考试卡的增删改查
Ka类：
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import passage.Card;
import passage.Student;
import passage.Card;
import tool.Tool;
public class Ka {
public void add(Card stu) {
Connection conn=Tool.getConnection();
String sql="insert into biao (cid,cname,cteacher,couid,counat,credit,couclass,coum,testway,testdata,testcount,testm,testgrade,testeva,testa) values (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
try {
PreparedStatement ps=conn.prepareStatement(sql);
ps.setString(1,stu.getCardId());
ps.setString(2,stu.getCourseName());
ps.setString(3, stu.getCourseTeacher());
ps.setString(4, stu.getCourseID());
ps.setString(5, stu.getCourseNature());
ps.setString(6, stu.getCredit());
ps.setString(7, stu.getCourseClass());
ps.setString(8,stu.getCourseMajor());
ps.setString(9,stu.getTestWay());
ps.setString(10, stu.getTestData());
ps.setString(11, stu.getTestCount());
ps.setString(12, stu.getTestMethod());
ps.setString(13, stu.getTestGrade());
ps.setString(14, stu.getTestEvaluation());
ps.setString(15, stu.getTestAnalysis());
ps.executeUpdate();
}catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, null, null);
}
}
public void del(String num) {//删除
Connection connn=null;
PreparedStatement preparedStatement=null;
try {
connn= Tool.getConnection();
String sql="delete from biao where cid=?";
preparedStatement=connn.prepareStatement(sql);
preparedStatement.setString(1,num);
preparedStatement.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}finally {
Tool.release(connn,preparedStatement,null);
}
}
public List<Card> findAll(){//浏览
List<Card> list=new ArrayList<>();
Connection connection=null;
PreparedStatement preparedStatement=null;
ResultSet resultSet=null;
try {
//调用Tool连接mysql数据库
connection= Tool.getConnection();
String sql="select * from biao";//查询语句
preparedStatement=connection.prepareStatement(sql);
resultSet = preparedStatement.executeQuery();
while (resultSet.next()){
//从resultSet拿出每个属性数据
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String time=resultSet.getString("cteacher");
String couid=resultSet.getString("couid");
String counat=resultSet.getString("counat");
String credit=resultSet.getString("credit");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
String testway=resultSet.getString("testway");
String testdata=resultSet.getString("testdata");
String testcount=resultSet.getString("testcount");
String testm=resultSet.getString("testm");
String testgrade=resultSet.getString("testgrade");
String testeva=resultSet.getString("testeva");
String testa=resultSet.getString("testa");
//String name,String bianhao, String time, String jieci, String xueyuan, String teanum, String teaname,
//String renshu
Card student = new Card(cid,null,cname,time,couid,counat,credit,couclass,coum,testway,testdata,testcount,testm,testgrade,testeva,testa,null,null,null,null,null);
list.add(student);//可能多条数据，放到集合中
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
//调用JDBCTools，关闭connection，preparedStatement，resultSet
Tool.release(connection,preparedStatement,resultSet);
}
return list;
}
public Card finds(String num) {//查询
Connection conn=Tool.getConnection();
PreparedStatement pre=null;
ResultSet resultSet=null;
Card stu=null;
String sql="SELECT *FROM biao where cid=? ";
try {
pre=conn.prepareStatement(sql);
pre.setString(1, num);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String time=resultSet.getString("cteacher");
String couid=resultSet.getString("couid");
String counat=resultSet.getString("counat");
String credit=resultSet.getString("credit");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
String testway=resultSet.getString("testway");
String testdata=resultSet.getString("testdata");
String testcount=resultSet.getString("testcount");
String testm=resultSet.getString("testm");
String testgrade=resultSet.getString("testgrade");
String testeva=resultSet.getString("testeva");
String testa=resultSet.getString("testa");
