Author: eitch

This is a quick snipped on transmitting a PDF in a JSF context: byte[] bytes = getPDFStreamAsArray(); FacesContext faces = FacesContext.getCurrentInstance(); HttpServletResponse response = (HttpServletResponse) faces.getExternalContext() .getResponse(); response.reset(); response.setContentType(“application/pdf”); response.setContentLength(bytes.length); response.setHeader(“Content-disposition”, “inline;filename=”file.pdf””); // inline or attachment response.setHeader(“Cache-Control”, “cache, must-revalidate”); ServletOutputStream out = response.getOutputStream(); out.write(bytes); faces.responseComplete();

Beware people… Referring to missing methods in a Bean from a XHTML page using the expression language yields an exception, but referring to a *private* method, doesn’t to nothing. No exception, no message, just plain and simply nothing. I spent hours trying to understand why my application didn’t work, and now I know it: Be… Continue reading “JSF and EL (Expression Language) rant !” →

Your object which will be accessible through RMI must meet the following requirements: have its own interfaces which extends java.rmi.Remote all methods must “throws RemoteException“ all returned returned objects must implement java.io.Serializable Starting a RMI server: Set system property: System.setProperty(“java.rmi.server.hostname”, “hostname”); create registry: Registry registry = LocateRegistry.createRegistry(1099); export Object: RemotableObject stub = (RemotableObject) UnicastRemoteObject.exportObject(remoteObject, 0);… Continue reading “Java RMI quick and dirty” →

Just a quick blog on configuring some specific Tomcat 6.0 settings: Memory Heap Size on a unix based system Open the file %tomcat_install_folder%/bin/startup.sh Add the line: export CATALINA_OPTS=”-Xms256m -Xmx512m” before the line: exec “$PRGDIR”/”$EXECUTABLE” start “$@” to have a memory heap of at least 256mb and max of 512mb. Memory Heap Size on a Windows… Continue reading “Apache Tomcat 6.0 configuration for developers” →

Ever wanted to use Log4j, but didn’t know how to configure it? Or you don’t remember how to configure it in a jiffy? Just add the following two lines in your application, like say in the main()-method and then your’re done: BasicConfigurator.configure(new ConsoleAppender(new PatternLayout(“%d %5p [%t] %C{1} %M – %m%n”))); Logger.getRootLogger().setLevel(Level.INFO); The first line sets… Continue reading “Simple Configuration for Log4j” →