在程序开发过程中，往往会涉及到将Excel表格导入到数据库中的需求，而当excel表格内容很多的时候，我们往往会很难去捕捉它的执行过程进度和一些错误信息，此时我们便可以通过以下方法去解决这些难题，具体实现过程分析如下：
//1.这里为了简便，我只写出了前端页面中的body体部分供参考：
form id="forms" runat = "server">
table align="center" style="height:100%">
tr style="height:45%">td>/td>/tr>
tr>
td align="center" style="height: 24px; width: 100px;"> Excel文件/td>
td style="height: 24px">
asp:FileUpload ID="fuGlossaryXls" runat="server"/>
asp:Label ID="Label2" runat="server" Font-Bold="True" ForeColor="Red" Text="不能为空"
Visible="False">/asp:Label>/td>
td>
asp:Button ID="Button1" runat="server" CssClass="mybotton" Text="导入" Width="60px" onclick="Button1_Click"/>/td>
/tr>
/table>
/form>
//2.后端部分代码如下：
//这里是激发导入按钮点击事件
protected void Button1_Click(object sender, EventArgs e)
{
string cfilename = this.fuGlossaryXls.FileName;//获取准备导入的文件名称
if (cfilename == "")
{
Label2.Visible = true;
return;
}
else
{
Label2.Visible = false;
}
//////////////显示进度/////////////////////////////////////////////////////////////////////////////
DateTime startTime = System.DateTime.Now;
DateTime endTime = System.DateTime.Now;
// 根据 ProgressBar.htm 显示进度条界面
string templateFileName = Path.Combine(Server.MapPath("."), "ProgressBar.htm");
StreamReader reader = new StreamReader(@templateFileName, System.Text.Encoding.GetEncoding("gb2312"));
string html = reader.ReadToEnd();
reader.Close();
Response.Write(html);
Response.Flush();
System.Threading.Thread.Sleep(1000);
string jsBlock;
// 处理完成
jsBlock = "script>BeginTrans('正在加载数据，请耐心等待...');/script>";
Response.Write(jsBlock);
Response.Flush();
string fileName = fuGlossaryXls.PostedFile.FileName.Substring(fuGlossaryXls.PostedFile.FileName.LastIndexOf("\\") + 1);//获取准备导入文件的文件名
string suffix = fileName.Substring(fileName.LastIndexOf(".") + 1);//获取准备导入文件的后缀名
System.Threading.Thread.Sleep(200);
int maxrows = 0;//用来记录需要加载的数据总行数
bool err = false;//用来记录加载状态
int errcount = 0;//用来记录加载错误行数
if (fuGlossaryXls.HasFile)//判断当前是否有选取文件
{
if (suffix == "xlsx")
{
DataTable dt = ExcelImport(fileName);
for (int i = 0; i dt.Rows.Count; i++)
{
maxrows++;
}
//////////拓展////////////////////////////////////////////////////////
//DataView myView = new DataView(dt);
//myView.RowFilter = "name is not null";
//int t = myView.Count;//获取满足RowFilter 条件的数据行
//////////拓展////////////////////////////////////////////////////////
string sqlconnect = "Data Source=.;Initial Catalog=test;User ID=sa;Password=123456;";//本地数据库链接
SqlConnection conn = new SqlConnection(sqlconnect);
SqlTransaction myTrans = null;
try
{
SqlCommand cmd = new SqlCommand(null, conn);
conn.Open();
myTrans = conn.BeginTransaction();
cmd.Transaction = myTrans;
cmd.CommandText = "delete from test";
cmd.ExecuteNonQuery();//首先执行清除表内容操作
for (int j = 0; j dt.Rows.Count; j++)//循环向数据库中插入excel数据
{
if (string.IsNullOrEmpty(dt.Rows[j][0].ToString()))
{
jsBlock = "script>EndTrans('第" + j.ToString() + "行数据写入错误。');/script>";
Response.Write(jsBlock);
