[JAVA] Common processing and error processing springmvc

Common processing and error processing


Reference URL
https://www.techscore.com/tech/Java/JavaEE/Servlet/6/


Explanation By implementing the implements Filter, common processing can be created.


Later, when it is completely finished. When it is completely finished.
	@Override
	public void destroy() {
    	System.out.println("destroy");
	}

When loaded for the very first time
	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
    	System.out.println("init");
	}





★ Every time the controller is called

			//Is it a direct URL?
/*			if(req.getHeader("referer") == null&&!req.getRequestURI().equals("/OfficeSystem_Hibernate/Login")){
				//Does the URL path exist in Request Mapping
				if(list.contains(req.getServletPath())) {
					throw new Exception("BACKLOGIN");
				}else {
					//System.out.println(req.getServletPath()+"Shows error page because does not exist");
					throw new Exception("NotFoundError");
				}
			}




	        if(req.getRequestURI().equals("/OfficeSystem_Hibernate/SendMail")) {		//Fix
	        	if(session.getAttribute("role").toString().equals("0")) {				//Fix
		        	throw new Exception("No access rights");							//Fix
	        	}																		//Fix
	        }																			//Fix


			}else if(ex.getMessage().equals("No access rights")) {						//Fix
				request.setAttribute("errmessage", ex);									//Fix
				req.getRequestDispatcher("/WEB-INF/error/InternalError.jsp")			//Fix
                .forward(req, res);														//Correction transfer
			}