根据Excel配置表单自动生成mysql创建表sql语句
开发了一个小工具，根据Excel表单来自动生成创建mysql的语句
一、新建Windows窗体应用程序AutoGenerateTool。添加对NPOI.dll的引用
使用NPOI来操作Excel.（NPOI在没有安装Excel的电脑上也可读、写Excel）。示例Excel如下：
二、NopiExcelOpretaUtil.cs用于一个Excel文件转化为DataTable，源代码如下：
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HansCommon.Excel
{
public static class NopiExcelOpretaUtil
{
#region Excel操作
///
/// Excel导入成Datable
///
///
///
public static DataTable ExcelToTable(string file)
{
DataTable dt = new DataTable();
IWorkbook workbook;
string fileExt = Path.GetExtension(file).ToLower();
using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read))
{
//XSSFWorkbook 适用XLSX格式，HSSFWorkbook 适用XLS格式
if (fileExt == ".xlsx") { workbook = new XSSFWorkbook(fs); } else if (fileExt == ".xls") { workbook = new HSSFWorkbook(fs); } else { workbook = null; }
if (workbook == null) { return null; }
ISheet sheet = workbook.GetSheetAt(0);
//表头
IRow header = sheet.GetRow(sheet.FirstRowNum);
List
for (int i = 0; i < header.LastCellNum; i++)
{
object obj = GetValueType(header.GetCell(i));
if (obj == null || obj.ToString() == string.Empty)
{
dt.Columns.Add(new DataColumn("Columns" + i.ToString()));
}
else
dt.Columns.Add(new DataColumn(obj.ToString()));
columns.Add(i);
}
//数据
for (int i = sheet.FirstRowNum + 1; i <= sheet.LastRowNum; i++)
{
DataRow dr = dt.NewRow();
bool hasValue = false;
foreach (int j in columns)
{
dr[j] = GetValueType(sheet.GetRow(i).GetCell(j));
if (dr[j] != null && dr[j].ToString() != string.Empty)
{
hasValue = true;
}
}
if (hasValue)
{
dt.Rows.Add(dr);
}
}
}
return dt;
}
///
/// Excel导入成Datable
///
/// 路径
/// sheet名称
///
public static DataTable ExcelToTable(string file,string sheetName)
{
DataTable dt = new DataTable();
IWorkbook workbook;
string fileExt = Path.GetExtension(file).ToLower();
using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read))
{
//XSSFWorkbook 适用XLSX格式，HSSFWorkbook 适用XLS格式
if (fileExt == ".xlsx") { workbook = new XSSFWorkbook(fs); } else if (fileExt == ".xls") { workbook = new HSSFWorkbook(fs); } else { workbook = null; }
if (workbook == null) { return null; }
//ISheet sheet = workbook.GetSheetAt(0);
ISheet sheet = workbook.GetSheet(sheetName);
if (sheet == null)
{
return null;
}
//表头
IRow header = sheet.GetRow(sheet.FirstRowNum);
List
for (int i = 0; i < header.LastCellNum; i++)
{
object obj = GetValueType(header.GetCell(i));
if (obj == null || obj.ToString() == string.Empty)
{
dt.Columns.Add(new DataColumn("Columns" + i.ToString()));
}
else
dt.Columns.Add(new DataColumn(obj.ToString()));
columns.Add(i);
}
//数据
for (int i = sheet.FirstRowNum + 1; i <= sheet.LastRowNum; i++)
{
DataRow dr = dt.NewRow();
bool hasValue = false;
foreach (int j in columns)
{
dr[j] = GetValueType(sheet.GetRow(i).GetCell(j));
if (dr[j] != null && dr[j].ToString() != string.Empty)
{
hasValue = true;
}
}
if (hasValue)
{
dt.Rows.Add(dr);
}
}
}
return dt;
}
///
/// Excel导入成Datable集合
///
/// 路径
/// sheet名称集合
///
public static DataTable[] ExcelToTable(string file, List< string> list_SheetName)
{
int count = list_SheetName.Count;
DataTable[] dtS =new DataTable[list_SheetName.Count];
//===============================//
IWorkbook workbook;
