Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin
，，webservice服务中，webConfig中添加以上配置，缺一不可 ...
原文：Received an invalid response. Origin 'null' is therefore not allowed access
Received an invalid response. Origin null is therefore not allowed access. 今天在做二级联动，使用ajax请求xml数据，在用ie 与chrome做测试时就出现了这句话，看到网上也有说跨域等其他，更改浏览器等...... 我的解决方法：我把它放在iis服务器进行测试，请求数据就正常了 ...
2015-03-27 17:17 0 2052 推荐指数：
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