课题：
编写教师开设课程的网页
代码：
package pers.sun.DataBase;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class Data {
public static Connection getConnection() {
//加载驱动
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
String root="root";
String password="sunyu";
String url="jdbc:mysql://localhost:3306/user_message";
//链接对象
Connection con=null;
try {
con=DriverManager.getConnection(url,root,password);
} catch (SQLException e) {
e.printStackTrace();
}
return con;
}
//关闭资源
public static void close(Connection con) {
try {
if(con!=null)
con.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
public static void close(PreparedStatement pre) {
try {
if(pre!=null)
pre.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
public static void close(ResultSet result) {
try {
if(result!=null)
result.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
package pers.sun.user;
public class Teacher {
private String classname;
private String tename;
private String teplace;
public String getClassname() {
return classname;
}
public void setClassname(String classname) {
this.classname = classname;
}
public String getTename() {
return tename;
}
public void setTename(String tename) {
this.tename = tename;
}
public String getTeplace() {
return teplace;
}
public void setTeplace(String teplace) {
this.teplace = teplace;
}
}
package pers.sun.user;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import pers.sun.DataBase.Data;
public class UserTool {
//1添加用户
public static void add(User tuser) {
//获得链接对象
Connection con=Data.getConnection();
//插入
String sql="insert into user_infor(username,password) value(?,?)";
//语句传输对象
PreparedStatement pre=null;
try {
pre=con.prepareStatement(sql);
//写进表
pre.setString(1, tuser.getUsername());
pre.setString(2, tuser.getPassword());
//????刷新？？？
pre.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}finally {
Data.close(pre);
Data.close(con);
}
}
public static void add(Teacher teacher) {
//获得链接对象
Connection con=Data.getConnection();
//插入
String sql="insert into teacher_infor(classname,teachername,teachplace) value(?,?,?)";
//语句传输对象
PreparedStatement pre=null;
try {
pre=con.prepareStatement(sql);
//写进表
pre.setString(1, teacher.getClassname());
pre.setString(2, teacher.getTename());
pre.setString(3, teacher.getTeplace());
//????刷新？？？
pre.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}finally {
Data.close(pre);
Data.close(con);
}
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="pers.sun.user.*" %>
<%@ page import="pers.sun.judge.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
String classnamex=request.getParameter("classname");
String tenamex=request.getParameter("tename");
String placex=request.getParameter("place");
boolean valuex=ValueData.valueNull(request, new String[]{"classname","tename","place"});
if(!valuex)
{
%>
<jsp:forward page="loginshow.jsp"></jsp:forward>
<%
}
Teacher tea=new Teacher();
tea.setClassname(classnamex);
tea.setTename(tenamex);
tea.setTeplace(placex);
UserTool.add(tea);
%>
<jsp:forward page="xinxi.jsp"></jsp:forward>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="pers.sun.judge.*" %>
<%@ page import="java.util.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户登陆</title>
</head>
<body>
<form action="loginhandl.jsp" method="post">
<table align="center" border="1" width="500">
<tr>
<td>课程名称</td>
<td><input type="text" name="classname">
<%=ValueData.showError(request,"classname") %>
</td>
</tr>
<tr>
<td>任课教师</td>
<td><input type="text" name="tename">
<%=ValueData.showError(request,"tename") %>
</td>
</tr>
<tr>
<td>上课地点</td>
<td><input type="text" name="place">
<%=ValueData.showError(request,"place") %>
</td>
</tr>
<tr align="center">
<td colspan="2">
<input type="submit" value="保存">
<input type="reset" value="重置">
</td>
</tr>
</table>
</form>
</body>
</html>
<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1 align="center">添加成功！</h1>
</body>
</html>