javax.servlet.ServletOutputStream Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2007, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package javax.servlet;
import java.io.OutputStream;
import java.io.IOException;
import java.io.CharConversionException;
import java.text.MessageFormat;
import java.util.ResourceBundle;
/**
* Provides an output stream for sending binary data to the client. A
* ServletOutputStream object is normally retrieved via the
* {@link ServletResponse#getOutputStream} method.
*
* This is an abstract class that the servlet container implements. Subclasses
* of this class must implement the java.io.OutputStream.write(int)
* method.
*
* @author Various
* @see ServletResponse
*/
public abstract class ServletOutputStream extends OutputStream
{
private static final String LSTRING_FILE = "javax.servlet.LocalStrings";
private static ResourceBundle lStrings = ResourceBundle.getBundle(LSTRING_FILE);
/**
* Does nothing, because this is an abstract class.
*/
protected ServletOutputStream()
{
}
/**
* Writes a String to the client, without a carriage
* return-line feed (CRLF) character at the end.
*
* @param s
* the String to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(String s) throws IOException
{
if (s == null)
s = "null";
int len = s.length();
for (int i = 0; i < len; i++)
{
char c = s.charAt(i);
//
// XXX NOTE: This is clearly incorrect for many strings,
// but is the only consistent approach within the current
// servlet framework. It must suffice until servlet output
// streams properly encode their output.
//
if ((c & 0xff00) != 0)
{ // high order byte must be zero
String errMsg = lStrings.getString("err.not_iso8859_1");
Object[] errArgs = new Object[1];
errArgs[0] = new Character(c);
errMsg = MessageFormat.format(errMsg, errArgs);
throw new CharConversionException(errMsg);
}
write(c);
}
}
/**
* Writes a boolean value to the client, with no carriage
* return-line feed (CRLF) character at the end.
*
* @param b
* the boolean value to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(boolean b) throws IOException
{
String msg;
if (b)
{
msg = lStrings.getString("value.true");
}
else
{
msg = lStrings.getString("value.false");
}
print(msg);
}
/**
* Writes a character to the client, with no carriage return-line feed (CRLF)
* at the end.
*
* @param c
* the character to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(char c) throws IOException
{
print(String.valueOf(c));
}
/**
* Writes an int to the client, with no carriage return-line feed (CRLF) at
* the end.
*
* @param i
* the int to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(int i) throws IOException
{
print(String.valueOf(i));
}
/**
* Writes a long value to the client, with no carriage
* return-line feed (CRLF) at the end.
*
* @param l
* the long value to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(long l) throws IOException
{
print(String.valueOf(l));
}
/**
* Writes a float value to the client, with no carriage
* return-line feed (CRLF) at the end.
*
* @param f
* the float value to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(float f) throws IOException
{
print(String.valueOf(f));
}
/**
* Writes a double value to the client, with no carriage
* return-line feed (CRLF) at the end.
*
* @param d
* the double value to send to the client
* @exception IOException
* if an input or output exception occurred
*/
public void print(double d) throws IOException
{
print(String.valueOf(d));
}
/**
* Writes a carriage return-line feed (CRLF) to the client.
*
* @exception IOException
* if an input or output exception occurred
*/
public void println() throws IOException
{
print("\r\n");
}
/**
* Writes a String to the client, followed by a carriage
* return-line feed (CRLF).
*
* @param s
* the String to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(String s) throws IOException
{
print(s);
println();
}
/**
* Writes a boolean value to the client, followed by a
* carriage return-line feed (CRLF).
*
* @param b
* the boolean value to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(boolean b) throws IOException
{
print(b);
println();
}
/**
* Writes a character to the client, followed by a carriage return-line feed
* (CRLF).
*
* @param c
* the character to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(char c) throws IOException
{
print(c);
println();
}
/**
* Writes an int to the client, followed by a carriage return-line feed
* (CRLF) character.
*
* @param i
* the int to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(int i) throws IOException
{
print(i);
println();
}
/**
* Writes a long value to the client, followed by a carriage
* return-line feed (CRLF).
*
* @param l
* the long value to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(long l) throws IOException
{
print(l);
println();
}
/**
* Writes a float value to the client, followed by a carriage
* return-line feed (CRLF).
*
* @param f
* the float value to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(float f) throws IOException
{
print(f);
println();
}
/**
* Writes a double value to the client, followed by a carriage
* return-line feed (CRLF).
*
* @param d
* the double value to write to the client
* @exception IOException
* if an input or output exception occurred
*/
public void println(double d) throws IOException
{
print(d);
println();
}
}