java.lang.Object
- org.springframework.http.converter.AbstractHttpMessageConverter<T>
- - org.springframework.http.converter.xml.AbstractXmlHttpMessageConverter<T>
  - - org.springframework.http.converter.xml.AbstractJaxb2HttpMessageConverter<T>
    - - org.springframework.http.converter.xml.Jaxb2CollectionHttpMessageConverter<T>

类型参数:
T - the converted object type
所有已实现的接口:
GenericHttpMessageConverter<T>, HttpMessageConverter<T>
```
public class Jaxb2CollectionHttpMessageConverter<T extends Collection>
extends AbstractJaxb2HttpMessageConverter<T>
implements GenericHttpMessageConverter<T>
```
An HttpMessageConverter that can read XML collections using JAXB2.
This converter can read collections that contain classes annotated with XmlRootElement and XmlType. Note that this converter does not support writing.
从以下版本开始:
3.2
作者:
Arjen Poutsma, Rossen Stoyanchev

字段概要
- 从类继承的字段 org.springframework.http.converter.AbstractHttpMessageConverter
  logger

构造器概要
构造器
构造器说明
Jaxb2CollectionHttpMessageConverter()

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`boolean`	`canRead(Class<?> clazz, MediaType mediaType)`	Always returns `false` since Jaxb2CollectionHttpMessageConverter required generic type information in order to read a Collection.
`boolean`	`canRead(Type type, Class<?> contextClass, MediaType mediaType)`	Indicates whether the given type can be read by this converter.
`boolean`	`canWrite(Class<?> clazz, MediaType mediaType)`	Always returns `false` since Jaxb2CollectionHttpMessageConverter does not convert collections to XML.
`boolean`	`canWrite(Type type, Class<?> clazz, MediaType mediaType)`	Always returns `false` since Jaxb2CollectionHttpMessageConverter does not convert collections to XML.
`protected T`	`createCollection(Class<?> collectionClass)`	Create a Collection of the given type, with the given initial capacity (if supported by the Collection type).
`protected XMLInputFactory`	`createXmlInputFactory()`	Create an `XMLInputFactory` that this converter will use to create `XMLStreamReader` and `XMLEventReader` objects.
`T`	`read(Type type, Class<?> contextClass, HttpInputMessage inputMessage)`	Read an object of the given type form the given input message, and returns it.
`protected T`	`readFromSource(Class<? extends T> clazz, HttpHeaders headers, Source source)`	Abstract template method called from `AbstractHttpMessageConverter.read(Class, HttpInputMessage)`.
`protected boolean`	`supports(Class<?> clazz)`	Indicates whether the given class is supported by this converter.
`void`	`write(T t, Type type, MediaType contentType, HttpOutputMessage outputMessage)`	Write an given object to the given output message.
`protected void`	`writeToResult(T t, HttpHeaders headers, Result result)`	Abstract template method called from `AbstractXmlHttpMessageConverter.writeInternal(Object, HttpOutputMessage)`.

从类继承的方法 org.springframework.http.converter.xml.AbstractJaxb2HttpMessageConverter
createMarshaller, createUnmarshaller, customizeMarshaller, customizeUnmarshaller, getJaxbContext

从类继承的方法 org.springframework.http.converter.xml.AbstractXmlHttpMessageConverter
readInternal, transform, writeInternal

从类继承的方法 org.springframework.http.converter.AbstractHttpMessageConverter
addDefaultHeaders, canRead, canWrite, getContentLength, getDefaultCharset, getDefaultContentType, getSupportedMediaTypes, read, setDefaultCharset, setSupportedMediaTypes, write

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.springframework.http.converter.HttpMessageConverter
getSupportedMediaTypes, read, write

