@RequestMapping("/login") public String login(@RequestBody User user, @RequestParam String checkCode, HttpServletRequest request) throws IOException { HttpSession session = request.getSession(); String checkCodeGen = (String) session.getAttribute("checkCodeGen"); if (checkCodeGen.equalsIgnoreCase(checkCode)){ User result = userService.login(user.getUserName(), user.getPassword()); if (result != null){ session.setAttribute("userName",result.getUserName()); return "success" ; } }else{ return "验证码错误"; } return "用户名或密码错误"; } @RequestMapping("/checkCode") public void checkCode(HttpServletRequest request, HttpServletResponse response) throws IOException { String checkCodeGen = CheckCodeUtil.generateVerifyCode(4); HttpSession session = request.getSession(); session.setAttribute("checkCodeGen",checkCodeGen); System.out.println(session.getId()); ServletOutputStream os = response.getOutputStream(); CheckCodeUtil.outputImage(100,40,os,checkCodeGen); } @RequestMapping("/checkLogin") public String checkLogin(HttpSession session){ return (String)session.getAttribute("userName"); } @RequestMapping("/logout") public String logout(HttpSession session){ session.setAttribute("userName",null); return "success"; }

@Controller public class UserController { @Resource private UserMapper userMapper; @RequestMapping("/login") public String login(String username, String password, HttpSession session) { User user = userMapper.getUserByUsername(username); if (user != null && user.getPassword().equals(password)) { session.setAttribute("user", user); return "redirect:/index.jsp"; } else { return "redirect:/login.jsp"; } } @RequestMapping("/register") public String register(User user) { userMapper.addUser(user); return "redirect:/login.jsp"; } @RequestMapping("/logout") public String logout(HttpSession session) { session.removeAttribute("user"); return "redirect:/login.jsp"; } }

在类中，您定义了三个@RequestMapping注解来处理/login，/register和/logout路径的请求。但是，您可能遇到了一个无法解析符号“Controller”的错误。这可能是因为您没有正确导入Spring MVC的依赖关系。请确保您在...

详细注释下列代码：@Controller public class LoginController { @Autowired private UserService userService; @RequestMapping("/login/login") public String login(){ return "login"; } @RequestMapping("/login") public String login1(){ return "login"; } @ResponseBody @RequestMapping("/login/index") public Msg loginIndex(User user,HttpSession httpSession){ User user1=userService.findUserByUsername(user.getUsername()); if(user1.getPassword().equals(user.getPassword())) { httpSession.setAttribute("user", user1); return Msg.success(); }else{ return Msg.fail().add("va_msg", "密码错误"); } } //ajax校验username是否存在 @ResponseBody @RequestMapping("/login/checkUsernameExit") public Msg checkUsernameExit(@RequestParam("username")String username){ System.out.println("username:"+username); User user=userService.findUserByUsername(username); if(user==null) { return Msg.fail().add("va_msg", "用户名不存在"); } return Msg.success(); } }

其中，login方法的@RequestMapping注解为"/login/login"，指定了登录页面的路径。login1方法的@RequestMapping注解为"/login"，指定了登录操作的路径。loginIndex方法的@ResponseBody和@RequestMapping注解指定了...

@RequiredArgsConstructor @Controller public class LoginController { private final LoginService loginService; @RequestMapping(value = "/login",method = RequestMethod.POST) //插入数据 public String login(String username, String password, String vercode, String role, HttpSession session, Model model) { return loginService.login(username,password,vercode,role,session,model); } @RequestMapping("/loginOut") public String loginOut(HttpSession session) { session.invalidate(); return "redirect:/"; } }请详细解释每一行代码

public String login(String username, String password, String vercode, String role, HttpSession session, Model model) { return loginService.login(username,password,vercode,role,session,model); } ...

