON.toJSONString(standardGetQry2));
+    }
+
+    @Data
+    public static class StandardGetQry1 {
+        /**
+         * 基础数据
+         */
+        @com.alibaba.fastjson.annotation.JSONField(unwrapped = true)
+        private StandardBaseModel1 standardBaseModel;
+    }
+
+    @Data
+    public static class StandardBaseModel1 {
+        /**
+         * 逻辑编码-标准KEY
+         */
+        @com.alibaba.fastjson.annotation.JSONField(name = "standardCode")
+        private String code;
+
+        /**
+         * 标准类别
+         */
+        @com.alibaba.fastjson.annotation.JSONField(name = "standardCategory")
+        private String category;
+    }
+}