Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension,
2016-12-07 10:10
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问题:打开本地文件时,报错如下:
将html代码拖拽进入chrome通过file协议浏览时,发送的ajax请求本地文件,会报跨域错误。
分析:浏览器为了安全性考虑,默认对跨域访问禁止。
解决办法是给chrome添加启动参数:–allow-file-access-from-files ,这样本地ajax请求就不会报跨域错误了。(注意如果给chrome添加多个启动参数,每个启动参数“–”之前要有空格隔开,如”C:\Program Files\Google\Chrome\Application\chrome.exe” –enable-file-cookies –allow-file-access-from-files)
如何添加chrome启动参数以便支持file协议下的ajax请求,具体看这个:chrome无法保存本地设置cookie解决办法
如下图:
将html代码拖拽进入chrome通过file协议浏览时,发送的ajax请求本地文件,会报跨域错误。
XMLHttpRequest cannot load file:///E:/webs/extJS/ext-3.3.0/examples/csdn/combobox.txt?_dc=1414738973999. Cross origin requests are only supported for protocol schemes: http, data, chrome-extension, https, chrome-extension-resource.
分析:浏览器为了安全性考虑,默认对跨域访问禁止。
解决办法是给chrome添加启动参数:–allow-file-access-from-files ,这样本地ajax请求就不会报跨域错误了。(注意如果给chrome添加多个启动参数,每个启动参数“–”之前要有空格隔开,如”C:\Program Files\Google\Chrome\Application\chrome.exe” –enable-file-cookies –allow-file-access-from-files)
如何添加chrome启动参数以便支持file协议下的ajax请求,具体看这个:chrome无法保存本地设置cookie解决办法
要想chrome本地设置的cookie也要能保存,需要配置过chrome,给chrome快捷方式添加 --enable-file-cookies启动参数,右键点击chrome桌面快捷图标,属性,在目标最后添加--enable-file-cookies启动参数,注意--前面要有空格。 添加了--allow-file-access-from-files启动参数后,还可以解决本地file加载文件,导致iframe和父页无法相互访问,window.open打开的页面使用opener为null的问题,参考:chrome本地测试访问iframe,parent,opener null解决办法
如下图:
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