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XmlHttp是一种可用于模拟HTTP的GET和POST请求的浏览器对象,与JavaScript搭配可实现Web页面的无刷新数据更新。在许多场合,XmlHttp对象也用于跨站数据提取。对此应用加以改进,可实现一个比较实用的Web代理。本文对这种代理方式的思路和实现细节进行了介绍,并对比说明了该方案的优点以及应用场合。
XmlHttp is a browser object that can be used to emulate HTTP GET and POST requests, paired with JavaScript for refresh-free data updates of Web pages. In many cases, the XmlHttp object is also used for cross-site data extraction. This application to be improved, to achieve a more practical Web proxy. This article describes the ideas and implementation details of this proxy approach, and contrasts the advantages and applications of the solution.