fix add message tip when OutOfMemory occurred for issue #2323

core/src/main/java/com/alibaba/fastjson2/JSONWriterJSONB.java

@@ -853,7 +853,7 @@ void ensureCapacity(int minCapacity) {
                 newCapacity = minCapacity;
             }
             if (newCapacity > maxArraySize) {
-                throw new OutOfMemoryError();
+                throw new OutOfMemoryError("try enabling LargeObject feature instead");
             }
 
             // minCapacity is usually close to size, so this is a win:

core/src/main/java/com/alibaba/fastjson2/JSONWriterUTF16.java

@@ -1970,7 +1970,7 @@ final void ensureCapacity(int minCapacity) {
                 newCapacity = minCapacity;
             }
             if (newCapacity - maxArraySize > 0) {
-                throw new OutOfMemoryError();
+                throw new OutOfMemoryError("try enabling LargeObject feature instead");
             }
 
             // minCapacity is usually close to size, so this is a win:

core/src/main/java/com/alibaba/fastjson2/JSONWriterUTF8.java

@@ -1996,7 +1996,7 @@ final void ensureCapacity(int minCapacity) {
                 newCapacity = minCapacity;
             }
             if (newCapacity - maxArraySize > 0) {
-                throw new OutOfMemoryError();
+                throw new OutOfMemoryError("try enabling LargeObject feature instead");
             }
 
             // minCapacity is usually close to size, so this is a win:

core/src/test/java/com/alibaba/fastjson2/issues_2300/Issue2323.java

@@ -0,0 +1,51 @@
+package com.alibaba.fastjson2.issues_2300;
+
+import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONWriter;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+import java.util.Map;
+
+public class Issue2323 {
+    String errMsg = "try enabling LargeObject feature instead";
+
+    @Test
+    public void test() throws Exception {
+        int size = 50;
+
+        List<JSONObject> dataList2 = Lists.newArrayList();
+        for (int rowIndex = 1; rowIndex <= 50000; rowIndex++) {
+            JSONObject data = new JSONObject();
+            for (int i = 0; i < size; i++) {
+                data.put("test" + i, "testdata");
+            }
+            dataList2.add(data);
+        }
+
+        Map<String, String> params = Maps.newHashMap();
+        params.put("dataListStr", JSON.toJSONString(dataList2));
+
+        try {
+            JSONWriter.ofUTF16().write(params);
+        } catch (OutOfMemoryError error) {
+            Assertions.assertEquals(errMsg, error.getMessage());
+        }
+
+        try {
+            JSONWriter.ofUTF8().write(params);
+        } catch (OutOfMemoryError error) {
+            Assertions.assertEquals(errMsg, error.getMessage());
+        }
+
+        try {
+            JSONWriter.ofJSONB().write(params);
+        } catch (OutOfMemoryError error) {
+            Assertions.assertEquals(errMsg, error.getMessage());
+        }
+    }
+}