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基于javaweb的JSP+Servlet在线学生选课管理系统(java+jsp+bootstrap+jquery+servlet+mysql)

更新于

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

改070023592402

080023592402

090023592402

100023592402

110023592402

130023592402

基于javaweb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；

技术栈

  1. 后端：servlet 2. 前端：JSP+bootstrap+jQuery

使用说明

  1. 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；  

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    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++;
        }
    }

    String s = new String(m_binArray,i,(j - i) + 1);
    return s;
}

private String getFileName(String s)
{
    //String s1 = ""; // = new String();
    //String s2 = ""; // = new String();
    //boolean flag = false;
    //boolean flag1 = false;
    //boolean flag2 = false;
    int i = 0;
    i = s.lastIndexOf('/');
    if(i != -1)
    {
        return s.substring(i + 1,s.length());
    }
    i = s.lastIndexOf('\\');
    if(i != -1)
    {
        return s.substring(i + 1,s.length());
    }
    else
    {
        return s;
    }
}

public void setDeniedFilesList(String s) throws ServletException,IOException,SQLException
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String s1 = ""; //new String();
String s2 = ""; //new String();
String s3 = ""; //new String();
boolean flag = false;
s3 = System.getProperty("file.separator");
if(s == null)
{
    throw new IllegalArgumentException("There is no specified destination file (1140).");
}
if(s.equals(""))
{
    throw new IllegalArgumentException("There is no specified destination file (1140).");
}
if(s.lastIndexOf("\\") >= 0)
{
    s1 = s.substring(0,s.lastIndexOf("\\"));
    s2 = s.substring(s.lastIndexOf("\\") + 1);
}
if(s.lastIndexOf("/") >= 0)
{
    s1 = s.substring(0,s.lastIndexOf("/"));
    s2 = s.substring(s.lastIndexOf("/") + 1);
}
s1 = s1.length() != 0 ? s1 : "/";
java.io.File file = new java.io.File(s1);
if(file.exists())
{
    flag = true;
}
if(i == 0)
{
    if(isVirtual(s1))
    {
        s1 = m_application.getRealPath(s1);
        if(s1.endsWith(s3))
        {
            s1 = s1 + s2;
        }
        else
        {
            s1 = s1 + s3 + s2;
        }
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    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)
    {
        s6 = getDataFieldValue(s1,"filename");   
        s4 = getFileName(s6);   
        s5 = getFileExt(s4);
        s7 = getContentType(s1);
        s8 = getContentDisp(s1);
        s9 = getTypeMIME(s7);
        s10 = getSubTypeMIME(s7);
    }
    getDataSection();
    if(flag3 && s4.length() > 0)
    {
        if(m_deniedFilesList.contains(s5))
        {
            throw new SecurityException("The extension of the file is denied to be uploaded (1015).");
        }
        if(!m_allowedFilesList.isEmpty() && !m_allowedFilesList.contains(s5))
        {
            throw new SecurityException("The extension of the file is not allowed to be uploaded (1010).");
        }
        if(m_maxFileSize > 0L && (long)((m_endData - m_startData) + 1) > m_maxFileSize)
        {
            throw new SecurityException("Size exceeded for this file : " + s4 + " (1105).");
        }
        l += (m_endData - m_startData) + 1;
        if(m_totalMaxFileSize > 0L && l > m_totalMaxFileSize)
        {
            throw new SecurityException("Total File Size exceeded (1110).");
        }
    }
    if(flag3)
    {
        SmartFile file = new SmartFile();
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public class UserLoginServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public UserLoginServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * 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. <br>
	 *
	 * 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
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			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. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
package servlet;



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    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++;
        }
    }

    String s = new String(m_binArray,i,(j - i) + 1);
    return s;
}

项目链接：
https://javayms.github.io?id=271122572008200tk
https://javayms.pages.dev?id=271122572008200tk