fix: add serialVersionUID to JSONArray in fastjson1-compatible for Java serialization compatibility

fastjson1-compatible/src/main/java/com/alibaba/fastjson/JSONArray.java

@@ -27,6 +27,8 @@ public class JSONArray
     static ObjectReader<JSONArray> arrayReader;
     static ObjectReader<JSONObject> objectReader;
 
+    private static final long serialVersionUID = 1L;
+
     private List list = new com.alibaba.fastjson2.JSONArray();
 
     protected transient Object relatedArray;

fastjson1-compatible/src/test/java/com/alibaba/fastjson/JSONArrayTest_readObject.java

@@ -0,0 +1,62 @@
+package com.alibaba.fastjson;
+
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.ObjectStreamClass;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class JSONArrayTest_readObject {
+    @Test
+    public void test_serialVersionUID() {
+        ObjectStreamClass desc = ObjectStreamClass.lookup(JSONArray.class);
+        assertEquals(1L, desc.getSerialVersionUID());
+    }
+
+    @Test
+    public void test_0() throws Exception {
+        JSONArray jsonArray = new JSONArray();
+        jsonArray.add(123);
+        jsonArray.add("hello");
+        jsonArray.add(new JSONObject());
+
+        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
+        ObjectOutputStream objOut = new ObjectOutputStream(bytesOut);
+        objOut.writeObject(jsonArray);
+        objOut.flush();
+
+        byte[] bytes = bytesOut.toByteArray();
+
+        ByteArrayInputStream bytesIn = new ByteArrayInputStream(bytes);
+        ObjectInputStream objIn = new ObjectInputStream(bytesIn);
+
+        Object obj = objIn.readObject();
+
+        assertEquals(JSONArray.class, obj.getClass());
+        assertEquals(jsonArray, obj);
+    }
+
+    @Test
+    public void test_1() throws Exception {
+        JSONArray jsonArray = JSON.parseArray("[1,2,3,{\"id\":123}]");
+
+        ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
+        ObjectOutputStream objOut = new ObjectOutputStream(bytesOut);
+        objOut.writeObject(jsonArray);
+        objOut.flush();
+
+        byte[] bytes = bytesOut.toByteArray();
+
+        ByteArrayInputStream bytesIn = new ByteArrayInputStream(bytes);
+        ObjectInputStream objIn = new ObjectInputStream(bytesIn);
+
+        Object obj = objIn.readObject();
+
+        assertEquals(JSONArray.class, obj.getClass());
+        assertEquals(jsonArray, obj);
+    }
+}