Failed to load resource: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. file:///I:/%E7%94%9F%E7%89%A9%E6%B4%97%E6%B6%A4%E5%A1%94/xidi/resource/xml/materialType.xml * F3 y( A9 G& XXMLHttpRequest cannot load file:///I:/%E7%94%9F%E7%89%A9%E6%B4%97%E6%B6%A4%E5%A1%94/xidi/resource/xml/materialType.xml. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. % x& r# r: O- n2 s* ~ ?