stu = new Card(cid,null,cname,time,couid,counat,credit,couclass,coum,testway,testdata,testcount,testm,testgrade,testeva,testa,null,null,null,null,null);
}
}
catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
return stu;
}
public void Up(String cid,String kname,String teachername,String kenum,String xingzhi,String xuefen,String ban,String zhuanye,String fangshi,String time,String ren,String mingti,String zucheng,String kf,String fenxi ) {//修改
Connection connn=null;
PreparedStatement preparedStatement=null;
try {
connn=Tool.getConnection();
String sql="update biao set cname=?,cteacher=?,couid=?,counat=?,credit=?,couclass=?,coum=?,testway=?,testdata=?,testcount=?,testm=?,testgrade=?,testeva=?,testa=? where cid=?";
preparedStatement=connn.prepareStatement(sql);
preparedStatement.setString(1,kname);
preparedStatement.setString(2,teachername);
preparedStatement.setString(3,kenum);
preparedStatement.setString(4,xingzhi);
preparedStatement.setString(5,xuefen);
preparedStatement.setString(6,ban);
preparedStatement.setString(7,zhuanye);
preparedStatement.setString(8,fangshi);
preparedStatement.setString(9,time);
preparedStatement.setString(10,ren);
preparedStatement.setString(11,mingti);
preparedStatement.setString(12,zucheng);
preparedStatement.setString(13,kf);
preparedStatement.setString(14,fenxi);
preparedStatement.setString(15,cid);
preparedStatement.executeUpdate();
}
catch(SQLException e) {
e.printStackTrace();
} finally {
Tool.release(connn,preparedStatement,null);
}
}
public String find(String name,String kclass,String zhuanye) {//查询
Connection conn=Tool.getConnection();
PreparedStatement pre=null;
ResultSet resultSet=null;
String stu=null;
if(name!=null&&kclass!=null&&zhuanye!=null) {
try {
String sql="SELECT *FROM biao where cname=? and couclass=? and coum=?";
pre=conn.prepareStatement(sql);
pre.setString(1, name);
pre.setString(2, kclass);
pre.setString(3, zhuanye);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}
}
catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}else if(name==null&&kclass!=null&&zhuanye!=null) {
try {
String sql="SELECT *FROM biao where couclass=? and coum=?";
pre=conn.prepareStatement(sql);
pre.setString(1, kclass);
pre.setString(2, zhuanye);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}
} catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}else if(name==null&&kclass!=null&&zhuanye==null) {
try {
String sql="SELECT *FROM biao where couclass=?";
pre=conn.prepareStatement(sql);
pre.setString(1, kclass);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}
} catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}else if(name==null&&kclass==null&&zhuanye!=null) {
try {
String sql="SELECT *FROM biao where coum=?";
pre=conn.prepareStatement(sql);
pre.setString(1,zhuanye);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}} catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}else if(name!=null&&kclass==null&&zhuanye!=null) {
try {
String sql="SELECT *FROM biao where cname=? and coum=?";
pre=conn.prepareStatement(sql);
pre.setString(1, name);
pre.setString(2, zhuanye);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}
} catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}else if(name!=null&&kclass==null&&zhuanye==null) {
try {
String sql="SELECT *FROM biao where cname=? ";
pre=conn.prepareStatement(sql);
pre.setString(1, name);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}
} catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}else {
try {
String sql="SELECT *FROM biao where cname=? and kclass=?";
pre=conn.prepareStatement(sql);
pre.setString(1, name);
pre.setString(2, kclass);
resultSet=pre.executeQuery();
while(resultSet.next()) {
String cid=resultSet.getString("cid");
String cname=resultSet.getString("cname");
String couclass=resultSet.getString("couclass");
String coum=resultSet.getString("coum");
stu="编号:"+cid+" 课程名称:"+cname+" 授课班级:"+couclass+" 授课专业:"+coum;
}
}
catch(SQLException e) {
e.printStackTrace();
}finally{
Tool.release(conn, pre, resultSet);
