废话少讲。下面是web.xml的内容
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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">
<!-- 设置DispatcherServlet类的位置和加载参数-->
<servlet>
<servlet-name>springapp</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!--设置DispatcherServlet拦截模式 -->
<servlet-mapping>
<servlet-name>springapp</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<!--欢迎页-->
<welcome-file-list>
<welcome-file>
index.jsp
</welcome-file>
</welcome-file-list>
<!--标签库 -->
<taglib>
<taglib-uri>fmt</taglib-uri>
<taglib-location>/WEB-INF/lib/fmt.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>core-rt</taglib-uri>
<taglib-location>/WEB-INF/lib/c-rt.tld</taglib-location>
</taglib>
</web-app>
org.springframework.web.servlet.DispatcherServlet的需要一个名字为web.xml中servlet-name和-servlet.xml的配置文件。本例的为springapp-servlet.xml.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<!--
- Application context definition for "springapp" DispatcherServlet.
-->
<beans>
<!--对应于web.SpringappController.java-->
<bean id="springappController" class="web.SpringappController">
<property name="productManager">
<ref bean="prodMan"/>
</property>
</bean>
<!--对应于bus.ProductManager.java-->
<bean id="prodMan" class="bus.ProductManager">
<property name="products">
<list>
<ref bean="product1"/>
<ref bean="product2"/>
<ref bean="product3"/>
</list>
</property>
</bean>
<!--product1,product2,product3为测试样例-->
<bean id="product1" class="bus.Product">
<property name="description"><value>Lamp</value></property>
<property name="price"><value>5.75</value></property>
</bean>
<bean id="product2" class="bus.Product">
<property name="description"><value>Table</value></property>
<property name="price"><value>75.25</value></property>
</bean>
<bean id="product3" class="bus.Product">
<property name="description"><value>Chair</value></property>
<property name="price"><value>22.79</value></property>
</bean>
<!--资源定义-->
<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename"><value>messages</value></property>
</bean>
<!--URL映射配置-->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/hello.htm">springappController</prop>
</props>
</property>
</bean>
<!--内部资源视图解析器-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"><value>org.springframework.web.servlet.view.JstlView</value></property>
<property name="prefix"><value>/WEB-INF/jsp/</value></property>
<property name="suffix"><value>.jsp</value></property>
</bean>
</beans>
资源文件为messages.properties
title=SpringApp
heading=Hello :: SpringApp
greeting=Greetings, it is now
SpringappController.java的代码片段
public class SpringappController implements Controller {
/** Logger for this class and subclasses */
protected final Log logger = LogFactory.getLog(getClass());
private ProductManager prodMan;
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String now = (new java.util.Date()).toString();
logger.info("======="+request.getRealPath("/"));
logger.info("returning hello view with " + now);
Map myModel = new HashMap();
myModel.put("now", now);
myModel.put("products", getProductManager().getProducts());
return new ModelAndView("hello", "model", myModel);
}
public void setProductManager(ProductManager pm) {
prodMan = pm;
}
public ProductManager getProductManager() {
return prodMan;
}
}
return new ModelAndView("hello", "model", myModel);这句话根据内部资源视图解析器定位到>/WEB-INF/jsp/hello.jsp
<%@ include file="/WEB-INF/jsp/include.jsp" %>
<html>
<head><title><fmt:message key="title"/></title></head>
<body>
<h1><fmt:message key="heading"/></h1>
<p><fmt:message key="greeting"/><c:out value="${model.now}"/>
</p>
<h3>Products</h3>
<c:forEach items="${model.products}" var="prod">
<c:out value="${prod.description}"/> <i>$<c:out value="${prod.price}"/></i><br><br>
</c:forEach>
</body>
</html>
include.jsp提供标签定义,他的内容为:
<%@ page session="false"%>
<%@ page isELIgnored="false" %>
<%@ taglib prefix="c" uri="core-rt" %>
<%@ taglib prefix="fmt" uri="fmt" %>
注意:
可能需要一个log4j.properties的支持.另外在配置标签库的时候,可能存在版本兼容问题,本例采用了standerd.jar中的c-rt.tld
需要的资源:
spring.jar最好用最新的.
jstl.jar JSP Standard Tag Library (JSTL)库
standard.jar JSTL的支持包
log4j1.2.8.jar
common_logging.jar本例用的就是这个
servlet-api.jar
