二,Spring IOC以及整合

package com.bz.controller; import com.bz.entity.User; import com.bz.service.UserService; import com.bz.service.impl.UserServiceImpl; import com.github.pagehelper.PageInfo; import org.springframework.context.ApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; import javax.servlet.*; import javax.servlet.http.*; import javax.servlet.annotation.*; import java.io.IOException; import java.util.List; @WebServlet(name = "IndexServlet", value = "/IndexServlet") public class IndexServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { int num = Integer.parseInt(request.getParameter("pageNum")); int size = Integer.parseInt(request.getParameter("pageSize")); System.out.println(num + "," + size); ApplicationContext ac= WebApplicationContextUtils.getWebApplicationContext(request.getServletContext()); UserService userService= (UserService) ac.getBean("userService"); List<User> list = userService.selectAllUser(num, size); request.setAttribute("userList", list); PageInfo<User> pageInfo=new PageInfo<>(list); request.setAttribute("pageInfo",pageInfo); request.getRequestDispatcher("indexs.jsp").forward(request, response); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // int num = Integer.parseInt(request.getParameter("pageNum")); // int size = Integer.parseInt(request.getParameter("pageSize")); // System.out.println(num + "," + size); ApplicationContext ac= WebApplicationContextUtils.getWebApplicationContext(request.getServletContext()); UserService userService= (UserService) ac.getBean("userService"); List<User> list = userService.selectAllUser(1, 5); request.setAttribute("userList", list); PageInfo<User> pageInfo=new PageInfo<>(list); request.setAttribute("pageInfo",pageInfo); request.getRequestDispatcher("indexs.jsp").forward(request, response); } }