基于javaweb+mysql的jsp+servlet在线学生选课管理系统(java+jsp+bootstrap+jquery+servlet+mysql)
运行环境
Java≥8、MySQL≥5.7、Tomcat≥8
开发工具
eclipse/idea/myeclipse/sts等均可配置运行
适用
课程设计，大作业，毕业设计，项目练习，学习演示等
功能说明
基于javaweb+mysql的JSP+Servlet在线学生选课管理系统(java+jsp+bootstrap+jquery+servlet+mysql)
项目介绍
管理员角色包含以下功能： 管理员登录,学生管理,教师管理,班级管理,添加班级,添加教师,添加学生,课程管理,添加课程,系统用户管理,添加用户,修改密码等功能。
教师角色包含以下功能： 教师登录,选课管理,添加选课学生,成绩管理,添加成绩,查看学生信息,查看班级信息,查看个人档案,修改密码等功能。
学生角色包含以下功能： 学生登录,选课管理,成绩查看,查看个人档案,修改密码等功能。
环境需要
1.运行环境：最好是java jdk 1.8，我们在这个平台上运行的。其他版本理论上也可以。 2.IDE环境：IDEA，Eclipse,Myeclipse都可以。推荐IDEA; 3.tomcat环境：Tomcat 7.x,8.x,9.x版本均可 4.硬件环境：windows 7/8/10 1G内存以上；或者 Mac OS； 5.数据库：MySql 5.7版本； 6.是否Maven项目: 是；查看源码目录中是否包含pom.xml；若包含，则为maven项目，否则为非maven项目
技术栈
后端：servlet 2. 前端：JSP+bootstrap+jQuery
使用说明
使用Navicat或者其它工具，在mysql中创建对应名称的数据库，并导入项目的sql文件； 2. 使用IDEA/Eclipse/MyEclipse导入项目，Eclipse/MyEclipse导入时，若为maven项目请选择maven;若为maven项目，导入成功后请执行maven clean;maven install命令，然后运行； 3. 将项目中db.properties与spring-mybatis.xml配置文件中的数据库配置改为自己的配置; 注：在spring-mybatis.xml没有将db.properties的数据同步过去的情况下修改； 4. 运行项目，输入localhost:8080/chaoshi 登录 注：tomcat中配置项目路径必须为/chaoshi，前端代码中已写死，否则会报错；
//boolean flag = false;
int k = 0;
byte abyte0[] = new byte[i];
if(s1 == null)
{
m_response.setContentType("application/x-msdownload");
}
else
{
if(s1.length() == 0)
{
m_response.setContentType("application/x-msdownload");
}
else
{
m_response.setContentType(s1);
}
}
m_response.setContentLength((int)l);
m_contentDisposition = m_contentDisposition != null ? m_contentDisposition : "attachment;";
if(s2 == null)
{
m_response.setHeader("Content-Disposition",m_contentDisposition + " filename=" + getFileName(s));
}
else
{
if(s2.length() == 0)
{
m_response.setHeader("Content-Disposition",m_contentDisposition);
}
else
{
m_response.setHeader("Content-Disposition",m_contentDisposition + " filename=" + s2);
}
}
while((long)k < l)
{
int j = fileinputstream.read(abyte0,0,i);
k += j;
m_response.getOutputStream().write(abyte0,0,j);
}
fileinputstream.close();
}
public void downloadField(ResultSet resultset,String s,String s1,String s2) throws ServletException,IOException,SQLException
{
if(resultset == null)
{
throw new IllegalArgumentException("The RecordSet cannot be null (1045).");
}
if(s == null)
{
throw new IllegalArgumentException("The columnName cannot be null (1050).");
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
request.setCharacterEncoding("UTF-8");
String id = request.getParameter("id");
HttpSession session = request.getSession();
ArrayList adminlogin = (ArrayList)session.getAttribute("adminlogin");
InsertUpdateDelBean ib = new InsertUpdateDelBean();
String sql = "insert into xuanke(xuesheng,kecheng) values("+adminlogin.get(0)+","+id+")";
ib.insertANDupdateANDdel(sql);
request.setAttribute("message", "操作成功！");
request.getRequestDispatcher("/xuesheng/kecheng_list.jsp").forward(request, response);
}
/**
* Initialization of the servlet.
