高校学生考勤管理系统设计与简单实现
2024-05-11 14:34:06
高校学生考勤管理系统设计与简单实现
我进行这次设计的初衷是想把这个系统放到易班上，所以正常的情况下是应该是两个端口访问的，但是这里我就只用一个index链过去了吗，方便测试。
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>学生请假管理系统</title></head><body><a href="student.jsp">学生端</a><br><a href="teacher.jsp">教师端</a></body>
</html>
mysql：这里使用的mysql管理工具是 Navicat Premium 12百度网盘链接：https://pan.baidu.com/s/1MMmK_o5LiviNQkxGnG4R4g 提取码：dmdi 强烈推荐，非常好用。
student.jsp
<%@ page contentType="text/html;charset=gb2312" %>
<%@ page language="java" import=" java.util.Date"%>
<%@ page language="java" import=" java.text.SimpleDateFormat"%>
<HTML><body bgcolor=#33ccff>
<%Date date=new Date();SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); System.out.println(sdf.format(date)); String qingjia_time =(String)sdf.format(date);
%>
<center>
<font size=2>
<form action="insert_Servlet?dataBase=student&tableName=qingjia&qingjia_time=<%=qingjia_time%>" method=post>
<h3>请假</h3>
<table border=1>
<tr><td>学号： </td><td><Input type="text" name="stu_number"></td></tr>
<tr><td>班级： </td><td><Input type="text" name="class_id"></td></tr>
<tr><td>姓名： </td><td><Input type="text" name="stu_name"></td></tr>
<tr><td>请假开始时间：</td><td><Input type="text" name="start_time"></td></tr>
<tr><td>请假结束时间：</td><td><Input type="text" name="end_time"></td></tr>
<tr><td>请假原因： </td><td><Input type="text" name="qingjia_yuanyin"></td></tr>
</table>
<br><input type="submit" name="b" value="提交">
</font></center>
</body></HTML>teacher.jsp
<%@ page contentType="text/html;charset=GB2312" %>
<HTML>
<BODY>
<Font size=4>
<FORM action="Select_class_Servlet?dataBase=student&tableName=qingjia" Method="post"><P>班级查询<P>输入班级:<Input type=text name="class_id"><Input type=submit name="a" value="提交">
</Form>
<FORM action="Select_number_Servlet?dataBase=student&tableName=qingjia" Method="post"><P>学号查询<P>输入学号:<Input type=text name="stu_number"><Input type=submit name="b" value="提交">
</Form>
</BODY></HTML>showRecord.jsp
<%@ page contentType="text/html;charset=gb2312" %>
<jsp:useBean id="resultBean" class="mybean.data.studentinfo" scope="request"/>
<HTML><body bgcolor=#DEEFF9><font size=2><table border=1><% String []columnName=resultBean.getColumnName(); %><tr><th>编号</th><th>学生学号</th><th>班级</th><th>姓名</th><th>开始时间</th><th>结束时间</th><th>申请请假时间</th><th>请假原因</th><th>辅导员审批状态</th><th>辅导员审批时间</th><th>辅导员回复</th></tr><% String [][] record = resultBean.getTableRecord();for(int i=0;i<record.length;i++) {%> <tr><% for(int j=0;j<record[i].length;j++) {%> <td><%= record[i][j] %> </td><% }%> </tr><% }%></table>
<center>
<font size=2>
<form action="delete_Servlet?dataBase=student&tableName=qingjia" method=post>
<h3>输入ID删除请假记录</h3>
<table border=1>
<tr><td>ID:</td><td><Input type="text" name="ID"></td></tr>
<tr><td>学号：</td><td><Input type="text" name="stu_number"></td></tr>
</table>
<br><input type="submit" name="b" value="提交">
</font>
</center>
</font></body></HTML> showRecord_teacher.jsp
<%@ page contentType="text/html;charset=gb2312" %>
<%@ page language="java" import=" java.util.Date"%>
<%@ page language="java" import=" java.text.SimpleDateFormat"%>
<jsp:useBean id="resultBean" class="mybean.data.studentinfo" scope="request"/>
<HTML><body bgcolor=#DEEFF9><font size=2><table border=1><%Date date=new Date();SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); System.out.println(sdf.format(date)); String class_teacher_sp_time =(String)sdf.format(date);%><% String []columnName=resultBean.getColumnName(); %><tr><th>编号</th><th>学生学号</th><th>班级</th><th>姓名</th><th>开始时间</th><th>结束时间</th><th>申请请假时间</th><th>请假原因</th><th>辅导员审批状态</th><th>辅导员审批时间</th><th>辅导员回复</th></tr><% String [][] record = resultBean.getTableRecord();for(int i=0;i<record.length;i++) {%> <tr><% for(int j=0;j<record[i].length;j++) {%> <td><%= record[i][j] %> </td><% }%> </tr><% }%></table>
<center>
<font size=2>
<form action="insert_Sp_Servlet?dataBase=student&tableName=qingjia&class_teacher_sp_time=<%=class_teacher_sp_time%>" method=post>
<h3>输入ID进行审批</h3>
<table border=1>
<tr><td>ID:</td><td><Input type="text" name="ID"></td></tr>
<tr><td>辅导员审批状态：</td><td><Input type="text" name="class_teacher_status"></td></tr>