Response.Flush();
err = true;
errcount++;
}
else
{
cmd.CommandText = string.Format("insert into test values('{0}','{1}','{2}','{3}')", dt.Rows[j][0], dt.Rows[j][1], dt.Rows[j][2], dt.Rows[j][3]);
cmd.ExecuteNonQuery();//逐行向表中插入数据，注意字段的对应
}
System.Threading.Thread.Sleep(1000);
float cposf = 0;
cposf = 100 * (j + 1) / maxrows;
int cpos = (int)cposf;
jsBlock = "script>SetPorgressBar('已加载到第" + (j + 1).ToString() + "条','" + cpos.ToString() + "');/script>";
Response.Write(jsBlock);
Response.Flush();
}
myTrans.Commit();//提交
}
catch (Exception ex)
{
myTrans.Rollback();//回滚
ClientScript.RegisterStartupScript(this.GetType(), "alert", "script>alert('" + ex.Message + "');/script>");
}
finally
{
conn.Dispose();
conn.Close();//关闭数据库连接
}
}
else
{
ClientScript.RegisterStartupScript(GetType(), "", "alert('请选择Excel文件!');", true);
}
}
else
{
ClientScript.RegisterStartupScript(GetType(), "", "alert('请选择要导入的Excel!');", true);
}
if (!err)//加载中并没有出现错误
{
// 处理完成
jsBlock = "script>EndTrans('处理完成。');/script>";
Response.Write(jsBlock);
Response.Flush();
}
else
{
jsBlock = "script>EndTrans('共有"+maxrows.ToString()+"条数据需要加载，其中 有"+errcount.ToString()+"条数据录入错误！');/script>";
Response.Write(jsBlock);
Response.Flush();
}
System.Threading.Thread.Sleep(1000);
endTime = DateTime.Now;//录入完成所用时间
TimeSpan ts1 = new TimeSpan(startTime.Ticks);
TimeSpan ts2 = new TimeSpan(endTime.Ticks);
TimeSpan ts = ts2.Subtract(ts1).Duration(); //取开始时间和结束时间两个时间差的绝对值
String spanTime = ts.Hours.ToString() + "小时" + ts.Minutes.ToString() + "分" + ts.Seconds.ToString() + "秒";
jsBlock = "script>SetTimeInfo('加载完成，共用时" + spanTime + "');/script>";
Response.Write(jsBlock);
Response.Flush();
}
public DataTable ExcelImport(string fileName) //建立Excel表链接，返回Excel表数据
{
//EXCEL 的连接串
string sConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" +
"Data Source=C:\\Documents and Settings\\Administrator\\桌面\\" + fileName + ";" +
"Extended Properties='Excel 8.0;IMEX=1';";
//string sConnectionString = "Microsoft.ACE.OLEDB.4.0;" +
//"Data Source=C:\\Documents and Settings\\Administrator\\桌面\\" + fileName + ";" +
//"Extended Properties='Excel 8.0;IMEX=1';";
OleDbConnection objConn = new OleDbConnection(sConnectionString);//建立EXCEL的连接
//说明：程序运行到这里的时候有时会出错“未在本地计算机上注册“Microsoft.ACE.OLEDB.12.0”提供程序”，此时大多数情况下我们只需要去http://download.microsoft.com/download/7/0/3/703ffbcb-dc0c-4e19-b0da-1463960fdcdb/AccessDatabaseEngine.exe下载一个AccessDatabaseEngine.exe安装即可，原因在于你的office没有安装ACCESS组件
objConn.Open();
OleDbCommand objCmdSelect = new OleDbCommand("SELECT * FROM [Sheet1$]", objConn);
OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();
objAdapter1.SelectCommand = objCmdSelect;
DataSet objDataset1 = new DataSet();
objAdapter1.Fill(objDataset1, "XLData");
DataTable dt = objDataset1.Tables[0];
//DataView myView = new DataView(dt);
objConn.Close();//关闭EXCEL的连接
return dt;
}
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