JSP存储图书信息 包括数据库文件，使用的是mysql数据库

package controller; import java.io.IOException; import java.util.List; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import dao.BookDao; import domain.Book; public class BookController extends HttpServlet { private static final long serialVersionUID = 4122751685481844915L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8"); int arg=Integer.parseInt(request.getParameter("arg")); switch(arg) { //根据页面传递的参数来控制执行的操作 case 1: this.findAllBookes(request,response); break; case 2: this.saveBookes(request,response); break; } } public void findAllBookes(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8"); BookDao bookDao=new BookDao(); List list=bookDao.findAllBooks(); request.setAttribute("booklist", list); RequestDispatcher rdt=request.getRequestDispatcher("showAllBooks.jsp"); rdt.forward(request,response); } public void saveBookes(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String name=(String)request.getParameter("name"); double price=0.0; if(!request.getParameter("price").equals("") && request.getParameter("price")!=null) { price=Double.parseDouble(request.getParameter("price")); } String author=(String)request.getParameter("author"); String bookConcern=(String)request.getParameter("concern"); int counts=0; if(!request.getParameter("counts").equals("") && request.getParameter("counts")!=null) { counts=Integer.parseInt(request.getParameter("counts")); } Book book=new Book(); book.setName(name); book.setAuthor(author); book.setBookConcern(bookConcern); book.setPrice(price); book.setCounts(counts); BookDao bookDao=new BookDao(); try { bookDao.saveUser(book); } catch (Exception e) { e.printStackTrace(); } this.findAllBookes(request, response); } }