<tr><td>辅导员回复：</td><td><Input type="text" name="class_teacher_restore"></td></tr>
<tr>注：0为等待审批，1为同意请假，2为不同意请假</tr>
</table>
<br><input type="submit" name="b" value="提交">
</font>
</center>
</font></body></HTML> web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"><display-name></display-name><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>Insert_Servlet</servlet-name><servlet-class>myservlet.control.Insert_Servlet</servlet-class></servlet><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>Delete_Servlet</servlet-name><servlet-class>myservlet.control.Delete_Servlet</servlet-class></servlet><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>Select_class_Servlet</servlet-name><servlet-class>myservlet.control.Select_class_Servlet</servlet-class></servlet><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>Select_number_Servlet</servlet-name><servlet-class>myservlet.control.Select_number_Servlet</servlet-class></servlet><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>Insert_Sp_Servlet</servlet-name><servlet-class>myservlet.control.Insert_Sp_Servlet</servlet-class></servlet><servlet-mapping><servlet-name>Insert_Servlet</servlet-name><url-pattern>/insert_Servlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>Delete_Servlet</servlet-name><url-pattern>/delete_Servlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>Select_class_Servlet</servlet-name><url-pattern>/Select_class_Servlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>Select_number_Servlet</servlet-name><url-pattern>/Select_number_Servlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>Insert_Sp_Servlet</servlet-name><url-pattern>/insert_Sp_Servlet</url-pattern></servlet-mapping> <welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list>
</web-app>studentinfo.java
package mybean.data;public class studentinfo {String []columnName ; //存放列名String [][] tableRecord=null; //存放查询到的记录public studentinfo() {tableRecord = new String[1][1];columnName = new String[1]; }public void setTableRecord(String [][] s){tableRecord=s;}public String [][] getTableRecord(){return tableRecord;}public void setColumnName(String [] s) {columnName = s;}public String [] getColumnName() {return columnName;}
}Delete_Servlet.java
package myservlet.control;
import mybean.data.studentinfo;
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Delete_Servlet extends HttpServlet{public void init(ServletConfig config) throws ServletException{super.init(config);}public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{studentinfo resultBean=null;try{ resultBean=(studentinfo)request.getAttribute("resultBean");if(resultBean==null){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);}}catch(Exception exp){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);} try{ Class.forName("com.mysql.jdbc.Driver");//加载驱动}catch(Exception e){} request.setCharacterEncoding("gb2312");String dataBase = request.getParameter("dataBase");String tableName = request.getParameter("tableName");String stu_number=request.getParameter("stu_number");String id=request.getParameter("ID");String stu_name=request.getParameter("stu_name");String start_time=request.getParameter("start_time");String end_time=request.getParameter("end_time");String qingjia_time=request.getParameter("qingjia_time");String qingjia_yuanyin=request.getParameter("qingjia_yuanyin");if(id==null||id.length()==0) {fail(request,response,"添加记录失败,必须给出记录");return;}String condition = "DELETE FROM "+tableName+" where id='"+id+"'";System.out.println(condition);Connection con;Statement sql; ResultSet rs;try{ String uri= "jdbc:mysql://localhost/"+dataBase+"?characterEncoding=utf8";con=DriverManager.getConnection(uri,"root","root1");//建立连接sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);sql.executeUpdate(condition);// System.out.println("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");rs=sql.executeQuery("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");ResultSetMetaData metaData = rs.getMetaData();int columnCount = metaData.getColumnCount(); //得到结果集的列数String []columnName = new String[columnCount];for(int i=0;i<columnName.length;i++) {columnName[i] = metaData.getColumnName(i+1); //得到列名}resultBean.setColumnName(columnName); //更新Javabean数据模型rs.last();int