《2017黑龙江选调生报名网站:龙江先锋网【5篇】》
使用SQL语句实现用户登录 篇1
使用SQL语句实现用户登录
5、在DA.cs类文件中添加如下代码
///
/// 验证顾客登陆
///
///
查询语句
/// 指定顾客数据集
public DataSet CustomerLogin(string SqlStr)
{
SqlCommand comm = new SqlCommand(SqlStr, conn);
SqlDataAdapter adapter = new SqlDataAdapter(comm);
DataSet DBSet = new DataSet();
conn.Open();
adapter.Fill(DBSet);
comm.Dispose();
conn.Close();
return DBSet;
}
6、将用户登录功能代码改为:
string Customername = ;
string Customerpwd =
System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile, “MD5”);
string Sqlstring = “select * from test where uname='” + Customername + “'and upwd='” + Customerpwd + “'”;
DA mydata=new DA() ;
DataSet ds = mydata.CustomerLogin(Sqlstring);
if (ds.Tables[0] == 0)
{
Response.Write(“”);
}
else
{
//Response.Write(“”);string scriptString =(“登录成功!”);
Response.Write(scriptString);
}
PHP数据库(用户登录 篇2
留言发布
定义数据库
<?php
$conn = @mysql_connect(“localhost”, “root”, “") or die(”数据库链接错误“);//利用mysql_connect()开启数据库链接,@用于隐藏错误
mysql_select_db(”bbs“, $conn);//使用mysql_select_db(” “,__)打开数据库,”“里面是数据库,__是链接标识符
mysql_query(”set names 'GBK'“); //mysql_query()对数据库的表进行操作;使用GBK中文编码;
function htmtocode($content){
$content = str_replace(”n“,”
“,str_replace(” “, ” “, $content));return $content;
}//function函数作用:在写字板上显示的内容会有空格和回车的效果,使用str_replacestr_replace替换函数
?>
用户输入:
<?php
include(”conn.php“);//把数据库链接
if(isset($_POST['submit']))//用isset()可以省略出现的notice提示;利用$_POST方法接收传递过来的参数,判断接收的是不是submit
{
$sql=”insert into message (id, user, title, content, lastdate)“。”values('','$_POST[user]','$_POST[title]','$_POST[content]',now())“;//把输入的数据存放到数据库的表(message)中并在数据库显示
mysql_query($sql);//对数据库中的表进行操作
echo
”“;//输出一个js脚本,弹出“添加成功”,然后回退
}
?>
//action是转向地址,即form表单需要提交到哪里;onsubmit:提交事件用户:
标题:
内容:
列表显示+分页显示:(如果表message中没有数据,编译后不会显示任何内容)
<?php
include ”conn.php“;
//每页的条数 $pageSize = 3; //每页的第一条 $pageStart = 0; //上一页 $upPage = 0; //当前页 $nowPage = 0; //下一页 $downPage = 0;
//共多少条 $total = mysql_num_rows(mysql_query(”SELECT * FROM message“)); //共多少页:页数=总条数/每页的条数 ,ceil用于取整 $pageCount = ceil($total/$pageSize); if($pageCount<1) {//当没有信息时,pageCount=0(即<1),则上下页都等于1$upPage = 1;$downPage = 1; } else {$upPage = 1;$downPage = 2; } if (isset($_GET['page'])) {} $nowPage = $_GET['page'];//取得当前页 $pageStart = ($nowPage1;$downPage = $nowPage + 1; } //从第pageStart+1条开始取,取pagesize条信息用于显示 $query = mysql_query(”select * from message limit $pageStart,$pageSize“);
while($row=mysql_fetch_array($query))//获取数据信息
{
echo
”“ 。
”“。
”$row[0]“ 。
”$row[1]“ 。
”$row[2]“ 。
”“。
”“;
}
echo ”上一页“ 。” “ 。”下一页“;
?>
用户登录 login.php
<?php
include(”conn.php“);
if(isset($_GET['out'])){//如果退出登录,写入cookie,记录已退出状态setcookie(”cookie“,”out“);//设置cookie变量的名称为cookie,cookie的值为outecho”“;//当用户没退出时,一直显示login.php的页面
}
if(isset($_POST['id']) == 'admin'){//当用户以admin登录时可以进入$pw=md5($_POST['pw']);if($pw=='21232f297a57a5a743894a0e4a801fc3') {
setcookie(”cookie“,”ok“);//设置cookie的名称为cookie,cookie的值为okecho ”“;
}
}
if(isset($_COOKIE['cookie']) != 'ok'){//当cookie的值为ok时,执行一下语句 ?>
ID:
PW:
<?
