编写第一个 Spring MVC 程序

package com.sys.controller; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.Controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; //注意：这里我们先导入Controller接口 public class HelloController implements Controller { public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { //ModelAndView 模型和视图 ModelAndView mv = new ModelAndView(); //封装对象，放在ModelAndView中。Model mv.addObject("msg","Hello SpringMVC!"); //封装要跳转的视图，放在ModelAndView中，通过hello找到hello.jsp mv.setViewName("hello"); //: /WEB-INF/jsp/hello.jsp return mv; } }