}
}
return stu;
}
}
Kasev类：
import java.io.IOException;
import java.util.List;
import passage.Card;
import passage.Student;
import passage.Card;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
@WebServlet("/ka")
public class Kasev extends HttpServlet{
Ka d=new Ka();
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
String method=request.getParameter("method");
if (method==null){
method="findall";
}
switch (method){
case "add":
String cid= request.getParameter("num");
String kname=request.getParameter("kname");
String teachername=request.getParameter("teachername");
String kenum=request.getParameter("kenum");
String xingzhi=request.getParameter("xingzhi");
String xuefen=request.getParameter("xuefen");
String ban=request.getParameter("ban");
String zhuanye=request.getParameter("zhuanye");
String fangshi=request.getParameter("fangshi");
String time=request.getParameter("time");
String ren=request.getParameter("ren");
String mingti=request.getParameter("mingti");
String zucheng=request.getParameter("zucheng");
String kf=request.getParameter("kf");
String fenxi=request.getParameter("fenxi");
Card c=new Card(cid,null,kname,teachername,kenum,xingzhi,xuefen,ban,zhuanye,fangshi,time,ren,mingti,zucheng,kf,fenxi,null,null,null,null,null);
d.add(c);
request.setAttribute("test", "添加并且保存成功");
request.getRequestDispatcher("xts.jsp").forward(request, response);
break;
case "delete":
String num2=request.getParameter("num");
d.del(num2);
request.setAttribute("test", "删除成功");
request.getRequestDispatcher("xts.jsp").forward(request, response);
break;
case "findall":
List<Card> list = d.findAll();
request.setAttribute("test", list);
request.getRequestDispatcher("mmesss.jsp").forward(request, response);
break;
case "findalls":
List<Card> lists = d.findAll();
request.setAttribute("test", lists);
request.getRequestDispatcher("ll.jsp").forward(request, response);
break;
case "findByid":String num3=request.getParameter("num");
Card s=d.finds(num3);
request.setAttribute("test", s);
request.getRequestDispatcher("updatec.jsp").forward(request, response);
break;
case "findByids":
String knames= request.getParameter("kname");
String keclass=request.getParameter("keclass");
String zhuanyes=request.getParameter("zhuanye");
String res=d.find(knames, keclass, zhuanyes);
request.setAttribute("test", res);
request.getRequestDispatcher("xts.jsp").forward(request, response);
break;
case "up":
String cid1= request.getParameter("num");
String kname1=request.getParameter("kname");
String teachername1=request.getParameter("teachername");
String kenum1=request.getParameter("kenum");
String xingzhi1=request.getParameter("xingzhi");
String xuefen1=request.getParameter("xuefen");
String ban1=request.getParameter("ban");
String zhuanye1=request.getParameter("zhuanye");
String fangshi1=request.getParameter("fangshi");
String time1=request.getParameter("time");
String ren1=request.getParameter("ren");
String mingti1=request.getParameter("mingti");
String zucheng1=request.getParameter("zucheng");
String kf1=request.getParameter("kf");
String fenxi1=request.getParameter("fenxi");
d.Up(cid1,kname1,teachername1,kenum1,xingzhi1,xuefen1,ban1,zhuanye1,fangshi1,time1,ren1,mingti1,zucheng1,kf1,fenxi1);
request.setAttribute("test", "修改成功");
request.getRequestDispatcher("xts.jsp").forward(request, response);
break;
}
}
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
doPost(request,response);
}
}
zhuanjiao.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<center>
<p><a href="addk.jsp">新增试卷审批卡</a>
</p>
<p><a href="ka?method=findall">修改或删除试卷审批卡</a>
</p>
<p><a href="ka?method=findalls">浏览试卷审批卡信息</a>
</p>
<p><a href="find.jsp">查询考试信息</a>
</p>
</center>
</body>
</html>
addk.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<form action="ka" method="post">
<center>
<p>试卷编号
<input type="text" name="num"/>
</p>
<p>课程名称
<input type="text" name="kname"/>
</p>
<p>任课教师
<input type="text" name="teachername"/>
</p>
<p>课程代码
