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 :)


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