KTV项目 SQL数据库的应用 结合C#应用窗体
五道口北大青鸟校区
KTV项目
指导老师:袁玉明
歌曲播放原理
SQL数据库关系图
C#解决方案类图
第一步:创建数据库连接方法和打开方法和关闭方法!
public class DBHelper
{
private string str = "server=.;database=MyKtv;uid=sa";
private SqlConnection _conection;
public SqlConnection Conection
{
get
{
if (_conection==null)
{
_conection = new SqlConnection(str);
}
return _conection;
}
}
/// <summary>
/// 打开方法
/// </summary>
public void OpenConnection()
{
if (Conection.State == ConnectionState.Closed)
{
Conection.Open();
} if (Conection.State == ConnectionState.Broken)
{
Conection.Close();
Conection.Open();
}
}
/// <summary>
/// 关闭方法`
/// </summary>
public void CloseConnection()
{
if (Conection.State == ConnectionState.Open && Conection.State == ConnectionState.Broken)
{
Conection.Close();
}
}
第二步:歌曲首页
歌曲首页:用到了窗体之间的转换和读取路径表中的图片路径放到filepath上
public partial class FormMain : Form
{
DBHelper db = new DBHelper();
public FormMain()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//读取路径表中的图片路径放到filepath上
string sql = "select resource_path from resource_path where resource_id=1";
SqlCommand cmd = new SqlCommand(sql,db.Conection);
db.OpenConnection();
KtvUtil.FilePath = cmd.ExecuteScalar().ToString();
db.CloseConnection();
}
private void pictureBox1_Click(object sender, EventArgs e)
{
//打开明星点歌窗体
FrmSinger frmSinger = new FrmSinger();
frmSinger.Show();
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
this.Close();
}
private void pictureBox4_Click(object sender, EventArgs e)
{
//打开拼音点歌窗体
FrmOrderBySongName fobsn = new FrmOrderBySongName();
fobsn.ShowDialog();
}
第三步:歌星点歌
歌星点歌:用到了3个ListView之间的跳转,
public partial class FrmSinger : Form
{
DBHelper db = new DBHelper();
public string SingerType = "组合";
;
public FrmSinger()
{
InitializeComponent();
}
private void panel1_Paint(object sender, PaintEventArgs e)
{
}
/// <summary>
/// 点击歌手类型后加载相应的信息
/// </summary>
public void ShowSingerDiQu()
{
]!=null)
{
lvtype.Visible = false;
lvSinger.Visible = true;
lvSinger.Location = lvtype.Location;
].Tag);
}
string sql = "select singertype_name,singertype_id from singer_type";
SqlCommand cmd = new SqlCommand(sql,db.Conection);
SqlDataReader sdr;
try
{
db.OpenConnection();
sdr = cmd.ExecuteReader();
lvtype.Items.Clear();
if (sdr.HasRows)
{
;
while (sdr.Read())
{
ListViewItem lvitem = new ListViewItem();
string typename = Convert.ToString(sdr["singertype_name"]);
int typeid = Convert.ToInt32(sdr["singertype_id"]);
lvitem.Text = typename;
lvitem.Tag = typeid;
lvitem.ImageIndex = result;
lvSinger.Items.Add(lvitem);
result++;
}
sdr.Close();
}
}
catch (Exception ex)
{
MessageBox.Show("第二个系统报错" + ex.Message);
}
finally
{
db.CloseConnection();
}
}
private void listView2_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void FrmOrderBySinger_Load(object sender, EventArgs e)
{
this.lvSinger.Visible = false;
this.lvContry.Visible=false;
}
private void listView1_Click(object sender, EventArgs e)
{
ShowSingerDiQu();
}
/// <summary>
/// 读取对应地区的歌手名称
/// </summary>
public void ShowSingerName()
{
]!=null)
{
lvSinger.Visible = false;
lvContry.Visible = true;
lvContry.Location = lvtype.Location;
SingerId = Convert.ToInt32(lvSinger.SelectedItems[].Tag);
StringBuilder sb = new StringBuilder();
string sum = SingerType;
if (sum!="组合")
{
sum = SingerType == "女歌手" ? "男" : "女";
}
string sql = string.Format("select singer_name,singer_photo_url,singer_id from singer_info where singertype_id='{0}' and singer_sex='{1}'", SingerId,sum);
SqlCommand cmd = new SqlCommand(sql, db.Conection);
try
{
db.OpenConnection();
SqlDataReader read = cmd.ExecuteReader();
if (read.HasRows)
{
//歌手头像索引
;
//清空图片集合
imageName.Images.Clear();
//清空listview列表集合
lvContry.Items.Clear();
if (read.HasRows)
{
while (read.Read())
{
//图片的地址
string path = KtvUtil.FilePath + @"" + Convert.ToString(read["singer_photo_url"]);
imageName.Images.Add(Image.FromFile(path));
ListViewItem lvitem = new ListViewItem();
string typename = Convert.ToString(read["singer_name"]);
int typeid = Convert.ToInt32(read["singer_id"]);
lvitem.Text = typename;
lvitem.Tag = typeid;
lvitem.ImageIndex = imageindex;
lvContry.Items.Add(lvitem);
imageindex++;
}
read.Close();
}
}
}
catch (Exception ex)
{
MessageBox.Show("第三个系统报错!" + ex.Message);
