angular - ng2-file-upload 访问控制来源问题

Question

我已将此库用于 angular2 文件上传 https://github.com/valor-software/ng2-file-upload

现在我在上传文件时遇到这个错误

XMLHttpRequest cannot load http://localhost:8080/files. Response to preflight request doesn't pass access control check: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. Origin 'http://localhost:3000' is therefore not allowed access. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

Answer 1

在上传项目之前设置withCredentials = false。您可以将此代码放在 ngOnInit/constructor 或 ngOnChanges 中。

this.uploader.onBeforeUploadItem = (item) => {
  item.withCredentials = false;
}