JsonFactory (Jackson JSON Processor)

java.lang.Object
- org.codehaus.jackson.JsonFactory

所有已实现的接口:

Versioned

直接已知子类:

MappingJsonFactory, SmileFactory
```
public class JsonFactory
extends Object
implements Versioned
```
The main factory class of Jackson package, used to configure and construct reader (aka parser, JsonParser) and writer (aka generator, JsonGenerator) instances.
Factory instances are thread-safe and reusable after configuration (if any). Typically applications and services use only a single globally shared factory instance, unless they need differently configured factories. Factory reuse is important if efficiency matters; most recycling of expensive construct is done on per-factory basis.
Creation of a factory instance is a light-weight operation, and since there is no need for pluggable alternative implementations (as there is no "standard" JSON processor API to implement), the default constructor is used for constructing factory instances.

作者:

Tatu Saloranta

字段概要

字段
限定符和类型	字段和说明
`protected CharacterEscapes`	`_characterEscapes` Definition of custom character escapes to use for generators created by this factory, if any.
`protected int`	`_generatorFeatures` Currently enabled generator features.
`protected InputDecorator`	`_inputDecorator` Optional helper object that may decorate input sources, to do additional processing on input during parsing.
`protected ObjectCodec`	`_objectCodec` Object that implements conversion functionality between Java objects and JSON content.
`protected OutputDecorator`	`_outputDecorator` Optional helper object that may decorate output object, to do additional processing on output during content generation.
`protected int`	`_parserFeatures` Currently enabled parser features.
`protected static ThreadLocal<SoftReference<BufferRecycler>>`	`_recyclerRef` This `ThreadLocal` contains a `SoftRerefence` to a `BufferRecycler` used to provide a low-cost buffer recycling between reader and writer instances.
`protected BytesToNameCanonicalizer`	`_rootByteSymbols` Alternative to the basic symbol table, some stream-based parsers use different name canonicalization method.
`protected CharsToNameCanonicalizer`	`_rootCharSymbols` Each factory comes equipped with a shared root symbol table.
`static String`	`FORMAT_NAME_JSON` Name used to identify JSON format (and returned by `getFormatName()`

构造器概要

构造器
构造器和说明

JsonFactory()
Default constructor used to create factory instances.

JsonFactory(ObjectCodec oc)

构造器
构造器和说明
`JsonFactory()` Default constructor used to create factory instances.
`JsonFactory(ObjectCodec oc)`

