无法从我的 web 应用程序中的其他服务器获取图像
[英]Unable to get the Image from the Other server in my web App
问题描述
I am trying to retrieve an image from the other server using IP Address which is over the network but Unable to get the image in my web app.
我正在尝试使用 IP 地址从其他服务器检索图像，该地址通过网络但无法在我的 web 应用程序中获取图像。
I've tried the following ways to write the image path but unable to get the image:我尝试了以下方法来编写图像路径但无法获取图像：
C#: C#：
string imagePath = @"http://192.168.10.245/Shared/1.jpg";
OR或者
string imagePath = @"file://192.168.10.245/Shared/1.jpg";
OR或者
string imagePath = @"\\192.168.10.245\Shared\1.jpg";
OR或者
string imagePath = @"192.168.10.245/Shared/1.jpg";
emp_img.ImageUrl = imagePath;
aspx: aspx：
<asp:Image runat="server" ID="emp_img" CssClass="imgstyle" />
kindly note that the image is placed in a Shared Folder which is opening fine in Windows Explorer请注意，图像放置在共享文件夹中，该文件夹在 Windows Explorer 中可以正常打开
kindly help me resolve this请帮我解决这个问题
Thanks谢谢
UPDATE:更新：
I've created an Image Handler to achieve this:我创建了一个图像处理程序来实现这一点：
ImgHandler.ashx: ImgHandler.ashx：
public class ImgHandler : IHttpHandler {
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "image/jpg";
string EmpCode = context.Request.Params["EmpCode"].ToString();
string path = "//192.168.10.245\\Shared\\"+EmpCode+".jpg";
context.Response.WriteFile(path);
}
public bool IsReusable {
get {
return false;
}
}
}
aspx: aspx：
<img src="ImgHandler.ashx?EmpCode=1" style="max-width:250px; max-height:250px;" />
I'm still unable to get the image, kindly help me writting the path我仍然无法获取图像，请帮我写路径
2 个解决方案
解决方案1
0 2019-11-06 10:52:31
Web browsers refuse to load resources referenced by UNC paths or local file paths - this is for security purposes so that public Internet web-pages cannot snoop your network or computer for files. Web 浏览器拒绝加载 UNC 路径或本地文件路径引用的资源 - 这是出于安全目的，因此公共 Internet 网页无法窥探您的网络或计算机的文件。
To display images like this your ASP.NET application will need to proxy-load the image itself first.要显示这样的图像，您的 ASP.NET 应用程序需要先代理加载图像本身。
You can do this in WebForms by creating an *.ashx handler that accepts the file path as a querystring and then attempts to load the file itself - but be sure to sanitize the input because this can be used by attackers and malicious (or idiot) users to get any file the web-server has access to (see: https://en.wikipedia.org/wiki/Directory_traversal_attack )您可以在 WebForms 中通过创建一个*.ashx处理程序来执行此操作，该处理程序接受文件路径作为查询字符串，然后尝试加载文件本身 - 但请务必清理输入，因为攻击者和恶意（或白痴）可以使用它用户获取网络服务器有权访问的任何文件（参见： https://en.wikipedia.org/wiki/Directory_traversal_attack ）
解决方案2
0 2019-11-06 12:35:29
Put Your Image Inside a Placeholder....Hope it is useful to you.......将您的图像放在占位符中....希望对您有用....
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="SC1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UP1" runat="server">
<ContentTemplate>
<asp:PlaceHolder ID="PlaceHolder1" runat="server">
<asp:Image ID="Image1" runat="server" />
</asp:PlaceHolder>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
In Code Behind......在代码背后......
protected void Page_Load(object sender, EventArgs e)
{
string str = "~/Images/Accept.png/"; ----Specify Your Url In Proper Way...
Image1.ImageUrl = str;
}
Note:-笔记：-
PlaceHolder is an asp.net web server control which used to store dynamically added web server controls on the web page. PlaceHolder 是一个 asp.net web 服务器控件，用于在 Z25267A5EC9705EB7 页面上存储动态添加的 web 服务器控件。
For More Info about...PlaceHolder Refer this Below Link...有关... PlaceHolder 的更多信息，请参阅下面的链接...
https://asp-net-example.blogspot.com/2009/02/aspnet-placeholder-example-how-to-use.html https://asp-net-example.blogspot.com/2009/02/aspnet-placeholder-example-how-to-use.html
解决方案3
0 2019-11-07 06:42:24
The following code resolved my Problem:以下代码解决了我的问题：
ashx:灰烬：
public void ProcessRequest (HttpContext context) {
try
{
context.Response.ContentType = "image/jpg";
string FileName = context.Request.Params["FileName"].ToString();
string path = System.Configuration.ConfigurationManager.AppSettings["ProfilePhotoPath"].ToString()+FileName;
byte[] pic = GetImage(path);
if (pic != null)
{
context.Response.WriteFile(path);
}
}
catch (Exception ex)
{
}
}
private byte[] GetImage(string iconPath)
{
using (WebClient client = new WebClient())
{
byte[] pic = client.DownloadData(iconPath);
//string checkPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) +@"\1.png";
//File.WriteAllBytes(checkPath, pic);
return pic;
}
}
.CS: 。CS：
emp_img.ImageUrl = "ImgHandler.ashx?FileName=1.jpg";
web.config: web.config：
<add key="ProfilePhotoPath" value="\\\\192.168.10.245\\Pic\\"/>
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