微信图片防盗链中转
废话不多说,直接上干货
MVC 的处理模式,将微信图片地址作为输入参数,内部创建远程连接,获取响应结果,然后以 byte字节流
.格式输出图片文件类型
public FileResult WXPictureAntiLeech(string url)
{
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
request.Referer = "";
request.Method = "get";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
System.IO.Stream stream = null;
stream = (Stream)response.GetResponseStream();
List<byte> bytes = new List<byte>();
int temp = stream.ReadByte();
while (temp != -1)
{
bytes.Add((byte)temp);
temp = stream.ReadByte();
}
byte[] byteFile = bytes.ToArray();
return File(byteFile, "image/jpeg");
}
下面来篇WebApi的,也是返回二进制文件,只不过返回类不一样,
[AllowAnonymous]//特性,跳过验证操作
[HttpGet]
public IHttpActionResult WXPictureAntiLeech(string url = "")
{
if (string.IsNullOrWhiteSpace(url)) return Ok();
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
request.Referer = "";
request.Method = "get";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
System.IO.Stream stream = null;
stream = (Stream)response.GetResponseStream();
List<byte> bytes = new List<byte>();
int temp = stream.ReadByte();
while (temp != -1)
{
bytes.Add((byte)temp);
temp = stream.ReadByte();
}
byte[] byteFile = bytes.ToArray();
//var result = new FileStreamResult(stream, "image/png");
var result = new FileByteResult(byteFile, "image/png");
return result;
}
前端图片展示
<a target="top" href="/api/Controller/Action?url=' + value + ' alt="..."><img src="/api/Controller/Action?url=' + value + ' alt="..." style="width:60px;height:60px;" /></a>
直接返回后台接口地址,通过?传值的方式将图片路径带上,展示的图片地址也就随之而展示了,如下图
如有其他疑难杂症欢迎在评论下方留言