Spring+JSF示范 _JavaScript

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

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 >

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 " ;

????????}

????}

}

????

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。

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 >

参考文献： http://www.javabeat.net/articles/2007/10/integrating-spring-and-jsf/