方法概要

方法
限定符和类型	方法和说明
`protected IOContext`	`_createContext(Object srcRef, boolean resourceManaged)` Overridable factory method that actually instantiates desired context object.
`protected JsonGenerator`	`_createJsonGenerator(Writer out, IOContext ctxt)` Overridable factory method that actually instantiates generator for given `Writer` and context object.
`protected JsonParser`	`_createJsonParser(byte[] data, int offset, int len, IOContext ctxt)` Overridable factory method that actually instantiates parser using given `Reader` object for reading content passed as raw byte array.
`protected JsonParser`	`_createJsonParser(InputStream in, IOContext ctxt)` Overridable factory method that actually instantiates desired parser given `InputStream` and context object.
`protected JsonParser`	`_createJsonParser(Reader r, IOContext ctxt)` Overridable factory method that actually instantiates parser using given `Reader` object for reading content.
`protected JsonGenerator`	`_createUTF8JsonGenerator(OutputStream out, IOContext ctxt)` Overridable factory method that actually instantiates generator for given `OutputStream` and context object, using UTF-8 encoding.
`protected Writer`	`_createWriter(OutputStream out, JsonEncoding enc, IOContext ctxt)`
`BufferRecycler`	`_getBufferRecycler()` Method used by factory to create buffer recycler instances for parsers and generators.
`protected InputStream`	`_optimizedStreamFromURL(URL url)` Helper methods used for constructing an optimal stream for parsers to use, when input is to be read from an URL.
`JsonFactory`	`configure(JsonGenerator.Feature f, boolean state)` Method for enabling or disabling specified generator feature (check `JsonGenerator.Feature` for list of features)
`JsonFactory`	`configure(JsonParser.Feature f, boolean state)` Method for enabling or disabling specified parser feature (check `JsonParser.Feature` for list of features)
`JsonGenerator`	`createJsonGenerator(File f, JsonEncoding enc)` Method for constructing JSON generator for writing JSON content to specified file, overwriting contents it might have (or creating it if such file does not yet exist).
`JsonGenerator`	`createJsonGenerator(OutputStream out)` Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
`JsonGenerator`	`createJsonGenerator(OutputStream out, JsonEncoding enc)` Method for constructing JSON generator for writing JSON content using specified output stream.
`JsonGenerator`	`createJsonGenerator(Writer out)` Method for constructing JSON generator for writing JSON content using specified Writer.
`JsonParser`	`createJsonParser(byte[] data)` Method for constructing parser for parsing the contents of given byte array.
`JsonParser`	`createJsonParser(byte[] data, int offset, int len)` Method for constructing parser for parsing the contents of given byte array.
`JsonParser`	`createJsonParser(File f)` Method for constructing JSON parser instance to parse contents of specified file.
`JsonParser`	`createJsonParser(InputStream in)` Method for constructing JSON parser instance to parse the contents accessed via specified input stream.
`JsonParser`	`createJsonParser(Reader r)` Method for constructing parser for parsing the contents accessed via specified Reader.
`JsonParser`	`createJsonParser(String content)` Method for constructing parser for parsing contens of given String.
`JsonParser`	`createJsonParser(URL url)` Method for constructing JSON parser instance to parse contents of resource reference by given URL.
`JsonFactory`	`disable(JsonGenerator.Feature f)` Method for disabling specified generator feature (check `JsonGenerator.Feature` for list of features)
`JsonFactory`	`disable(JsonParser.Feature f)` Method for disabling specified parser features (check `JsonParser.Feature` for list of features)
`void`	`disableGeneratorFeature(JsonGenerator.Feature f)` 已过时。 Use `disable(JsonGenerator.Feature)` instead
`void`	`disableParserFeature(JsonParser.Feature f)` 已过时。 Use `disable(JsonParser.Feature)` instead
`JsonFactory`	`enable(JsonGenerator.Feature f)` Method for enabling specified generator features (check `JsonGenerator.Feature` for list of features)
`JsonFactory`	`enable(JsonParser.Feature f)` Method for enabling specified parser feature (check `JsonParser.Feature` for list of features)
`void`	`enableGeneratorFeature(JsonGenerator.Feature f)` 已过时。 Use `enable(JsonGenerator.Feature)` instead
`void`	`enableParserFeature(JsonParser.Feature f)` 已过时。 Use `enable(JsonParser.Feature)` instead
`CharacterEscapes`	`getCharacterEscapes()` Method for accessing custom escapes factory uses for `JsonGenerator`s it creates.
`ObjectCodec`	`getCodec()`
`String`	`getFormatName()` Method that returns short textual id identifying format this factory supports.
`InputDecorator`	`getInputDecorator()` Method for getting currently configured input decorator (if any; there is no default decorator).
`OutputDecorator`	`getOutputDecorator()` Method for getting currently configured output decorator (if any; there is no default decorator).
`MatchStrength`	`hasFormat(InputAccessor acc)`
`protected MatchStrength`	`hasJSONFormat(InputAccessor acc)`
`boolean`	`isEnabled(JsonGenerator.Feature f)` Check whether specified generator feature is enabled.
`boolean`	`isEnabled(JsonParser.Feature f)` Checked whether specified parser feature is enabled.
`boolean`	`isGeneratorFeatureEnabled(JsonGenerator.Feature f)` 已过时。 Use `isEnabled(JsonGenerator.Feature)` instead
`boolean`	`isParserFeatureEnabled(JsonParser.Feature f)` 已过时。 Use `isEnabled(JsonParser.Feature)` instead
`JsonFactory`	`setCharacterEscapes(CharacterEscapes esc)` Method for defining custom escapes factory uses for `JsonGenerator`s it creates.
`JsonFactory`	`setCodec(ObjectCodec oc)` Method for associating a `ObjectCodec` (typically a `ObjectMapper`) with this factory (and more importantly, parsers and generators it constructs).
`void`	`setGeneratorFeature(JsonGenerator.Feature f, boolean state)` 已过时。 Use `configure(JsonGenerator.Feature, boolean)` instead
`JsonFactory`	`setInputDecorator(InputDecorator d)` Method for overriding currently configured input decorator
`JsonFactory`	`setOutputDecorator(OutputDecorator d)` Method for overriding currently configured output decorator
`void`	`setParserFeature(JsonParser.Feature f, boolean state)` 已过时。 Use `configure(JsonParser.Feature, boolean)` instead
`Version`	`version()` Method called to detect version of the component that implements this interface; returned version should never be null, but may return specific "not available" instance (see `Version` for details).

