I am trying to use Exadel Fiji for rendering Pie graphs.
Can someone tell me what does the el #{facesContext.externalContext.requestContextPath} mean ?
It returns you path to your project in webapps directory.
For instance, if your project name is myProj,that it will return /myProj
As I see,it's needed to avoid hardcoding of your web-project name. For instance, you .war file(archive,that contains your project) may be named different ways and you shouldn't know what exactly name it will be extracted under webapps.
来源：https://stackoverflow.com/questions/4668175/what-does-the-el-facescontext-externalcontext-requestcontextpath-mean