javaweb课程资源管理系统.zip

package forAction; import java.io.IOException; import java.util.Enumeration; import java.util.List; import com.jspsmart.upload.*; import javax.activation.MimetypesFileTypeMap; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import javax.servlet.jsp.JspFactory; import javax.servlet.jsp.PageContext; import org.apache.commons.io.FileUtils; import forDao.CourseDao; import forDao.CoursewareDao; import forDao.Stu_courseDao; import forDao.Stu_homeworkDao; import forDao.StudentDao; import forDao.Tea_homeworkDao; import forDao.TeacherDao; import forXml.Course; import forXml.Stu_course; import forXml.Stu_homework; import forXml.Student; import forXml.Tea_homework; import forXml.pkeyStu_course; import forXml.pkeyTea_homework; public class teaManage extends HttpServlet { public teaManage() { super(); } public void destroy() { super.destroy(); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=GBK"); SmartUpload su = new SmartUpload(); Request req = su.getRequest();// 由于multipart/form-data的传输原因，使用smartupload产生的req PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, request, response, null, true, 8192, true); su.initialize(pageContext); try { su.upload(); String modify_self=req.getParameter("modify_self"); if(modify_self!=null) { TeacherDao tea=new TeacherDao(); String id=(String)request.getSession().getAttribute("id"); String old=req.getParameter("old"); String now=req.getParameter("now"); String script=new String(); if(tea.modifyPassword(id, old, now)==true) script = "<script>alert('修改密码成功，请重新登录');location.href='/CMS/index.jsp'</script>"; else script = "<script>alert('修改失败，请重新输入');location.href='/CMS/mainTeacher.jsp'</script>"; response.getWriter().println(script); return ; } else { CourseDao course=new CourseDao(); StudentDao student=new StudentDao(); Stu_homeworkDao stu_homework=new Stu_homeworkDao(); Tea_homeworkDao tea_homework=new Tea_homeworkDao(); Stu_courseDao stu_course=new Stu_courseDao(); String tea_id=(String)request.getSession().getAttribute("id"); List<Course> cl=course.getbyTea_id(tea_id); for(int i=0; i<cl.size(); i++) { Course tmp=cl.get(i); String cno=tmp.getCourse_no(); String upc=req.getParameter("upc"+i); String dnc=req.getParameter("dnc"+i); String rel=req.getParameter("rel"+i); if(upc!=null) { File file=su.getFiles().getFile(i); if(file.isMissing()) { String script = "<script>alert('未选择文件！');location.href='/CMS/mainTeacher.jsp'</script>"; response.getWriter().println(script); } else { String savePath = getServletContext().getRealPath("/")+"WEB-INF/courseware"; java.io.File f = new java.io.File(savePath); if (!f.exists() && !f.isDirectory()) f.mkdir(); String filename=file.getFileName(); String ext=file.getFileExt(); file.saveAs("/WEB-INF/courseware/"+cno+"."+ext); CoursewareDao cw=new CoursewareDao(); cw.modifyFile_title(cno, filename); String script = "<script>alert('上传成功！');location.href='/CMS/mainTeacher.jsp'</script>"; response.getWriter().println(script); } return ; } else if(dnc!=null) { CoursewareDao cw=new CoursewareDao(); String filename=cw.getbyCourse_no(cno).getFile_title(); String dir1=getServletContext().getRealPath("/")+"WEB-INF/courseware/"+cno+filename.substring(filename.lastIndexOf(".")); String dir2=getServletContext().getRealPath("/")+"WEB-INF/courseware/"+filename; java.io.File file1=new java.io.File(dir1); if(!file1.exists()) { String script = "<script>alert('文件已失效');location.href='/CMS/mainStudent.jsp'</script>"; response.getWriter().println(script); return ; } java.io.File file2=new java.io.File(dir2); FileUtils.copyFile(file1, file2); su.setContentDisposition(null);//设定contentDisposition为null以禁止浏览器自动打开文件，保证点击链接后是下载文件 su.downloadFile(dir2);// 下载文件，保证Web应用下的目录下有文件 file2.delete(); return ; } else if(rel!=null) { String hno=tea_homework.getNext(); tea_homework.addOne(cno, hno); List<Stu_course> scs=stu_course.getbyCourse_no(cno); for(int j=0; j<scs.size(); j++) { String stu_id=scs.get(j).getPkey().getStu_id(); stu_homework.addOne(cno, hno, stu_id); } String script = "<script>alert('发布作业成功！');location.href='/CMS/mainTeacher.jsp'</script>"; response.getWriter().println(script); return ; } List<Tea_homework> thk=tea_homework.getbyCourse_no(cno); for(int k=0; k<thk.size(); k++) { pkeyTea_homework pkey=thk.get(k).getPkey(); String hno=pkey.getHomework_no(); List<Stu_homework> shk=stu_homework.getbyHomework_no(hno); for(int j=0; j<shk.size (); j++) { Stu_homework hk=shk.get(j); String filename=(hk.getFilename()==null ? null : hk.getFilename().toString()); String stu_id=hk.getPkey().getStu_id(); int num=i*thk.size()*shk.size()+k*shk.size()+j; String str1="dnhwk"+num; String str2="upo"+num; if(req.getParameter(str1)!=null) { String dir=getServletContext().getRealPath("/")+"WEB-INF/homework/"+filename; su.setContentDisposition(null); su.downloadFile(dir); return ; } else if(req.getParameter(str2)!=null) { String op=req.getParameter("op"+num); stu_homework.modifyOpinion(cno, stu_id, hno, op); String script = "<script>alert('批改成功！');location.href='/CMS/mainTeacher.jsp'</script>"; response.getWriter().println(script); return ; } } } List<Stu_course> scl=stu_course.getbyCourse_no(cno); for(int j=0; j<scl.size (); j++) { Stu_course scs=scl.get(j); pkeyStu_course pkey=scs.getPkey(); int num=i*scl.size()+j; String str="sgd"+num; if(req.getParameter(str)!=null) { String grade=req.getParameter("gd"+num), script=new String(); stu_course.modifyGrade(pkey, Double.valueOf(grade)); script = "<script>alert('评分成功！');location.href='/CMS/mainTeacher.jsp'</script>"; response.ge