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
  - FORMAT_NAME_JSON
```
public static final String FORMAT_NAME_JSON
```
    Name used to identify JSON format (and returned by getFormatName()
    
    另请参阅:
    常量字段值
  - _recyclerRef
```
protected static final ThreadLocal<SoftReference<BufferRecycler>> _recyclerRef
```
    This ThreadLocal contains a SoftRerefence to a BufferRecycler used to provide a low-cost buffer recycling between reader and writer instances.
  - _rootCharSymbols
```
protected CharsToNameCanonicalizer _rootCharSymbols
```
    Each factory comes equipped with a shared root symbol table. It should not be linked back to the original blueprint, to avoid contents from leaking between factories.
  - _rootByteSymbols
```
protected BytesToNameCanonicalizer _rootByteSymbols
```
    Alternative to the basic symbol table, some stream-based parsers use different name canonicalization method.
    TODO: should clean up this; looks messy having 2 alternatives with not very clear differences.
  - _objectCodec
```
protected ObjectCodec _objectCodec
```
    Object that implements conversion functionality between Java objects and JSON content. For base JsonFactory implementation usually not set by default, but can be explicitly set. Sub-classes (like @link org.codehaus.jackson.map.MappingJsonFactory} usually provide an implementation.
  - _parserFeatures
```
protected int _parserFeatures
```
    Currently enabled parser features.
  - _generatorFeatures
```
protected int _generatorFeatures
```
    Currently enabled generator features.
  - _characterEscapes
```
protected CharacterEscapes _characterEscapes
```
    Definition of custom character escapes to use for generators created by this factory, if any. If null, standard data format specific escapes are used.
    
    从以下版本开始:
    
    1.8
  - _inputDecorator
```
protected InputDecorator _inputDecorator
```
    Optional helper object that may decorate input sources, to do additional processing on input during parsing.
    
    从以下版本开始:
    
    1.8
  - _outputDecorator
```
protected OutputDecorator _outputDecorator
```
    Optional helper object that may decorate output object, to do additional processing on output during content generation.
    
    从以下版本开始:
    
    1.8
- 构造器详细资料
  - JsonFactory
```
public JsonFactory()
```
    Default constructor used to create factory instances. Creation of a factory instance is a light-weight operation, but it is still a good idea to reuse limited number of factory instances (and quite often just a single instance): factories are used as context for storing some reused processing objects (such as symbol tables parsers use) and this reuse only works within context of a single factory instance.
  - JsonFactory
```
public JsonFactory(ObjectCodec oc)
```
- 方法详细资料
  - getFormatName
```
public String getFormatName()
```
    Method that returns short textual id identifying format this factory supports.
    Note: sub-classes should override this method; default implementation will return null for all sub-classes
    
    从以下版本开始:
    
    1.8
  - hasFormat
```
public MatchStrength hasFormat(InputAccessor acc)
                        throws IOException
```
    抛出:
    
    IOException
  - hasJSONFormat
```
protected MatchStrength hasJSONFormat(InputAccessor acc)
                               throws IOException
```
    抛出:
    
    IOException
  - version
```
public Version version()
```
    从接口复制的说明: Versioned
    
    Method called to detect version of the component that implements this interface; returned version should never be null, but may return specific "not available" instance (see Version for details).
    