string fileExt = Path.GetExtension(file).ToLower();
using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read))
{
//XSSFWorkbook 适用XLSX格式，HSSFWorkbook 适用XLS格式
if (fileExt == ".xlsx") { workbook = new XSSFWorkbook(fs); } else if (fileExt == ".xls") { workbook = new HSSFWorkbook(fs); } else { workbook = null; }
if (workbook == null) { return null; }
//=========================================//
ISheet[] sheetS = new ISheet[count];
for (int k = 0; k < count; k++)
{
dtS[k] = new DataTable(list_SheetName[k]);
sheetS[k] = workbook.GetSheet(list_SheetName[k]);
ISheet sheet = sheetS[k];
//==================================//
if (sheet == null)
{
continue;
}
DataTable dt = new DataTable(list_SheetName[k]);
//表头
IRow header = sheet.GetRow(sheet.FirstRowNum);
List
for (int i = 0; i < header.LastCellNum; i++)
{
object obj = GetValueType(header.GetCell(i));
if (obj == null || obj.ToString() == string.Empty)
{
dt.Columns.Add(new DataColumn("Columns" + i.ToString()));
}
else
dt.Columns.Add(new DataColumn(obj.ToString()));
columns.Add(i);
}
//数据
for (int i = sheet.FirstRowNum + 1; i <= sheet.LastRowNum; i++)
{
DataRow dr = dt.NewRow();
bool hasValue = false;
foreach (int j in columns)
{
dr[j] = GetValueType(sheet.GetRow(i).GetCell(j));
if (dr[j] != null && dr[j].ToString() != string.Empty)
{
hasValue = true;
}
}
if (hasValue)
{
dt.Rows.Add(dr);
}
}
dtS[k] = dt;
}
}
return dtS;
}
///
/// Datable导出成Excel
///
///
///
public static void TableToExcel(DataTable dt, string file)
{
IWorkbook workbook;
string fileExt = Path.GetExtension(file).ToLower();
if (fileExt == ".xlsx")
{
//workbook = new XSSFWorkbook();
workbook = new HSSFWorkbook();
}
else if (fileExt == ".xls")
{
workbook = new HSSFWorkbook();
}
else
{
workbook = null;
}
if (workbook == null)
{
return;
}
ISheet sheet = string.IsNullOrEmpty(dt.TableName) ? workbook.CreateSheet("Sheet1") : workbook.CreateSheet(dt.TableName);
//表头
IRow row = sheet.CreateRow(0);
for (int i = 0; i < dt.Columns.Count; i++)
{
ICell cell = row.CreateCell(i);
cell.SetCellValue(dt.Columns[i].ColumnName);
}
//数据
for (int i = 0; i < dt.Rows.Count; i++)
{
IRow row1 = sheet.CreateRow(i + 1);
for (int j = 0; j < dt.Columns.Count; j++)
{
ICell cell = row1.CreateCell(j);
cell.SetCellValue(dt.Rows[i][j].ToString());
}
}
//转为字节数组
MemoryStream stream = new MemoryStream();
workbook.Write(stream);
var buf = stream.ToArray();
//保存为Excel文件
using (FileStream fs = new FileStream(file, FileMode.Create, FileAccess.Write))
{
fs.Write(buf, 0, buf.Length);
fs.Flush();
}
}
///
/// 获取单元格类型
///
///
///
private static object GetValueType(ICell cell)
{
if (cell == null)
return null;
switch (cell.CellType)
{
case CellType.Blank: //BLANK:
return null;
case CellType.Boolean: //BOOLEAN:
return cell.BooleanCellValue;
case CellType.Numeric: //NUMERIC:
return cell.NumericCellValue;
case CellType.String: //STRING:
return cell.StringCellValue;
case CellType.Error: //ERROR:
return cell.ErrorCellValue;
case CellType.Formula: //FORMULA:
default:
return "=" + cell.CellFormula;
}
}
///
/// 重命名列
///
///
///
///
public static void ReNameColumnName(DataTable dt, string oldName, string newName)
{
if (dt.Columns.Contains(oldName))
{