- 构造器详细资料
  - Jaxb2CollectionHttpMessageConverter
```
public Jaxb2CollectionHttpMessageConverter()
```
- 方法详细资料
  - canRead
```
public boolean canRead(Class<?> clazz,
                       @Nullable
                       MediaType mediaType)
```
    Always returns false since Jaxb2CollectionHttpMessageConverter required generic type information in order to read a Collection.
    指定者:
    canRead 在接口中 HttpMessageConverter<T extends Collection>
    覆盖:
    canRead 在类中 AbstractHttpMessageConverter<T extends Collection>
    参数:
    clazz - the class to test for readability
    mediaType - the media type to read (can be null if not specified); typically the value of a Content-Type header.
    返回:
    true if readable; false otherwise
  - canRead
```
public boolean canRead(Type type,
                       @Nullable
                       Class<?> contextClass,
                       @Nullable
                       MediaType mediaType)
```
    Indicates whether the given type can be read by this converter. This method should perform the same checks than HttpMessageConverter.canRead(Class, MediaType) with additional ones related to the generic type.
    Jaxb2CollectionHttpMessageConverter can read a generic Collection where the generic type is a JAXB type annotated with XmlRootElement or XmlType.
    指定者:
    canRead 在接口中 GenericHttpMessageConverter<T extends Collection>
    参数:
    type - the (potentially generic) type to test for readability
    contextClass - a context class for the target type, for example a class in which the target type appears in a method signature (can be null)
    mediaType - the media type to read, can be null if not specified. Typically the value of a Content-Type header.
    返回:
    true if readable; false otherwise
  - canWrite
```
public boolean canWrite(Class<?> clazz,
                        @Nullable
                        MediaType mediaType)
```
    Always returns false since Jaxb2CollectionHttpMessageConverter does not convert collections to XML.
    指定者:
    canWrite 在接口中 HttpMessageConverter<T extends Collection>
    覆盖:
    canWrite 在类中 AbstractHttpMessageConverter<T extends Collection>
    参数:
    clazz - the class to test for writability
    mediaType - the media type to write (can be null if not specified); typically the value of an Accept header.
    返回:
    true if writable; false otherwise
  - canWrite
```
public boolean canWrite(@Nullable
                        Type type,
                        @Nullable
                        Class<?> clazz,
                        @Nullable
                        MediaType mediaType)
```
    Always returns false since Jaxb2CollectionHttpMessageConverter does not convert collections to XML.
    指定者:
    canWrite 在接口中 GenericHttpMessageConverter<T extends Collection>
    参数:
    type - the (potentially generic) type to test for writability (can be null if not specified)
    clazz - the source object class to test for writability
    mediaType - the media type to write (can be null if not specified); typically the value of an Accept header.
    返回:
    true if writable; false otherwise
  - supports
```
protected boolean supports(Class<?> clazz)
```
    从类复制的说明: AbstractHttpMessageConverter
    Indicates whether the given class is supported by this converter.
    指定者:
    supports 在类中 AbstractHttpMessageConverter<T extends Collection>
    参数:
    clazz - the class to test for support
    返回:
    true if supported; false otherwise
  - readFromSource
```
protected T readFromSource(Class<? extends T> clazz,
                           HttpHeaders headers,
                           Source source)
                    throws Exception
```
    从类复制的说明: AbstractXmlHttpMessageConverter
    Abstract template method called from AbstractHttpMessageConverter.read(Class, HttpInputMessage).
    指定者:
    readFromSource 在类中 AbstractXmlHttpMessageConverter<T extends Collection>
    参数:
    clazz - the type of object to return
    headers - the HTTP input headers
    source - the HTTP input body
    返回:
    the converted object
    抛出:
    Exception - in case of I/O or conversion errors
  - read
```
public T read(Type type,
              @Nullable
              Class<?> contextClass,
              HttpInputMessage inputMessage)
       throws IOException,
              HttpMessageNotReadableException
```
    从接口复制的说明: GenericHttpMessageConverter
    Read an object of the given type form the given input message, and returns it.
    指定者:
    read 在接口中 GenericHttpMessageConverter<T extends Collection>
    参数:
    type - the (potentially generic) type of object to return. This type must have previously been passed to the canRead method of this interface, which must have returned true.
    contextClass - a context class for the target type, for example a class in which the target type appears in a method signature (can be null)
    inputMessage - the HTTP input message to read from
    返回:
    the converted object
    抛出:
    IOException - in case of I/O errors
    HttpMessageNotReadableException - in case of conversion errors
  - createCollection
```
protected T createCollection(Class<?> collectionClass)
```
    Create a Collection of the given type, with the given initial capacity (if supported by the Collection type).
    参数:
    collectionClass - the type of Collection to instantiate
    返回:
    the created Collection instance
  - write
```
public void write(T t,
                  @Nullable
                  Type type,
                  @Nullable
                  MediaType contentType,
                  HttpOutputMessage outputMessage)
           throws IOException,
                  HttpMessageNotWritableException
```
    从接口复制的说明: GenericHttpMessageConverter
    Write an given object to the given output message.
    指定者:
    write 在接口中 GenericHttpMessageConverter<T extends Collection>
    参数:
    t - the object to write to the output message. The type of this object must have previously been passed to the canWrite method of this interface, which must have returned true.
    type - the (potentially generic) type of object to write. This type must have previously been passed to the canWrite method of this interface, which must have returned true. Can be null if not specified.
    contentType - the content type to use when writing. May be null to indicate that the default content type of the converter must be used. If not null, this media type must have previously been passed to the canWrite method of this interface, which must have returned true.
    outputMessage - the message to write to
    抛出:
    IOException - in case of I/O errors
    HttpMessageNotWritableException - in case of conversion errors
  - writeToResult
```
protected void writeToResult(T t,
                             HttpHeaders headers,
                             Result result)
                      throws Exception
```
    从类复制的说明: AbstractXmlHttpMessageConverter
    Abstract template method called from AbstractXmlHttpMessageConverter.writeInternal(Object, HttpOutputMessage).
    指定者:
    writeToResult 在类中 AbstractXmlHttpMessageConverter<T extends Collection>
    参数:
    t - the object to write to the output message
    headers - the HTTP output headers
    result - the HTTP output body
    抛出:
    Exception - in case of I/O or conversion errors
  - createXmlInputFactory
```
protected XMLInputFactory createXmlInputFactory()
```
    Create an XMLInputFactory that this converter will use to create XMLStreamReader and XMLEventReader objects.
    Can be overridden in subclasses, adding further initialization of the factory. The resulting factory is cached, so this method will only be called once.
    另请参阅:
    StaxUtils.createDefensiveInputFactory()

类 Jaxb2CollectionHttpMessageConverter<T extends Collection>

字段概要

从类继承的字段 org.springframework.http.converter.AbstractHttpMessageConverter

构造器概要

方法概要

从类继承的方法 org.springframework.http.converter.xml.AbstractJaxb2HttpMessageConverter

从类继承的方法 org.springframework.http.converter.xml.AbstractXmlHttpMessageConverter

从类继承的方法 org.springframework.http.converter.AbstractHttpMessageConverter

从类继承的方法 java.lang.Object

从接口继承的方法 org.springframework.http.converter.HttpMessageConverter

构造器详细资料

Jaxb2CollectionHttpMessageConverter

方法详细资料

canRead

canRead

canWrite

canWrite

supports

readFromSource

read

createCollection

write

writeToResult

createXmlInputFactory