    指定者:
    
    version 在接口中 Versioned
  - configure
```
public final JsonFactory configure(JsonParser.Feature f,
                    boolean state)
```
    Method for enabling or disabling specified parser feature (check JsonParser.Feature for list of features)
    
    从以下版本开始:
    
    1.2
  - enable
```
public JsonFactory enable(JsonParser.Feature f)
```
    Method for enabling specified parser feature (check JsonParser.Feature for list of features)
    
    从以下版本开始:
    
    1.2
  - disable
```
public JsonFactory disable(JsonParser.Feature f)
```
    Method for disabling specified parser features (check JsonParser.Feature for list of features)
    
    从以下版本开始:
    
    1.2
  - isEnabled
```
public final boolean isEnabled(JsonParser.Feature f)
```
    Checked whether specified parser feature is enabled.
    
    从以下版本开始:
    
    1.2
  - enableParserFeature
```
public final void enableParserFeature(JsonParser.Feature f)
```
    已过时。 Use enable(JsonParser.Feature) instead
  - disableParserFeature
```
public final void disableParserFeature(JsonParser.Feature f)
```
    已过时。 Use disable(JsonParser.Feature) instead
  - setParserFeature
```
public final void setParserFeature(JsonParser.Feature f,
                    boolean state)
```
    已过时。 Use configure(JsonParser.Feature, boolean) instead
  - isParserFeatureEnabled
```
public final boolean isParserFeatureEnabled(JsonParser.Feature f)
```
    已过时。 Use isEnabled(JsonParser.Feature) instead
  - getInputDecorator
```
public InputDecorator getInputDecorator()
```
    Method for getting currently configured input decorator (if any; there is no default decorator).
    
    从以下版本开始:
    
    1.8
  - setInputDecorator
```
public JsonFactory setInputDecorator(InputDecorator d)
```
    Method for overriding currently configured input decorator
    
    从以下版本开始:
    
    1.8
  - configure
```
public final JsonFactory configure(JsonGenerator.Feature f,
                    boolean state)
```
    Method for enabling or disabling specified generator feature (check JsonGenerator.Feature for list of features)
    
    从以下版本开始:
    
    1.2
  - enable
```
public JsonFactory enable(JsonGenerator.Feature f)
```
    Method for enabling specified generator features (check JsonGenerator.Feature for list of features)
    
    从以下版本开始:
    
    1.2
  - disable
```
public JsonFactory disable(JsonGenerator.Feature f)
```
    Method for disabling specified generator feature (check JsonGenerator.Feature for list of features)
    
    从以下版本开始:
    
    1.2
  - isEnabled
```
public final boolean isEnabled(JsonGenerator.Feature f)
```
    Check whether specified generator feature is enabled.
    
    从以下版本开始:
    
    1.2
  - enableGeneratorFeature
```
@Deprecated
public final void enableGeneratorFeature(JsonGenerator.Feature f)
```
    已过时。 Use enable(JsonGenerator.Feature) instead
  - disableGeneratorFeature
```
@Deprecated
public final void disableGeneratorFeature(JsonGenerator.Feature f)
```
    已过时。 Use disable(JsonGenerator.Feature) instead
  - setGeneratorFeature
```
@Deprecated
public final void setGeneratorFeature(JsonGenerator.Feature f,
                                  boolean state)
```
    已过时。 Use configure(JsonGenerator.Feature, boolean) instead
  - isGeneratorFeatureEnabled
```
@Deprecated
public final boolean isGeneratorFeatureEnabled(JsonGenerator.Feature f)
```
    已过时。 Use isEnabled(JsonGenerator.Feature) instead
  - getCharacterEscapes
```
public CharacterEscapes getCharacterEscapes()
```
    Method for accessing custom escapes factory uses for JsonGenerators it creates.
    
    从以下版本开始:
    
    1.8
  - setCharacterEscapes
```
public JsonFactory setCharacterEscapes(CharacterEscapes esc)
```
    Method for defining custom escapes factory uses for JsonGenerators it creates.
    
    从以下版本开始:
    
    1.8
  - getOutputDecorator
```
public OutputDecorator getOutputDecorator()
```
    Method for getting currently configured output decorator (if any; there is no default decorator).
    
