org.codehaus.jackson.impl

类 ByteSourceBootstrapper

java.lang.Object

org.codehaus.jackson.impl.ByteSourceBootstrapper

public final class ByteSourceBootstrapper
extends Object

This class is used to determine the encoding of byte stream that is to contain JSON content. Rules are fairly simple, and defined in JSON specification (RFC-4627 or newer), except for BOM handling, which is a property of underlying streams.

字段概要

字段

限定符和类型	字段和说明
protected boolean	_bigEndian
protected int	_bytesPerChar
protected IOContext	_context
protected InputStream	_in
protected byte[]	_inputBuffer
protected int	_inputProcessed Current number of input units (bytes or chars) that were processed in previous blocks, before contents of current input buffer.

构造器概要

构造器

构造器和说明
ByteSourceBootstrapper(IOContext ctxt, byte[] inputBuffer, int inputStart, int inputLen)
ByteSourceBootstrapper(IOContext ctxt, InputStream in)

方法概要

方法

限定符和类型	方法和说明
JsonParser	constructParser(int features, ObjectCodec codec, BytesToNameCanonicalizer rootByteSymbols, CharsToNameCanonicalizer rootCharSymbols)
Reader	constructReader()
JsonEncoding	detectEncoding() Method that should be called after constructing an instace.
protected boolean	ensureLoaded(int minimum)
static MatchStrength	hasJSONFormat(InputAccessor acc) Current implementation is not as thorough as other functionality (ByteSourceBootstrapper); supports UTF-8, for example.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

_context

protected final IOContext _context

_in

protected final InputStream _in

_inputBuffer

protected final byte[] _inputBuffer

_inputProcessed

protected int _inputProcessed

Current number of input units (bytes or chars) that were processed in previous blocks, before contents of current input buffer.

Note: includes possible BOMs, if those were part of the input.

_bigEndian

protected boolean _bigEndian

_bytesPerChar

protected int _bytesPerChar

构造器详细资料

ByteSourceBootstrapper

public ByteSourceBootstrapper(IOContext ctxt,
                      InputStream in)

ByteSourceBootstrapper

public ByteSourceBootstrapper(IOContext ctxt,
                      byte[] inputBuffer,
                      int inputStart,
                      int inputLen)

方法详细资料

detectEncoding

public JsonEncoding detectEncoding()
                            throws IOException,
                                   JsonParseException

Method that should be called after constructing an instace. It will figure out encoding that content uses, to allow for instantiating a proper scanner object.

抛出:

IOException

JsonParseException

constructReader

public Reader constructReader()
                       throws IOException

抛出:

IOException

constructParser

public JsonParser constructParser(int features,
                         ObjectCodec codec,
                         BytesToNameCanonicalizer rootByteSymbols,
                         CharsToNameCanonicalizer rootCharSymbols)
                           throws IOException,
                                  JsonParseException

抛出:

IOException

JsonParseException

hasJSONFormat

public static MatchStrength hasJSONFormat(InputAccessor acc)
                                   throws IOException

Current implementation is not as thorough as other functionality (ByteSourceBootstrapper); supports UTF-8, for example. But it should work, for now, and can be improved as necessary.

抛出:

IOException

从以下版本开始:

1.8

ensureLoaded

protected boolean ensureLoaded(int minimum)
                        throws IOException

抛出:

IOException