Spring+JSF集成入门案例

来源：互联网发布：2016淘宝客不计入销量编辑：程序博客网时间：2024/05/18 15:30

JSF本身对于Bean的管理有依赖注入的功能，不过Spring的IOC容器能提供更多的功能，另一方面Spring还有AOP框架，在事务处理上也可提供协助

JSF和Spring结合，主要目的就是让Spring的Bean名称可以被JSF视<managed-bean-name>标签上的名称来使用，也就是说可以当JSF定义文件中根据名称要求Bean实例时，若JSF 在自己的Context中找不到名称，可以尝试到Spring的Context中去寻找

UserManager.java 模拟一个业务类

public class UserManager {

public String getChangedName(String name){

return "hello "+name;

}

User.java

public class User {

private String name;

private UserManager userManager;

public String getName() {

return name;

}

public void setName(String name) {

this.name = userManager.getChangedName(name);

}

public UserManager getUserManager() {

return userManager;

}

public void setUserManager(UserManager userManager) {

this.userManager = userManager;

}

JSF配置文件：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE faces-config PUBLIC

"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.0//EN"

"http://java.sun.com/dtd/web-facesconfig_1_0.dtd">

<faces-config>

<variable-resolver>

org.springframework.web.jsf.DelegatingVariableResolver

</variable-resolver>

</application>

<navigation-rule>

<from-view-id>/index.jsp</from-view-id>

<navigation-case>

<from-outcome>login</from-outcome>

<to-view-id>/welcome.jsp</to-view-id>

</navigation-case>

</navigation-rule>

<managed-bean>

<managed-bean-name>user</managed-bean-name>

<managed-bean-class>User</managed-bean-class>

<managed-bean-scope>session</managed-bean-scope>

<managed-property>

<property-name>userManager</property-name>

<value>#{userManager}</value>

</managed-property>

</managed-bean>

</faces-config>

Spring配置文件

<?xml version="1.0" encoding="UTF-8"?>

<beans

xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

</beans>

实际上在JSF的定义文件中并没有定义userManager的bean实例，当JSF找不到userManager时候，会使用DelegatingVariableResolver对象在Spring的Context中寻找同名的bean实例

web.xml

<?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>contextConfigLocation</param-name>

<param-value>/WEB-INF/mvc-config.xml</param-value>

</context-param>

<!--

<context-param>

<param-name>javax.faces.CONFIG_FILES</param-name>

<param-value>/WEB-INF/faces-config.xml</param-value>

</context-param>

-->

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<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>

</web-app>

index.jsp

<%@ page language="java" pageEncoding="GB18030"%>

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<html>

<head>

</head>

<body>

<f:view>

<h:form>

name:<h:inputText value="#{user.name}"></h:inputText>

<h:commandButton value="csubmit" action="login"></h:commandButton>

</h:form>

</f:view>

</body>

</html>

welcom.jsp

<%@ page language="java" pageEncoding="GB18030"%>

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<html>

<head>

</head>

<body>

<f:view>

<h:outputText value="#{user.name}"></h:outputText>

</f:view>

</body>

</html>

运行index.faces JSF会自动跳转到index.jsp