@RequestMapping(value = "login")
public ModelAndView login(ModelAndView mav) throws Exception {
mav.setViewName("login.jsp");
return mav;
}
<url-pattern>/</url-pattern>不会匹配到*.jsp,不会进入spring的DispatcherServlet类。
<url-pattern>/*</url-pattern>会匹配*.jsp,导致进入spring的DispatcherServlet 类,然后去寻找controller,接着找不到对应的controller所以报错。配置文件中加入<mvc:default-servlet-handler />,login.jsp文件会被当做静态文件显示为文本。
<servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>