pi3jspwriter.java

mini http server,可以集成嵌入到程序中,实现简单的web功能

		internalWrite(String.valueOf(d));
	}

    /**
     * Print an array of characters.  The characters are converted into bytes
     * according to the platform's default character encoding, and these bytes
     * are written in exactly the manner of the <code>{@link #write(int)}</code>
     * method.
     *
     * @param      s   The array of chars to be printed
     *
     * @throws  NullPointerException  If <code>s</code> is <code>null</code>
     * @throws	   java.io.IOException
     */

    public void print(char s[]) throws IOException {
		internalWrite(String.valueOf(s));
	}

    /**
     * Print a string.  If the argument is <code>null</code> then the string
     * <code>"null"</code> is printed.  Otherwise, the string's characters are
     * converted into bytes according to the platform's default character
     * encoding, and these bytes are written in exactly the manner of the
     * <code>{@link #write(int)}</code> method.
     *
     * @param      s   The <code>String</code> to be printed
     * @throws	   java.io.IOException
     */

    public void print(String s) throws IOException {
		internalWrite(String.valueOf(s));
	}

    /**
     * Print an object.  The string produced by the <code>{@link
     * java.lang.String#valueOf(Object)}</code> method is translated into bytes
     * according to the platform's default character encoding, and these bytes
     * are written in exactly the manner of the <code>{@link #write(int)}</code>
     * method.
     *
     * @param      obj   The <code>Object</code> to be printed
     * @see        java.lang.Object#toString()
     * @throws	   java.io.IOException
     */

    public void print(Object obj) throws IOException {
		internalWrite(String.valueOf(obj));
	}

    /**
     * Terminate the current line by writing the line separator string.  The
     * line separator string is defined by the system property
     * <code>line.separator</code>, and is not necessarily a single newline
     * character (<code>'\n'</code>).
     * @throws	   java.io.IOException
     */

    public void println() throws IOException {
		newLine();
	}

    /**
     * Print a boolean value and then terminate the line.  This method behaves
     * as though it invokes <code>{@link #print(boolean)}</code> and then
     * <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(boolean x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print a character and then terminate the line.  This method behaves as
     * though it invokes <code>{@link #print(char)}</code> and then <code>{@link
     * #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(char x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print an integer and then terminate the line.  This method behaves as
     * though it invokes <code>{@link #print(int)}</code> and then <code>{@link
     * #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(int x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print a long integer and then terminate the line.  This method behaves
     * as though it invokes <code>{@link #print(long)}</code> and then
     * <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(long x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print a floating-point number and then terminate the line.  This method
     * behaves as though it invokes <code>{@link #print(float)}</code> and then
     * <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(float x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print a double-precision floating-point number and then terminate the
     * line.  This method behaves as though it invokes <code>{@link
     * #print(double)}</code> and then <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(double x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print an array of characters and then terminate the line.  This method
     * behaves as though it invokes <code>{@link #print(char[])}</code> and then
     * <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(char x[]) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print a String and then terminate the line.  This method behaves as
     * though it invokes <code>{@link #print(String)}</code> and then
     * <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(String x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Print an Object and then terminate the line.  This method behaves as
     * though it invokes <code>{@link #print(Object)}</code> and then
     * <code>{@link #println()}</code>.
     * @throws	   java.io.IOException
     */

    public void println(Object x) throws IOException {
		internalWriteln(String.valueOf(x));
	}

    /**
     * Clear the contents of the buffer. If the buffer has been already
     * been flushed then the clear operation shall throw an IOException
     * to signal the fact that some data has already been irrevocably 
     * written to the client response stream.
     *
     * @throws IOException		If an I/O error occurs
     */

    public void clear() throws IOException {
	    if (os == null) return;

	    if (os.isFlushed()) {
		    IOException e = new IOException("Buffer already flushed");
			throw e;
		} else {
		    os.resetBuffer();
		}

	}

    /**
     * Clears the current contents of the buffer. Unlike clear(), this
     * method will not throw an IOException if the buffer has already been
     * flushed. It merely clears the current content of the buffer and
     * returns.
     *
     * @throws IOException		If an I/O error occurs
     */

    public void clearBuffer() throws IOException  {
		if (os != null) os.resetBuffer();
	}

    /**
     * Flush the stream.  If the stream has saved any characters from the
     * various write() methods in a buffer, write them immediately to their
     * intended destination.  Then, if that destination is another character or
     * byte stream, flush it.  Thus one flush() invocation will flush all the
     * buffers in a chain of Writers and OutputStreams.
     *
     * @exception  IOException  If an I/O error occurs
     */

    public void flush() throws IOException { pw.flush(); };

    /**
     * Close the stream, flushing it first.  Once a stream has been closed,
     * further write() or flush() invocations will cause an IOException to be
     * thrown.  Closing a previously-closed stream, however, has no effect.
     *
     * @exception  IOException  If an I/O error occurs
     */

    public void close() throws IOException { pw.flush(); pw.close(); }

    /**
     * @return the number of bytes unused in the buffer
     */

    public int getRemaining() {
		return (os != null) ? os.getBufferSize() - os.getCount() : 0;
	}

    /*
     * fields
     */
}