org.apache.jasper.util
Class SystemLogHandler

java.lang.Object
  |
  +--java.io.OutputStream
        |
        +--java.io.FilterOutputStream
              |
              +--java.io.PrintStream
                    |
                    +--org.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.util.Hashtable data
          Thread <-> ByteArrayOutputStream associations.
protected  java.io.PrintStream out
          Wrapped PrintStream.
protected static java.util.Hashtable streams
          Thread <-> PrintStream associations.
 
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 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

out

protected java.io.PrintStream out
Wrapped PrintStream.


streams

protected static java.util.Hashtable streams
Thread <-> PrintStream associations.


data

protected static java.util.Hashtable 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

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()
Overrides:
flush in class java.io.PrintStream

close

public void close()
Overrides:
close in class java.io.PrintStream

checkError

public boolean checkError()
Overrides:
checkError in class java.io.PrintStream

setError

protected void setError()
Overrides:
setError in class java.io.PrintStream

write

public void write(int b)
Overrides:
write in class java.io.PrintStream

write

public void write(byte[] b)
           throws java.io.IOException
Overrides:
write in class java.io.FilterOutputStream
java.io.IOException

write

public void write(byte[] buf,
                  int off,
                  int len)
Overrides:
write in class java.io.PrintStream

print

public void print(boolean b)
Overrides:
print in class java.io.PrintStream

print

public void print(char c)
Overrides:
print in class java.io.PrintStream

print

public void print(int i)
Overrides:
print in class java.io.PrintStream

print

public void print(long l)
Overrides:
print in class java.io.PrintStream

print

public void print(float f)
Overrides:
print in class java.io.PrintStream

print

public void print(double d)
Overrides:
print in class java.io.PrintStream

print

public void print(char[] s)
Overrides:
print in class java.io.PrintStream

print

public void print(java.lang.String s)
Overrides:
print in class java.io.PrintStream

print

public void print(java.lang.Object obj)
Overrides:
print in class java.io.PrintStream

println

public void println()
Overrides:
println in class java.io.PrintStream

println

public void println(boolean x)
Overrides:
println in class java.io.PrintStream

println

public void println(char x)
Overrides:
println in class java.io.PrintStream

println

public void println(int x)
Overrides:
println in class java.io.PrintStream

println

public void println(long x)
Overrides:
println in class java.io.PrintStream

println

public void println(float x)
Overrides:
println in class java.io.PrintStream

println

public void println(double x)
Overrides:
println in class java.io.PrintStream

println

public void println(char[] x)
Overrides:
println in class java.io.PrintStream

println

public void println(java.lang.String x)
Overrides:
println in class java.io.PrintStream

println

public void println(java.lang.Object x)
Overrides:
println in class java.io.PrintStream


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