Content type of the files is processed, while encoding split with a semi-colon character is optional.
Consider this example:
<parameter name="transport.vfs.ContentType"> text/xml;charset=UTF-8</parameter>
If we want to change the content type of the file after processing it, we can use the following property in our service:
<property name="CHARACTER_SET_ENCODING" value="UTF-8" scope="axis2" type="STRING"/>