Access to XMLHttpRequest at 'XXX' from origin 'XX' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present o AJAX跨域请求解决方法

今天出现了一个问题找了好久先看代码:

这可能是个BUG吧插入代码:

 dataType: 'jsonp',  
 crossDomain: true,  

最终:

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转载自www.cnblogs.com/zzguan/p/10117174.html