发表于： 2020-08-14 23:22:36
1 1209
修改拦截器
public class LoginInterceptors extends HandlerInterceptorAdapter {
@Autowired
UserService userService;
private static final Logger log= LogManager.getLogger(UserController.class);
/**
* 在业务处理器处理请求之前被调用，返回true or false,true继续执行，false请求结束
*/
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception{
//请求cookie里的信息，放入cookies
log.info("interceptor start");
Cookie[] cookies = request.getCookies();
//判断cookies不为空，且至少有一个cookie。
if(cookies!=null&&cookies.length>0){
//遍历数据库查找token
for (Cookie cookie:cookies) {
log.info("cookie start");
//判读数据库是否储存了token
if("token".equals(cookie.getName())){
log.info("token".equals(cookie.getName()));
DesUtil desUtil = new DesUtil();
String token = desUtil.decrypt(cookie.getValue());
long id = Long.valueOf(token);
if(userService.selectById(id)!=null){
log.info("success");
return true;
}else{
//重新定位到登录界面
response.sendRedirect("/a/login/0");
log.info("no data in database");
return false;
}
}
}
response.sendRedirect("/a/login/0");
return false;
}
else{
response.sendRedirect("/a/register");
log.info("no token please register");
return false;
}
}
/**
* 在业务处理器处理请求完成之后，生成视图之前执行
*/
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception{
if(modelAndView != null){
Map<String, String> map = new HashMap<String, String>();
modelAndView.addAllObjects(map);
}
}
/**
* 在DispatcherServlet完全处理完请求之后被调用，可用于清理资源
*/
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception{
}
}
修改controller
@Controller
public class UserController {
@Autowired
UserService userService;
private static final Logger log = LogManager.getLogger(UserController.class);
/**
* 注册模块
*
* @return
*/
@RequestMapping(value = "/a/register/0", method = RequestMethod.GET)
public String registered() {
return "register";
}
/**
* 登录模块
*
* @return
*/
@RequestMapping(value = "/a/login/0")
public String login() {
return "login";
}
/**
* 注册检测模块
*
* @param user
* @param name
* @return
*/
@RequestMapping(value = "/a/register/1")
public String insert(User user, String name) {
log.info("新注册用户信息================" + user);
// 通过用户名查找数据,看是否有这条数据
List<User> users = userService.selectByName(name);
log.info("查看数据库里是否有配置的数据================" + users);
// 能查出来这条数据就说明数据库里有这条数据,那么注册失败,否则注册成功,跳转到登录页面
if (!CollectionUtils.isEmpty(users)) {
log.info("用户已存在=============");
return "redirect:/a/login/0";
} else {
if (
user.getName() != null
&& user.getName().length() > 0
&& user.getPassword() != null
&& user.getPassword().length() > 0) {
log.info("注册用户的信息=============" + user);
int row = userService.insert(user);
log.info("插入成功===============" + row);
return "login";
} else {
return "redirect:/a/register/0";
}
}
}
/**
* 登录检测模块
*
* @param user
* @param name
* @param password
* @param response
* @return
*/
@RequestMapping(value = "/a/login/1", method = RequestMethod.GET)
public String checkLogin(User user, String name, String password, HttpServletResponse response) {
log.info("user============" + user);
// 如果能查出来数据,说明数据库里有这条数据,那么登录成功,跳转首页,否则登录失败,跳回登录页面
List<User> list = userService.selectByCondition(name, password);
log.info("list=======================" + list.size());
log.info(CollectionUtils.isEmpty(list));
if (!CollectionUtils.isEmpty(list)) {
Long id = user.getId();
String token = id + "/" + System.currentTimeMillis();
try {
DesUtil desUtil = new DesUtil();
token = desUtil.encrypt(token);
//创建cookie对象
Cookie cookie = new Cookie("token", token);
//设置cookie登录周期,单位秒，这里就是30分钟,
// 这里注释掉是默认周期为-1，就是每次退出页面自动清除cookie,方便测试
// cookie.setMaxAge(30 * 60);
//指定cookie的路径，客户端将cookie返回到该目录下
cookie.setPath("/");
//保存cookie到客户端
response.addCookie(cookie);
} catch (Exception e) {
e.printStackTrace();
}
return "redirect:/a/u/profession";
} else {
return "redirect:/a/login/0";
}
}
/**
* 注销当前账号模块
*
* @param request
* @param response
* @return
*/
@RequestMapping(value = "/logout", method = RequestMethod.GET)
public String loginOut(HttpServletRequest request, HttpServletResponse response) {
Cookie[] cookies = request.getCookies();
//这里就是把cookie中的所有数据都来出来比对
for (Cookie cookie : cookies) {
//当我们找到了要注销的账号的信息，就把这个账号的信息进行修改
if ("token".equals(cookie.getName())) {
//token的值设为null
cookie = new Cookie("token", null);
//将cookie时间设置为0
cookie.setMaxAge(0);
cookie.setPath("/");
//然后把这个cookie加到所有的cookie中存储
response.addCookie(cookie);
//重定向到登录页面
return "redirect:/login/0";
}
}
//重定向到登录页面
return "redirect:/login/0";
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