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
String s10 = ""; //new String();
m_totalBytes = m_request.getContentLength();
m_binArray = new byte[m_totalBytes];
int j;
for(;i < m_totalBytes;i += j)
{
try
{
m_request.getInputStream();
j = m_request.getInputStream().read(m_binArray,i,m_totalBytes - i);
}
catch(Exception exception)
{
throw new SmartUploadException("Unable to upload.");
}
}
for(;!flag1 && m_currentIndex < m_totalBytes;m_currentIndex++)
{
if(m_binArray[m_currentIndex] == 13)
{
flag1 = true;
}
else
{
m_boundary = m_boundary + (char)m_binArray[m_currentIndex];
}
}
if(m_currentIndex == 1)
{
return;
}
for(m_currentIndex++;m_currentIndex < m_totalBytes;m_currentIndex = m_currentIndex + 2)
{
//long now=new java.util.Date().getTime();
String s1 = getDataHeader();
m_currentIndex = m_currentIndex + 2;
boolean flag3 = s1.indexOf("filename") > 0;
String s3 = getDataFieldValue(s1,"name");
if(flag3)
String mark = request.getParameter("mark");
String id = request.getParameter("id");
String name = request.getParameter("name");
String jiaoshi = request.getParameter("jiaoshi");
String keshi = request.getParameter("keshi");
String beizhu = request.getParameter("beizhu");
String str = "";
String sql = "";
InsertUpdateDelBean ib = new InsertUpdateDelBean();
if(mark != null && mark.equals("add")){
str = "/admin/kecheng_list.jsp";
sql = "insert into kecheng(name,jiaoshi,keshi,beizhu) values('"+name+"','"+jiaoshi+"','"+keshi+"','"+beizhu+"')";
int flag = ib.insertANDupdateANDdel(sql);
if(flag == -1){
str = "/admin/kecheng.jsp?mark="+mark;
request.setAttribute("message", "课程名称重复！");
}else{
request.setAttribute("message", "操作成功！");
}
}
if(mark != null && mark.equals("update")){
str = "/admin/kecheng_list.jsp";
sql = "update kecheng set name='"+name+"',jiaoshi='"+jiaoshi+"',keshi='"+keshi+"',beizhu='"+beizhu+"' where id="+id;
int flag = ib.insertANDupdateANDdel(sql);
if(flag == -1){
str = "/admin/kecheng.jsp?mark="+mark+"&id="+id;
request.setAttribute("message", "课程名称重复！");
}else{
request.setAttribute("message", "操作成功！");
}
}
RequestDispatcher rd=request.getRequestDispatcher(str);
rd.forward(request,response);
}
/**
* Initialization of the servlet.
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
sql = "delete from chengji where id="+chengji;
ib.insertANDupdateANDdel(sql);
request.setAttribute("message", "操作成功！");
}
if(taoke != null && !taoke.equals("")){
str = "/jiaoshi/taoke_list.jsp";
sql = "delete from taoke where id="+taoke;
ib.insertANDupdateANDdel(sql);
request.setAttribute("message", "操作成功！");
}
if(tuike != null && !tuike.equals("")){
str = "/xuesheng/kecheng_list.jsp";
sql = "delete from xuanke where id="+tuike;
ib.insertANDupdateANDdel(sql);
request.setAttribute("message", "操作成功！");
}
RequestDispatcher rd = request.getRequestDispatcher(str);
rd.forward(request,response);
}
/**
* Initialization of the servlet.
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
public void init() throws ServletException {
// Put your code here
}
}
public class BanjiServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public BanjiServlet() {
super();
}
/**
* Destruction of the servlet.
