/* */
private static void CheckFormat(this ExcelSource excel, DataTable table)
{
if (table.Rows.Count < excel.TitleRow)
{
//TODO:这里要换成标准语句
throw new Exception("数据太少");
}
var titleRow = table.Rows[excel.TitleRow];
foreach (var field in excel.Fields)
{
//TODO:逐列判断是否存在
}
}
private static IEnumerable <object[]> CreateParameters(this ExcelSource excel, DataTable table)
{
for (int i = excel.RowFrom; i < table.Rows.Count; i++)
{
if (!excel.IsValidRow(table, i))
{
continue;
}
List <object> paras = new List <object>();
foreach (var f in excel.Fields)
{
paras.Add(f.Name);
paras.Add(f.GetFieldValue(table, i));
}
yield return(paras.ToArray());
}
yield break;
}
public static ExcelImportResult OnExecute(string fileName)
{
var importResult = new ExcelImportResult();
var items = new List <object>();
//手动加个数据测试
ExcelToSql excelConfig = new ExcelToSql();
ExcelSource source = new ExcelSource();
source.SheetName = "用户清单";
excelConfig.Source = source;
SqlTarget target = new SqlTarget();
SqlConfig sqlConfig = new SqlConfig();
sqlConfig.CommandName = "ImportRecord";
sqlConfig.GroupName = "系统安全";
sqlConfig.TableName = "[dbo].[sys_User]";
//SqlItem sqlItem1 = new SqlItem();
sqlConfig.Parameters = null;
target.SqlRowImport = sqlConfig;
excelConfig.Target = target;
ImportSource importSource = new ImportSource();
importSource.RowFrom = 2;
importSource.TitleRow = 1;
CollectionBase <ImportField> fieldList = new CollectionBase <ImportField>();
ImportField field1 = new ImportField();
field1.Name = "UserID"; field1.IsRequired = true; field1.Title = "用户ID"; field1.AllowEmpty = false;
//importField.Converter = string.Empty; importField.ConverterParameter = string.Empty;暂时不考虑转换
ImportField field2 = new ImportField();
field2.Name = "UserName"; field2.IsRequired = true; field2.Title = "登录名"; field2.AllowEmpty = false;
ImportField field3 = new ImportField();
field3.Name = "FullName"; field3.IsRequired = true; field3.Title = "用户名"; field3.AllowEmpty = false;
ImportField field4 = new ImportField();
field4.Name = "Email"; field4.IsRequired = true; field4.Title = "邮箱"; field4.AllowEmpty = false;
ImportField field5 = new ImportField();
field5.Name = "IsValid"; field5.IsRequired = true; field5.Title = "是否有效"; field5.AllowEmpty = false;
fieldList.Add(field1); fieldList.Add(field2); fieldList.Add(field3); fieldList.Add(field4); fieldList.Add(field5);
importSource.Fields = fieldList;
Dictionary <string, ExcelToSql> directory = new Dictionary <string, ExcelToSql>();//根据sheetName判断调用哪个配置参数,系统初始读取不同配置加载到内存,静态全局
Dictionary <string, string> parameter = new Dictionary <string, string>();
directory.Add(source.SheetName, excelConfig);
//检查配置是否完整
//读文件
string strCon = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties='Excel 12.0;HDR=NO;IMEX=0'";
using (OleDbConnection myConn = new OleDbConnection(strCon))
{
DataTable dtTable = new DataTable();
try
{
myConn.Open();
System.Data.DataTable dt = myConn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
foreach (DataRow row in dt.Rows) //多少个sheets
{
string sheetName = row["TABLE_NAME"].ToString(); //sheetName
string name = sheetName.TrimEnd(new char[] { '$' });
if (!directory.ContainsKey(name))
{
throw new Exception("上传文件工作表名和配置项不对应");
}
ExcelToSql config = directory[name];
var sqlItem = config.Target.SqlRowImport.SqlItem;
if (sqlItem == null)
{
throw new Exception("SQL配置不存在");
}
var conn = SqlData.Current.Connections[sqlItem.ConnectionName];
if (conn == null)
{
throw new Exception("数据连接不存在");
}
string commandText = "select * from [" + sheetName + "]";//SQL语句
OleDbDataAdapter odp = new OleDbDataAdapter(commandText, myConn);
odp.Fill(dtTable);
var rows = dtTable.Rows;
var columns = dtTable.Columns;
int fromIndex = config.Source.RowFrom; //table内容行
int titleRowNumber = config.Source.TitleRow; //table标题行
var requiredFields = config.Source.Fields.Where(x => x.IsRequired);
var allowEmptyFields = config.Source.Fields.Where(x => x.AllowEmpty == false); //允许为空应该是判断不允许为空字段值
List <string> titles = new List <string>();
for (int i = 0; i < columns.Count; i++)
{
string titleName = rows[titleRowNumber][i].ToString();//读取标题行
titles.Add(titleName);
}
foreach (var importField in requiredFields)//标题Title限制条件,不符合直接取消导入
{
if (!titles.Contains(importField.Title))
{
throw new Exception("上传文件工作表字段格式错误");
}
}
for (int i = fromIndex; i < rows.Count; i++)//内容是否允许不为空判断,逻辑todo
{
for (int j = 0; j < columns.Count; j++)
{
string value = rows[i][j].ToString();
foreach (var importField in allowEmptyFields)//判断每个Name限制条件,不符合直接取消导入
{
if (!importField.AllowEmpty && value.IsNullOrEmpty())
{
}
}
parameter.Add(columns[j].ToString(), value);
items.Add(parameter);//添加sql参数
}
}
//开始导入：导入需要一个较长的时间
using (var db = conn.Open())
{
using (var trans = db.BeginTransaction())
{
try
{
foreach (var item in items)
{
var count = (int)db.ExecuteScalar(sqlItem, items.ToArray());
//0、不更新；1、新增成功；2、更新成功；
switch (count)
{
case 0:
importResult.CancelCount += 1;
break;
case 1:
importResult.InsertCount += 1;
break;
case 2:
importResult.UpdateCount += 1;
break;
}
}
trans.Commit();
}
catch
{
trans.Rollback();
throw;
}
}
}//结束导入
}
}
catch (Exception ex)
{
dtTable = new DataTable();
}
}
return(importResult);
}
private static bool IsValidRow(this ExcelSource excel, DataTable table, int rowIndex)
{
//TODO:先要判断是否为有效数据
return(true);
}