Servlet Utils

request.getContextPath()  // return "/webapp"

Tomcat default main directory:

getServletContext().getRealPath("/"); /var/lib/tomcat7/webapps/webapp1/

System.getProperty("catalina.base"); /var/lib/tomcat7


Load config file
Properties pp = new Properties();
InputStream fis = getServletContext().getResourceAsStream("WEB-INF/settings.properties");
pp.load(fis);


Read File

 String filePath = this.getServletContext().getRealPath("abc.text");
 FileReader fileReader = new FileReader(filePath);
 BufferedReader bufferedReader = new BufferedReader(fileReader);
 String line = bufferedReader.readLine();
 //do with line
 bufferedReader.close();
 fileReader.close();