解释import javax.servlet.http.HttpServletRequest; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class UserController { @RequestMapping("/profile") public String login(HttpServletRequest request) { String username = request.getParameter("username"); // 存储到Session中 request.getSession().setAttribute("username", username); return "Logged in successfully!"; } @RequestMapping("/profile") public String profile(HttpServletRequest request) { // 从Session中获取属性 String username = (String) request.getSession().getAttribute("username"); return "Welcome, " + username + "!"; } @RequestMapping("/logout") public String logout(HttpServletRequest request) { // 从Session中移除属性 request.getSession().removeAttribute("username"); return "Logged out successfully!"; } }

在每个请求的方法中，都使用HttpServletRequest对象来获取请求参数和会话属性，并返回相应的响应字符串。在@RequestMapping注释下，定义了每个方法所映射到的HTTP请求路径。@RestController注释表示这个类是一个REST...

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; /** * (Admin)表控制层 * * @author makejava * @since 2021-02-04 12:51:19 */ @Controller @RequestMapping("admin") public class AdminController { /** * 服务对象 */ //自动注入业务层的AdminService类 @Autowired @Qualifier("adminService") private AdminService adminService; //修改管理员信息 @RequestMapping("update") public String update(Admin admin) { adminService.update(admin); return "/admin/menus"; } @RequestMapping(value = "/login",method = RequestMethod.GET) public String toLogin(){ return "/admin/index"; } //login业务的访问位置为/admin/login @RequestMapping(value = "/login",method = RequestMethod.POST) public String login(Admin admin, HttpServletRequest request,HttpSession session){ //调用login方法来验证是否是注册用户 boolean loginType = adminService.login(admin.getName(),admin.getPwd()); if(loginType){ //如果验证通过,则将用户信息传到前台 request.setAttribute("admin",admin); session.setAttribute("admin_session",admin); //并跳转到success.jsp页面 return "/admin/main"; }else{ //若不对,则返回 request.setAttribute("message","用户名密码错误"); return "/admin/index"; } } //登出,地址/admin/logout @RequestMapping("logout") public String logout(HttpSession session){ //清除session session.removeAttribute("admin_session"); //重定向到登录页面的跳转方法 return "/admin/index"; }

7. @RequestMapping(value = "/login",method = RequestMethod.GET)：该注解指定了处理登录页面跳转的GET请求的URL路径。 8. @RequestMapping(value = "/login",method = RequestMethod.POST)：该注解指定了...

@RequestMapping("/userRegister") public String userRegister(User user, HttpServletRequest request, HttpSession session) { userMapper.add(user); return "user-login"; } }

当用户提交注册信息时，该方法会将用户信息保存到数据库中，并返回一个视图名称，即"user-...参数User user表示接收用户提交的注册信息，HttpServletRequest request和HttpSession session分别表示当前请求和会话对象。

@RequestMapping("/admin") @Controller public class AdminController { @Autowired private AdminService adminService; ///8.登录 @RequestMapping("/login") @ResponseBody public String Login(HttpServletRequest request, HttpServletResponse response) throws IOException { String username=request.getParameter("username"); String password=request.getParameter("password"); Admin admin =adminService.login(username,password); if(admin == null){ return new Result(false,null,"登录失败，用户名或密码错误！").toString(); }else{ return new Result(true,admin,"登录成功！").toString(); } } ///首页数据 @RequestMapping("/index") @ResponseBody public String index(){ Map<String,Integer> admin =adminService.index(); if(admin == null){ return new Result(false,null,"登录失败，用户名或密码错误！").toString(); }else{ return new Result(true,admin,"登录成功！").toString(); } } }

index方法用于获取首页数据，调用注入的AdminService中的index方法，返回一个Map<String,Integer>类型的数据表示首页数据。如果获取数据失败，则返回一个Result对象表示获取数据失败，否则返回一个Result对象表示...

