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| 改变组件属性 |
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//This example is from Jakub Czeczotka <jakub.czeczotka>
//web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>
ChangeBeanProperty
</display-name>
<description>
Change a property of a simple bean
</description>
<listener>
<listener-class>
org.apache.myfaces.webapp.StartupServletContextListener
</listener-class>
</listener>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
//faces-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE faces-config PUBLIC "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
"http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<faces-config>
<managed-bean>
<managed-bean-name>simpleBean</managed-bean-name>
<managed-bean-class>eu.czeczotka.SimpleBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>
//SimpleBean.java
package eu.czeczotka;
import java.util.logging.Logger;
/**
* Simple bean for the ChangeBeanProperty project
*
* @author Jakub Czeczotka
*/
public class SimpleBean {
private Logger logger = Logger.getLogger ("eu.czeczotka.SimpleBean");
private String property = "initial value";
public String getProperty () {
return this.property;
}
public void setProperty (String property) {
logger.info ("changing property value from \"" +
this.property + "\" to \"" + property + "\"");
this.property = property;
}
}
//index.jsp
<% response.sendRedirect("changeBeanProperty.jsf"); %>
//changeBeanProperty.jsp
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%-- ChangeBeanProperty - author Jakub Czeczotka --%>
<html>
<head>
<title>ChangeBeanProperty</title>
</head>
<body>
<f:view>
<h:form>
<h3>Change a property of a simple bean</h3><br />
<h:inputText value="#{simpleBean.property}" />
<h:commandButton type="submit" value="change value" action="#" />
</h:form>
</f:view>
</body>
</html>
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 ChangeBeanProperty.zip( 2,264 k) |
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