Form Data Provider shows wrong character encoding

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, Master
• Fix Version/s: 7.0.0 DXP FP40, 7.0.0 DXP SP7, 7.0.5 CE GA6, 7.0.X, 7.1.0 M1, 7.1.X, Master
• Component/s: Dynamic Data Mapping > Form Builder
• Labels:
  • ee-ts
  • liferay-digital-enterprise-70-sp7
  • liferay-fixpack-de-40-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/54840

Data Providers are showing wrong characters in forms. Basically, seems like json WS call is bringing json data with an encoding different than UTF-8.

Steps to reproduce in master/7.0.x:

1. Start a portal and login with administrator user.
2. Create user with firstName field value: 'jamón'
3. Create a data provider (#adding-and-configuring-a-data-provider) adding next configuration:

   Field	Value
   Name	dp example
   URL	http://localhost:8080/api/jsonws/user/get-company-users/company-id/20100/start/-1/end/-1
   User Name	Admin user, e.g.: [e-mail]
   Password	Admin password

   Only in master Inside 'Outputs section':

   Field	Value
   Label	id
   Path	firstName
   Type	List

   Only in 7.0.x:

   Field	Value
   Displayed JSON Attribute	firstName
   Stored JSON Attribute	id

4. Create a form using data provider as a 'select' field (#using-a-data-provider-in-a-select-field)
5. Create new page; Add form application; and select new form created in step 4.

Expected behavior:
Select field shows option field 'jamón' with correct characters.
Actual behavior:
 Select field shows option field 'jamón' but 'o´' character is wrong.