}
finally
{
db.CloseConnection();
}
}
}
private void lvName_Click(object sender, EventArgs e)
{
ShowList();
}
private void listView2_Click(object sender, EventArgs e)
{
ShowSingerName();
}
private void listView1_ChangeUICues(object sender, UICuesEventArgs e)
{
}
/// <summary>
/// 打开第三层ListView
/// </summary>
public void ShowList()
{
//定义一个StringBuilder对象
StringBuilder sb = new StringBuilder();
//sql语句
].Text,Convert.ToInt32(lvContry.SelectedItems[].Tag));
//定义歌曲列表窗体的对象
FrmSongList sl=new FrmSongList();
//把sql语句传到第三个窗体上
sl.Sql=sql;
sl.ShowDialog();
this.Close();
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
if (lvSinger.Visible)
{
lvSinger.Visible = false;
lvContry.Visible = true;
}
else if (lvContry.Visible)
{
lvContry.Visible = false;
lvtype.Visible = true;
}
else if (lvtype.Visible)
{
FormMain dd = new FormMain();
dd.Show();
this.Close();
}
}
第四步:歌曲列表
歌曲列表:实现点击一下歌曲列表中的一行信息就到以点里面
public partial class FrmSongList : Form
{
DBHelper db = new DBHelper();
DataSet ds = new DataSet();
private string sql = "";
//歌曲的查询语句
public string Sql
{
get { return sql; }
set { sql = value; }
}
public FrmSongList()
{
InitializeComponent();
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
//第一步判断datagridView有没有选中的行
//第二步从实例化SongList类
//第三步调取歌曲song类的字段进行赋值(从datagridview中的列赋值);
//第四部把从datagridview中获取到的数据添加到播放类里的数组中
]!=null)
{
SongList song = new SongList();
song.SongName1 = ].Cells[].Value.ToString();
song.SongUl1 = ].Cells[].Value.ToString();
PalyList.AddSong(song);
}
}
private void FrmSongList_Load(object sender, EventArgs e)
{
SqlDataAdapter sda = new SqlDataAdapter(sql,db.Conection);
sda.Fill(ds,"songinfo");
dataGridView1.DataSource = ds.Tables["songinfo"];
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton6_Click(object sender, EventArgs e)
{
FrmSong frm = new FrmSong();
frm.ShowDialog();
}
第五步:已点歌曲
已点歌曲:进入了就是已播放状态一次往下添加都是未播放,如果到了下面的播放状态就还得改变成已播放
private void FrmOrderedSongList_Load(object sender, EventArgs e)
{
//遍历播放类里面的数组
foreach (SongList item in PalyList.song)
{
if (item!=null)
{
ListViewItem lvitem = new ListViewItem(item.SongName1);
string type = item.PlaySong == PalySongState.unplayed ? "未播放" : "已播放";
lvitem.SubItems.Add(type);
this.listView1.Items.Add(lvitem);
}
}
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
FrmSinger dd = new FrmSinger();
dd.Show();
}
第六步:拼音点歌
public partial class FrmSpeall : Form
{
private DBOpetion db = new DBOpetion();
private SqlDataAdapter adapter = null;
private DataSet ds = new DataSet();
public FrmSpeall()
{
InitializeComponent();
}
[DllImportAttribute("user32.dll")]
private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);
private void FrmSpeall_Load(object sender, EventArgs e)
{
AnimateWindow(, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE);
//动态效果可以取消注释
//for (int i = 97; i < 123; i++)
//{
// for (int j = 0; j < 4; j++)
// {
// Label label = new Label();
// label.BackColor = Color.Yellow;
// label.Font=new System.Drawing.Font("宋体",14.25F,System.Drawing.FontStyle.Regular,
// System.Drawing.GraphicsUnit.Point,((byte)(134)));
// label.AutoSize = false;
// label.Size = new System.Drawing.Size(50, 25);
// label.Text = ((char)i).ToString();
// label.TextAlign = ContentAlignment.MiddleCenter;
// label.Location = new Point(60 + (i * 90), 60 + (j * 60));
// label.Parent = panel1;
// }
//}
////for (int i = 97; i < 123; i++)
////{
//// Console.WriteLine((char)i);
////}
}
private void pictureBox1_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "a";
}
private void pictureBox2_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "b";
}
private void pictureBox3_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "c";
}
private void pictureBox4_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "d";
}
private void pictureBox5_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "e";
}
private void pictureBox6_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "f";
}
private void pictureBox7_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "g";
}
private void pictureBox8_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "h";
}
private void pictureBox9_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "i";
}
