java - how to print logs in tomcat servlet application -


i creating servlet on tomcat 6.0 in ubuntu 10.04. printing log used system.setout redirect output.

system.setout(new printstream(new file("/tmp/new.log")));  system.seterr(new printstream(new file("/tmp/new.log")));

i have use code in dopost() when run application not able see output thats why temporarily moved code in doget().

when hit url through browser http://127.0.0.1:8080/hello/hello getting following error on browser

java.security.accesscontrolexception: access denied (java.io.filepermission /tmp/new1.log read)     java.security.accesscontrolcontext.checkpermission(accesscontrolcontext.java:342)     java.security.accesscontroller.checkpermission(accesscontroller.java:553)     java.lang.securitymanager.checkpermission(securitymanager.java:549)     java.lang.securitymanager.checkread(securitymanager.java:888)     java.io.file.exists(file.java:748)     helloworldexample2.doget(helloworldexample2.java:42)     javax.servlet.http.httpservlet.service(httpservlet.java:617)     javax.servlet.http.httpservlet.service(httpservlet.java:717)     sun.reflect.generatedmethodaccessor32.invoke(unknown source)     sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)     java.lang.reflect.method.invoke(method.java:616)     org.apache.catalina.security.securityutil$1.run(securityutil.java:269)     java.security.accesscontroller.doprivileged(native method)     javax.security.auth.subject.doasprivileged(subject.java:537)     org.apache.catalina.security.securityutil.execute(securityutil.java:301)     org.apache.catalina.security.securityutil.doasprivilege(securityutil.java:162)**

i'd suggest using logging framework such log4j, slf4j or logging classes come java itself. you're kind of re-inventing wheel here :)


Comments

Post a Comment

Popular posts from this blog

asp.net - repeatedly call AddImageUrl(url) to assemble pdf document -

i'm using abcpdf , i'm curious if can recursively call addimageurl() function assemble pdf document compile multiple urls? something like: int pagecount = 0; int theid = thedoc.addimageurl("http://stackoverflow.com/search?q=abcpdf+footer+page+x+out+of+", true, 0, true); //assemble document while (thedoc.chainable(theid)) { thedoc.page = thedoc.addpage(); theid = thedoc.addimagetochain(theid); } pagecount = thedoc.pagecount; console.writeline("1 document page count:" + pagecount); //flatten document (int = 1; <= pagecount; i++) { thedoc.pagenumber = i; thedoc.flatten(); } //now try again theid = thedoc.addimageurl("http://stackoverflow.com/questions/1980890/pdf-report-generation", true, 0, true); //assemble document while (thedoc.chainable(theid)) { thedoc.page = thedoc.addpage(); theid = thedoc.addimagetoc...
Read more

java - Android recognize cell phone with keyboard or not? -

in android app, want detect user's device if device has keyboard(like motorola milestone) , show corresponding user interface. guys know how that? ! regards justicepenny http://developer.android.com/reference/android/content/res/configuration.html public int keyboard the kind of keyboard attached device. 1 of: keyboard_nokeys, keyboard_qwerty, keyboard_12key. that's it!
Read more

iphone - How would you achieve a LED Scrolling effect? -

how achieve led scrolling effect example below? led sign - led ticker emulator iphone , ipad http://img.skitch.com/20101201-rsfh4p1bajb1wp94k466pdpiuj.preview.jpg sometimes remunerates comment in other posts :) have put code you, should implement font '8pin matrix' realistic feeling. uilabel *label; - (void)viewdidload { [super viewdidload]; label = [[uilabel alloc]initwithframe:cgrectmake(10, 50, 300, 20)]; label.font = [uifont fontwithname:@"courier-bold" size:16.0]; label.backgroundcolor = [uicolor blackcolor]; label.textcolor = [uicolor greencolor]; label.linebreakmode = uilinebreakmodecharacterwrap; // otherwise "…" label.text = @"this led text scrolled "; // blanks space between [self.view addsubview:label]; [nstimer scheduledtimerwithtimeinterval:0.12f target:self selector:@selector(scrolllabel) use...
Read more