万象更新 Html5 - js: js 的 jsonp
万象更新 Html5 - js: js 的 jsonp
示例如下:
js\jsonp.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>jsonp</title>
</head>
<body>
<script>
function showToast(data) {
alert(data);
}
function addScript(src) {
var script = document.createElement('script');
script.setAttribute('type', 'text/javascript');
script.src = src;
document.body.appendChild(script);
}
window.onload = function() {
addScript('http://localhost:42858/jsonp?jsoncallback=showToast');
}
</script>
</body>
</html>
WebApi\WebApi\ApiController.cs
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.SignalR;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace WebApi
{
public class ApiController : Controller
{
[Route("hello")]
public IActionResult Hello()
{
return Content("hello webabcd", "text/plain", Encoding.UTF8);
}
[Route("get_long")]
public async Task GetLong()
{
Response.Headers.Add("Access-Control-Allow-Origin", "*");
Response.Headers.Add("Access-Control-Allow-Headers", "*");
Response.Headers.Add("Access-Control-Request-Method", "*");
Response.Headers.Add("Access-Control-Expose-Headers", "*");
Response.ContentType = "text/html";
Response.StatusCode = 200;
Response.ContentLength = 10;
for (int i = 0; i < 10; i++)
{
await Task.Delay(10);
var content = "a";
var data = Encoding.UTF8.GetBytes(content);
await Response.Body.WriteAsync(data, 0, data.Length);
await Response.Body.FlushAsync();
}
}
[Route("jsonp")]
public IActionResult Jsonp(string jsoncallback)
{
return Content(jsoncallback + "('hello jsonp');", "text/plain", Encoding.UTF8);
}
[Route("redirect")]
public IActionResult Redirect()
{
return Redirect("https://www.cnblogs.com/webabcd/");
}
[Route("fetch")]
public IActionResult Fetch()
{
Response.Headers.Add("Access-Control-Allow-Origin", "*");
Response.Headers.Add("Access-Control-Allow-Headers", "*");
return Content("{ \"name\": \"webabcd\" }", "application/json", Encoding.UTF8);
}
}
}