private void pictureBox10_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "j";
}
private void pictureBox11_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "k";
}
private void pictureBox12_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "l";
}
private void pictureBox13_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "m";
}
private void pictureBox14_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "n";
}
private void pictureBox15_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "o";
}
private void pictureBox16_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "p";
}
private void pictureBox17_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "q";
}
private void pictureBox18_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "r";
}
private void pictureBox19_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "s";
}
private void pictureBox20_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "t";
}
private void pictureBox21_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "u";
}
private void pictureBox22_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "v";
}
private void pictureBox23_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "w";
}
private void pictureBox24_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "x";
}
private void pictureBox25_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "y";
}
private void pictureBox26_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "z";
}
private void button1_Click(object sender, EventArgs e)
{
string text = this.textBox1.Text;
;
)
{
textBox1.Text = text.Remove(index);
}
}
/// <summary>
/// 按拼音查找歌曲
/// </summary>
private void SeleSong()
{
string sql =string.Format("select song_id,song_name,song_url,singer_name from song_info,singer_info" +
" where song_info.singer_id=singer_info.singer_id and song_ab like '%{0}%'",this.textBox1.Text);
adapter = new SqlDataAdapter(sql, db.Conntion);
if (ds.Tables["song_info"]!=null)
{
ds.Tables.Clear();
}
adapter.Fill(ds, "song_info");
this.dataGridView1.DataSource = ds.Tables["song_info"];
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (this.textBox1.Text !=string.Empty)
{
SeleSong();
this.dataGridView1.AutoGenerateColumns = false;
}
else
{
this.dataGridView1.DataSource = null;
}
}
private void FrmSpeall_FormClosing(object sender, FormClosingEventArgs e)
{
AnimateWindow(, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE);
}
private void dataGridView1_DoubleClick(object sender, EventArgs e)
{
] != null)
{
Song song = new Song();
song.SongName = ].Cells[].Value.ToString();
song.SongPath = ].Cells[].Value.ToString();
ListSong.AddSong(song);
MessageBox.Show("添加成功,请在已点歌曲中查看!!!");
this.Close();
}
}
第七部：金榜排行
DataSet sb = new DataSet();
SqlDataAdapter adapter = new SqlDataAdapter();
public FrmOrderWordText()
{
InitializeComponent();
}
private void FrmOrderWordText_Load(object sender, EventArgs e)
{
DBHelper dd = new DBHelper();
string sql = string.Format("select song_name,singer_name,song_play_count from song_info,singer_info where song_info.singer_id=singer_info.singer_id order by song_play_count desc");
adapter.SelectCommand = new SqlCommand(sql, dd.Conection);
adapter.Fill(sb, "song_info");
DataTable table = sb.Tables["song_info"];
foreach (DataRow row in table.Rows)
{
ListViewItem list = ].ToString());
].ToString(),row[].ToString()};
list.SubItems.AddRange(item);
listView1.Items.Add(list);
}
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton5_Click(object sender, EventArgs e)
{
FrmSong song = new FrmSong();
song.Show();
}
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
PalyList.CutSong(-);
}
}
private void toolStripButton7_Click(object sender, EventArgs e)
{
//PalyList.PlayAgain();
FormMain dd = new FormMain();
dd.palySong();
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.Show();
this.Close();
}
第八步：字数点歌
DBHelper db = new DBHelper();
SqlDataAdapter sda = new SqlDataAdapter();
DataSet ds = new DataSet();
public FrmOrderByWordCount()
{
InitializeComponent();
}
/// <summary>
/// 打开主界面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton2_Click(object sender, EventArgs e)
{
FormMain f = new FormMain();
f.Show();
}
/// <summary>
