springMVC入门项目demo详解编程语言

1. 引入jar包

  2. web.xml 配置 DispatcherServlet 及 springmvc.xml 的路径

 <!-- Spring MVC --> 
  <servlet> 
    <servlet-name>springServlet</servlet-name> 
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
    <init-param> 
      <param-name>contextConfigLocation</param-name> 
      <param-value>classpath*:/spring-mvc*.xml</param-value> 
    </init-param> 
    <load-on-startup>1</load-on-startup> 
  </servlet> 
  <servlet-mapping> 
    <servlet-name>springServlet</servlet-name> 
    <url-pattern>/</url-pattern> 
  </servlet-mapping>

3. spring-mvc.xml 配置

<!-- 注解扫描包 --> 
	<context:component-scan base-package="com.*" /> 
	 
	<!-- 配置视图解析 --> 
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
    	<property name="prefix" value="/WEB-INF/views/" /> 
    	<property name="suffix" value=".jsp" /> 
	</bean>

4.  编写 controller 类

package com.web; 
 
import org.springframework.stereotype.Controller; 
import org.springframework.ui.Model; 
import org.springframework.web.bind.annotation.RequestMapping; 
 
@Controller 
@RequestMapping(value = "/helloworld") 
public class HelloWorldController{ 
 
	@RequestMapping(value="sayHello") 
	public String  sayHello(Model model){ 
		model.addAttribute("hello", "helloworld"); 
		return "/modules/helloworld"; 
		 
	}  
}

5. 访问；

<a href="/springmvc-helloworld/helloworld/sayHello">sayHello</a>

6. 显示：

${hello}

7. 结果：

源码