// 注册 @ResponseBody @RequestMapping("/register") public Map<String, Object> register(@RequestBody User user){ ResponseBean responseBean = new ResponseBean(); User u = userService.selectOne(user); if (u == null) { userService.insertSelective(user); } else { responseBean.putError("注册失败，该用户名已注册"); } return responseBean.getResponseMap(); } // 登录 @ResponseBody @RequestMapping("/login") public Map<String, Object> login(@RequestBody User user, HttpSession session){ ResponseBean responseBean = new ResponseBean(); User u = userService.selectOne(user); if (u == null) { responseBean.putError("用户名/密码错误"); } else { if (!u.getPassword().equals(user.getPassword())) { responseBean.putError("用户名/密码错误"); } else { responseBean.putData("data", u); session.setAttribute(WebConstant.SESSION_KEY_USER, u); } } return responseBean.getResponseMap(); }

在 register 方法中，@RequestBody 注解表示该方法接收的参数为一个 User 对象，该方法会将该对象插入到数据库中。如果该用户名已被注册，则返回一个包含错误信息的 ResponseBean 对象。在 login 方法中，也是通过...

@RequestMapping("/debook/add.html") public String addDebookHtml(Model model, HttpSession session) { List<Category> categoryList = categoryService.selectAll(); model.addAttribute("categoryList", categoryList); return "/admin/debook_add"; } @ResponseBody @RequestMapping("/debook/add") public Map<String, Object> addDebook(@RequestBody Debook debook, HttpSession session) { User user = (User) session.getAttribute(WebConstant.SESSION_KEY_USER); debook.setUserId(user.getId()); debook.setUsername(user.getUsername()); debook.setDebookTime(new Date()); debookService.insertSelective(debook); return new ResponseBean().getResponseMap(); }

这是一个使用Spring MVC框架的Java Web项目中的两个请求...另外，该方法使用了 @RequestBody 注解，表示将请求体中的 JSON 数据映射为 Debook 对象。此外，该方法还使用了 HttpSession 对象，用于获取当前用户信息。

@RestController public class LoginController { @Resource(name = "userServiceImpl") private IUserService userService; @RequestMapping(value = "/login/login", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"}) public Result<User> login(HttpRequest request, HttpServletResponse response) { return userService.login(request, response); } @RequestMapping(value = "/login/check", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"}) public Result<User> check(HttpServletRequest request, HttpServletResponse response) { Result<User> result = new Result<>(); String userId = SessionContext.get("user_id"); if (StringUtils.isEmpty(userId)) { Cookie loginTypeCookie = new Cookie("login_type", "0"); loginTypeCookie.setPath("/"); loginTypeCookie.setSecure(true); response.addCookie(loginTypeCookie); result.set("login_type", 0); } else { Cookie loginTypeCookie = new Cookie("login_type", "1"); loginTypeCookie.setPath("/"); loginTypeCookie.setSecure(true); response.addCookie(loginTypeCookie); result.set("login_type", 1); result.set("user_id", SessionContext.get("user_id")); result.set("user_name", SessionContext.get("user_name")); result.set("login_name", SessionContext.get("login_name")); result.set("user_image_id", SessionContext.get("user_image_id")); result.set("role_type", SessionContext.get("role_type")); // 检查token 是否需要更新 HttpSession session = request.getSession(false); if(session != null){ // 更新 session String issueAtStr = SessionContext.get("issueAt"); if(StringUtils.isNotEmpty(issueAtStr)){ Date issueAt = DateUtils.stringToDate(issueAtStr, DateConst.DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS_SSS); if(issueAt != null && TokenUtils.shouldTokenRefresh(issueAt)){ Map<String, Object> claims = new HashMap<>(10); claims.put("user_id", String.valueOf(SessionContext.getInt("user_id"))); claims.put("user_name", SessionContext.get("user_name")); claims.put("login_name", SessionContext.get("login_name")); claims.put("user_image_id", SessionContext.get("user_image_id")); claims.put("role_type", String.valueOf(SessionContext.getInt("role_type"))); String token = TokenUtils.createToken(claims); session.setAttribute("token", token); result.set("token", token); Cookie tokenCookie = new Cookie("token", token); tokenCookie.setPath("/"); response.addCookie(tokenCookie); } } } } return result; } @RequestMapping(value = "/login/exit", method = RequestMethod.POST, produces = {"application/json;charset=UTF-8"}) public Result<User> exit(HttpRequest request) { HttpSession session = request.getSession(false); if (session != null) { session.invalidate(); } return new Result<>(); } }

