使用注解开发SpringMVC

使用注解开发SpringMVC

环境搭建

注意l添加依赖后要在项目结构中，在WEB-INF添加lib导入依赖

在l注册DispatcherServlet

所有请求都会经过这里

<servlet><servlet-name>springmvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><!-- DispatcherServlet要绑定spring配置文件--><init-param><param-name>contextConfigLocation</param-name><param-value>l</param-value></init-param><!-- 设置启动级别为一，服务器启动就启动--><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>/</url-pattern></servlet-mapping>

写spring配置文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns=""xmlns:xsi=""xsi:schemaLocation=" .xsd"version="4.0"><servlet><servlet-name>springmvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><!-- DispatcherServlet要绑定spring配置文件--><init-param><param-name>contextConfigLocation</param-name><param-value>l</param-value></init-param><!-- 设置启动级别为一，服务器启动就启动--><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>/</url-pattern></servlet-mapping>
</web-app>

controller加注解

@Controller
public class ControllerAnnotaion {//真实请求路径@RequestMapping("/h1")public String sayHello(Model model){model.addAttribute("msg","hello SpringMVCAnnotaion!");return "hello";//会被视图解析器处理}
}