<p style="text-indent:2em;">打开Chrome浏览器，点击右上角“三”按钮，点击更多工具--开发者工具，找到network选项框，按F5，然后点击对应的请求流，查看头部信息。</p> <p align="center"><img align="" alt="" border="0" height="320" src="$/History/tech/uploadfiles/help/2017/11/201711161129290046.png" width="535" /></p> <p align="center"><img align="" alt="" border="0" height="266" src="$/History/tech/uploadfiles/help/2017/11/201711161129547336.png" width="530" /></p>
