BlogJava--随笔分类-jsfhttp://www.blogjava.net/cssseek/category/8740.html揽住母亲的肩头,敬父亲一杯酒,对爱的女人说“我爱你”,和另外一个男人打架,不要打女人,有一个自己的孩子,年轻的时候去漂泊,有自己的一份事业. zh-cnFri, 02 Mar 2007 03:32:42 GMTFri, 02 Mar 2007 03:32:42 GMT60jsf实例(Hello)http://www.blogjava.net/cssseek/archive/2006/03/21/36663.htmlcssseekcssseekTue, 21 Mar 2006 09:50:00 GMThttp://www.blogjava.net/cssseek/archive/2006/03/21/36663.htmlhttp://www.blogjava.net/cssseek/comments/36663.htmlhttp://www.blogjava.net/cssseek/archive/2006/03/21/36663.html#Feedback1http://www.blogjava.net/cssseek/comments/commentRss/36663.htmlhttp://www.blogjava.net/cssseek/services/trackbacks/36663.html      JSF的开发,核心是事件驱动，组件和标签的封装程度非常高，很多典型应用已经不需要开发者去处理http。页面操作会被自动映射到对应的java bean中，后台逻辑只需要同java bean发生交互。整个过程是通过“依赖注入(DI)”来实现的，其设计思想与spring相似。
      下面实例所用的东东包括：Eclipse3.1+MyEclipse4.1,   tomcat5.0,   jstl 1.1,  jsf  。
SayHello 类
package org.cssseek.jsf.model.hello;

public class SayHello {
    public String say(String name)
    {
        return "你好,"+name;
    }
}


HelloDelegater 类
package org.cssseek.jsf.control.hello;

import org.cssseek.jsf.model.hello.*;

public class HelloDelegater {
   
    //------属性---------
    private String name;//表单中的文本框数据会传到这里
    private String result;//web页会从这里取得运行结果
    private SayHello sayHello;//model层的对象,并不事例化,由系统注入
   
    //-----set/get--------
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public SayHello getSayHello() {
        return sayHello;
    }
    public void setSayHello(SayHello sayHello) {
        this.sayHello = sayHello;
    }
    public String getResult() {
        return result;
    }
    public void setResult(String result) {
        this.result = result;
    }
   
    //-----逻辑方法---------
    public String say()
    {
        this.setResult(sayHello.say(this.getName()));
        return "ok";
    }
}

index.jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
   
    <title>My JSP 'index.jsp' starting page</title>
   
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
   
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
 <body>
    <f:view>
        <h:form>
            <h:panelGrid columns="3">
                <h:outputLabel for="name" value="姓名:"/>
                <h:inputText id="name" value="#{HelloDelegater.name}" required="true"/>
                <h:message for="name"/>
               
                <h:outputLabel value="#{HelloDelegater.result}"/>
            </h:panelGrid>
            <h:panelGroup>
                <h:commandButton action="#{HelloDelegater.say}" value="提交"/>
            </h:panelGroup>
        </h:form>
    </f:view>
  </body>
</html>

faces-config.xml文件

<?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>SayHello</managed-bean-name>
        <managed-bean-class>
            org.cssseek.jsf.model.hello.SayHello
        </managed-bean-class>
        <managed-bean-scope>request</managed-bean-scope>
    </managed-bean>
    <managed-bean>
        <managed-bean-name>HelloDelegater</managed-bean-name>
        <managed-bean-class>
            org.cssseek.jsf.control.hello.HelloDelegater
        </managed-bean-class>
        <managed-bean-scope>request</managed-bean-scope>
        <managed-property>
            <property-name>sayHello</property-name>
            <value>#{SayHello}</value>
        </managed-property>
    </managed-bean>
 
</faces-config>


web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <context-param>
    <param-name>javax.faces.CONFIG_FILES</param-name>
    <param-value>/WEB-INF/faces-config.xml</param-value>
  </context-param>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
  </servlet-mapping>
</web-app>

因为我们在url pattern中选择了*.faces,所以我们应该访问如下地址来查看程序:
http://localhost:8080/hellojsfdemo/index.faces

这个实例就到此结束啦。具体操作这里就没有详细写出来，读者自己看看吧。






cssseek 2006-03-21 17:50 发表评论
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