public abstract class LimitedInputStream extends FilterInputStream implements Closeable
in| 构造器和说明 |
|---|
LimitedInputStream(InputStream inputStream,
long pSizeMax)
Creates a new instance.
|
| 限定符和类型 | 方法和说明 |
|---|---|
void |
close()
Closes this input stream and releases any system resources
associated with the stream.
|
boolean |
isClosed()
Returns, whether this stream is already closed.
|
protected abstract void |
raiseError(long pSizeMax,
long pCount)
Called to indicate, that the input streams limit has been exceeded.
|
int |
read()
Reads the next byte of data from this input stream.
|
int |
read(byte[] b,
int off,
int len)
Reads up to
len bytes of data from this input stream
into an array of bytes. |
available, mark, markSupported, read, reset, skippublic LimitedInputStream(InputStream inputStream, long pSizeMax)
inputStream - The input stream, which shall be limited.pSizeMax - The limit; no more than this number of bytes shall be returned by the source stream.protected abstract void raiseError(long pSizeMax,
long pCount)
throws IOException
pSizeMax - The input streams limit, in bytes.pCount - The actual number of bytes.IOException - The called method is expected
to raise an IOException.public int read()
throws IOException
int in the range
0 to 255. If no byte is available
because the end of the stream has been reached, the value
-1 is returned. This method blocks until input data
is available, the end of the stream is detected, or an exception
is thrown.
This method simply performs in.read() and returns the result.
read 在类中 FilterInputStream-1 if the end of the
stream is reached.IOException - if an I/O error occurs.FilterInputStream.inpublic int read(byte[] b,
int off,
int len)
throws IOException
len bytes of data from this input stream
into an array of bytes. If len is not zero, the method
blocks until some input is available; otherwise, no
bytes are read and 0 is returned.
This method simply performs in.read(b, off, len)
and returns the result.
read 在类中 FilterInputStreamb - the buffer into which the data is read.off - The start offset in the destination array
b.len - the maximum number of bytes read.-1 if there is no more data because the end of
the stream has been reached.NullPointerException - If b is null.IndexOutOfBoundsException - If off is negative,
len is negative, or len is greater than
b.length - offIOException - if an I/O error occurs.FilterInputStream.inpublic boolean isClosed()
throws IOException
IOException - An I/O error occurred.public void close()
throws IOException
in.close().close 在接口中 Closeableclose 在接口中 AutoCloseableclose 在类中 FilterInputStreamIOException - if an I/O error occurs.FilterInputStream.in