我正在创建一个Web服务，它应该读取一个excel文件，并返回一个SQL表，其中包含相应列中excel表的所有值。这是我的网络服务的代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Data;
using System.Data.OleDb;
using System.Data.Common;
using System.Data.Sql;
using System.Data.SqlClient;
using System.IO;
namespace FileUploader
{
/// <summary>
/// Summary description for Service1
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class Service1 : System.Web.Services.WebService
{
[WebMethod]
public string simple()
{
return "Hello World";
}
[WebMethod]
private string cleaner(string query)
{
query = query.Replace("'", "");
query = query.Replace("\\", "");
query = query.Replace("/", "");
query = query.Replace("\"", "");
query = query.Replace(".", "");
query = query.Replace(";", ",");
return query;
}
[WebMethod]
private string insertinsql(string query)
{
string constr = @"Data Source=.\SQLEXPRESS;AttachDbFilename=""C:\Users\Sagnik\documents\visual studio 2010\Projects\FileUploader\FileUploader\App_Data\Database1.mdf"";Integrated Security=True;User Instance=True";
SqlConnection con = new SqlConnection(constr);
try
{
con.Open();
}
catch (Exception e)
{
return e.ToString();
}
SqlCommand cmd = new SqlCommand(query, con);
cmd.Connection = con;
try
{
cmd.ExecuteNonQuery();
}
catch (Exception e)
{
return e.ToString();
}
con.Close();
return "1";
}
[WebMethod]
public string upload(string file)
{
//string path = Path.GetFullPath(file);
System.Data.DataTable dt = null;
string SourceConstr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" + file + "';Extended Properties= 'Excel 8.0;HDR=No;IMEX=1'";
OleDbConnection con = new OleDbConnection(SourceConstr);
try
{
con.Open();
}
catch(Exception e)
{
return e.ToString();
}
dt = con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
if (dt == null)
{
return "dt was null";
}
String[] excelSheets = new String[dt.Rows.Count];
int sh = 0;
foreach (DataRow row in dt.Rows)
{
if (row["TABLE_NAME"].ToString().Contains("$"))
{
excelSheets[sh] = row["TABLE_NAME"].ToString();
sh++;
}
}
int count = 0;
for (int z = 0; z < sh; z++)
{
if (!excelSheets[z].ToString().Contains("Print_Area"))
{
count = 0;
string query = "SELECT top 1 * FROM [" + excelSheets[z] + "];";
OleDbCommand command = new OleDbCommand(query, con);
OleDbDataReader odr = command.ExecuteReader();
string[] names = new string[50];
while (odr.Read())
{
count = odr.FieldCount;
int i = 0;
while (i < count)
{
names[i] = cleaner(odr[i].ToString()).Replace(" ", "");
i += 1;
}
break;
}
int j = 0;
string name = Path.GetFileNameWithoutExtension(file);
query = "CREATE TABLE " + cleaner(name) + "_" + cleaner(excelSheets[z]).Replace(" ", "").Replace("$", "") + " ( ";
for (int i = 0; i < count; i++)
{
if (names[i] != "")
{
query += (names[i] + " VARCHAR(100), ");
j += 1;
}
}
if (query.Contains("VARCHAR(100)"))
{
count = j;
query = query.Substring(0, query.Length - 2);
query = query + ");";
string checker = insertinsql(query);
if (checker != "1")
{
return checker;
}
odr.Close();
string src = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source='" + file + "';Extended Properties= 'Excel 8.0;HDR=Yes;IMEX=1'";
OleDbConnection conn = new OleDbConnection(src);
conn.Open();
string q = "SELECT * FROM [" + excelSheets[z] + "];";
OleDbCommand cmd = new OleDbCommand(q, conn);
odr = cmd.ExecuteReader();
int check = 1;
while (odr.Read())
{
query = "INSERT INTO " + cleaner(name) + "_" + cleaner(excelSheets[z]).Replace(" ", "").Replace("$", "") + " (";
for (int i = 0; i < count; i++)
{
query += (names[i] + ", ");
}
query = query.Substring(0, query.Length - 2);
query += ") VALUES (";
for (int i = 0; i < count; i++)
{
query += ("'" + cleaner(odr[i].ToString()) + "', ");
}
query = query.Substring(0, query.Length - 2);
query += ");";
if (check == 1)
{
insertinsql(query);
}
else
{
return "Error";
}
}
conn.Close();
}
}
}
con.Close();
return "Copy Successful...Tables Saved As " + Path.GetFileNameWithoutExtension(file);
}
}
}
这是一个使用Web服务的测试应用程序：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using TestUploader.testweb;
namespace TestUploader
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.FileName == "")
{
return;
}
else if (System.IO.Path.GetExtension(FileUpload1.FileName).ToString() != ".xls" && System.IO.Path.GetExtension(FileUpload1.FileName).ToString() != ".xlsx")
{
Response.Write("<script type='text/javascript'>alert('Please Upload A Valid Excel File');</script>");
return;
}
else
{
Label1.Text = "Please Wait...Copying Data";
Service1 ser = new Service1();
string path = SaveFile(FileUpload1.PostedFile);//System.IO.Path.GetFullPath(FileUpload1.FileName);
string s = ser.upload(path);
Label1.Text = s;
}
}
string SaveFile(HttpPostedFile file)
{
// Specify the path to save the uploaded file to.
string savePath = "c:\\Apps\\Uploads\\";
// Get the name of the file to upload.
string fileName = FileUpload1.FileName;
// Create the path and file name to check for duplicates.
string pathToCheck = savePath + fileName;
// Create a temporary file name to use for checking duplicates.
string tempfileName = "";
// Check to see if a file already exists with the
// same name as the file to upload.
if (System.IO.File.Exists(pathToCheck))
{
int counter = 2;
while (System.IO.File.Exists(pathToCheck))
{
// if a file with this name already exists,
// prefix the filename with a number.
tempfileName = System.IO.Path.GetFileNameWithoutExtension(fileName) + counter.ToString() + System.IO.Path.GetExtension(fileName);
pathToCheck = savePath + tempfileName;
counter++;
}
fileName = tempfileName;
// Notify the user that the file name was changed.
}
else
{
// Notify the user that the file was saved successfully.
}
// Append the name of the file to upload to the path.
savePath += fileName;
// Call the SaveAs method to save the uploaded
// file to the specified directory.
FileUpload1.SaveAs(savePath);
return savePath;
}
}
}
此代码运行正常，但它将文件上载到Web服务，并在Web服务中创建数据库。现在，我被告知，在使用网络服务时，我们无法继续上传文件，因为网络服务可能无法访问。我可以将excel文件作为数据行上传，但是所有工作都将由客户端程序完成，我希望Web服务尽可能方便用户使用。
所以，我有两个问题：
有没有更好的方法来完成这项工作而无需将文件上传到网络服务？
由于必须在客户端程序的数据库中创建表，我想将所有查询附加到同一个字符串中，并将字符串返回给客户端程序，然后它可以在sql server manager。再次，有没有更好的方法使这个用户更友好？
提前致谢！