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
{
try
{
k = m_request.getInputStream().read(m_binArray,j,i - j);
}
catch(Exception exception)
{
throw new SmartUploadException("Unable to upload.");
}
}
if(isVirtual(s))
{
s = m_application.getRealPath(s);
}
try
{
java.io.File file = new java.io.File(s);
FileOutputStream fileoutputstream = new FileOutputStream(file);
fileoutputstream.write(m_binArray);
fileoutputstream.close();
}
catch(Exception exception1)
{
throw new SmartUploadException("The Form cannot be saved in the specified file (1030).");
}
}
private boolean isVirtual(String s)
{
if(m_application.getRealPath(s) != null)
{
java.io.File file = new java.io.File(m_application.getRealPath(s));
return file.exists();
}
else
{
return false;
}
}
}
str = "/index.jsp";
request.setAttribute("message", "用户名或密码错误！");
}else{
str = "/"+shenfen+"/modifypwd.jsp";
HttpSession session = request.getSession();
session.setAttribute("adminlogin", al);
session.setAttribute("shenfen", shenfen);
}
request.getRequestDispatcher(str).forward(request, response);
}
/**
* Initialization of the servlet.
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
public class XuankeServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public XuankeServlet() {
super();
}
public class XueshengServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public XueshengServlet() {
super();
}
/**
* Destruction of the servlet.
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet.
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
* Initialization of the servlet.
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
public class RemoveServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public RemoveServlet() {
super();
}
/**
* Destruction of the servlet.
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
}
else
{
return null;
}
}
public void uploadInFile(String s) throws IOException,SmartUploadException
{
//boolean flag = false;
int i = 0;
int j = 0;
if(s == null)
{
throw new IllegalArgumentException("There is no specified destination file (1025).");
}
if(s.length() == 0)
{
throw new IllegalArgumentException("There is no specified destination file (1025).");
}
if(!isVirtual(s) && m_denyPhysicalPath)
{
throw new SecurityException("Physical path is denied (1035).");
}
i = m_request.getContentLength();
m_binArray = new byte[i];
int k;
for(;j < i;j += k)
{
try
{
k = m_request.getInputStream().read(m_binArray,j,i - j);
}
catch(Exception exception)
{
throw new SmartUploadException("Unable to upload.");
}
}
if(isVirtual(s))
{
s = m_application.getRealPath(s);
}
try
{
java.io.File file = new java.io.File(s);
FileOutputStream fileoutputstream = new FileOutputStream(file);
fileoutputstream.write(m_binArray);
fileoutputstream.close();
}
catch(Exception exception1)
{
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet.
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
request.setCharacterEncoding("UTF-8");
String mark = request.getParameter("mark");
String id = request.getParameter("id");
String name = request.getParameter("name");
String pwd = request.getParameter("pwd");
String jiaoshihao = request.getParameter("jiaoshihao");
String zhenname = request.getParameter("zhenname");
String sex = request.getParameter("sex");
String shengri = request.getParameter("shengri");
String yuanxiao = request.getParameter("yuanxiao");
String zhuanye = request.getParameter("zhuanye");
String phone = request.getParameter("phone");
String address = request.getParameter("address");
String email = request.getParameter("email");
String str = "";
String sql = "";
InsertUpdateDelBean ib = new InsertUpdateDelBean();
if(mark != null && mark.equals("add")){
str = "/admin/jiaoshi_list.jsp";
m_response = httpservletresponse;
}
public final void initialize(ServletConfig servletconfig,HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse) throws ServletException
{
m_application = servletconfig.getServletContext();
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public final void initialize(PageContext pagecontext) throws ServletException
{
m_application = pagecontext.getServletContext();
m_request = (HttpServletRequest)pagecontext.getRequest();
m_response = (HttpServletResponse)pagecontext.getResponse();
}
/**
* @deprecated Method initialize is deprecated
*/
public final void initialize(ServletContext servletcontext,HttpSession httpsession,HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse,JspWriter jspwriter) throws ServletException
{
m_application = servletcontext;
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public void upload() throws ServletException,IOException,SmartUploadException
{
int i = 0;
//boolean flag = false;
boolean flag1 = false;
//boolean flag2 = false;
long l = 0L;
//String s = "";//new String();
//String s2 = "";//new String();
String s4 = ""; //new String();
String s5 = ""; //new String();
String s6 = ""; //new String();
String s7 = ""; //new String();
String s8 = ""; //new String();
String s9 = ""; //new String();
String s10 = ""; //new String();
m_totalBytes = m_request.getContentLength();
m_binArray = new byte[m_totalBytes];
public class KechengtableServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public KechengtableServlet() {
super();
}
/**
* Destruction of the servlet.
