【无标题】基于javaweb+jsp的学籍管理系统(JavaWeb JSP MySQL Servlet SSM SpringBoot Bootstrap Ajax)

基于javaweb+jsp的学籍管理系统(JavaWeb JSP MySQL Servlet SSM SpringBoot Bootstrap Ajax)

JavaWeb JavaBean JSP MVC MySQL Tomcat JavaScript Bootstrap Ajax

基础JSP+Servlet或JSP+SSM(Spring、SpringMVC、MyBatis)框架或JSP+SSM+Maven(pom.xml)框架或SpringBoot…均可

开发工具：eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

    public void register(HttpServletResponse response, HttpServletRequest request) throws IOException, ServletException {
        String username = Util.decode(request, "username");
        String password = Util.decode(request, "password");
        System.out.println("username=" + username);
        System.out.println("password=" + password);

        Map params = new HashMap();
        params.put("searchColumn", "username");//使用`username`字段进行模糊查询
        params.put("keyword", username);
        params.put("startIndex", 0);
        params.put("pageSize", Long.MAX_VALUE);
        List list = (List) userService.list(params).get("list");
        for (User user : list) {
            if (user.getUsername().equals(username) ) {//说明该用户名已存在，必须换个用户名才能注册
                request.getSession().setAttribute("alert_msg", "错误：用户名已存在！");
                request.getRequestDispatcher("register.jsp").forward(request, response);
                return;
            }
        }
        User vo = new User();
        vo.setUsername(username);
        vo.setPassword(password);
        //vo.setUserType("普通用户");//需要设置一个默认值
        userService.insert(vo);
        request.getSession().setAttribute("alert_msg", "注册成功！用户名：[" + username + "]");
        request.getRequestDispatcher("https://blog.csdn.net/m0_67620512/article/details/login.jsp").forward(request, response);
    }

    

        

            

                

                    
                        ×
                    
                    
增加公告
                
                

                    

                        (hidden)
                        
                    
                    

                        标题: