eclipse不显示汉字

From Eclipse, I am running a PHP script which has an embedded call to a cloud mySQL stored procedure.

mySQL Workbench can store and display Chinese characters correctly.

Eclipse returns the dataset correctly in English, but Chinese characters cannot be displayed properly.

This is what I 've tried so far:

1. In mySQL, I created the table with this specification:
   ENGINE=INNODB AUTO_INCREMENT= 2468 CHARACTER SET utf8 COLLATE utf8_general_ci;

2. In the PHP script, I specified the header like this:
   header("Content-type:application/json; charset=utf-8");

3. The response from executing sproc is json_encoded, like this:
   echo json_encode(array("db_response"=>$response));
4. And in Eclipse, I've set the preference to UTF-8, like this:
   in Window > Preferences: General > Workspace set file encoding to Other UTF-8

Chinese characters are displayed like this: ??????(??)????

Can anyone point me in the right direction, please?

Is there some other fonts I need to download and install in Eclipse? If so, which one?