MVC - 如何从 url 请求和保存 pdf 文件 [英] MVC - How to request and save a pdf file from a url
问题描述
我需要编写一个包含 3 个部分的 api:
- 从 pdf url 获取 pdf 文件.
- 转换 pdf.
- 返回转换后的 pdf 文件.
我已经完成了第 2 部分和第 3 部分，剩下的就是从 url 获取 pdf 并将其复制/下载到我的 mvc web api.
这是测试的html代码:
<脚本 >$('#btnSendRequest').on('click', function() {$.ajax({类型:POST"，url: "/Convertor/Html",数据: {strUrl: "http://make-sense.co.il/kb/avcp-script-installation.pdf"},成功:功能(数据){返回真；},});});</script><html xmlns="http://www.w3.org/1999/xhtml"><头><script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script><title>测试员</title><身体><h1>测试人员html</h1><div><input id="btnSendRequest" type="button" value="SendHttpRequest"/>My ActionResult function: "convertor/html" ，从网页中获取 url 字符串.我需要的是当我点击按钮时，pdf文件会自动下载到我的服务器.
public ActionResult Html(string strUrl){返回视图()；}有谁知道如何做到这一点?我还在某处阅读了一些名为 base64 编码的内容，这可能也是解决方案，但我以前从未使用过它.
提前致谢.
你可能要找的是 .NET 上的 WebClient，看下面的例子，我只是从网上的一个例子中抓取的，参见 此处 全文.
使用系统；使用 System.Net；使用 System.IO；课程计划{静态无效主(){使用 (WebClient 客户端 = new WebClient()){//下载数据.byte[] arr = client.DownloadData("http://url-to-your-pdf-file.com/file1");File.WriteAllBytes(path_to_your_app_data_folder, arr)}}}您需要通过将 byte[] 保存为某个文件来进行进一步处理.上面的示例代码适用于控制台应用程序，但同样可以在您的 mvc 控制器中实现.
I need to program an api that has 3 parts:
- Get the pdf file from pdf url.
- Converting the pdf.
- Return the converted pdf file.
I have already completed part 2 and 3, What left is to fetch the pdf from url and copy/download it to my mvc web api.
This is the test html code:
< script >
$('#btnSendRequest').on('click', function() {
$.ajax({
type: "POST",
url: "/Convertor/Html",
data: {
strUrl: "http://make-sense.co.il/kb/avcp-script-installation.pdf"
},
success: function(data) {
return true;
},
});
}); < /script>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<title>tester</title>
</head>
<body>
<h1>tester html</h1>
<div>
<input id="btnSendRequest" type="button" value="SendHttpRequest" />
</div>
My ActionResult function: "convertor/html" , gets the url string from the web page. What I need is when I click the button, the pdf file will be automatically download to my server.
public ActionResult Html(string strUrl)
{
return View();
}
Anyone has any idea how that can be done? I also read somewhere on something called base64 encoding that might be also the solution, but I have never used it before.
Thanks in advance.
What you might be looking for is the WebClient on .NET, see the following example, I just grabbed it from an example online, see here for full article.
using System;
using System.Net;
using System.IO;
class Program
{
static void Main()
{
using (WebClient client = new WebClient())
{
// Download data.
byte[] arr = client.DownloadData("http://url-to-your-pdf-file.com/file1");
File.WriteAllBytes(path_to_your_app_data_folder, arr)
}
}
}
you will need to do further processing by saving the byte[] as a file somewhere. the example code above is for a console app, but the same can be implemented in your mvc controller.
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