Spring+JSF示例
JSF本身提供了强大的Bean管理功能。但Spring作为一种轻量的容器，在管理Bean方面有着不可替代的优势，使用起来很方便。在Spring流行的今天，怎么能少了在JSF中整合Spring呢？下面的示例比较简单，但也能清楚的表达如何将JSF+Spring两者互相整合起来。
整个示例，通过输入页面输入特定的字符串，在后面查找此字符串对应的数值，然后展现给客户，如果没有找到则提示错误。
一、?????? 页面
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1．输入页面：stockInput.jsp
<%@page?contentType="text/html"%><%@page?pageEncoding="UTF-8"%><%@taglib?prefix="f"?uri="http://java.sun.com/jsf/core"%><%@taglib?prefix="h"?uri="http://java.sun.com/jsf/html"%><f:view>????<html>????????<head>????????????<title>字符输入页面</title>????????</head>????????<body>????????????<h:form?id="stockForm">????????????????<h1>????????????????????请输入一个字符串，如ABC或DEF或GHI或JKL????????????????</h1>????????????????<p>????????????????????<h:inputText?id="stockSymbolInput"?value="#{stockBean.symbolName}"????????????????????????required="true">????????????????????</h:inputText>????????????????</p>????????????????<h:commandButton?id="stockSubmit"?type="submit"?value="提交"????????????????????action="#{stockBean.findStockValue}">????????????????</h:commandButton>????????????</h:form>????????</body>????</html></f:view>
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2．输出页面：stockOutputFailure.jsp
<%@page?contentType="text/html"%><%@page?pageEncoding="UTF-8"%><%@taglib?prefix="f"?uri="http://java.sun.com/jsf/core"%><%@taglib?prefix="h"?uri="http://java.sun.com/jsf/html"%><!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"><html>????<head>????????<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8">????????<title>取得字符串所对应的值</title>????</head>????<body>????????<f:view>????????????<h1>????????????????所输入的字符串????????????????<h:outputText?value="#{stockBean.symbolName}">????????????????</h:outputText>????????????????对应的值是????????????????<h:outputText?value="#{stockBean.symbolValue}">????????????????</h:outputText>????????????</h1>????????</f:view>????</body></html>?
3．错误处理页面：stockOutputFailure.jsp
<%@page?contentType="text/html"%><%@page?pageEncoding="UTF-8"%><%@taglib?prefix="f"?uri="http://java.sun.com/jsf/core"%><%@taglib?prefix="h"?uri="http://java.sun.com/jsf/html"%><!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"><html>????<head>????????<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8">????????<title>错误页面</title>????</head>????<body>????????<f:view>????????????<h1>????????????????所查找的字符串????????????????<h:outputText?value="#{stockBean.symbolName}">????????????????</h:outputText>????????????????不存在，请再次查找!????????????</h1>????????</f:view>????</body></html>?
?二、?????? 后台处理Bean
?StockValueFetcher.java
package?com.sterning.springjsf;import?java.util.*;
public?class?StockValueFetcher?{
????private?Map<String,?String>?stockSymbolsAndValues;????private?String?symbolName;????private?String?symbolValue;
????public?StockValueFetcher()?{????????stockSymbolsAndValues?=?new?HashMap<String,?String>();????????stockSymbolsAndValues.put("ABC",?"10");????????stockSymbolsAndValues.put("DEF",?"20");????????stockSymbolsAndValues.put("GHI",?"30");????????stockSymbolsAndValues.put("JKL",?"40");
????}????public?String?getSymbolName()?{????????return?symbolName;????}????public?void?setSymbolName(String?symbolName)?{????????this.symbolName?=?symbolName;????}????public?String?getSymbolValue()?{????????return?symbolValue;????}????public?void?setSymbolValue(String?symbolValue)?{????????this.symbolValue?=?symbolValue;????}????public?String?findStockValue(){????????boolean?symbolFound?=?stockSymbolsAndValues.containsKey(symbolName);????????if?(symbolFound){????????????symbolValue?=?stockSymbolsAndValues.get(symbolName);????????????return?"stockOutputSuccess";????????}else{????????????return?"stockOutputFailure";????????}????}
}
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三、?????? 配置文件
1．WEB-INF/faces-config.xml
<?xml?version='1.0'?encoding='UTF-8'?><faces-config?version="1.2"?xmlns="http://java.sun.com/xml/ns/javaee"?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?xsi:schemaLocation="http://java.sun.com/xml/ns/javaee?http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd"><application>????<variable-resolver>????????org.springframework.web.jsf.DelegatingVariableResolver????</variable-resolver></application><!--??下面的代码在没有使用Spring时起一样的作用<managed-bean>????<managed-bean-name>stockBean</managed-bean-name>????????<managed-bean-class>????????????com.sterning.springjsf.StockValueFetcher????????</managed-bean-class>????<managed-bean-scope>request</managed-bean-scope>????</managed-bean>--><navigation-rule>????<description>Navigation?from?the?hello?page.</description>????<from-view-id>/stockInput.jsp</from-view-id>????<navigation-case>????????<from-outcome>stockOutputSuccess</from-outcome>????????<to-view-id>/stockOutputSuccess.jsp</to-view-id>????</navigation-case>????<navigation-case>????????<from-outcome>stockOutputFailure</from-outcome>????????<to-view-id>/stockOutputFailure.jsp</to-view-id>????</navigation-case>????</navigation-rule></faces-config>??
?注意我使用中文注释的地方。
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2．WEB-INF/applicationContext.xml
<?xml?version="1.0"?encoding="UTF-8"?><!DOCTYPE?beans?PUBLIC?"-//SPRING//DTD?BEAN//EN""http://www.springframework.org/dtd/spring-beans.dtd"><beans><bean?id="stockBean"class="com.sterning.springjsf.StockValueFetcher"></bean>??3．WEB-INF/web.xml
<?xml?version="1.0"?encoding="UTF-8"?><web-app?version="2.5"?xmlns="http://java.sun.com/xml/ns/javaee"????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"????xsi:schemaLocation="http://java.sun.com/xml/ns/javaee?http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">????<listener>????????<listener-class>????????????org.springframework.web.context.ContextLoaderListener????????</listener-class>????</listener>????<context-param>????????<param-name>contextConfigLocation</param-name>????????<param-value>/WEB-INF/applicationContext.xml</param-value>????</context-param>????<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>/faces/*</url-pattern>????</servlet-mapping>????<session-config>????????<session-timeout>30</session-timeout>????</session-config>????<welcome-file-list>????????<welcome-file>faces/stockInput.jsp</welcome-file>????</welcome-file-list></web-app>?
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参考文献：http://www.javabeat.net/articles/2007/10/integrating-spring-and-jsf/