dt.Columns[oldName].ColumnName = newName;
}
}
#endregion
}
}
三、GenerateUtil.cs用于根据excel文件来生成一个创建mysql的语句。源代码如下：
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace AutoGenerateTool
{
public class GenerateUtil
{
///
/// 根据excel文件来生成一个创建mysql的语句
///
///
///
///
public static string GenerateSql(string xlsfilePath, string tableName)
{
try
{
DataTable dt = HansCommon.Excel.NopiExcelOpretaUtil.ExcelToTable(xlsfilePath, tableName);
if (dt == null || dt.Rows.Count == 0)
{
MessageBox.Show($"{tableName}没有配置表的任何数据");
return "";
}
if (!dt.Columns.Contains("TABLE_NAME"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在TABLE_NAME列");
return "";
}
if (!dt.Columns.Contains("En_Name"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在En_Name列");
return "";
}
if (!dt.Columns.Contains("Ch_Name"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在Ch_Name列");
return "";
}
if (!dt.Columns.Contains("Data_Type"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在Data_Type列");
return "";
}
if (!dt.Columns.Contains("Data_Length"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在Data_Length列");
return "";
}
if (!dt.Columns.Contains("Not_Null"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在Not_Null列");
return "";
}
if (!dt.Columns.Contains("Default_Value"))
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--不存在Default_Value列");
return "";
}
int columnCount = dt.Rows.Count;
if (dt.Rows[0]["TABLE_NAME"] == null || tableName != dt.Rows[0]["TABLE_NAME"].ToString().Trim())
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查--表名与表中TABLE_NAME不匹配");
return "";
}
StringBuilder sb = new StringBuilder("CREATE TABLE IF NOT EXISTS `"+ tableName + @"` (
`CoreId` int NOT NULL AUTO_INCREMENT comment '主键自增编号',");
sb.AppendLine();
for (int i = 0; i < columnCount; i++)
{
string fieldName = dt.Rows[i]["En_Name"].ToString();
string dataType= dt.Rows[i]["Data_Type"].ToString();
int length;
if (!int.TryParse(dt.Rows[i]["Data_Length"].ToString(), out length))
{
throw new Exception("输入的数据长度不正确,不是整数，字段：" + fieldName);
}
bool notNull = dt.Rows[i]["Not_Null"].ToString() == "1";
string defaultValue = dt.Rows[i]["Default_Value"].ToString();
string comment= dt.Rows[i]["Ch_Name"].ToString();
string columnInfo = AddField(fieldName, dataType, length, notNull, defaultValue, comment);
sb.AppendLine(columnInfo);
}
sb.AppendLine(@"PRIMARY KEY(`CoreId`)
) ENGINE = InnoDB DEFAULT CHARSET = utf8 comment '焊接生产数据表'");
return sb.ToString();
}
catch (Exception ex)
{
MessageBox.Show($"{tableName}表的UI配置文件错误，请检查:" + ex.Message);
return "";
}
}
///
/// 增加一行字段
///
///
///
///
///
///
///
///
public static string AddField(string fieldName, string dataType, int length, bool notNull, string defaultValue, string comment)
{
dataType = dataType.Trim();
string dataTypeDefine = $"{dataType}";
if (dataType.IndexOf("int", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("integer", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("bigint", StringComparison.CurrentCultureIgnoreCase) >= 0)
{
defaultValue = "0";
}
else if (dataType.IndexOf("real", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("double", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("float", StringComparison.CurrentCultureIgnoreCase) >= 0)
