XMLHttpRequest无法加载http://example.com/test.php。 没有'访问控制 - 允许 - 来源

Question

XMLHttpRequest cannot load http://example.com/test.php. No Access-Control-Allow-Origin header is present on the requested resource. Origin http://eample.com is therefore not allowed access.

How to resolve it. i added following headers in that php file:

header('Access-Control-Allow-Origin: *');

header('Access-Control-Allow-Methods: GET, POST, OPTIONS');

header('Access-Control-Allow-Headers: Origin, Content-Type, Accept, 
Authorization, X-Request-With');

header('Access-Control-Allow-Credentials: true');

i replace my domain name 'codeXXX' with 'example' dont confuse with that

Answer 1

The header

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST');

MUST be given in response to an OPTION request to "http://example.com/test.php". If OPTION request contains this header, the following GET (or POST) will be accepted.

If the browser says that the header "Access-Control-Allow-Origin" is not present, ... just add it ^_^

header('Access-Control-Allow-Headers: Access-Control-Allow-Origin, Origin, Content-Type, Accept, Authorization, X-Request-With');