Re: Class for sending STDERR to log4j

2007-02-24 Thread Robin Walker

That worked.  This is an incredibly useful add-on.  Thanks for your help.

-Robin

--- James Stauffer <[EMAIL PROTECTED]> wrote:

> Try something like Level.error or Level.ERROR.
> 
> On 2/23/07, Robin Walker <[EMAIL PROTECTED]> wrote:
> > Hello,
> >
> > Looking online, I found this neat bit of code and am trying to use it to 
> > send
> STDERR
> > to log4j so we can log all System.err using log4j.  Trouble is, it requires 
> > both
> a
> > Logger and Level to be passed into the constructor and I'm a bit confused 
> > with
> > regards to the "Level".
> >
> > #1 - I'm not clear on what this could represent besides logger.getLevel(), 
> > so it
> > seems redundant to me.  Granted, I am not an experienced log4j user.
> >
> > #2 - If I do pass in logger.getLevel(), this code snippet errors out because
> level
> > appears to be set to null.
> >
> > #3 - Instantiating a new org.apache.log4j.Level() object doesn't seem 
> > feasible
> for
> > reasons that I don't quite understand but probably are apparent to the more
> > experienced.
> >
> > Below is the code snippet.  Does anyone have any ideas, or other experiences
> trying
> > to accomplish this sort of thing?
> >
> > Much thanks,
> >
> > -Robin
> >
> > import java.io.IOException;
> > import java.io.OutputStream;
> > import java.io.PrintStream;
> >
> > import org.apache.log4j.Level;
> > import org.apache.log4j.Logger;
> >
> > /**
> > * An OutputStream that flushes out to a Category.
> > * 
> > * Note that no data is written out to the Category until the stream is
> > * flushed or closed.
> > * 
> > * Example:
> > * // make sure everything sent to System.err is logged
> > * System.setErr(new PrintStream(new
> > * JscLoggingOutputStream(Category.getRoot(),
> > * Priority.WARN), true));
> > * 
> > * // make sure everything sent to System.out is also logged
> > * System.setOut(new PrintStream(new
> > * JscLoggingOutputStream(Category.getRoot(),
> > * Priority.INFO), true));
> > * 
> > *
> > * @author mailto://[EMAIL PROTECTED]">Jim Moore
> > * @see Category
> > */
> >
> > //
> > public class JscLoggingOutputStream extends OutputStream {
> >
> > static Logger myLogger =
> Logger.getLogger(JscLoggingOutputStream.class.getName());
> >
> >  /**
> >   * Used to maintain the contract of [EMAIL PROTECTED] #close()}.
> >   */
> >  protected boolean hasBeenClosed = false;
> >
> >  /**
> >   * The internal buffer where data is stored.
> >   */
> >  protected byte[] buf;
> >
> >  /**
> >   * The number of valid bytes in the buffer. This value is always
> >   * in the range 0 through buf.length; elements
> >   * buf[0] through buf[count-1] contain valid
> >   * byte data.
> >   */
> >  protected int count;
> >
> >  /**
> >   * Remembers the size of the buffer for speed.
> >   */
> >  private int bufLength;
> >
> >  /**
> >   * The default number of bytes in the buffer. =2048
> >   */
> >  public static final int DEFAULT_BUFFER_LENGTH = 2048;
> >
> >
> >  /**
> >   * The category to write to.
> >   */
> >  protected Logger logger;
> >
> >  /**
> >   * The priority to use when writing to the Category.
> >   */
> >  protected Level level;
> >
> >
> >  private JscLoggingOutputStream() {
> >// illegal
> >  }
> >
> >
> >  /**
> >   * Creates the JscLoggingOutputStream to flush to the given Category.
> >   *
> >   * @param log  the Logger to write to
> >   * @param level the Level to use when writing to the Logger
> >   * @throws IllegalArgumentException if cat == null or priority ==
> >   * null
> >   */
> >  public JscLoggingOutputStream(Logger log, Level level)
> >  throws IllegalArgumentException {
> >
> >  System.out.println("we're in here...");
> >  System.out.println("we're in here...");
> >  System.out.println("we're in here...");
> >  System.out.println("we're in here...");
> >  System.out.println("we're in here...");
> >
> >if (log == null) {
> >  System.out.println("error 1");
> >
> >  throw new IllegalArgumentException("cat == null");
> >}
> >if (level == null) {
> >System.out.println("error 2");
> >  throw new IllegalArgumentException("priority == null");
> >}
> >
> > this.level = level;
> >
> >logger = log;
> >bufLength = DEFAULT_BUFFER_LENGTH;
> >buf = new byte[DEFAULT_BUFFER_LENGTH];
> >count = 0;
> >  }
> >
> >
> >  /**
> >   * Closes this output stream and releases any system resources
> >   * associated with this stream. The general contract of
> >   * close
> >   * is that it closes the output stream. A closed stream cannot
> >   * perform
> >   * output operations and cannot be reopened.
> >   */
> >  public void close() {
> >flush();
> >hasBeenClosed = true;
> >  }
> >
> >
> >  /**
> >   * Writes the specified byte to this output stream. The general
> >   * contract for write is that one byte is written
> >   * to the output stream. The byte to be written is the eight
> >   * low-order bits of the argument b. The 24
> >   * high-order bits of b a

Re: How to use log4j (log4j.xml) and Maven and Junit??

2007-02-24 Thread Jacob Kjome

At 07:29 AM 2/24/2007, you wrote:
>hi - i have exactly the same issue:
>* i did what you mentioned (1-3)
>* yes it copies the log4j.xml to the right place under src/test/
>* BUT the testrunner the complains that it cannot find the file under the
>projects root directory (where also the pom.xml sits)
>
>log4j:ERROR Could not parse file [log4j.xml].
>java.io.FileNotFoundException: 
D:\_devel\_java\_workspace\springtest\log4j.xml

>
>=> but he should look under
>
>D:\_devel\_java\_workspace\springtest\target\test-classes\log4j.xml
>
>
>=> the call from the java source to the log4j.xml looks like
>static
>{
>DOMConfigurator.configure("log4j.xml");
>logger = Logger.getLogger(AppTest.class);
>}
>
>
>strange - any hints on that ?
>

Not strange at all.  You are giving a relative file path which will 
be resolved to the directory where the JVM started, which is likely 
the directory of the pom.xml.  Why are you manually configuring Log4j 
anyway?  Just copy log4j.xml to "test-classes" and let Log4j's 
autoconfiguration perform the configuration.  There is no reason to 
manually call configure().



Jake



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Re: How to use log4j (log4j.xml) and Maven and Junit??

2007-02-24 Thread gerold kathan
hi - i have exactly the same issue:
* i did what you mentioned (1-3)
* yes it copies the log4j.xml to the right place under src/test/
* BUT the testrunner the complains that it cannot find the file under the 
projects root directory (where also the pom.xml sits)

log4j:ERROR Could not parse file [log4j.xml].
java.io.FileNotFoundException: D:\_devel\_java\_workspace\springtest\log4j.xml 

=> but he should look under

D:\_devel\_java\_workspace\springtest\target\test-classes\log4j.xml


=> the call from the java source to the log4j.xml looks like
static
{
DOMConfigurator.configure("log4j.xml");
logger = Logger.getLogger(AppTest.class);
}


strange - any hints on that ?




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