org.zkoss.zk.au.AuWriters.ContentType
From Documentation
Property:
org.zkoss.zk.au.AuWriters.ContentType
Applicable: globally in zk.xml via <library-property> not as <custom-attribute>
Default: text/plain;charset=UTF-8
Since 8.5.2
It specifies the Content-Type of the AU response.
For example:
<library-property>
<name>org.zkoss.zk.au.AuWriters.ContentType</name>
<value>json/application;charset=UTF-8</value>
</library-property>