springmvc:中的return语句

转载:https://blog.csdn.net/violet_echo_0908/article/details/50951141

1. return modelAndView例子

@RequestMapping(value="/login", method=RequestMethod.GET)
public ModelAndView loginPage(HttpSession session) {
    ModelAndView modelAndView = new ModelAndView("user/login");

    return modelAndView;    //访问 WEB-INF/jsp/user/login.jsp文件
}

2. return “redirect:/index.jsp”例子

@RequestMapping(value="/", method=RequestMethod.GET)
public String index(HttpSession session){
    session.setAttribute("message", null);
    return "redirect:/index.jsp";    访问根目录下index.jsp文件。redirect为直接url 访问。                   

}