基于ssm的网上课堂系统

package com.ssm.controller; import java.io.File; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.BeanUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import com.ssm.entity.Course; import com.ssm.entity.Teacher; import com.ssm.entity.User; import com.ssm.service.CourseService; @Controller @RequestMapping("course") public class CourseController extends UserController{ @Autowired private CourseService courseService; @RequestMapping("hotcourses_stu") public String index_stu(Model model,HttpServletRequest request,HttpServletResponse response) throws Exception{ User u=(User) request.getSession().getAttribute("user"); if(u==null) { response.setContentType("text/html; charset=UTF-8"); //转码 PrintWriter out = response.getWriter(); out.flush(); out.println("<script>"); out.println("alert('登录身份已过期，请重新登录！');"); out.println("</script>"); return "main_stu/index_stu"; } int loginuserid=u.getId(); Course course =new Course(); List<Course> list1=courseService.hotCourses(course); model.addAttribute("hotcourses", list1); Teacher teacher=new Teacher(); List<Teacher> list2=courseService.hotTeachers(teacher); model.addAttribute("hotteachers", list2); Course usercourse=new Course(); usercourse.setId(loginuserid); System.out.print(loginuserid); List<Course> list3=courseService.yxCourses(usercourse); model.addAttribute("yxcourses", list3); return "main_stu/index_stu"; } @RequestMapping("hotcourses") public String index(Model model) throws Exception{ Course course =new Course(); List<Course> list1=courseService.hotCourses(course); model.addAttribute("hotcourses", list1); Teacher teacher=new Teacher(); List<Teacher> list2=courseService.hotTeachers(teacher); model.addAttribute("hotteachers", list2); return "studentpage/index"; } @RequestMapping("getall_stu") public String allcourse_stu(Model model,int i,Course course,HttpServletRequest request) throws Exception{ List<Course> list=courseService.getCourses(course); int pagenum=list.size()/8; request.getSession().setAttribute("pagenum", pagenum); int toindex=i*8; if(toindex>list.size()) { toindex=list.size(); } model.addAttribute("courses",list.subList((i-1)*8, toindex)); request.getSession().setAttribute("j", i); return "main_stu/course_stu"; } @RequestMapping("getall") public String allcourse(Model model,int i,Course course,HttpServletRequest request) throws Exception{ List<Course> list=courseService.getCourses(course); int pagenum=list.size()/8; request.getSession().setAttribute("pagenum", pagenum); int toindex=i*8; if(toindex>list.size()) { toindex=list.size(); } model.addAttribute("courses",list.subList((i-1)*8, toindex)); request.getSession().setAttribute("j", i); return "studentpage/course"; } @RequestMapping("manager_allcourse") public String mana_a_c(Model model,int i,Course course,HttpServletRequest request) throws Exception{ List<Course> list=courseService.getCourses(course); int pagenum=list.size()/5; request.getSession().setAttribute("pagenum", pagenum); int toindex=i*5; if(toindex>list.size()) { toindex=list.size(); } model.addAttribute("manager_courses",list.subList((i-1)*5, toindex)); request.getSession().setAttribute("j", i); return "managerpage/courseshow"; } @RequestMapping("selectcourse_stu") public String selectcourse_stu(Model model,Course course,HttpServletRequest request) throws Exception{ List<Course> list=courseService.selectCourses(course); int pagenum=list.size()/8; int i=1; request.getSession().setAttribute("pagenum", pagenum); int toindex=i*8; if(toindex>list.size()) { toindex=list.size(); } model.addAttribute("courses",list.subList((i-1)*8, toindex)); request.getSession().setAttribute("j", i); return "main_stu/course_stu"; } @RequestMapping("kindcourse_stu") public String kindcourse_stu(Model model,String data,HttpServletRequest request) throws Exception{ Course course=new Course(); course.setName(data); List<Course> list=courseService.selectCourses(course); int pagenum=list.size()/8; int i=1; request.getSession().setAttribute("pagenum", pagenum); int toindex=i*8; if(toindex>list.size()) { toindex=list.size(); } model.addAttribute("courses",list.subList((i-1)*8, toindex)); request.getSession().setAttribute("j", i); return "main_stu/course_stu"; } @RequestMapping("selectcourse") public String selectcourse(Model model,Course course,String data,HttpServletRequest request) throws Exception{ if(data!=null) { course.setName(data); } List<Course> list=courseService.selectCourses(course); int pagenum=list.size()/8; int i=1; request.getSession().setAttribute("pagenum", pagenum); int toindex=i*8; if(toindex>list.size()) { toindex=list.size(); } model.addAttribute("courses",list.subList((i-1)*8, toindex)); request.getSession().setAttribute("j", i); return "studentpage/course"; } @RequestMapping("coursexq_stu") public String coursexq_stu(Model model,Course course,int id,HttpServletRequest request) throws Exception{ course.setId(id); List<Course> list=courseService.coursexqCourses(course); model.addAttribute("courses",list); return "main_stu/coursexq_stu"; } @RequestMapping("coursexq") public String coursexq(Model model,Course course,int id,HttpServletRequest request) throws Exception{ course.setId(id); List<Course> list=courseService.coursexqCourses(course); model.addAttribute("courses",list); return "studentpage/coursexq"; } @RequestMapping("choose_stu") public String choose_stu(HttpServletResponse response,Model model,int courseid,int id,Course course,HttpServletRequest request) throws Exception{ try { course.setDepid(id); course.setId(courseid); courseService.muchCourses(course); List<Course> list=courseService.coursexqCourses(course); for(Course choose_stu:list) { course.setName(choose_stu.getName()); course.setImg(choose_stu.getImg()); course.setNumber(choose_stu.getNumber()); course.setPrice(choose_stu.getPrice()); course.setTip(choose_stu.getTip()); course.setTeacher(choose_stu.getTeacher()); course.setType(choose_stu.getType()); course.setVideo(choose_stu.getVideo()); } courseService.insertCourses(course); model.addAttribute("courses", list); response.setContentType("text/html; charset=UTF-8"); //转码 PrintWriter out = response.getWriter(); out.flush(); out.println("<script>"); out.println("alert('选课成功！可在已首页查看！记得按时学习哟！');"); out.println("history.back();"); out.println("</script>"); return "main_stu/coursexq_stu"; }catch(Exception e){ e.printStackTrace(); return "redirect:/student/index"; } } @RequestMapping("add") public String add(Course course) throws Exception{ courseService.insertCourses(course); //return "redirect:"+"/a/all_course"; return "success"; } @RequestMapping("addcourse") public String addcourse(MultipartFile imgFile,MultipartFile courseFile,String teacher,Cou