fix change to isInt for ObjectReaderImplEnum, for issue #2682

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

@@ -268,7 +268,7 @@ public Object readObject(JSONReader jsonReader, Type fieldType, Object fieldName
                         // ignored
                     }
                 }
-            } else if (intValues != null && jsonReader.isString()) {
+            } else if (intValues != null && jsonReader.isInt()) {
                 int intValue = jsonReader.readInt32Value();
                 for (int i = 0; i < intValues.length; i++) {
                     if (intValues[i] == intValue) {

core/src/test/java/com/alibaba/fastjson2/issues_2600/Issue2682.java

@@ -0,0 +1,50 @@
+package com.alibaba.fastjson2.issues_2600;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.annotation.JSONField;
+import com.baomidou.mybatisplus.annotation.EnumValue;
+import com.baomidou.mybatisplus.annotation.IEnum;
+import lombok.Data;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class Issue2682 {
+    @Test
+    public void test() {
+        String str = "{\"bizType\":\"common\"}";
+        VM vm = JSON.parseObject(str, VM.class);
+        assertEquals(BizType.COMMON, vm.getBizType());
+    }
+
+    @Data
+    public static class VM {
+        private BizType bizType;
+    }
+
+    public enum BizType
+            implements IEnum<String> {
+        COMMON("common", "通用");
+
+        BizType(String value, String name) {
+            this.value = value;
+            this.name = name;
+        }
+
+        @EnumValue
+        private final String value;
+        private final String name;
+
+        @JSONField(value = true)
+        public String getValue() {
+            return value;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public static void test123() {
+        }
+    }
+}