Servlet doing serialization
Hi all,
I'm designing a small app in order to perform compilation test on struts framework using flash tools. The project is organized this way: the user tells how many "compilation test" he wants to perform on the main page and then these informations are passed to a servlet which generates fake informations about the user and perform the compilation of a Flash animation. All these informations (first name, last name, mail, various informations and path to flash animation) are stored inside a separate class which also reads the content of the flash file and stores it into an attribute. This class implements the serializable interface. When things are done, I try to serialize the object.
Problems are beginning at this point: I'm not able to serialize my object. In fact, I generate a random filename and pass it to a FileOutputStream, so it is supposed to create my file. Despite of this, I get an*annoying* Error 500 which tells me the following:
java.io.FileNotFoundException: /var/lib/tomcat5/webapps/struts_test/WEB_INF/classes/objects/aGdsPhOboRJgf.ser (No such file or directory)
java.io.FileOutputStream.open (Native Method)
java.io.FileOutputStream.<init> (FileOutputStream.java:179)
java.io.FileOutputStream.<init> (FileOutputStream.java:70)
java.io.FileWriter.<init> (FileWriter.java:46)
struts_test.IdentifyAction1.execute (IdentifyAction1.java:76)
org.apache.struts.action.RequestProcessor.processActionPerform (RequestProcessor.java:421)
org.apache.struts.action.RequestProcessor.process (RequestProcessor.java:226)
org.apache.struts.action.ActionServlet.process (ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doPost (ActionServlet.java:415)
javax.servlet.http.HttpServlet.service (HttpServlet.java:709)
javax.servlet.http.HttpServlet.service (HttpServlet.java:802)
sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke (Method.java:597)
org.apache.catalina.security.SecurityUtil$1.run (SecurityUtil.java:243)
java.security.AccessController.doPrivileged (Native Method)
javax.security.auth.Subject.doAsPrivileged (Subject.java:517)
org.apache.catalina.security.SecurityUtil.execute (SecurityUtil.java:272)
org.apache.catalina.security.SecurityUtil.doAsPrivilege (SecurityUtil.java:161)
This stacktrace guides us to the idea that we don't have deployed the right security policy, but it isn't. My catalina.policy contains the following:
grant codeBase"file:${catalina.home}/webapps/struts_test/-"{
...
permission java.io.FilePermission"/var/lib/tomcat5/webapps/struts_test/WEB-INF/classes/struts_test/flash/-","read,write";
permission java.io.FilePermission"/var/lib/tomcat5/webapps/struts_test/WEB-INF/classes/objects/test.ser","write,read";
.....
};
So I've tried to tell it a nice permission java.security.AllPermission;
and this results in the non-appearance of the error message, but the file is*NOT* created... It's going to drive me nuts... So if anyone has an idea, I'd be honoured to read it :)
Thanks!
System Configuration:
OS: Ubuntu Linux 7.04
Tomcat: version 5.0
Java: JDK1.6.0_02
SE with some Ant and Struts-related libraries and
