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());
+ }
+ }
+}