// 过期时间为发放时间+30分钟 if(System.currentTimeMillis() >= expireTime){ // 需要更新 token String token = JWTUtils.createToken(SessionContext.get("user_id")); session.setAttribute("token", token); ...

package org.example.finance.controller; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import org.example.finance.model.Result; import org.example.finance.model.bo.LoginBO; import org.example.finance.model.bo.RegisterBO; import org.example.finance.service.IOrgService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; /** * * 前端控制器 * * * @author Arthur * @since 2021-09-07 */ @Api(value = "组织（公司、银行）相关接口", tags = "组织（公司、银行）相关接口") @RestController @RequestMapping("/finance/org") public class OrgController { @Autowired IOrgService orgService; @ApiOperation(value = "登录接口", notes = "登录接口") @RequestMapping(value = "login", method = RequestMethod.POST) public Result<String> login(@RequestBody LoginBO loginBO) { return orgService.login(loginBO); } @ApiOperation(value = "注册接口", notes = "注册接口") @RequestMapping(value = "register", method = RequestMethod.POST) public Result<String> register(@RequestBody RegisterBO registerBO) { return orgService.register(registerBO); } // @ApiOperation(value = "重新绑定地址接口", notes = "重新绑定地址接口") // @RequestMapping(value = "rebind", method = RequestMethod.GET) // public Result<String> rebind(@RequestParam String username, @RequestParam String address) { // return orgService.rebind(username, address); // } }

这是一个财务管理系统的控制器类，使用了Spring的@RestController和@RequestMapping注解来定义接口路径。该控制器提供了组织（公司、银行）相关的接口，包括登录和注册接口。其中，登录接口使用了@ApiOperation注解...

package com.ldu.controller; import com.ldu.pojo.Admin; import com.ldu.pojo.Goods; import com.ldu.pojo.Orders; import com.ldu.pojo.Purse; import com.ldu.pojo.User; import com.ldu.service.AdminService; import com.ldu.service.GoodsService; import com.ldu.service.OrdersService; import com.ldu.service.PurseService; import com.ldu.service.UserService; import com.ldu.util.GoodsGrid; import com.ldu.util.OrdersGrid; import com.ldu.util.PurseGrid; import com.ldu.util.UserGrid; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import org.springframework.web.servlet.ModelAndView; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; /** * 2018-3-7 10:40:38 */ @Controller @RequestMapping(value = "/admin") public class AdminController { @Resource private UserService userService; @Resource private GoodsService goodsService; @Resource private OrdersService ordersService; @Resource private PurseService purseService; @Resource private AdminService adminService; @RequestMapping(value = "", method = RequestMethod.GET) public String login(HttpSession session) { // 清除session //session.invalidate(); return "/admin/login"; } @RequestMapping(value = "/index", method = RequestMethod.POST) public String index(HttpServletRequest request, Admin admins) { Admin myadmin = adminService.findAdmin(admins.getPhone(), admins.getPassword()); if (myadmin != null) { request.getSession().setAttribute("admin", myadmin); return "/admin/index"; } return "/admin/login"; } @RequestMapping(value = "/indexs") public String indexs(HttpServletRequest request) { Admin admin = (Admin) request.getSession().getAttribute("admin"); if (admin != null) { Integer id = admin.getId(); Admin myadmin = adminService.findAdminById(id); request.getSession().setAttribute("admin", myadmin); return "/admin/index"; } return "/admin/login"; }

这是一个 Java 类，定义了一个名为 AdminController 的 Spring MVC 控制器。...该 Java 类还使用了 HttpServletRequest 和 HttpSession 来获取和操作请求和会话信息，并使用了 ModelAndView 来封装返回结果。

使用ResponseEntity<>改写以下代码：@Controller @RequestMapping("/user") public class UserController { @RequestMapping(value = "/login", method = RequestMethod.POST) public ModelAndView login(User user,HttpSession httpSession) { ModelAndView modelAndView = new ModelAndView(); if (user.getUserName().equals("张三") && user.getPassword().equals("123")) { //modelAndView.addObject("user", user); httpSession.setAttribute("user",user); modelAndView.setViewName("success"); } else { modelAndView.setViewName("fail"); } return modelAndView; } }

public ResponseEntity<String> login(User user, HttpSession httpSession) { if (user.getUserName().equals("张三") && user.getPassword().equals("123")) { httpSession.setAttribute("user", user); ...

