package shujukulei;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class caozuoshujuku
{
//数据库URL和账号密码
public static final String connectionURL="jdbc:mysql://localhost:3306/sys?useUnicode=true&characterEncoding=GB18030&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true";
public static final String username="root";
public static final String password="123456";
//数据库连接
public static Connection getConnection()
{
try {
Class.forName("com.mysql.cj.jdbc.Driver");
//Class.forName("com.mysql.cj.jdbc.Driver");
return DriverManager.getConnection(connectionURL, username, password);
} catch (Exception e) {
// TODO: handle exception
System.out.println("数据库连接失败");
e.printStackTrace();
}
return null;
}
public static boolean getUsername(String username)
{
Connection connection=null;
PreparedStatement preparedStatement=null;
ResultSet rSet=null;
try {
connection=getConnection();
String sql="select * from new_table where name="+"\'"+username+"\'";
System.out.println(sql);
preparedStatement=connection.prepareStatement(sql);
rSet=preparedStatement.executeQuery();
if(rSet.next())
{
System.out.println(rSet.getString(1));
return true;
}
else
return false;
}
catch(SQLException e)
{
e.printStackTrace();
}
return false;
}
public static boolean Signin(String zhanghao,String mima,String sex,String name,String xuehao,String email,String xueyuan,String xi,String banji,String year,String place,String beizhu)//写表只改这个函数
{
Connection con=null;
PreparedStatement pstmt=null;
try {
con=getConnection();
String sql="insert into addstudent (zhanghao,mima,sex,name,xuehao,email,xueyuan,xi,banji,year,place,beizhu) values (\'"+zhanghao+"\',\'"+mima+"\',\'"+sex+"\',\'"+name+"\',\'"+xuehao+"\',\'"+email+"\',\'"+xueyuan+"\',\'"+xi+"\',\'"+banji+"\',\'"+year+"\',\'"+place+"\',\'"+beizhu+"\')";
System.out.println(sql);
pstmt=con.prepareStatement(sql);
pstmt.executeUpdate();
return true;
}
catch(SQLException e)
{
e.printStackTrace();
}
return false;
}
public static boolean addInformation(String username,String password,String sex,String name,String id,String email,String agency,String major,String classnum,String year,String birthplace,String text)
{
Connection con=null;
PreparedStatement pstmt=null;
try {
con=getConnection();
String sql="insert into addstudent (zhanghao,mima,sex,name,xuehao,email,xueyuan,xi,banji,year,place,beizhu) values (\'"+
username+"\',\'"+password+"\',\'"+sex+"\',\'"+name+"\',\'"+id+"\',\'"+email+"\',\'"+agency+"\',\'"+major+"\',\'"+classnum+"\',\'"+year+"\',\'"+birthplace+"\',\'"+text+"\')";
System.out.println(sql);
pstmt=con.prepareStatement(sql);
pstmt.executeUpdate();
return true;
}
catch(SQLException e)
{
e.printStackTrace();
}
return false;
}
public static void main(String[] args) {
addInformation("1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1", "1");
}
}
package shujukulei;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hjf.util.DBUtil;
/**
* Servlet implementation class sjk
*/
@WebServlet("/sjk")
public class sjk extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("UTF-8");
String username=request.getParameter("zhanghao");
String password=request.getParameter("mima");
String sex=request.getParameter("sex");
String name=request.getParameter("name");
String id=request.getParameter("xuehao");
String email=request.getParameter("email");
String agency=request.getParameter("xueyuan");
String major=request.getParameter("xi");
String classnum=request.getParameter("banji");
String year=request.getParameter("year");
String birthplace=request.getParameter("place");
String text=request.getParameter("beizhu");
if(caozuoshujuku.addInformation(username,password,sex,name,id,email,agency,major,classnum,year,birthplace,text))
response.sendRedirect("add.jsp?result=true");
else
response.sendRedirect("add.jsp?result=false");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style >
.a{
margin-top: 20px;
}
.b{
font-size: 20px;
width: 160px;
color: white;
background-color: greenyellow;
}
</style>
</head>
<body onload="getResult()">
<div align="center">
<h1 style="color: red;">当前位置：添加学生信息</h1>
<br>
<form action="sjk" method="post" >
<div class="a">
登录账号：<input type="text" id="zhanghao" name="zhanghao"/>
</div>
<div class="a">
登录密码：<input type="password" id="mima" datatype="*8-16" nullmsg="请输入8-16位密码！" name="mima" />
</div>
<div class="a">
性别：<select>
<option value="volvo">Volvo</option>
<option value="男">男</option>
<option value="女">女</option>
</select>
</div>
<div class="a">
姓名：<input type="text" id="name" name="name" />
</div>
<div class="a">
学号：<input type="text" id="xuehao" name="xuehao" />
</div>
<div class="a">
电子邮箱：<input type="text" id="email" name="email" />
</div>
<div class="a">
所在学院：<input type="text" id="xueyuan" name="xueyuan" />
</div>
<div class="a">
所在系：<input type="text" id="xi" name="xi" />
</div>
<div class="a">
所在班级：<input type="text" id="banji" name="banji" />
</div>
<div class="a">
入学年份：<select>
<option value="volvo">Volvo</option>
<option value="1998">1998</option>
<option value="1999">1999</option>
<option value="2000">2000</option>
<option value="2001">2001</option>
<option value="2002">2002</option>
<option value="2003">2003</option>
<option value="2004">2005</option>
<option value="2006">2007</option>
<option value="2008">2008</option>
</select>
</div>
<div class="a">
生源地：<input type="text" id="place" name="place" />
</div>
<div class="a">
备注：<input type="text" id="beizhu" name="beizhu" />
</div>
<div class="a">
<input type="submit" value="添加" onclick="return check()">
</div>
</form>
</div>
<script type="text/javascript">
function GetQueryString(name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
var r = window.location.search.substr(1).match(reg); //获取url中"?"符后的字符串并正则匹配
var context = "";
if (r != null)
context = r[2];
reg = null;
r = null;
return context == null || context == "" || context == "undefined" ? "" : context;
}
function getResult()
{
if(GetQueryString("result")=="true")
alert("添加成功！");
else if(GetQueryString("result")=="false")
alert("添加失败！");
}
function check() {
var username = document.getElementById("zhanghao");
var password = document.getElementById("mima");
var xh = document.getElementById("xuehao");
var email = document.getElementById("email");
var name = document.getElementById("name");
if (!username.value.match(/^[a-zA-Z]\w{5,11}$/)) {
alert("用户名由六到十二英文字符和数字组成，以英文字母开头");
username.focus();
return false;
}
else if (!password.value.match(/^[A-Za-z0-9]\w{7,20}$/)) {
alert(" 密码由八 位 以上英文 和数 字 组成");
password.focus();
return false;
}
else if(name.value!="杨一帆")
{
alert("姓名错误");
name.focus;
return false;
}
else if(xh.value<"20180000"|| xh.value>"20189999")
{
alert(" 学号由2018开头的八位组成");
xh.focus();
return false;
}
else if (!email.value.match(/^[a-z0-9]+([._\\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$/)) {
alert(" 邮箱格式错误");
email.focus();
return false;
}
}
</script>
</script>
</body>
</html>今天的测试，主要是是连接上数据库，然后设计网页，在做一个表格，最主要的是连接数据库，这个对我来说是比较困难的，我找学长帮助我，然后连接成功后，在百度上面查找题目上面的要求，花费了较长的时间，在课下还得巩固和复习，对数据库的连接熟习掌握。