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jsf的一個簡單的例子

You usually set up your web application as you would do with any other JSF web application. The following sample configuration files show you how to enable the above mentioned features.

The web.xml configuration:

WEB-INF/web.xml

<?xml version="1.0"?>
<!DOCTYPE web-app PUBLIC
  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
    <!--
        The filter used to publish RequestHandledEvent to Spring.
        Should be mapped to the same url pattern than the FacesServlet.
    -->
    <filter>
        <filter-name>RequestHandled</filter-name>
        <filter-class>de.mindmatters.faces.spring.RequestHandledFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>RequestHandled</filter-name>
        <url-pattern>/faces/*</url-pattern>
    </filter-mapping>
    
    <!--
        The listener used to load the parent application context (the spring beans).
    -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--
        The declaration of your FacesServlet.
        Map it to whatever url pattern you like.
    -->
    <servlet>
        <servlet-name>FacesServlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>FacesServlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
</web-app>

A web.xml configuration with net.sourceforge.myfaces JSF-implementation 1.0.2 (because an internal spring-based VariableResolver is used a few features which are not supported by MyFaces yet, e.g. list-entries, map-entries..., are enabled):

WEB-INF/web.xml

<?xml version="1.0"?>
<!DOCTYPE web-app PUBLIC
  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
    <!--
        The filter used to publish RequestHandledEvent to Spring.
        Should be mapped to the same url pattern than the FacesServlet.
    -->
    <filter>
        <filter-name>RequestHandled</filter-name>
        <filter-class>org.springframework.web.jsf.RequestHandledFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>RequestHandled</filter-name>
        <url-pattern>/faces/*</url-pattern>
    </filter-mapping>
    
    <!--
        The listener used to load the parent application context (the spring beans).
    -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--
        The declaration of MyFaces startup-listener.
    -->
    <listener>
        <listener-class>net.sourceforge.myfaces.webapp.StartupServletContextListener</listener-class>
    </listener>

    <!--
        The declaration of your FacesServlet.
        Map it to whatever url pattern you like.
    -->
    <servlet>
        <servlet-name>FacesServlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>FacesServlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
</web-app>

Example

In this example, we just use two beans:

example.NameBean
with one property:
- name
and two methods that receive JSF events:
- public void action(ActionEvent event)
- public void valueChanged(ValueChangeEvent event)
example.ReferencingBean
with one property:
- referencedBean

WEB-INF/faces-config.xml (partial)

<!-- a purely JSF managed bean -->
<managed-bean>
    <managed-bean-name>jsfBean</managed-bean-name>
    <managed-bean-class>example.NameBean</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
    <managed-property>
        <property-name>name</property-name>
    </managed-property>
</managed-bean>

<!-- a de.mindmatters.faces.spring.SpringBeanFactory used to define the scope of a Spring managed bean -->
<managed-bean>
    <managed-bean-name>scopedAccessSpringBean</managed-bean-name>
    <managed-bean-class>de.mindmatters.faces.spring.SpringBeanFactory</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
</managed-bean>

<!-- a purely JSF managed bean that holds a reference to a Spring managed bean -->
<managed-bean>
    <managed-bean-name>referencingBean</managed-bean-name>
    <managed-bean-class>example.ReferencingBean</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
    <managed-property>
        <property-name>referencedBean</property-name>
        <value>#{managedPropertyAccessSpringBean}</value>
    </managed-property>
</managed-bean>

WEB-INF/applicationContext.xml (partial)

<!-- a purely Spring managed bean -->
<bean id="directAccessSpringBean" class="example.NameBean"/>

<!-- a Spring managed bean supplied with a scope within JSF -->
<bean id="scopedAccessSpringBean" class="example.NameBean" singleton="false"/>

<!--
    a purely Spring managed bean being referenced by a JSF managed bean
    (but which of course can be accessed directly as well)
->
<bean id="managedPropertyAccessSpringBean" class="example.NameBean" singleton="false"/>

test.jsp

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<html>
    <head><title>test</title></head>
    <body bgcolor="white">
        <f:view>
            <h:messages/>
            <h:form>
                purely JSF managed bean:
                <h:inputText value="#{jsfBean.name}"
                             valueChangeListener="#{jsfBean.valueChanged}"/>
                <h:commandButton value="action"
                                 actionListener="#{jsfBean.action}"/>
                <br/>
                purely Spring managed bean:
                <h:inputText value="#{directAccessSpringBean.name}"
                             valueChangeListener="#{directAccessSpringBean.valueChanged}"/>
                <h:commandButton value="action"
                                 actionListener="#{directAccessSpringBean.action}"/>
                <br/>
                scoped Spring managed bean:
                <h:inputText value="#{scopedAccessSpringBean.name}"
                             valueChangeListener="#{scopedAccessSpringBean.valueChanged}"/>
                <h:commandButton value="action"
                                 actionListener="#{scopedAccessSpringBeanaction}"/>
                <br/>
                referenced Spring managed bean:
                <h:inputText value="#{referencingBean.referencedBean.name}"
                             valueChangeListener="#{referencingBean.referencedBean.valueChanged}"/>
                <h:commandButton value="action"
                                 actionListener="#{referencingBean.referencedBean.action}"/>
                <br/>
                <h:commandButton id="submit" action="save" value="save"/>
            </h:form>
        </f:view>
    </body>
</html>

posted on 2005-10-15 21:14 小叉閱讀(424) 評論(0) 編輯收藏所屬分類: jsf

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