examples.servlets.wrapper
Class CustomOutputStream

java.lang.Object
  |
  +--java.io.OutputStream
        |
        +--javax.servlet.ServletOutputStream
              |
              +--examples.servlets.wrapper.CustomOutputStream

public class CustomOutputStream

extends javax.servlet.ServletOutputStream

CustomOutputStream is a user defined custom OutputStream that substitutes the replace value for the key value in all output.

Author:

Copyright (c) 2002 by BEA Systems, Inc. All Rights Reserved.

Constructor Summary

CustomOutputStream(java.io.OutputStream os, java.lang.String ks, java.lang.String rs)

Method Summary

void	close() Implement the close method from java.io.OutputStream.
void	flush() Implement the flush method from java.io.OutputStream.
void	processStream() Writes out the substituted output.
byte[]	substitute(byte[] origStringBytes) Replaces all instances of the keyString with replaceString in the passed in byte array, then returns a byte array of the substituted output
void	write(int b) Writes the output.

Methods inherited from class javax.servlet.ServletOutputStream

, print, print, print, print, print, print, print, println, println, println, println, println, println, println, println

Methods inherited from class java.io.OutputStream

write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

CustomOutputStream

public CustomOutputStream(java.io.OutputStream os,
                          java.lang.String ks,
                          java.lang.String rs)

Method Detail

close

public void close()
           throws java.io.IOException

Implement the close method from java.io.OutputStream. Here, we make sure to call the processStream method first.

Overrides:

close in class java.io.OutputStream

flush

public void flush()
           throws java.io.IOException

Implement the flush method from java.io.OutputStream. Empties the baoStream.

Overrides:

flush in class java.io.OutputStream

processStream

public void processStream()
                   throws java.io.IOException

Writes out the substituted output. Calls the substitute method to do actual substitution.

substitute

public byte[] substitute(byte[] origStringBytes)

Replaces all instances of the keyString with replaceString in the passed in byte array, then returns a byte array of the substituted output

write

public void write(int b)
           throws java.io.IOException

Writes the output. Must be implemented in a class extending ServletOutputStream

Overrides:

write in class java.io.OutputStream