出现java.lang.IllegalStateException: Cannot create a session after the response has been committed异常

男娘i 2022-12-10 07:05 269阅读 0赞

在使用@SessionAttributes注解后销毁session域中的session时出现`java.lang.IllegalStateException: Cannot create a session after the response has been committed`错误，相关部分代码如下：

package xyz.newtouch.controller;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.*;
    import org.springframework.web.bind.support.SessionStatus;
    import org.springframework.web.servlet.ModelAndView;
    import xyz.newtouch.pojo.User;
    import xyz.newtouch.service.UserService;
     
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.IOException;
    import java.util.LinkedHashMap;
    import java.util.Map;
    
    /** * @author xxx */
    @SessionAttributes(names = { "user"})
    @RequestMapping("/user")
    @Controller
    public class UserController { 
        UserService userService;
    
        @Autowired
        public void setUserService(UserService userService) { 
            this.userService = userService;
        }
    
        @ResponseBody
        @GetMapping("/ajaxCheckUser/{username}")
        protected Map<String, Boolean>  ajaxCheckUser(@PathVariable("username") String username) { 
            boolean userStatus = userService.checkUserStatus(username);
            Map<String, Boolean> result = new LinkedHashMap<>();
            result.put("userStatus", userStatus);
            return result;
        }
    
        @PostMapping("/login")
        protected ModelAndView login(User loginUser, Model model) { 
            User user = userService.checkPassword(loginUser);
            ModelAndView modelAndView = new ModelAndView();
            if (user != null) { 
                modelAndView.addObject("msg", "login successful");
                model.addAttribute("user", user);
                modelAndView.setViewName("/pages/user/login_success.jsp");
            } else { 
                modelAndView.addObject("msg", "Invalid username or password");
                modelAndView.setViewName("/pages/user/login.jsp");
            }
            return modelAndView;
        }
    
        @GetMapping("/loginOut")
        protected String loginOut(HttpServletRequest request) throws IOException { 
            request.getSession().invalidate();
            return "redirect:/client/page";
        }
    }

当登录成功后再调用loginOut时就会出现`java.lang.IllegalStateException: Cannot create a session after the response has been committed`错误，提示在response提交之后不能操作session，原因是使用@SessionAttributes后不能再使用`request.getSession().invalidate();`方式销毁session数据，要解决此问题可以将`request.getSession().invalidate();`操作交给SessionStatus来做，使用示例：

@GetMapping("/loginOut")
    protected String loginOut(SessionStatus sessionStatus) throws IOException { 
        sessionStatus.setComplete();
        return "redirect:/client/page";
    }