<input type="text" name="kenum"/>
</p>
<p>课程性质：
<input type="radio" name="xingzhi" value="必修" checked/>必修
<input type="radio" name="xingzhi" value="选修"/>必修
</p>
<p>学分
<input type="text" name="xuefen"/>
</p>
<p>授课班级
<input type="text" name="ban"/>
</p>
<p>授课专业
<input type="text" name="zhuanye"/>
</p>
<p>考试方式：
<input type="radio" name="fangshi" value="闭卷" checked/>闭卷
<input type="radio" name="fangshi" value="开卷"/>开卷
<input type="radio" name="fangshi" value="其他"/>其他
</p>
<p>考试时间
<input type="text" name="time"/>
</p>
<p>考试人数
<input type="text" name="ren"/>
</p>
<p>命题方式
<input type="text" name="mingti"/>
</p>
<p>成绩组成
<input type="text" name="zucheng"/>
</p>
<p>考核与评价方式
<input type="text" name="kf"/>
</p>
<p>考核内容合理性分析
<input type="text" name="fenxi"/>
</p>
<input type="hidden" name="method" value="add"/>
<p>
<input type="submit" value="提交">
</p>
</center>
</form>
</body>
</html>
xts.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<center>
<%=request.getAttribute("test")%>
</p>
</center>
</form>
</body>
</html>
mmesss.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<center>
<c:forEach items="${test}" var="list">
<tr>
<td>${list.getCardId()}</td>
<td>${list.getCourseName()}</td>
<td>${list.getCourseTeacher()}</td>
<td>${list.getCourseID()}</td>
<td>${list.getCourseNature()}</td>
<td>${list.getCredit()}</td>
<td>${list.getCourseClass()}</td>
<td>${list.getCourseMajor()}</td>
<td>${list.getTestWay()}</td>
<td>${list.getTestData()}</td>
<td>${list.getTestCount()}</td>
<td>${list.getTestMethod()}</td>
<td>${list.getTestGrade()}</td>
<td>${list.getTestEvaluation()}</td>
<td>${list.getTestAnalysis()}</td>
<td>
<td>
<a href="ka?method=delete&num=${list.getCardId()}">删除</a>
<a href="ka?method=findByid&num=${list.getCardId()}">修改</a>
</td>
<br></br>
</tr>
</c:forEach>
</center>
</body>
</html>
ll.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<center>
<c:forEach items="${test}" var="list">
<tr>
<td>${list.getCardId()}</td>
<td>${list.getCourseName()}</td>
<td>${list.getCourseTeacher()}</td>
<td>${list.getCourseID()}</td>
<td>${list.getCourseNature()}</td>
<td>${list.getCredit()}</td>
<td>${list.getCourseClass()}</td>
<td>${list.getCourseMajor()}</td>
<td>${list.getTestWay()}</td>
<td>${list.getTestData()}</td>
<td>${list.getTestCount()}</td>
<td>${list.getTestMethod()}</td>
<td>${list.getTestGrade()}</td>
<td>${list.getTestEvaluation()}</td>
<td>${list.getTestAnalysis()}</td>
<td>
<td>
</td>
<br></br>
</tr>
</c:forEach>
</center>
</body>
</html>
updatec.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Title</title>
</head>
<body>
<center>
<form action="ka" method="post">
试卷编号: <input type="text" name="num" value="${test.getCardId()}" readonly/><br/>
课程名称：<input type="text" name="kname" value="${test.getCourseName()}"/><br/>
任课教师：<input type="text" name="teachername" value="${test.getCourseTeacher()}"/><br/>
课程代码：<input type="text" name="kenum" value="${test.getCourseID()}"/><br/>
课程性质：<input type="text" name="xingzhi" value="${test.getCourseNature()}"/><br/>
学分：<input type="text" name="xuefen" value="${test.getCredit()}"/><br/>
授课班级：<input type="text" name="ban" value="${test.getCourseClass()}"/><br/>
授课专业：<input type="text" name="zhuanye" value="${test.getCourseMajor()}"/><br/>
考试方式：<input type="text" name="fangshi" value="${test.getTestWay()}"/><br/>
考试时间：<input type="text" name="time" value="${test.getTestData()}"/><br/>
考试人数：<input type="text" name="ren" value="${test.getTestCount()}"/><br/>
命题方式：<input type="text" name="mingti" value="${test.getTestMethod()}"/><br/>
成绩组成：<input type="text" name="zucheng" value="${test.getTestGrade()}"/><br/>
考核与评价方式：<input type="text" name="kf" value="${test.getTestEvaluation()}"/><br/>
考核内容合理性分析：<input type="text" name="fenxi" value="${test.getTestAnalysis()}"/><br/>
<input type="hidden" name="method" value="up"/>
<input type="submit" value="修改"/>
</form>
</center>
</body>
</html>
最后，查询的综合查询不够完善，浏览信息未达到要求。
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