我有一个CSV文件，包含数千个数据（列是address1 address2 city state zipcode tag county country）的一些代理。我想上传并在谷歌地图中显示这些数据。
以下是参考资料：
http://code.google.com/apis/maps/documentation/mapsdata/developers_guide_protocol.html#uploading_csv
我希望使用此功能在C＃中上传此CSV 比如Bing Maps客户服务，用户可以上传自定义数据并在bing地图中显示。
答案 0 :(得分：2)
要使用webforms上传csv文件，请参阅Microsoft's tutorial，但如果您不打算在物理上保存它，我会直接使用上传控件中的流来避免将其保存到磁盘
可以使用任何csv parser来解析csv。
然后，您可以使用网络上的任何google maps api examples使用java脚本在地图上显示数据。
编辑：尽管您的更新，我设法误解了您的问题。如果您打算直接从c＃拨打其他服务，this article或this可能会有所帮助。
<强> EDIT2： 要将您的csv数据发送到google api，您必须：
答案 1 :(得分：1)
POST http://maps.google.com/maps/feeds/maps/default/full
GData-Version: 2.0
Authorization: GoogleLogin auth="authorization_token"
Content-Type: text/csv
Slug: A new map
name,latitude,longitude,description
Hello,-77.066395,-11.968312,Greetings from Lima!
There,145.34502,-38.51512,Out There Down Under
How,-88.421001,44.970465,How is Wisconsin?
Are,13.084501,63.399164,Sorry about that
You,140.637898,42.842568,I love you Hokkaido
public static class ClientLogin
{
/// <summary>
/// Client login url where we'll post login data to.
/// </summary>
private static string clientLoginUrl =
@"https://www.google.com/accounts/ClientLogin";
/// <summary>
/// Data to be sent with the post request.
/// </summary>
private static string postData =
@"service={0}&continue=http://www.google.com/&Email={1}&Passwd={2}&source={3}";
/// <summary>
/// Get the Auth token you get after a successful login.
/// You'll need to reuse this token in the header of each new request you make.
/// </summary>
/// <param name="service"></param>
/// <param name="username"></param>
/// <param name="password"></param>
/// <param name="source"></param>
/// <returns></returns>
public static string GetAuthToken(
string service, string username, string password, string source)
{
// Get the response that needs to be parsed.
string response = PostRequest(service, username, password, source);
// Get auth token.
string auth = ParseAuthToken(response);
return auth;
}
/// <summary>
/// Parse the Auth token from the response.
/// </summary>
/// <param name="response"></param>
/// <returns></returns>
private static string ParseAuthToken(string response)
{
// Get the auth token.
string auth = "";
try
{
auth = new Regex(@"Auth=(?<auth>\S+)").Match(response).Result("${auth}");
}
catch (Exception ex)
{
throw new AuthTokenException(ex.Message);
}
// Validate token.
if (string.IsNullOrEmpty(auth))
{
throw new AuthTokenException("Missing or invalid 'Auth' token.");
}
// Use this token in the header of each new request.
return auth;
}
/// <summary>
/// Create a post request with all the login data. This will return something like:
///
/// SID=AQAAAH1234
/// LSID=AQAAAH8AA5678
/// Auth=AQAAAIAAAAB910
///
/// And we need the Auth token for each subsequent request.
/// </summary>
/// <param name="service"></param>
/// <param name="email"></param>
/// <param name="password"></param>
/// <param name="source"></param>
/// <returns></returns>
private static string PostRequest(
string service, string email, string password, string source)
{
// Get the current post data and encode.
ASCIIEncoding ascii = new ASCIIEncoding();
byte[] encodedPostData = ascii.GetBytes(
String.Format(postData, service, email, password, source));
// Prepare request.
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(clientLoginUrl);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = encodedPostData.Length;
// Write login info to the request.
using (Stream newStream = request.GetRequestStream())
newStream.Write(encodedPostData, 0, encodedPostData.Length);
// Get the response that will contain the Auth token.
HttpWebResponse response = null;
try
{
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException ex)
{
HttpWebResponse faultResponse = ex.Response as HttpWebResponse;
if (faultResponse != null && faultResponse.StatusCode == HttpStatusCode.Forbidden)
throw new IncorrectUsernameOrPasswordException(
faultResponse.StatusCode, faultResponse.StatusDescription);
else
throw;
}
// Check for login failed.
if (response.StatusCode != HttpStatusCode.OK)
throw new LoginFailedException(
response.StatusCode, response.StatusDescription);
// Read.
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
return reader.ReadToEnd();
}
}
string auth = ClientLogin.GetAuthToken("local", "username", "password", "");
UploadCSV(auth )
public string UploadCSV(string auth)
{
string URI = "http://maps.google.com/maps/feeds/maps/default/full";
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(URI);
//Add these, as we're doing a POST
req.KeepAlive = false;
req.Method = "POST";
req.Headers.Add("GData-Version", "2.0");
req.Headers.Add("Slug", "A new map");
req.Headers.Add("Authorization", "GoogleLogin auth=" + auth);
FileStream fs = new FileStream("E:\\Surajit\\MapPoint\\1.csv", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
req.ContentLength = fs.Length;
req.ContentType = "text/csv";
Stream outputStream = req.GetRequestStream();
WriteInputStreamToRequest(fs, outputStream);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
outputStream.Close();
fs.Close();
if (resp == null) return null;
StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
return sr.ReadToEnd().Trim();
}
protected void WriteInputStreamToRequest(Stream input, Stream output)
{
BinaryWriter w = new BinaryWriter(output);
const int size = 4096;
byte[] bytes = new byte[4096];
int numBytes;
while ((numBytes = input.Read(bytes, 0, size)) > 0)
{
w.Write(bytes, 0, numBytes);
}
w.Flush();
}