1. 我们先看最终效果。在浏览器地址栏输入http://localhost:8080/FirstSpringMVCPro/welcome.html,获得结果如下:
2. 实现以上结果需要4步,接下来,将一一讲解
2.1 修改web.xml文件,修改后的内容如下:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>FirstSpringMVCPro</display-name>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
2.2 在WEB-INF文件夹下创建spring-dispatcher-servlet.xml文件,文件内容如下:
<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-2.5.xsd">
<bean id="HandlerMapping"
class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<bean name="/welcome.html" class="com.haha.HelloController"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>
2.3 在src目录下新建类HelloController.java,扩展AbstractController类(org.springframework.web.servlet.mvc.AbstractController)在handleRequestInternal方法中,输入以下内容:
ModelAndView modelandview = new ModelAndView("HelloPage");
modelandview.addObject("welcomeMessage","Hi, this is first spring mvc application");
return modelandview;
2.4 在WEB-INF目录下新建jsp文件HelloPage.jsp,文件内容为:
<html>
<body>
<h1>First Spring MVC Application Demo</h1>
<h2>${welcomeMessage}</h2>
</body>
</html>
最后将项目放入tomcat服务器运行,在浏览器中输入http://localhost:8080/FirstSpringMVCPro/welcome.html就能得到预期的结果