利用layui框架可以上传文件调试拦截成功！
???????[HttpPost] ???????public IActionResult Method1(IFormFile file) ???????{ ???????????return Json(new{success="ok"}); ???????}
<div class="layui-card"> ???<div class="layui-card-header">拖拽上传</div> ???<div class="layui-card-body"> ???????<div class="layui-upload-drag" id="test-upload-drag"> ???????????<i class="layui-icon layui-icon-upload"></i> ???????????<p>点击上传，或将文件拖拽到此处</p> ???????</div><input class="layui-upload-file" type="file"> ???</div></div><script> ???layui.use("upload", ???????function() { ???????????layui.upload.render({ ???????????????elem: ‘#test-upload-drag‘, ???????????????url: ‘@Url.Action("Method1")‘, ???????????????accept:"file", ???????????????done: function(res) { ???????????????????//上传完毕回调 ???????????????}, ???????????????error: function() { ???????????????????//请求异常回调 ???????????????} ???????????}); ???????});</script>
[原]Asp.net Core 2.1.2 测试成功Ajax上传文件新解法
原文地址：https://www.cnblogs.com/yzpopulation/p/9320632.html