{
//浮点小数
/*float数值类型用于表示单精度浮点数值，而double数值类型用于表示双精度浮点数值，float和double都是浮点型，而decimal是定点型；
MySQL 浮点型和定点型可以用类型名称后加（M，D）来表示，M表示该值的总共长度，D表示小数点后面的长度，M和D又称为精度和标度，如float(7,4)的 可显示为-999.9999，MySQL保存值时进行四舍五入，如果插入999.00009，则结果为999.0001。
FLOAT和DOUBLE在不指定精度时，默认会按照实际的精度来显示，而DECIMAL在不指定精度时，默认整数为10，小数为0。比如Decimal在不指定小数时，1.2345存入数据库中为1，没有小数*/
defaultValue = "0";
}
else if (dataType.IndexOf("decimal", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("numeric", StringComparison.CurrentCultureIgnoreCase) >= 0)
{
//定点小数
//p 和 s 必须遵守以下规则：0 <= s <= p <= 38.如果不指定decimal或numeric的小数位数，则无小数点后面的位数
defaultValue = "0";
if (dataType.ToUpper() == "DECIMAL" || dataType.ToUpper() == "NUMERIC")
{
dataTypeDefine = dataType + "(10,2)";//加上两个小数点
}
}
else if (dataType.IndexOf("char", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("varchar", StringComparison.CurrentCultureIgnoreCase) >= 0)
{
dataTypeDefine = $"{dataType}({length})";
defaultValue = "''";
}
else if (dataType.IndexOf("date", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("time", StringComparison.CurrentCultureIgnoreCase) >= 0
|| dataType.IndexOf("datetime", StringComparison.CurrentCultureIgnoreCase) >= 0)
{
dataTypeDefine = "datetime";
defaultValue = "current_timestamp";
}
string columnStr = $"{fieldName} {dataTypeDefine}{(notNull ? " not null" : "")} DEFAULT {defaultValue} COMMENT '{comment}',";
return columnStr;
}
}
}
四、新建windows窗体FrmDataGridViewIniCofGenerate。界面布局：
FrmDataGridViewIniCofGenerate.cs源代码如下：（忽略设计器自动生成的代码）
using HansCommon.Excel;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace AutoGenerateTool
{
public partial class FrmDataGridViewIniCofGenerate : Form
{
public FrmDataGridViewIniCofGenerate()
{
InitializeComponent();
}
///
/// 选择配置文件 按钮
///
///
///
private void button2_Click(object sender, EventArgs e)
{
richTextBox1.Clear();
string tableName = txtTableName.Text.Trim();
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.InitialDirectory = AppDomain.CurrentDomain.BaseDirectory;
openFileDialog.Filter = "Execl files (*.xls)|*.xls";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
string fileName = openFileDialog.FileName;
string sql = GenerateUtil.GenerateSql(fileName, tableName);
richTextBox1.AppendText(sql);
}
}
private static object locker = new object();
///
/// 保存 按钮
///
///
///
private void button3_Click(object sender, EventArgs e)
{
string sql = richTextBox1.Text;
string tableName = txtTableName.Text.Trim();
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.FileName = string.Format("{0}.sql", tableName);//名称
saveFileDialog1.InitialDirectory = AppDomain.CurrentDomain.BaseDirectory;//路径
saveFileDialog1.Title = "保存文件到";//标题
saveFileDialog1.Filter = "Sql file (*.sql)|*.sql";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
lock (locker)
{
string folder = Path.GetDirectoryName(saveFileDialog1.FileName);
bool existDirectory = Directory.Exists(folder);
if (!existDirectory)
{
Directory.CreateDirectory(folder);
}
File.AppendAllText(saveFileDialog1.FileName, sql, Encoding.Default);
}
MessageBox.Show("已保存创建表SQL语句到文件:\n" + saveFileDialog1.FileName);
}
}
}
}
五、程序运行如图：