    从以下版本开始:
    
    1.8
  - setOutputDecorator
```
public JsonFactory setOutputDecorator(OutputDecorator d)
```
    Method for overriding currently configured output decorator
    
    从以下版本开始:
    
    1.8
  - setCodec
```
public JsonFactory setCodec(ObjectCodec oc)
```
    Method for associating a ObjectCodec (typically a ObjectMapper) with this factory (and more importantly, parsers and generators it constructs). This is needed to use data-binding methods of JsonParser and JsonGenerator instances.
  - getCodec
```
public ObjectCodec getCodec()
```
  - createJsonParser
```
public JsonParser createJsonParser(File f)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing JSON parser instance to parse contents of specified file. Encoding is auto-detected from contents according to JSON specification recommended mechanism.
    Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.
    
    参数:
    f - File that contains JSON content to parse
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
public JsonParser createJsonParser(URL url)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing JSON parser instance to parse contents of resource reference by given URL. Encoding is auto-detected from contents according to JSON specification recommended mechanism.
    Underlying input stream (needed for reading contents) will be owned (and managed, i.e. closed as need be) by the parser, since caller has no access to it.
    
    参数:
    url - URL pointing to resource that contains JSON content to parse
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
public JsonParser createJsonParser(InputStream in)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing JSON parser instance to parse the contents accessed via specified input stream.
    The input stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.
    Note: no encoding argument is taken since it can always be auto-detected as suggested by Json RFC.
    
    参数:
    in - InputStream to use for reading JSON content to parse
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
public JsonParser createJsonParser(Reader r)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing parser for parsing the contents accessed via specified Reader.
    The read stream will not be owned by the parser, it will still be managed (i.e. closed if end-of-stream is reacher, or parser close method called) if (and only if) JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled.
    
    参数:
    r - Reader to use for reading JSON content to parse
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
public JsonParser createJsonParser(byte[] data)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing parser for parsing the contents of given byte array.
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
public JsonParser createJsonParser(byte[] data,
                          int offset,
                          int len)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing parser for parsing the contents of given byte array.
    
    参数:
    data - Buffer that contains data to parse
    offset - Offset of the first data byte within buffer
    len - Length of contents to parse within buffer
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonParser
```
public JsonParser createJsonParser(String content)
                            throws IOException,
                                   JsonParseException
```
    Method for constructing parser for parsing contens of given String.
    
    抛出:
    
    IOException
    
    JsonParseException
  - createJsonGenerator
```
public JsonGenerator createJsonGenerator(OutputStream out,
                                JsonEncoding enc)
                                  throws IOException
```
    Method for constructing JSON generator for writing JSON content using specified output stream. Encoding to use must be specified, and needs to be one of available types (as per JSON specification).
    Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the output stream when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly if this is the case.
    Note: there are formats that use fixed encoding (like most binary data formats) and that ignore passed in encoding.
    
    参数:
    out - OutputStream to use for writing JSON content
    enc - Character encoding to use
    
    抛出:
    
    IOException
  - createJsonGenerator
```
public JsonGenerator createJsonGenerator(Writer out)
                                  throws IOException
```
    Method for constructing JSON generator for writing JSON content using specified Writer.
    Underlying stream is NOT owned by the generator constructed, so that generator will NOT close the Reader when JsonGenerator.close() is called (unless auto-closing feature, JsonGenerator.Feature.AUTO_CLOSE_TARGET is enabled). Using application needs to close it explicitly.
    
    参数:
    out - Writer to use for writing JSON content
    
    抛出:
    
    IOException
  - createJsonGenerator
```
public JsonGenerator createJsonGenerator(OutputStream out)
                                  throws IOException
```
    Convenience method for constructing generator that uses default encoding of the format (UTF-8 for JSON and most other data formats).
    Note: there are formats that use fixed encoding (like most binary data formats).
    
    抛出:
    
    IOException
    从以下版本开始:
    