rowNumber=rs.getRow(); //得到记录数String [][] tableRecord=resultBean.getTableRecord();tableRecord = new String[rowNumber][columnCount];rs.beforeFirst();int i=0;while(rs.next()){for(int k=0;k<columnCount;k++) tableRecord[i][k] = rs.getString(k+1);i++; }resultBean.setTableRecord(tableRecord); //更新Javabean数据模型con.close();RequestDispatcher dispatcher=request.getRequestDispatcher("showRecord.jsp");dispatcher.forward(request,response);}catch(SQLException e){System.out.println(e);fail(request,response,"添加记录失败:"+e.toString());} }public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{doPost(request,response);}public void fail(HttpServletRequest request,HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=GB2312");try {PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+backNews+"</h2>") ;out.println("返回");out.println("<a href=student.jsp>输入记录</a>");out.println("</body></html>");}catch(IOException exp){} }
}Insert_Servlet.java
package myservlet.control;
import mybean.data.studentinfo;
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Insert_Servlet extends HttpServlet{public void init(ServletConfig config) throws ServletException{super.init(config);}public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{studentinfo resultBean=null;try{ resultBean=(studentinfo)request.getAttribute("resultBean");if(resultBean==null){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);}}catch(Exception exp){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);} try{ Class.forName("com.mysql.jdbc.Driver");//加载驱动}catch(Exception e){} request.setCharacterEncoding("gb2312");String dataBase = request.getParameter("dataBase");String tableName = request.getParameter("tableName");String stu_number=request.getParameter("stu_number");String class_id=request.getParameter("class_id");String stu_name=request.getParameter("stu_name");String start_time=request.getParameter("start_time");String end_time=request.getParameter("end_time");String qingjia_time=request.getParameter("qingjia_time");String qingjia_yuanyin=request.getParameter("qingjia_yuanyin");if(stu_number==null||stu_number.length()==0) {fail(request,response,"添加记录失败,必须给出记录");return;}String condition = "INSERT INTO "+tableName+"(stu_number,class_id,stu_name,start_time,end_time,qingjia_time,qingjia_yuanyin) VALUES"+"('"+stu_number+"','"+class_id+"','"+stu_name+"','"+start_time+"','"+end_time+"','"+qingjia_time+"','"+qingjia_yuanyin+"')";//System.out.println(condition);Connection con;Statement sql; ResultSet rs;try{ String uri= "jdbc:mysql://localhost/"+dataBase+"?characterEncoding=utf8";con=DriverManager.getConnection(uri,"root","root1");//建立连接sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);sql.executeUpdate(condition);System.out.println("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");rs=sql.executeQuery("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");ResultSetMetaData metaData = rs.getMetaData();int columnCount = metaData.getColumnCount(); //得到结果集的列数String []columnName = new String[columnCount];for(int i=0;i<columnName.length;i++) {columnName[i] = metaData.getColumnName(i+1); //得到列名}resultBean.setColumnName(columnName); //更新Javabean数据模型rs.last();int rowNumber=rs.getRow(); //得到记录数String [][] tableRecord=resultBean.getTableRecord();tableRecord = new String[rowNumber][columnCount];rs.beforeFirst();int i=0;while(rs.next()){for(int k=0;k<columnCount;k++) tableRecord[i][k] = rs.getString(k+1);i++; }resultBean.setTableRecord(tableRecord); //更新Javabean数据模型con.close();RequestDispatcher dispatcher=request.getRequestDispatcher("showRecord.jsp");dispatcher.forward(request,response);}catch(SQLException e){System.out.println(e);fail(request,response,"添加记录失败:"+e.toString());} }public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{doPost(request,response);}public void fail(HttpServletRequest request,HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=GB2312");try {PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+backNews+"</h2>") ;out.println("返回");out.println("<a href=student.jsp>输入记录</a>");out.println("</body></html>");}catch(IOException exp){} }