}else{
?>
退出<?
}
?>
龙江人社APP电子社保卡扫码登录操作流程 篇3
龙江人社APP电子社保卡扫码登录操作流程
一、手机应用程序下载
①网上服务大厅主页面,龙江人社APP下载二维码
②手机应用商店或腾讯应用宝可搜索下载
二、个人新用户注册
网上服务大厅个人用户注册与龙江人社APP手机端用户注册的账号为同一个,网页端或手机端注册方式任选其一即可。
l
新用户注册步骤(网页端)
1、注册用户类别选择个人用户;
2、填写个人真实姓名及身份证号,进行数据校验;
3、填写注册信息,用户名可默认为个人身份证号,手机号需省内常用号段;
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新用户注册步骤(手机APP端)
1、进入新用户注册界面,填写个人真实姓名和身份证号,进行刷脸身份验证;
2、刷脸验证通过填写注册信息时,手机号可填写省内或省外号段,也可非本人名下手机号;
3、刷脸验证不通过,需要填写省内手机号并且需要获取验证码;
4、信息填写完毕后,点击注册即可。
刷脸成功注册页面
刷脸失败注册页面
三、个人用户登录(安卓版)
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方式一:人脸识别认证登录
1、输入本人姓名和身份证号,点击【人脸识别认证登录】按钮;
2、进入刷脸认证界面,点击【采集本人人脸】按钮;
3、按照提示拿起手机,眨眼动作完成人脸认证,认证成功后自动登录系统。
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方式二:用户密码验证登录
点击【用户密码验证登录】按钮,输入用户名和密码
点击【登录】按钮后自动登录系统。
四、个人电子社保卡扫码登录网上服务大厅
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操作步骤:
1、首次使用APP扫码登录功能,需要先申领个人电子社保卡。
我的-电子社保卡中-领取电子社保卡
2、打开网上服务大厅登录主页面,点击“电子社保卡”,打开登录二维码。
3、打开人社APP的电子社保卡中的“扫一扫”功能,根据实际情况选择个人登录或单位登录,扫码后确认授权登录,完成网上服务大厅系统登录。
1、龙江先锋网社区网站用户登录 篇4
登陆后台管理
1、打开IE浏览器
2、输入“龙江先锋网”网址
3、点击“万村网”进入如下界面
4、点击“登录”
7、点击“后台管理”即可进行网站建设及内容发布
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VB用户登录管理系统 篇5
软件开发环境与工具
实验二
实验题目:用户登录及管理系统 实验地点:软件实验室一 指导老师:王琦 实验类型:设计型
系 班:计算机科学与技术系1103班 姓 名:秦芳芳(2011100316)
2013年11月22日
一.实验项目名称:用户登录及管理系统 二。 实验目的和任务:
1、掌握系统登录界面设计基本流程
2、了解用户管理所要实现的基本功能
3、要求利用三层架构思想机相关技术实现程序
三。 实验内容及要求:
1、能够进行登录验证
2、能够实现对用户的基本管理,管理员能够进行查询添加修改删除
3、利用数据库连接访问数据库,提高安全性
四.实验步骤:
1、class1.vb的代码:
Imports System.Data.SqlClient Public Class Class1
Dim strconn As String = () Public Function yanzheng(ByVal str1 As String) As Integer
Dim conn As New SqlConnection = strconn conn.Open() Dim cmd As New SqlCommand
= “select * from student where sname ='” & str1 & “'” = conn ' =
Dim dr As SqlDataReader dr = cmd.ExecuteReader If Then dr.Close() conn.Close() Return 1 Else
dr.Close() conn.Close() Return 0 End If
End Function
Public Function pwdyanzheng(ByVal str As String) As SqlDataReader
Dim conn As New SqlConnection = strconn conn.Open()
Dim cmd As New SqlCommand
= “select * from student where sname = '” & str & “'” = conn Dim dr As SqlDataReader = cmd.ExecuteReader Return dr End Function
Public Function getstrconn() As String
Dim str As String str = “server=” & (“server”) & “;” str &= “uid=” & (“uid”) & “;” str &= “pwd=” & (“pwd”) & “;” str &= “database=” & (“database”) Return str End Function
Public Function getalldata() As DataSet
Dim conn As New SqlConnection = strconn conn.Open() Dim da As New SqlDataAdapter(“select * from student”, conn) Dim ds As New DataSet da.Fill(ds, “student”) conn.Close() Return ds End Function
Public Function insdata(ByVal str1 As String, ByVal str2 As String) As String
Dim conn As New SqlConnection = strconn Dim cmd As New SqlCommand = conn = “insert into student(sname,sno) values('” & str1 & “','” & str2 & “') ”
Try
conn.Open() cmd.ExecuteNonQuery() Return “1”
Catch ex As Exception
Return “-1” & End Try
conn.Close()
End Function
Public Function upd(ByVal str1 As String, ByVal str2 As String) As String
Dim conn As New SqlConnection = strconn Dim cmd As New SqlCommand = conn = “update student set sno ='” & str2 & “'where sname ='” & str1 & “'”
Try
conn.Open() cmd.ExecuteNonQuery() Return “1”
Catch ex As Exception
Return “-1” & End Try
conn.Close() End Function
Public Function deldata(ByVal str As String) As String
