/// <summary>
/// 获取服务端版本文件 失败抛出异常
/// </summary>
/// <param name="url">请求地址</param>
/// <returns>版本文件的Xml内容</returns>
public static string GetUpgradeList(string url)
{
try
{
HttpWebClient client = new HttpWebClient();
client.Encoding = System.Text.Encoding.UTF8;
url = string.Format("{0}/Upgrade/UpgradeList", url);
return(client.DownloadString(url));
}
catch (WebException ex)
{
//响应不为空异常时，获取服务器返回的错误信息
if (ex.Response != null)
{
Stream stream = ex.Response.GetResponseStream();
StreamReader reader = new StreamReader(stream);
string result = reader.ReadToEnd();
throw new Exception(result);
}
else
{
Exception baseEx = ex.GetBaseException();
if (baseEx != null)
{
throw baseEx;
}
else if (ex.InnerException != null)
{
throw ex.InnerException;
}
else
{
throw ex;
}
}
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 同步下载文件 失败抛出异常
/// </summary>
/// <param name="hostUrl"></param>
/// <param name="fileName"></param>
/// <param name="localFileName"></param>
public static void DownloadFile(string hostUrl, string fileName, string localFileName)
{
try
{
HttpWebClient client = new HttpWebClient();
string url = string.Format("{0}/Upgrade/DownloadFile?fileName={1}", hostUrl, HttpUtility.UrlEncode(fileName));
client.DownloadFile(url, localFileName);
}
catch (WebException ex)
{
//响应不为空异常时，获取服务器返回的错误信息
if (ex.Response != null)
{
Stream stream = ex.Response.GetResponseStream();
StreamReader reader = new StreamReader(stream);
string result = reader.ReadToEnd();
throw new Exception(result);
}
else
{
Exception baseEx = ex.GetBaseException();
if (baseEx != null)
{
throw baseEx;
}
else if (ex.InnerException != null)
{
throw ex.InnerException;
}
else
{
throw ex;
}
}
}
catch (Exception e)
{
throw e;
}
}
