Large JSON Objects cannot be properly serialized and result in UTFDataFormatException

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 DXP SP1
• Fix Version/s: 6.2.X EE, 7.0.0 DXP FP3, 7.0.0 DXP SP1, Master
• Component/s: Legacy Components, Legacy Components > API
• Labels:
  • ee-ts
  • liferay-digital-enterprise-70-sp1
  • liferay-fixpack-de-3-7010
  • liferay-fixpack-portal-119-6210
• Branch Version/s:
  7.0.x, 6.2.x
• Backported to Branch:
  Committed
• Story Points: 1
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/42846

Description:
If a JSONObject.toString() results in a string larger than 65535 characters and the JSONObject is being serialized, an UTFDataFormatExeption is thrown.
It looks like this is because JSONObjectImpl.writeExternal uses objectOutput.writeUTF which has a hard limit of 65535 bytes. There's a similar constraint in readInternal.

This issue is reproduced with JSONArray as well.

Steps to Reproduce:

1. Start a Liferay Instance.
2. Navigate to Control Panel > Server Administration > Script.
3. Run the attached Groovy Script: test_jsonobject_jsonarray_externalizable.groovy

Expected:
Script runs successfully for both JSONObject and JSONArray.

Actual:
Script fails: java.io.UTFDataFormatException