在使用FCKeditor的时候，里边有一个功能就是超链接中能选择文件上传，如图：
但是测试的时候发现这个功能一点“发送到服务器上”按钮，就会提示“invalid request”。最后从官方的一个帖子里得到了解决方法，感谢一下该贴作者。
I had this problem as well. The problem is that it can't find the type of resource for upload. I assume that it should detect the resource type by file extension, but there is no code to do that.
I fixed it by adding the resource type "File" in the config. I think this is a workaround, but it worked for me.
So the link browser url looks somewhat like this (added Type=File&):
FCKConfig.LinkBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?Type=File&Connector=http://www.cnblogs.com/http://www.cnblogs.com/connector.' + _FileBrowserExtension;
And the quick upload looks like this (added + '?Type=File' ):
FCKConfig.LinkUploadURL = FCKConfig.BasePath + '../upload.' + _QuickUploadExtension + '?Type=File' ;
I fixed it by adding the resource type "File" in the config. I think this is a workaround, but it worked for me.
So the link browser url looks somewhat like this (added Type=File&):
FCKConfig.LinkBrowserURL = FCKConfig.BasePath + 'filemanager/browser/default/browser.html?Type=File&Connector=http://www.cnblogs.com/http://www.cnblogs.com/connector.' + _FileBrowserExtension;
And the quick upload looks like this (added + '?Type=File' ):
FCKConfig.LinkUploadURL = FCKConfig.BasePath + '../upload.' + _QuickUploadExtension + '?Type=File' ;
也就是，在配置文件中（fckconfig.js）中将FCKConfig.LinkUploadURL 属性改为FCKConfig.BasePath + '../upload.' + _QuickUploadExtension + '?Type=File' ;
即可。