}Insert_Sp_Servlet.java
package myservlet.control;
import mybean.data.studentinfo;
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Insert_Sp_Servlet extends HttpServlet{public void init(ServletConfig config) throws ServletException{super.init(config);}public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{studentinfo resultBean=null;try{ resultBean=(studentinfo)request.getAttribute("resultBean");if(resultBean==null){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);}}catch(Exception exp){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);} try{ Class.forName("com.mysql.jdbc.Driver");//加载驱动}catch(Exception e){} request.setCharacterEncoding("gb2312");String dataBase = request.getParameter("dataBase");String tableName = request.getParameter("tableName");String id=request.getParameter("ID");String class_teacher_status=request.getParameter("class_teacher_status");String class_teacher_sp_time=request.getParameter("class_teacher_sp_time");String class_teacher_restore=request.getParameter("class_teacher_restore");if(class_teacher_sp_time==null||class_teacher_sp_time.length()==0) {fail(request,response,"添加记录失败,必须给出记录");return;}String condition = "UPDATE "+tableName+" SET class_teacher_status='"+class_teacher_status+"' , class_teacher_sp_time='"+class_teacher_sp_time+"' ,class_teacher_restore='"+class_teacher_restore+"'"+" where id='"+id+"'";System.out.println(condition);Connection con;Statement sql; ResultSet rs;try{ String uri= "jdbc:mysql://localhost/"+dataBase+"?characterEncoding=utf8";con=DriverManager.getConnection(uri,"root","root1");//建立连接sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);sql.executeUpdate(condition);System.out.println("SELECT * FROM "+tableName+" where id='"+id+"'");rs=sql.executeQuery("SELECT * FROM "+tableName+" where id='"+id+"'");ResultSetMetaData metaData = rs.getMetaData();int columnCount = metaData.getColumnCount(); //得到结果集的列数String []columnName = new String[columnCount];for(int i=0;i<columnName.length;i++) {columnName[i] = metaData.getColumnName(i+1); //得到列名}resultBean.setColumnName(columnName); //更新Javabean数据模型rs.last();int rowNumber=rs.getRow(); //得到记录数String [][] tableRecord=resultBean.getTableRecord();tableRecord = new String[rowNumber][columnCount];rs.beforeFirst();int i=0;while(rs.next()){for(int k=0;k<columnCount;k++) tableRecord[i][k] = rs.getString(k+1);i++; }resultBean.setTableRecord(tableRecord); //更新Javabean数据模型con.close();RequestDispatcher dispatcher=request.getRequestDispatcher("showRecord.jsp");dispatcher.forward(request,response);}catch(SQLException e){System.out.println(e);fail(request,response,"添加记录失败:"+e.toString());} }public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{doPost(request,response);}public void fail(HttpServletRequest request,HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=GB2312");try {PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+backNews+"</h2>") ;out.println("返回");out.println("<a href=student.jsp>输入记录</a>");out.println("</body></html>");}catch(IOException exp){} }
}Select_class_Servlet.java
package myservlet.control;
import mybean.data.studentinfo;
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Select_class_Servlet extends HttpServlet{public void init(ServletConfig config) throws ServletException{super.init(config);}public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{studentinfo resultBean=null;try{ resultBean=(studentinfo)request.getAttribute("resultBean");if(resultBean==null){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);}}catch(Exception exp){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);} try{ Class.forName("com.mysql.jdbc.Driver");//加载驱动}catch(Exception e){} request.setCharacterEncoding("gb2312");String dataBase = request.getParameter("dataBase");String tableName = request.getParameter("tableName");String class_id=request.getParameter("class_id");if( class_id==null||class_id.length()==0) {fail(request,response,"添加记录失败,必须给出记录");return;}Connection con;Statement sql; ResultSet rs;try{ String