/// 重唱歌曲
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton7_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.palySong();
//PalyList.PlayAgain();
}
/// <summary>
/// 切歌
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
PalyList.CutSong(-);
}
}
/// <summary>
/// 已点歌曲
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton5_Click(object sender, EventArgs e)
{
FrmSong frmList = new FrmSong();
frmList.Show();
}
/// <summary>
/// 返回
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton1_Click(object sender, EventArgs e)
{
this.Close();
}
public void FrmOrderByWordCount_Load(object sender, EventArgs e)
{
string sql2 = "select resource_path from resource_path where resource_id=2";
SqlCommand cmd2 = new SqlCommand(sql2, db.Conection);
db.OpenConnection();
KtvUtil.SongPath = cmd2.ExecuteScalar().ToString();
db.CloseConnection();
; i <= ; i++)
{
; j<= ; j++)
{
Label label = new Label();
label.Text = "" + i + "";
)
{
label.Text = ) + "";
}
)
{
label.Text = ) + "";
}
label.Size = , );
label.TextAlign = ContentAlignment.MiddleCenter;
label.Font = );
label.BackColor = Color.Pink;
label.Click += label_Click;
label.Location = + * j, + * i);
this.Controls.Add(label);
}
}
}
void label_Click(object sender, EventArgs e)
{
DBHelper dd = new DBHelper();
DataSet ds = new DataSet();
Label label = (Label)sender;
string sql = string.Format("select song_name,song_url,singer_name from song_info,singer_info" +
" where song_info.singer_id=singer_info.singer_id and song_word_count={0}", Convert.ToInt32(label.Text));
SqlDataAdapter da = new SqlDataAdapter(sql, dd.Conection);
da.Fill(ds, "song_info");
dataGridView1.DataSource = ds.Tables["song_info"];
this.dataGridView1.Visible = true;
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
].Cells["clnSongName"].Value.ToString();
DBHelper db = new DBHelper();
db.OpenConnection();
string sql = string.Format("SELECT song_name,singer_name,song_url,song_photo_url FROM dbo.song_info,dbo.singer_info where dbo.singer_info.singer_id=dbo.song_info.singer_id and song_name='{0}'", songname);
SqlCommand cmd = new SqlCommand(sql, db.Conection);
SqlDataReader read = cmd.ExecuteReader();
if (read.Read())
{
SongList song = new SongList();
song.SongName1 = read["song_name"].ToString();
song.SongUl1 = read["song_url"].ToString();
PalyList.AddSong(song);
}
read.Close();
}
}
第九步：类型点歌
/// <summary>
/// 切歌方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
PalyList.CutSong(-);
}
}
private void FrmOrderBySongType_Load(object sender, EventArgs e)
{
LoadListView();
}
private void LoadListView()
{
DBHelper db = new DBHelper();
string sql = "select songtype_id,songtype_name,songtype_URL from song_type";
SqlCommand cmd = new SqlCommand(sql, db.Conection);
try
{
db.OpenConnection();
SqlDataReader reader = cmd.ExecuteReader();
if (reader.HasRows)
{
;
while (reader.Read())
{
ListViewItem item = new ListViewItem();
item.Text = reader[].ToString();
item.Tag = reader[].ToString();
].ToString()));
item.ImageIndex = index;
this.listView1.Items.Add(item);
index++;
}
}
reader.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
db.CloseConnection();
}
}
/// <summary>
/// 查找到该类型的歌手的歌曲
/// </summary>
private void DoubleClickSong()
{
] != null)
{
string sql = string.Format("select song_id,song_name,song_url,singer_name from song_info,singer_info" +
].Tag));
FrmSongList fs = new FrmSongList();
fs.Sql = sql;
fs.Show();
}
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton5_Click(object sender, EventArgs e)
{
FrmSong song = new FrmSong();
song.Show();
}
private void listView1_Click(object sender, EventArgs e)
{
listView1.ToString();
}
private void listView1_DoubleClick(object sender, EventArgs e)
{
DoubleClickSong();
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.Show();
this.Close();
}
private void toolStripButton7_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.palySong();
}
待续…………………………
KTV项目 SQL数据库的应用 结合C#应用窗体的更多相关文章
- C# 动态创建SQL数据库（二） 在.net core web项目中生成二维码 后台Post/Get 请求接口 方式 WebForm 页面ajax 请求后台页面 方法 实现输入框小数多 自动进位展示，编辑时实际值不变 快速掌握Gif动态图实现代码 C#处理和对接HTTP接口请求
C# 动态创建SQL数据库(二) 使用Entity Framework 创建数据库与表 前面文章有说到使用SQL语句动态创建数据库与数据表,这次直接使用Entriy Framwork 的ORM对象关 ...
