Java 实战项目锤炼之网上图书馆管理系统的实现流程

一、项目简述

功能： 区分为管理员用户和普通用户，普通用户：用户登录，个 人信息修改，图书查询，用户借阅，用户归还，管理员用 户：图书馆里，归还管理，借阅信息查询，图书维护，分 类管理，读者管理等等功能。

二、项目运行

环境配置： Jdk1.8 + Tomcat8.5 + mysql + Eclispe (IntelliJ IDEA,Eclispe,MyEclispe,Sts 都支持)

项目技术： JSP + Servlert + html+ css + JavaScript + JQuery + Ajax等等。

用户登陆模块代码:

用户登陆模块:

@Controller
public class LoginController {

private LoginService loginService;

@Autowired
   public void setLoginService(LoginService loginService) {
       this.loginService = loginService;
   }

@RequestMapping(value = {"/", "/login.html"})
   public String toLogin(HttpServletRequest request) {
       request.getSession().invalidate();
       return "index";
   }

@RequestMapping("/logout.html")
   public String logout(HttpServletRequest request) {
       request.getSession().invalidate();
       return "redirect:/login.html";
   }

//负责处理loginCheck.html请求
   //请求参数会根据参数名称默认契约自动绑定到相应方法的入参中
   @RequestMapping(value = "/api/loginCheck", method = RequestMethod.POST)
   public @ResponseBody
   Object loginCheck(HttpServletRequest request) {
       long id = Long.parseLong(request.getParameter("id"));
       String passwd = request.getParameter("passwd");
       boolean isReader = loginService.hasMatchReader(id, passwd);
       boolean isAdmin = loginService.hasMatchAdmin(id, passwd);
       HashMap<String, String> res = new HashMap<>();
       if (isAdmin) {
           Admin admin = new Admin();
           admin.setAdminId(id);
           admin.setPassword(passwd);
           String username = loginService.getAdminUsername(id);
           admin.setUsername(username);
           request.getSession().setAttribute("admin", admin);
           res.put("stateCode", "1");
           res.put("msg", "管理员登陆成功！");
       } else if (isReader) {
           ReaderCard readerCard = loginService.findReaderCardByReaderId(id);
           request.getSession().setAttribute("readercard", readerCard);
           res.put("stateCode", "2");
           res.put("msg", "读者登陆成功！");
       } else {
           res.put("stateCode", "0");
           res.put("msg", "账号或密码错误！");
       }
       return res;
   }

@RequestMapping("/admin_main.html")
   public ModelAndView toAdminMain(HttpServletResponse response) {
       return new ModelAndView("admin_main");
   }

@RequestMapping("/reader_main.html")
   public ModelAndView toReaderMain(HttpServletResponse response) {
       return new ModelAndView("reader_main");
   }

@RequestMapping("/admin_repasswd.html")
   public ModelAndView reAdminPasswd() {
       return new ModelAndView("admin_repasswd");
   }

@RequestMapping("/admin_repasswd_do")
   public String reAdminPasswdDo(HttpServletRequest request, String oldPasswd, String newPasswd, String reNewPasswd, RedirectAttributes redirectAttributes) {
       Admin admin = (Admin) request.getSession().getAttribute("admin");
       long id = admin.getAdminId();
       String password = loginService.getAdminPassword(id);
       if (password.equals(oldPasswd)) {
           if (loginService.adminRePassword(id, newPasswd)) {
               redirectAttributes.addFlashAttribute("succ", "密码修改成功！");
               return "redirect:/admin_repasswd.html";
           } else {
               redirectAttributes.addFlashAttribute("error", "密码修改失败！");
               return "redirect:/admin_repasswd.html";
           }
       } else {
           redirectAttributes.addFlashAttribute("error", "旧密码错误！");
           return "redirect:/admin_repasswd.html";
       }
   }

@RequestMapping("/reader_repasswd.html")
   public ModelAndView reReaderPasswd() {
       return new ModelAndView("reader_repasswd");
   }

@RequestMapping("/reader_repasswd_do")
   public String reReaderPasswdDo(HttpServletRequest request, String oldPasswd, String newPasswd, String reNewPasswd, RedirectAttributes redirectAttributes) {
       ReaderCard reader = (ReaderCard) request.getSession().getAttribute("readercard");
       long id = reader.getReaderId();
       String password = loginService.getReaderPassword(id);
       if (password.equals(oldPasswd)) {
           if (loginService.readerRePassword(id, newPasswd)) {
               redirectAttributes.addFlashAttribute("succ", "密码修改成功！");
               return "redirect:/reader_repasswd.html";
           } else {
               redirectAttributes.addFlashAttribute("error", "密码修改失败！");
               return "redirect:/reader_repasswd.html";
           }
       } else {
           redirectAttributes.addFlashAttribute("error", "旧密码错误！");
           return "redirect:/reader_repasswd.html";
       }
   }

//配置404页面
   @RequestMapping("*")
   public String notFind() {
       return "404";
   }

}

静态资源和 * 配置代码:

静态资源和 * 配置:

@Configuration
@EnableWebMvc
@ComponentScan("com.library.controller")
public class WebConfig extends WebMvcConfigurerAdapter {

@Bean
   public ViewResolver viewResolver() {
       InternalResourceViewResolver resolver = new InternalResourceViewResolver();
       resolver.setSuffix(".jsp");
       return resolver;
   }

@Override
   public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
       configurer.enable();
   }

@Override
   public void addResourceHandlers(ResourceHandlerRegistry registry) {
       registry.addResourceHandler("/img/**")
               .addResourceLocations("/static/img/");
       registry.addResourceHandler("/js/**").addResourceLocations("/static/js/");
       registry.addResourceHandler("/css/**").addResourceLocations("/static/css/");
   }
}

来源：https://blog.csdn.net/m0_59687645/article/details/121224582