JavaWeb 学生信息管理系统：新增学生功能实现

以下是一个简单的实现上述功能的 JavaWeb 代码示例：\n\njava\n// Student.java\npublic class Student {\n private String studentId;\n private String studentName;\n private String major;\n private String gender;\n private String phoneNumber;\n private String email;\n\n // 构造函数、getter和setter方法省略\n\n}\n\n// StudentDAO.java\npublic class StudentDAO {\n public void saveStudent(Student student) {\n // 将学生信息保存到数据库中的代码\n }\n\n public boolean isStudentIdExist(String studentId) {\n // 检查学号是否已存在的代码\n // 如果学号已存在，返回true；否则返回false\n }\n}\n\n// StudentListServlet.java\n@WebServlet("/studentList")\npublic class StudentListServlet extends HttpServlet {\n protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n // 查询学生信息列表的代码\n\n // 将学生信息列表存入request中，供JSP页面使用\n\n // 转发到学生信息列表页面\n request.getRequestDispatcher("/studentList.jsp").forward(request, response);\n }\n}\n\n// AddStudentServlet.java\n@WebServlet("/addStudent")\npublic class AddStudentServlet extends HttpServlet {\n protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n // 转发到新增学生页面\n request.getRequestDispatcher("/addStudent.jsp").forward(request, response);\n }\n\n protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n // 获取表单提交的学生信息\n String studentId = request.getParameter("studentId");\n String studentName = request.getParameter("studentName");\n String major = request.getParameter("major");\n String gender = request.getParameter("gender");\n String phoneNumber = request.getParameter("phoneNumber");\n String email = request.getParameter("email");\n\n // 检查学号是否已存在\n StudentDAO studentDAO = new StudentDAO();\n if (studentDAO.isStudentIdExist(studentId)) {\n // 学号已存在，返回提示框\n response.getWriter().println("<script>alert('学号已存在');</script>");\n return;\n }\n\n // 创建学生对象\n Student student = new Student();\n student.setStudentId(studentId);\n student.setStudentName(studentName);\n student.setMajor(major);\n student.setGender(gender);\n student.setPhoneNumber(phoneNumber);\n student.setEmail(email);\n\n // 保存学生信息到数据库\n studentDAO.saveStudent(student);\n\n // 重定向到学生信息列表页面\n response.sendRedirect(request.getContextPath() + "/studentList");\n }\n}\n\n\n上述代码示例中，使用了Servlet和JSP来实现功能。其中，Student类用于封装学生信息，StudentDAO类用于操作数据库，StudentListServlet用于查询和展示学生信息列表，AddStudentServlet用于处理新增学生信息的逻辑。