uri= "jdbc:mysql://localhost/"+dataBase+"?characterEncoding=utf8";con=DriverManager.getConnection(uri,"root","root1");//建立连接sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY); // System.out.println("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");rs=sql.executeQuery("SELECT * FROM "+tableName+" where class_id='"+ class_id+"'");ResultSetMetaData metaData = rs.getMetaData();int columnCount = metaData.getColumnCount(); //得到结果集的列数String []columnName = new String[columnCount];for(int i=0;i<columnName.length;i++) {columnName[i] = metaData.getColumnName(i+1); //得到列名}resultBean.setColumnName(columnName); //更新Javabean数据模型rs.last();int rowNumber=rs.getRow(); //得到记录数String [][] tableRecord=resultBean.getTableRecord();tableRecord = new String[rowNumber][columnCount];rs.beforeFirst();int i=0;while(rs.next()){for(int k=0;k<columnCount;k++) tableRecord[i][k] = rs.getString(k+1);i++; }resultBean.setTableRecord(tableRecord); //更新Javabean数据模型con.close();RequestDispatcher dispatcher=request.getRequestDispatcher("showRecord_teacher.jsp");dispatcher.forward(request,response);}catch(SQLException e){System.out.println(e);fail(request,response,"添加记录失败:"+e.toString());} }public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{doPost(request,response);}public void fail(HttpServletRequest request,HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=GB2312");try {PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+backNews+"</h2>") ;out.println("返回");out.println("<a href=showRecord_teacher.jsp>输入记录</a>");out.println("</body></html>");}catch(IOException exp){} }
}Select_number_Servlet.java
package myservlet.control;
import mybean.data.studentinfo;
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Select_number_Servlet extends HttpServlet{public void init(ServletConfig config) throws ServletException{super.init(config);}public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{studentinfo resultBean=null;try{ resultBean=(studentinfo)request.getAttribute("resultBean");if(resultBean==null){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);}}catch(Exception exp){resultBean=new studentinfo(); //创建Javabean对象request.setAttribute("resultBean",resultBean);} try{ Class.forName("com.mysql.jdbc.Driver");//加载驱动}catch(Exception e){} request.setCharacterEncoding("gb2312");String dataBase = request.getParameter("dataBase");String tableName = request.getParameter("tableName");String stu_number=request.getParameter("stu_number");if( stu_number==null||stu_number.length()==0) {fail(request,response,"添加记录失败,必须给出记录");return;}Connection con;Statement sql; ResultSet rs;try{ String uri= "jdbc:mysql://localhost/"+dataBase+"?characterEncoding=utf8";con=DriverManager.getConnection(uri,"root","root1");//建立连接sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY); // System.out.println("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");rs=sql.executeQuery("SELECT * FROM "+tableName+" where stu_number='"+stu_number+"'");ResultSetMetaData metaData = rs.getMetaData();int columnCount = metaData.getColumnCount(); //得到结果集的列数String []columnName = new String[columnCount];for(int i=0;i<columnName.length;i++) {columnName[i] = metaData.getColumnName(i+1); //得到列名}resultBean.setColumnName(columnName); //更新Javabean数据模型rs.last();int rowNumber=rs.getRow(); //得到记录数String [][] tableRecord=resultBean.getTableRecord();tableRecord = new String[rowNumber][columnCount];rs.beforeFirst();int i=0;while(rs.next()){for(int k=0;k<columnCount;k++) tableRecord[i][k] = rs.getString(k+1);i++; }resultBean.setTableRecord(tableRecord); //更新Javabean数据模型con.close();RequestDispatcher dispatcher=request.getRequestDispatcher("showRecord_teacher.jsp");dispatcher.forward(request,response);}catch(SQLException e){System.out.println(e);fail(request,response,"添加记录失败:"+e.toString());} }public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{doPost(request,response);}public void fail(HttpServletRequest request,HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=GB2312");try {PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+backNews+"</h2>") ;out.println("返回");out.println("<a href=showRecord_teacher.jsp>输入记录</a>");out.println("</body></html>");}catch(IOException exp){} }
}值得注意的是，jdbc要用5.0的
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