1. Let's look at the final effect first. Enter http://localhost:8080/FirstSpringMVCPro/welcome.html in the browser address bar, and the result is as follows:
2. It takes 4 steps to achieve the above results. Next, we will explain them one by one.
2.1 Modify the web.xml file, the modified content is as follows:
<?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 Create the spring-dispatcher-servlet.xml file in the WEB-INF folder with the following contents:
<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 Create a new class HelloController.java in the src directory and extend the AbstractController class (org.springframework.web.servlet.mvc.AbstractController). In the handleRequestInternal method, enter the following:
ModelAndView modelandview = new ModelAndView("HelloPage");
modelandview.addObject("welcomeMessage","Hi, this is first spring mvc application");
return modelandview;
2.4 Create a new jsp file HelloPage.jsp in the WEB-INF directory, the content of the file is:
<html>
<body>
<h1>First Spring MVC Application Demo</h1>
<h2>${welcomeMessage}</h2>
</body>
</html>
Finally, put the project into the tomcat server to run, and enter http://localhost:8080/FirstSpringMVCPro/welcome.html in the browser to get the expected result