将图像保存在网站上的文件夹中，无需上传文件 [英] save image in a folder on your website without fileupload

问题描述

我将我的网站托管在一台服务器上，我有一个名为images的文件夹。我正在接收一个base64字符串，并将其转换为图像并将其保存在我的本地目录中，并且工作正常。

 [WebMethod] 
 public void UploadPics（String imageString）
 {
 // HttpRequest Request = new HttpRequest（）; 
 // HttpPostedFile filePosted = new HttpPostedFile（）; 
 string base64String = imageString; 
 
 //将Base64字符串转换为byte [] 
 byte [] imageBytes = Convert.FromBase64String（base64String）; 
 MemoryStream ms = new MemoryStream（imageBytes，0，imageBytes.Length）; 
 
 //将byte []转换为Image 
 ms.Write（imageBytes，0，imageBytes.Length）; 
 System.Drawing.Image image = System.Drawing.Image.FromStream（ms，true）; 
 // string newFile = Guid.NewGuid（）。ToString（）+ fileExtensionApplication; 
 string filePath =C：/Users/MUWebServices/App_Code/images/pic1.jpg; 
 image.Save（filePath，ImageFormat.Jpeg）; 
} 

但是当我使用

string filePath =http：// mywebsite。 COM /图像/ pic1.jpg; image.Save（filePath，ImageFormat.Jpeg）;

它给我System.ArgumentException：不支持URI格式，我得到的是image.save只获取本地文件夹。所以我的问题是如何将我的图像保存在我的网站文件夹中。我找到了一些解决方案，但都使用了fileUpload，我无法使用它，因为我从android接收base64图像字符串并使用此web服务来保存图像。

解决方案

你可以保存到URL - 这就是http：// ...：它是一个URL，而不是一个路径。

尝试使用：

< pre lang =c＃> string filePath = Server.MapPath（ 〜/图片/ pic1.jpg）;

i have my website hosted on a server and i have a folder their named images.I am recieving a base64 string and convert it into an image and saving it in my local directory and it works perfectly.

[WebMethod]
public void UploadPics(String imageString)
{
    //HttpRequest Request = new HttpRequest();
    //HttpPostedFile filePosted = new HttpPostedFile();
    string base64String = imageString;

    // Convert Base64 String to byte[]
    byte[] imageBytes = Convert.FromBase64String(base64String);
    MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);

    // Convert byte[] to Image
    ms.Write(imageBytes, 0, imageBytes.Length);
    System.Drawing.Image image = System.Drawing.Image.FromStream(ms, true);
    //string newFile = Guid.NewGuid().ToString() + fileExtensionApplication;
    string filePath = "C:/Users/MUWebServices/App_Code/images/pic1.jpg";
    image.Save(filePath, ImageFormat.Jpeg);       
}

But when i use
string filePath = "http://mywebsite.com/images/pic1.jpg"; image.Save(filePath, ImageFormat.Jpeg);
it gives me "System.ArgumentException: URI formats are not supported" and i get it that image.save only gets local folders . So my question is how do i save my image on my website folder. I found some solutions but all were using fileUpload and i can't use that because i am receiving base64 image string from android and using this webservice to save images.

解决方案

You can;t save to URL's - which is what "http://..." is: it's a URL, not a path.
Try using:

string filePath = Server.MapPath("~/images/pic1.jpg");

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