@RequestMapping(value = "/login.do") public String login(String username, String password, String loginType, String checkcode) throws Exception { log.info(username + " " + password + " " + loginType); String errorMessage = "登录失败,请稍候重试"; try { String code = (String) session.getAttribute(com.google.code.kaptcha.Constants.KAPTCHA_SESSION_KEY); if (code == null) { request.getSession(false).invalidate(); return "redirect:/index.jsp"; } else { } checkcode = StringUtil.stringVerification(checkcode);

这段代码是一个Java Web应用程序的登录功能的处理方法，使用了Spring框架的@RequestMapping注解将该方法映射到"/login.do"的URL路径上。该方法接受四个参数：用户名、密码、登录类型和验证码。登录类型和验证码的...

这是ajax的后端代码,配合上面那段看看有什么错误 @RequestMapping(value = "/loginIn",method = RequestMethod.POST) @ResponseBody public Result loginIn( String username, String password, String captcha){ User user = userService.getUserByNameAndPwd(username, password); System.out.println(username); if(user!=null){ HttpSession session=request.getSession(); String o = (String) session.getAttribute("captcha"); if (captcha.equalsIgnoreCase(o)){ return new Result(1,"登陆成功",user,null); }else{ return new Result(-1,"验证码错误",null,null); } } return new Result(0,"用户名或密码错误",null,null); }

public Result loginIn(HttpServletRequest request, String username, String password, String captcha) { User user = userService.getUserByNameAndPwd(username, password); System.out.println(username); ...

@ApiOperation(value = "分页", notes = "") @RequestMapping(value = "/page", method = RequestMethod.GET) public String page(@RequestParam(value = "page", defaultValue = "1") int pageNumber, @RequestParam(value = "page.size", defaultValue = Constant.PAGE_SIZE) int pageSize, @RequestParam(value = "sortType", defaultValue = "auto") String sortType, HttpServletRequest request, Model model) { HttpSession session = request.getSession(); User user = (User) session.getAttribute("user"); if (user == null) { return "login"; } //为我们封装了动态查询语句 search_这个开头 search_EQ_xxxx(字段名称) 就是查询相等 //search_Like_xxxx 模糊 //EQ, LIKE, GT, LT, GTE, LTE, NOTEQ, ISNULL, ISNOTNULL, ORLIKE, IN, NOTIN Map<String, Object> searchParams = Servlets.getParametersStartingWith(request, "search_"); Page<Appointment> page = appointmentService.getPage(searchParams,pageNumber, pageSize, sortType); model.addAttribute("list", page); return "appointment/list"; }

- request：HttpServletRequest对象，用于获取请求参数 - model：Spring MVC框架中的Model对象，用于向页面传递数据接口的实现逻辑如下： 1. 首先，从请求中获取当前用户信息，如果用户为空，则返回"login"字符串...

@RequestMapping(value = "export", method = RequestMethod.GET) public void exportToExcel(HttpServletRequest request, HttpServletResponse response, HttpSession session) throws IOException { System.out.println("111"); List<Attendance> att

该方法的参数包括 HttpServletRequest、HttpServletResponse 和 HttpSession。在方法体中，首先输出 "111"，然后创建了一个名为 att 的 List<Attendance> 对象。这段代码还没有完整，如果您有完整的代码，请提供更多...

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@RequestMapping("/userRegister") public String userRegister(User user, HttpServletRequest request, HttpSession session) { userMapper.add(user); return "user-login"; } }

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