- C# KTV 系统 SQL数据库连接 C# 应用窗体
---恢复内容开始--- 五道口 北大青鸟校区 KTV项目 指导老师: 袁玉明 SQL数据库关系图 第一步: private void DoubleClicklvContry() { ]!=null ...
- jquery autocomplete实现读取sql数据库自动补全TextBox
转自我本良人 原文 jquery autocomplete实现读取sql数据库自动补全TextBox 项目需要这样子一个功能,其他部门提的意见,只好去实现了哦,搞了好久才弄出来,分享一下. 1.前台页 ...
- matlab连接sql数据库
最近项目还涉及到matlab连接数据库,下面我就记录如何进行配置使得matlab能够连接sql数据库.由于最近工程做的多一些,所以分享的都在工程配置上,当初为了这些配置可是反复卸载与重装,算法其实也有 ...
- KTV项目总结
KTV项目总结 大约一个星期前吧,老湿说我们要开始做KTV项目了,说是KTV项目是贯穿整个学的内容的,会所的,要我们认真去对待,一开始,第一天搭前台界面,总是有不会的,要去问问,这个要用什么控件啊,用 ...
- 收缩SQL数据库日志文件
收缩SQL数据库日志文件 介绍具体的操作方法前,先说下我操作的实际环境和当时的状况.我的服务器是windows server 2008 R2 64位英文版,数据库是SQL server 2008英文版 ...
- 【MongoDB】MongoDB VS SQL数据库
MongoDB和SQL数据库都能满足数据库的基本功能:1.有组织的存放数据:2.按照需求查询数据 传统的SQL数据库(e.g.Oracle, MySQL) 对表的运用不够灵活,横向扩展不太容易,而它的 ...
- 聚焦 SQL 数据库活动异地复制
Tobias Ternstrom US-DS-PM 首席部门项目经理 本文作为一系列业务连续性和灾难恢复文章的开篇,概述了业务连续性的各种场景,然后重点介绍 SQL 数据库高级服务级别提供的活动异地 ...
- Azure SQL 数据库：新服务级别问答
ShawnBice 2014 年 5 月 1 日上午 11:10 本月初,我们庆祝了SQL Server 2014 的推出,并宣布正式发布分析平台系统,同时分享了智能系统服务预览版.Quentin ...
随机推荐
- 双主MySQL+keepalived高可用配置
部署双节点双主数据库服务器mysql 分别在二台服务器上安装mysql,要求同版本或主服务器比从服务器版本高. 主机mysql配置: Vi /etc/my.cnf [mysqld] Log-bin=m ...
- Bug总结流程
小明入职已有两年,期间测试能力已不知不觉成长许多,得到了Leader大熊的高度认可.回首这两年间,小明对"Bug总结流程"印象最为深刻,他对这个流程的认识在不断改变着:从最初的好奇 ...
- 当执行太多不受信任的代码时，除去令人讨厌的大量 trycatch 的办法
如果方法 Condition 返回 true,则执行 IfTrue,否则执行 IfFalse,发生异常则执行 IfError. 通常是这样: try { if (Condition()) { try ...
- table中的td内容超出隐藏
<table style="table-layout: fixed;width: XXX px"> <tr> <td style="whit ...
- sphinx索引分析——文件格式和字典是double array trie 检索树，索引存储 – 多路归并排序，文档id压缩 – Variable Byte Coding
1 概述 这是基于开源的sphinx全文检索引擎的架构代码分析,本篇主要描述index索引服务的分析.当前分析的版本 sphinx-2.0.4 2 index 功能 3 文件表 4 索引文件结构 4. ...
- 关于BigDecimal 的计算
BigDecimal 构造方式主要包括4种: 支持double.int.long等类型计算,废话少说,直接上代码 import java.math.BigDecimal; public class B ...
- Gulp的使用教程
- Kettle6.0安装及问题总结-白痴教程
1.安装JDK 配置java环境变量 2.安装KETTLE: 官方下载地址:http://community.pentaho.com/projects/data-integration/ 下载完后,解 ...
- iOS中 HTTP/Socket/TCP/IP通信协议详解
// OSI(开放式系统互联), 由ISO(国际化标准组织)制定 // 1. 应用层 // 2. 表示层 // 3. 会话层 // 4. 传输层 // 5. 网络层 // 6. 数据链接层 // 7. ...
- repcache实现memcached主从
1.repcached介绍 repcached是日本人开发的实现memcached复制功能,它是一个单 master单 slave的方案,但它的 master/slave都是可读写的,而且可以相互同步 ...