【发布时间】：2011-05-25 08:24:13
【问题描述】：
我有一个使用 Icefaces 1.8.2 和 jsf 1.1 开发的小型 Web 应用程序，它部署到 Oracle 应用服务器 10.1.3。我注意到最初加载应用程序需要一段时间，一旦加载速度令人满意。
如何提高应用程序的初始加载时间？
更新 1
我在后端需要 2-3 秒的查询，但是当我在前端渲染相同的查询时，它需要将近 7 秒。行数只有 1080。我在数据表中呈现这些记录。这可能是什么原因？
更新 2
web.xml
<web-app xmlns="http://java.sun.com/xml/ns/j2ee/web-app_2_3.xsd">
<context-param>
<param-name>com.icesoft.faces.debugDOMUpdate</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
<description>State saving method: "client" or "server" (= default) See JSF Specification
2.5.2</description>
</context-param>
<context-param>
<param-name>com.icesoft.faces.concurrentDOMViews</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>com.icesoft.faces.synchronousUpdate</param-name>
<param-value>true</param-value>
</context-param>
<context-param>
<param-name>com.icesoft.faces.connectionTimeout</param-name>
<param-value>100000</param-value>
</context-param>
<context-param>
<param-name>com.icesoft.faces.standardRequestScope</param-name>
<param-value>false</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.redirectTracker.POLICY</param-name>
<param-value>org.apache.myfaces.custom.redirectTracker.policy.FullRedirectTrackPolicy</param-value>
</context-param>
<context-param>
<param-name>webAppRootKey</param-name>
<param-value>app1</param-value>
</context-param>
<!-- Faces Servlet -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>Persistent Faces Servlet</servlet-name>
<servlet-class>com.icesoft.faces.webapp.xmlhttp.PersistentFacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>Blocking Servlet</servlet-name>
<servlet-class>com.icesoft.faces.webapp.xmlhttp.BlockingServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- extension mapping -->
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Persistent Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Persistent Faces Servlet</servlet-name>
<url-pattern>*.jspx</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Persistent Faces Servlet</servlet-name>
<url-pattern>*.iface</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Persistent Faces Servlet</servlet-name>
<url-pattern>/xmlhttp/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Blocking Servlet</servlet-name>
<url-pattern>/block/*</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>10000</session-timeout>
</session-config>
<!-- Welcome files -->
<welcome-file-list>
<welcome-file>index.jsf</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
<listener>
<listener-class>com.icesoft.faces.util.event.servlet.ContextEventRepeater</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Spring Security -->
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.2.xsd">
<security:authentication-manager alias="_authenticationManager" />
<bean id="authenticationProvider"
class="com.icesoft.icefaces.security.UserDetailsAuthenticationProvider">
<security:custom-authentication-provider/>
<property name="userDetailsService" ref="userDetailsService"/>
</bean>
<bean id="userDetailsService" class="com.icesoft.icefaces.security.UserDetailsServiceImpl">
<constructor-arg ref="userRepository"/>
</bean>
<bean id="userRepository"
class="com.icesoft.icefaces.security.UserDaoImpl"/>
<bean id="ntlmFilter" class="org.springframework.security.ui.ntlm.NtlmProcessingFilter">
<security:custom-filter position="NTLM_FILTER"/>
<property name="stripDomain" value="true"/>
<property name="defaultDomain" value="XYZ"/>
<property name="authenticationManager" ref="_authenticationManager" />
</bean>
<bean id="ntlmEntryPoint"
class="org.springframework.security.ui.ntlm.NtlmProcessingFilterEntryPoint">
<property name="authenticationFailureUrl" value="/accessDenied.jspx"/>
</bean>
<bean id="exceptionTranslationFilter"
class="org.springframework.security.ui.ExceptionTranslationFilter">
<property name="authenticationEntryPoint" ref="ntlmEntryPoint"/>
</bean>
<security:http access-denied-page="/denied.xhtml" entry-point-ref="ntlmEntryPoint"
servlet-api-provision="false">
<security:intercept-url pattern="/accessDenied.jspx" filters="none"/>
<security:intercept-url pattern="/**" access="ROLE_USER"/>
</security:http>
</beans>
感谢任何帮助。 谢谢
【问题讨论】：
-
你测试了哪些浏览器？ MSIE 存在严重的 HTML 表格呈现问题。
-
我在 MSIE 和 Firefox 中进行了测试，这两种浏览器几乎都需要 7 秒来加载页面。
-
好的，不包括客户端。留下带宽（除了在单个页面中一次显示 1K 行的奇怪要求之外，谁会查看它们全部？）。容器 GZIP 压缩是否开启？
-
@BalusC 我不知道 GZIP 压缩，这是我们需要在应用服务器中打开它的东西？
-
是的。它可以节省高达 70% 的带宽，并且每个自尊的网络浏览器都支持它。例如，在 Tomcat 中，只需在
/conf/server.xml的<Connector>元素中设置compression="on"。试一试。
标签： web-applications jsf icefaces