My Chinese characters change to question marks in an email

Question

I retrieve a value from a DB field which looks like two boxes [][] in the sql/developer. When I copy and paste that value to outlook (new message window) and send it to myself I can see the correct Chinese characters in the email 测试.

However If I do that via java code, meaning retrieve the value from db and send the email from java I get two ?? question marks in the resulting email in outlook.

The original setting in java code was:

Content-Type: text/plain;

I also tried to send the email with these settings:

Content-Type: text/plain; charset=UTF-8
Content-Type: text/html; charset=UTF-8

Nothing helped. Any ideas?

Answer 1

您还需要将连接编码设置为utf-8

jdbc:mysql://localhost/some_db?characterEncoding=UTF-8

Answer 2

Try changing it in your control panel

Control Panel -> Regional and Language Options