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Class javax.servlet.ServletInputStream
java.lang.Object
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+----java.io.InputStream
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+----javax.servlet.ServletInputStream
- public abstract class ServletInputStream
- extends InputStream
An input stream for reading servlet requests, it provides an
efficient readLine method. This is an abstract class, to be
implemented by a network services writer. For some application
protocols, such as the HTTP POST and PUT methods, servlet writers
use the input stream to get data from clients. They access the
input stream via the ServletRequest's getInputStream method,
available from within the servlet's service method. Subclasses of
ServletInputStream must provide an implementation of the read()
method.
- See Also:
- read
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ServletInputStream()
- The default constructor does no work.
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readLine(byte[], int, int)
- Starting at the specified offset, reads into the given array of
bytes until all requested bytes have been read or a '\n' is
encountered, in which case the '\n' is read into the array as well.
ServletInputStream
protected ServletInputStream()
- The default constructor does no work.
readLine
public int readLine(byte b[],
int off,
int len) throws IOException
- Starting at the specified offset, reads into the given array of
bytes until all requested bytes have been read or a '\n' is
encountered, in which case the '\n' is read into the array as well.
- Parameters:
- b - the buffer into which the data is read
- off - the start offset of the data
- len - the maximum number of bytes to read
- Returns:
- the actual number of bytes read, or -1 if the end of the
stream is reached
- Throws: IOException
- if an I/O error has occurred
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