使用SAX解析器解析大型XML文件(跳过一些行/标记)

I am currently developing an app that retrieves data from the internet using SAX. I used it before for parsing simple XML files like Google Weather API. However, the websites that I am interested in take parsing to the next level. The page is huge and looks messy. I only need to retrieve some specific lines; the rest is not useful for me.I am currently developing an app that retrieves