ServletOutputStream.java
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上传日期:2013-06-23
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文件大小:11k
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电子政务应用
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MultiPlatform
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution, if
- * any, must include the following acknowlegement:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowlegement may appear in the software itself,
- * if and wherever such third-party acknowlegements normally appear.
- *
- * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
- * Foundation" must not be used to endorse or promote products derived
- * from this software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- *
- * ====================================================================
- *
- * This source code implements specifications defined by the Java
- * Community Process. In order to remain compliant with the specification
- * DO NOT add / change / or delete method signatures!
- */
- 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 <code>ServletOutputStream</code> object is normally retrieved
- * via the {@link ServletResponse#getOutputStream} method.
- *
- * <p>This is an abstract class that the servlet container implements.
- * Subclasses of this class
- * must implement the <code>java.io.OutputStream.write(int)</code>
- * method.
- *
- *
- * @author Various
- * @version $Version$
- *
- * @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 <code>String</code> to the client,
- * without a carriage return-line feed (CRLF)
- * character at the end.
- *
- *
- * @param s the <code>String</code 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 <code>boolean</code> value to the client,
- * with no carriage return-line feed (CRLF)
- * character at the end.
- *
- * @param b the <code>boolean</code> 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 <code>long</code> value to the client,
- * with no carriage return-line feed (CRLF) at the end.
- *
- * @param l the <code>long</code> 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 <code>float</code> value to the client,
- * with no carriage return-line feed (CRLF) at the end.
- *
- * @param f the <code>float</code> 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 <code>double</code> value to the client,
- * with no carriage return-line feed (CRLF) at the end.
- *
- * @param d the <code>double</code> 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("rn");
- }
- /**
- * Writes a <code>String</code> to the client,
- * followed by a carriage return-line feed (CRLF).
- *
- *
- * @param s the </code>String</code> 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 <code>boolean</code> value to the client,
- * followed by a
- * carriage return-line feed (CRLF).
- *
- *
- * @param b the <code>boolean</code> 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 <code>long</code> value to the client, followed by a
- * carriage return-line feed (CRLF).
- *
- *
- * @param l the <code>long</code> 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 <code>float</code> value to the client,
- * followed by a carriage return-line feed (CRLF).
- *
- * @param f the <code>float</code> 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 <code>double</code> value to the client,
- * followed by a carriage return-line feed (CRLF).
- *
- *
- * @param d the <code>double</code> 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();
- }
- }