    1.8
  - createJsonGenerator
```
public JsonGenerator createJsonGenerator(File f,
                                JsonEncoding enc)
                                  throws IOException
```
    Method for constructing JSON generator for writing JSON content to specified file, overwriting contents it might have (or creating it if such file does not yet exist). Encoding to use must be specified, and needs to be one of available types (as per JSON specification).
    Underlying stream is owned by the generator constructed, i.e. generator will handle closing of file when JsonGenerator.close() is called.
    
    参数:
    f - File to write contents to
    enc - Character encoding to use
    
    抛出:
    
    IOException
  - _createJsonParser
```
protected JsonParser _createJsonParser(InputStream in,
                           IOContext ctxt)
                                throws IOException,
                                       JsonParseException
```
    Overridable factory method that actually instantiates desired parser given InputStream and context object.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    抛出:
    
    IOException
    
    JsonParseException
  - _createJsonParser
```
protected JsonParser _createJsonParser(Reader r,
                           IOContext ctxt)
                                throws IOException,
                                       JsonParseException
```
    Overridable factory method that actually instantiates parser using given Reader object for reading content.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    抛出:
    
    IOException
    
    JsonParseException
  - _createJsonParser
```
protected JsonParser _createJsonParser(byte[] data,
                           int offset,
                           int len,
                           IOContext ctxt)
                                throws IOException,
                                       JsonParseException
```
    Overridable factory method that actually instantiates parser using given Reader object for reading content passed as raw byte array.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    抛出:
    
    IOException
    
    JsonParseException
  - _createJsonGenerator
```
protected JsonGenerator _createJsonGenerator(Writer out,
                                 IOContext ctxt)
                                      throws IOException
```
    Overridable factory method that actually instantiates generator for given Writer and context object.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    抛出:
    
    IOException
  - _createUTF8JsonGenerator
```
protected JsonGenerator _createUTF8JsonGenerator(OutputStream out,
                                     IOContext ctxt)
                                          throws IOException
```
    Overridable factory method that actually instantiates generator for given OutputStream and context object, using UTF-8 encoding.
    This method is specifically designed to remain compatible between minor versions so that sub-classes can count on it being called as expected. That is, it is part of official interface from sub-class perspective, although not a public method available to users of factory implementations.
    
    抛出:
    
    IOException
  - _createWriter
```
protected Writer _createWriter(OutputStream out,
                   JsonEncoding enc,
                   IOContext ctxt)
                        throws IOException
```
    抛出:
    
    IOException
  - _createContext
```
protected IOContext _createContext(Object srcRef,
                       boolean resourceManaged)
```
    Overridable factory method that actually instantiates desired context object.
  - _getBufferRecycler
```
public BufferRecycler _getBufferRecycler()
```
    Method used by factory to create buffer recycler instances for parsers and generators.
    Note: only public to give access for ObjectMapper
  - _optimizedStreamFromURL
```
protected InputStream _optimizedStreamFromURL(URL url)
                                       throws IOException
```
    Helper methods used for constructing an optimal stream for parsers to use, when input is to be read from an URL. This helps when reading file content via URL.
    
    抛出:
    
    IOException

类 JsonFactory

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

FORMAT_NAME_JSON

_recyclerRef

_rootCharSymbols

_rootByteSymbols

_objectCodec

_parserFeatures

_generatorFeatures

_characterEscapes

_inputDecorator

_outputDecorator

构造器详细资料

JsonFactory

JsonFactory

方法详细资料

getFormatName

hasFormat

hasJSONFormat

version

configure

enable

disable

isEnabled

enableParserFeature

disableParserFeature

setParserFeature

isParserFeatureEnabled

getInputDecorator

setInputDecorator

configure

enable

disable

isEnabled

enableGeneratorFeature

disableGeneratorFeature

setGeneratorFeature

isGeneratorFeatureEnabled

getCharacterEscapes

setCharacterEscapes

getOutputDecorator

setOutputDecorator

setCodec

getCodec

createJsonParser

createJsonParser

createJsonParser

createJsonParser

createJsonParser

createJsonParser

createJsonParser

createJsonGenerator

createJsonGenerator

createJsonGenerator

createJsonGenerator

_createJsonParser

_createJsonParser

_createJsonParser

_createJsonGenerator

_createUTF8JsonGenerator

_createWriter

_createContext

_getBufferRecycler

_optimizedStreamFromURL