javax.servlet
クラス ServletInputStream

java.lang.Object
  |
  +--java.io.InputStream
        |
        +--javax.servlet.ServletInputStream

public abstract class ServletInputStream
extends java.io.InputStream

Provides an input stream for reading binary data from a client request, including an efficient readLine method for reading data one line at a time. With some protocols, such as HTTP POST and PUT, a ServletInputStream object can be used to read data sent from the client.

A ServletInputStream object is normally retrieved via the ServletRequest.getInputStream() method.

This is an abstract class that a servlet container implements. Subclasses of this class must implement the java.io.InputStream.read() method.

バージョン:
$Version$
作成者:
Various
関連項目:
ServletRequest

コンストラクタの概要
protected ServletInputStream()
          Does nothing, because this is an abstract class.
 
メソッドの概要
 int readLine(byte[] b, int off, int len)
          Reads the input stream, one line at a time.
 
クラス java.io.InputStream から継承したメソッド
available, close, mark, markSupported, read, read, read, reset, skip
 
クラス java.lang.Object から継承したメソッド
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

コンストラクタの詳細

ServletInputStream

protected ServletInputStream()
Does nothing, because this is an abstract class.

メソッドの詳細

readLine

public int readLine(byte[] b,
                    int off,
                    int len)
             throws java.io.IOException
Reads the input stream, one line at a time. Starting at an offset, reads bytes into an array, until it reads a certain number of bytes or reaches a newline character, which it reads into the array as well.

This method returns -1 if it reaches the end of the input stream before reading the maximum number of bytes.

パラメータ:
b - an array of bytes into which data is read
off - an integer specifying the character at which this method begins reading
len - an integer specifying the maximum number of bytes to read
戻り値:
an integer specifying the actual number of bytes read, or -1 if the end of the stream is reached
例外:
java.io.IOException - if an input or output exception has occurred


Copyright © 1999-2002 The Apache Software Foundation. All Rights Reserved.