org.apache.tomcat.util.log
Class SystemLogHandler

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          java.io.PrintStream
              org.apache.tomcat.util.log.SystemLogHandler

public class SystemLogHandler

extends java.io.PrintStream

This helper class may be used to do sophisticated redirection of System.out and System.err on a per Thread basis. A stack is implemented per Thread so that nested startCapture and stopCapture can be used.

Author:

Remy Maucherat, Glenn L. Nielsen

Field Summary

protected static java.lang.ThreadLocal	logs Thread <-> CaptureLog associations.
protected java.io.PrintStream	out Wrapped PrintStream.
protected static java.util.Stack	reuse Spare CaptureLog ready for reuse.

Constructor Summary

SystemLogHandler(java.io.PrintStream wrapped)
Construct the handler to capture the output of the given steam.

Method Summary

boolean	checkError()
void	close()
protected java.io.PrintStream	findStream() Find PrintStream to which the output must be written to.
void	flush()
void	print(boolean b)
void	print(char c)
void	print(char[] s)
void	print(double d)
void	print(float f)
void	print(int i)
void	print(long l)
void	print(java.lang.Object obj)
void	print(java.lang.String s)
void	println()
void	println(boolean x)
void	println(char x)
void	println(char[] x)
void	println(double x)
void	println(float x)
void	println(int x)
void	println(long x)
void	println(java.lang.Object x)
void	println(java.lang.String x)
protected void	setError()
static void	startCapture() Start capturing thread's output.
static java.lang.String	stopCapture() Stop capturing thread's output and return captured data as a String.
void	write(byte[] b)
void	write(byte[] buf, int off, int len)
void	write(int b)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

out

protected java.io.PrintStream out

Wrapped PrintStream.

logs

protected static java.lang.ThreadLocal logs

Thread <-> CaptureLog associations.

reuse

protected static java.util.Stack reuse

Spare CaptureLog ready for reuse.

Constructor Detail

SystemLogHandler

public SystemLogHandler(java.io.PrintStream wrapped)

Construct the handler to capture the output of the given steam.

Method Detail

startCapture

public static void startCapture()

Start capturing thread's output.

stopCapture

public static java.lang.String stopCapture()

Stop capturing thread's output and return captured data as a String.

findStream

protected java.io.PrintStream findStream()

Find PrintStream to which the output must be written to.

flush

public void flush()

close

public void close()

checkError

public boolean checkError()

setError

protected void setError()

write

public void write(int b)

write

public void write(byte[] b)
           throws java.io.IOException

Throws:

java.io.IOException

write

public void write(byte[] buf,
                  int off,
                  int len)

print

public void print(boolean b)

print

public void print(char c)

print

public void print(int i)

print

public void print(long l)

print

public void print(float f)

print

public void print(double d)

print

public void print(char[] s)

print

public void print(java.lang.String s)

print

public void print(java.lang.Object obj)

println

public void println()

println

public void println(boolean x)

println

public void println(char x)

println

public void println(int x)

println

public void println(long x)

println

public void println(float x)

println

public void println(double x)

println

public void println(char[] x)

println

public void println(java.lang.String x)

println

public void println(java.lang.Object x)