ZK Loader

Location: WEB-INF/web.xml

[Required] Class: DHtmlLayoutServlet

DHtmlLayoutServlet is a servlet used to load ZUML pages when the Web server receives URL requests sent by users.

Notice that you must specify load-on-startup since many other servlets depend on the ZK loader.

<load-on-startup>1</load-on-startup>

It is suggested to map this servlet to the zul and zhtml extensions as shown below. It is OK if you want to map xul and html, too.

	<servlet>
		<description>ZK loader for evaluating ZUML pages</description>
		<servlet-name>zkLoader</servlet-name>
		<servlet-class>org.zkoss.zk.ui.http.DHtmlLayoutServlet</servlet-class>
		<init-param>
			<param-name>update-uri</param-name>
			<param-value>/zkau</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup><!-- MUST -->
	</servlet>
	<servlet-mapping>
		<servlet-name>zkLoader</servlet-name>
		<url-pattern>*.zul</url-pattern>
	</servlet-mapping>
	<servlet-mapping>
		<servlet-name>zkLoader</servlet-name>
		<url-pattern>*.zhtml</url-pattern>
	</servlet-mapping>

The Initial Parameters

init-param	Descriptions
update-uri	[Required] It specifies the URI which the ZK AU engine is mapped to. For example, if the ZK AU engine is mapped to /zkau/*, by use of servlet-mapping, then specify /zkau for this parameter. Note: if the servlet container is used with other Web server, like Apache, you have to map this update URI to the servlet container (in additions to zul and zhtml files).
compress	[Optional][Default:true] It specifies whether to compress the output if the browser supports the compression (Accept-Encoding) and this Servlet is not included by other Servlets.
log-level	[Optional] It specifies the default log level for org.zkoss. If not specified, the system default (usually INFO) is used. Possible values: OFF, ERROR, WARNING, INFO, DEBUG and FINER. Refer to the Beyond ZK chapter in the Developer's Guide.

Version History

Version	Date	Content