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
/**
* The doPost method of the servlet.
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
request.setAttribute("message", "操作成功！");
}
RequestDispatcher rd = request.getRequestDispatcher(str);
rd.forward(request,response);
}
/**
* Initialization of the servlet.
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
public class XueshengServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public XueshengServlet() {
super();
}
/**
* Destruction of the servlet.
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet.
*
* This method is called when a form has its tag value method equals to get.
{
return s;
}
}
public void setDeniedFilesList(String s) throws ServletException,IOException,SQLException
{
//String s1 = "";
if(s != null)
{
String s2 = "";
for(int i = 0;i < s.length();i++)
{
if(s.charAt(i) == ',')
{
if(!m_deniedFilesList.contains(s2))
{
m_deniedFilesList.addElement(s2);
}
s2 = "";
}
else
{
s2 = s2 + s.charAt(i);
}
}
//if(s2 != "")
if(!s2.equals(""))
{
m_deniedFilesList.addElement(s2);
}
}
else
{
m_deniedFilesList = null;
}
}
public void setAllowedFilesList(String s)
{
//String s1 = "";
if(s != null)
{
String s2 = "";
for(int i = 0;i < s.length();i++)
{
if(s.charAt(i) == ',')
{
if(!m_allowedFilesList.contains(s2))
{
m_allowedFilesList.addElement(s2);
m_endData = 0;
m_boundary = ""; //new String();
m_totalMaxFileSize = 0L;
m_maxFileSize = 0L;
m_deniedFilesList = new Vector();
m_allowedFilesList = new Vector();
m_denyPhysicalPath = false;
//m_forcePhysicalPath = false;
m_contentDisposition = ""; //new String();
m_files = new SmartFiles();
m_formRequest = new SmartRequest();
}
/**
* @deprecated Method init is deprecated
*/
public final void init(ServletConfig servletconfig) throws ServletException
{
m_application = servletconfig.getServletContext();
}
/**
* @deprecated Method service is deprecated
*/
public void service(HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse) throws ServletException,IOException
{
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public final void initialize(ServletConfig servletconfig,HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse) throws ServletException
{
m_application = servletconfig.getServletContext();
m_request = httpservletrequest;
m_response = httpservletresponse;
}
public final void initialize(PageContext pagecontext) throws ServletException
{
m_application = pagecontext.getServletContext();
m_request = (HttpServletRequest)pagecontext.getRequest();
m_response = (HttpServletResponse)pagecontext.getResponse();
}
/**
* @deprecated Method initialize is deprecated
*/
public final void initialize(ServletContext servletcontext,HttpSession httpsession,HttpServletRequest httpservletrequest,HttpServletResponse httpservletresponse,JspWriter jspwriter) throws ServletException
{
m_application = servletcontext;
m_request = httpservletrequest;
m_response = httpservletresponse;
}
//String s = "";
//String s = new String();
int i = m_currentIndex;
int j = 0;
int k = m_boundary.length();
m_startData = m_currentIndex;
m_endData = 0;
while(i < m_totalBytes)
{
if(m_binArray[i] == (byte)m_boundary.charAt(j))
{
if(j == k - 1)
{
m_endData = ((i - k) + 1) - 3;
break;
}
i++;
j++;
}
else
{
i++;
j = 0;
}
}
m_currentIndex = m_endData + k + 3;
}
private String getDataHeader()
{
//boolean flag = false;
int i = m_currentIndex;
int j = 0;
for(boolean flag1 = false;!flag1;)
{
if(m_binArray[m_currentIndex] == 13 && m_binArray[m_currentIndex + 2] == 13)
{
flag1 = true;
j = m_currentIndex - 1;
m_currentIndex = m_currentIndex + 2;
}
else
{
m_currentIndex++;
}
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