"java EE Enterprise Application Combat Learning record" Authorityfilter

1  packagesanglp.servlet;2 3 Importjavax.servlet.*;4 Importjavax.servlet.annotation.WebFilter;5 Importjavax.servlet.annotation.WebInitParam;6 Importjavax.servlet.http.HttpServletRequest;7 Importjavax.servlet.http.HttpSession;8 Importjava.io.IOException;9 Ten  one  a /** - * Created by Administrator on 2016/10/5. -  */ the@WebFilter (filtername = "authority", Urlpatterns = {"/*"},initparams = { -@WebInitParam (name = "encoding", value = "UTF-8"), -@WebInitParam (name = "loginpage", value = "/chap2/login.jsp"), -@WebInitParam (name = "prologin", value= "/chap2/prologin.jsp") + }) -  public classAuthorityfilterImplementsFilter { +     //configuration information for accessing the filter a     Privatefilterconfig config; at  - @Override -      public voidInit (filterconfig Filterconfig)throwsservletexception { -          this. config=filterconfig; -     } -  in @Override -      public voidDestroy () { to          this. config=NULL; +     } -  the @Override *      public voidDoFilter (servletrequest servletrequest, servletresponse servletresponse, filterchain Filterchain)throwsioexception, servletexception { $         //gets the configuration parameters for the filterPanax NotoginsengString Encoding=config.getinitparameter ("encoding"); -String Loginpage=config.getinitparameter ("loginpage"); theString Prologin=config.getinitparameter ("prologin"); +         //set the character set for request encoding a servletrequest.setcharacterencoding (encoding); theHttpServletRequest hreq=(httpservletrequest) servletrequest; +HttpSession Session=hreq.getsession (true); -         //get a page for a customer request $String requestpath=Hreq.getservletpath (); $         //if the user of the session range is null, no Dengli is Indicated. And the user requested is neither the login page nor the page that handles the login -         if(session.getattribute ("user") = =NULL&&!requestpath.endswith (loginpage) &&!Requestpath.endswith (PROLOGIN)) { -Servletrequest.setattribute ("tip", "you are not logged in"); the Servletrequest.getrequestdispatcher (loginpage). forward (servletrequest,servletresponse); - Wuyi}Else{ the             //Fulfillment Request - Filterchain.dofilter (servletrequest,servletresponse); wu         } -     } about}

"java EE Enterprise Application Combat Learning record" Authorityfilter