spring mvc 异常处理和session添加

时间：2024-01-18 11:53:44

在controller中进行设置

package com.stone.controller;

import java.util.HashMap;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import javax.validation.Valid;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

import org.springframework.validation.BindingResult;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.ResponseBody;

import org.springframework.web.bind.annotation.SessionAttributes;

import org.springframework.web.servlet.view.InternalResourceViewResolver;

import com.stone.model.User;

@Controller

@RequestMapping("/user")

@SessionAttributes("loginUser")//需要处理的session

public class UserController {

    private final static Map<String, User> users = new HashMap<String, User>();

    public UserController() {

        users.put("ldh", new User("ldh", "刘德华", "123", "123@123.com"));

        users.put("zxy", new User("zxy", "张学友", "123", "123@123.com"));

        users.put("gfc", new User("gfc", "郭富城", "123", "123@123.com"));

        users.put("lm", new User("lm", "黎明", "123", "123@123.com"));

    }

    @RequestMapping("/users")

    public String list(Model model) {

        model.addAttribute("users", users);

        return "user/list";

    }

    @RequestMapping(value = "/login", method = RequestMethod.GET)

    public String login() {

        return "user/login";

    }

    @RequestMapping(value = "/login", method = RequestMethod.POST)

    public String login(String username, String password, Model model) {

        if (!users.containsKey(username)) {

            throw new RuntimeException("用户名不存在！");

        }

        if (!password.equals(users.get(username).getPassword())) {

            throw new RuntimeException("用户密码不正确");

        }

        // 进行session的设置

        model.addAttribute("loginUser", users.get(username));

        return "redirect:/user/users/";

    }

        //进行异常处理

    @ExceptionHandler(value = { RuntimeException.class })

    public String handlerException(Exception ex, HttpServletRequest req) {

        req.setAttribute("ex", ex);

        return "error";

    }

}

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