针对实际应用的问题，提出一种基于数据库的文件上传方法，该方法通过表单提交文件信息，服务器端程序从多域数据流析取文件内容并直接写入数据库。
By sending the file information through HTML form, the Action on the server side extract the file from multipart stream and store it into the database.
测试结果表明，联邦数据服务系统FDSS能够实现多域之间一致和高效的协同。
The results of tests indicate that FDSS can achieve uniform and high-efficient coordination of multiple domains.
并采用分布式认证方法，支持用户跨域访问应用服务器，有效实现了多域环境下的单点登录。
The SSO across multiple domain is implemented by means of distributed authentication, so the users can access the application server in different do- main.
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