Dim conn As New SqlConnection = strconn Dim cmd As New SqlCommand = conn = “delete from student where sname ='” & str & “'”
Try
conn.Open() cmd.ExecuteNonQuery() Return “1”
Catch ex As Exception
Return “-1” & End Try
conn.Close() End Function
Public Function search(ByVal str1 As String) As String
Dim conn As New SqlConn m.jingyou.net ection = strconn Dim cmd As New SqlCommand = conn = “select * from student”
Try
conn.Open() cmd.ExecuteNonQuery() Return “1”
Catch ex As Exception
Return “-1” & End Try
conn.Close() End Function
End Class
2、进入界面功能的代码:
Imports System.Data.SqlClient Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim o As New Class
1Dim f As Integer
f = o.yanzheng If f = 0 Then
MsgBox(“不存在该用户,请重新输入!”) = “"
() Else
If f = 1 Then
Dim dr As SqlDataReader
dr = o.pwdyanzheng () If RTrim(dr!sno)<>Then MsgBox(”密码错误,请重新输入!“) = ”“
() Else
Dim strpwd As String
strpwd = strpwd = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strpwd, ”md5“) Dim frm As New Form2
frm.loginname = frm.logintime = TimeOfDay frm.Show() Me.Hide() End If
End If
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click MyBase.Dispose()
End Sub End Class
3、用户管理和浏览信息界面的代码: Public Class Form2
Public loginname As String
Public logintime As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Hide() Form3.Show() End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Me.Hide() Form4.Show() End Sub
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load = ”用户名:“ & loginname = ”登录时间:“ & logintime End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick = Now End Sub End Class
4、增,删,改,查功能页面的代码: Public Class Form3
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Me.Hide() del.Show() End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Hide() ins.Show() End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Me.Hide() upda.Show() End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button4.Click Me.Close() search.Show() End Sub End Class
5、显示信息界面的代码: Public Class Form4
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Close() Form2.Show() End Sub
Private Sub Form4_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim o As New Class
1Dim ds As New DataSet ds = o.getalldata() () Me.DataGridView1.DataSource = ds.Tables(”student“) End Sub End Class
6、插入信息界面的代码: Public Class ins
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim o As New Class1
o.insdata, Me.Close() Form2.Show() End Sub End Class
7、查询信息界面的代码: Public Class search
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click Dim o As New Class
1Dim ds As New DataSet
o.search ds = o.getalldata() () Me.DataGridView1.DataSource = ds.Tables(”student") End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
Me.Close() Form2.Show() End Sub
Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles = DataGridView1(0) = DataGridView1(1) = DataGridView1(2) = DataGridView1(3) = DataGridView1(4) End Sub End Class
8、修改信息界面的代码: Public Class upda
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim o As New Class1
o.upd, Me.Close() Form2.Show() End Sub End Class
9、删除信息界面的代码: Public Class del
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click Dim o As New Class1
'o.deldata o.deldata Me.Close() Form2.Show() End Sub
End Class
五、运行结果及截图:
(1)建立数据库
(2)运行截图
六、实验总结:
通过本次实验,我大致掌握了一个登录系统界面设计的基本流程,同时了解了用户管理所要实现的基本功能,而且能够利用三层架构思想机相关技术实现程序,能够进行登录验证,实现了对用户的基本管理,在系统中实现了增删查改的功能,利用数据库连接访问数据库,提高了安全性,为以后的学习打下了很好的基础。