org.apache.jasper.util
Class SystemLogHandler

java.lang.Object
  extended byjava.io.OutputStream
      extended byjava.io.FilterOutputStream
          extended byjava.io.PrintStream
              extended byorg.apache.jasper.util.SystemLogHandler

public class SystemLogHandler
extends java.io.PrintStream

This helper class may be used to do sophisticated redirection of System.out and System.err.

Author:
Remy Maucherat

Field Summary
protected static java.lang.ThreadLocal data
          Thread <-> ByteArrayOutputStream associations.
protected static java.lang.ThreadLocal streams
          Thread <-> PrintStream associations.
protected  java.io.PrintStream wrapped
          Wrapped PrintStream.
 
Fields inherited from class java.io.FilterOutputStream
out
 
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()
           
 java.io.PrintStream getWrapped()
           
 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 setThread()
          Start capturing thread's output.
static java.lang.String unsetThread()
          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

wrapped

protected java.io.PrintStream wrapped
Wrapped PrintStream.


streams

protected static java.lang.ThreadLocal streams
Thread <-> PrintStream associations.


data

protected static java.lang.ThreadLocal data
Thread <-> ByteArrayOutputStream associations.

Constructor Detail

SystemLogHandler

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

Method Detail

getWrapped

public java.io.PrintStream getWrapped()

setThread

public static void setThread()
Start capturing thread's output.


unsetThread

public static java.lang.String unsetThread()
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)


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