springmvc访问项目默认先访问后台再返回首页

1.spring过滤的url-pattern设置成了/,所以这里随便给个新的后缀

<welcome-file-list>
　　<welcome-file>index.zl</welcome-file>
</welcome-file-list>

2.新增一个过滤/index.zl

<servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/index.zl</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

3.controller

@Controller
@Scope("prototype")
@RequestMapping("/index.zl")
public class IndexController {

    @Autowired
    IndexService indexService;

    @RequestMapping()
    public ModelAndView index(HttpServletRequest request, HttpServletResponse response) throws Exception {
        
        ModelAndView mv=new ModelAndView();
        return mv;
    }

}