从输入流创建字节数组的首选方法是什么?
这是我目前使用.NET 3.5的解决方案.
Stream s;
byte[] b;
using (BinaryReader br = new BinaryReader(s))
{
b = br.ReadBytes((int)s.Length);
}
Run Code Online (Sandbox Code Playgroud)
读取和写入流的块是否仍然是一个更好的主意?
在常规的MVC控制器中,我们可以用a输出pdf FileContentResult.
public FileContentResult Test(TestViewModel vm)
{
var stream = new MemoryStream();
//... add content to the stream.
return File(stream.GetBuffer(), "application/pdf", "test.pdf");
}
Run Code Online (Sandbox Code Playgroud)
但是我们怎样才能把它变成一个ApiController?
[HttpPost]
public IHttpActionResult Test(TestViewModel vm)
{
//...
return Ok(pdfOutput);
}
Run Code Online (Sandbox Code Playgroud)
这是我尝试过但它似乎不起作用.
[HttpGet]
public IHttpActionResult Test()
{
var stream = new MemoryStream();
//...
var content = new StreamContent(stream);
content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
content.Headers.ContentLength = stream.GetBuffer().Length;
return Ok(content);
}
Run Code Online (Sandbox Code Playgroud)
浏览器中显示的返回结果为:
{"Headers":[{"Key":"Content-Type","Value":["application/pdf"]},{"Key":"Content-Length","Value":["152844"]}]}
Run Code Online (Sandbox Code Playgroud)
在SO上有类似的帖子:从ASP.NET Web API中的控制器返回二进制文件 .它讨论输出现有文件.但我无法使用流.
有什么建议?
我正在寻找一个WebApi示例,其中默认路由将给定调用者返回给定的html页面.我的路线和行动设置如下.我只想向他发送index.html页面,而不是重定向,因为他在正确的位置.
http://localhost/Site // load index.html
// WebApiConfig.cs
config.Routes.MapHttpRoute(
name: "Root",
routeTemplate: "",
defaults: new { controller = "Request", action = "Index" }
);
// RequestControlller.cs
[HttpGet]
[ActionName("Index")]
public HttpResponseMessage Index()
{
return Request.CreateResponse(HttpStatusCode.OK, "serve up index.html");
}
Run Code Online (Sandbox Code Playgroud)
如果我使用这个错误,那么更好的方法是什么,你能指点我一个例子吗?
WebApi 2与.NET 4.52
编辑:嗯,改进了它,但得到了json头而不是页面内容.
public HttpResponseMessage Index()
{
var path = HttpContext.Current.Server.MapPath("~/index.html");
var content = new StringContent(File.ReadAllText(path), Encoding.UTF8, "text/html");
return Request.CreateResponse(HttpStatusCode.OK, content);
}
{"Headers":[{"Key":"Content-Type","Value":["text/html; charset=utf-8"]}]}
Run Code Online (Sandbox Code Playgroud) 我目前正在使用ASP.NET Core RC2,我遇到了一些奇怪的结果.所以我有一个MVC控制器,具有以下功能:
public HttpResponseMessage Tunnel() {
var message = new HttpResponseMessage(HttpStatusCode.OK);
message.Content = new StringContent("blablabla", Encoding.UTF8);
message.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("text/plain");
message.Headers.CacheControl = new System.Net.Http.Headers.CacheControlHeaderValue {
NoCache = true
};
return message;
}
Run Code Online (Sandbox Code Playgroud)
如果我用邮递员调用此方法并将Accept标头设置为text plain,我会收到以下回复:
{
"Version": {
"Major": 1,
"Minor": 1,
"Build": -1,
"Revision": -1,
"MajorRevision": -1,
"MinorRevision": -1
},
"Content": {
"Headers": [
{
"Key": "Content-Type",
"Value": [
"text/plain"
]
}
]
},
"StatusCode": 200,
"ReasonPhrase": "OK",
"Headers": [
{
"Key": "Cache-Control",
"Value": [
"no-cache"
]
}
], …Run Code Online (Sandbox Code Playgroud)