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## org.springframework.http.converter
Class ByteArrayHttpMessageConverter

    java.lang.Object
      org.springframework.http.converter.AbstractHttpMessageConverter<byte[]>
          org.springframework.http.converter.ByteArrayHttpMessageConverter

All Implemented Interfaces:
  HttpMessageConverter<byte[]>

    public class ByteArrayHttpMessageConverter

extends AbstractHttpMessageConverter<byte[]>

Implementation of `HttpMessageConverter` that can read and write byte arrays.

By default, this converter supports all media types (`*/*`), and writes with a `Content-Type` of `application/octet-stream`. This can be overridden by setting the `supportedMediaTypes` property.

Since:
  3.0
Author:
  Arjen Poutsma

Field Summary

Fields inherited from class org.springframework.http.converter.AbstractHttpMessageConverter
`logger`

Constructor Summary
`ByteArrayHttpMessageConverter()` Creates a new instance of the `ByteArrayHttpMessageConverter`.

Method Summary
`protected Long` | `getContentLength(byte[] bytes, MediaType contentType)` Returns the content length for the given type.
`byte[]` | `readInternal(Class clazz, HttpInputMessage inputMessage)` Abstract template method that reads the actualy object.
`boolean` | `supports(Class<?> clazz)` Indicates whether the given class is supported by this converter.
`protected void` | `writeInternal(byte[] bytes, HttpOutputMessage outputMessage)` Abstract template method that writes the actual body.

Methods inherited from class org.springframework.http.converter.AbstractHttpMessageConverter
`canRead, canRead, canWrite, canWrite, getDefaultContentType, getSupportedMediaTypes, read, setSupportedMediaTypes, write`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### ByteArrayHttpMessageConverter

    public ByteArrayHttpMessageConverter()

  Creates a new instance of the `ByteArrayHttpMessageConverter`.

Method Detail

### supports

    public boolean supports(Class<?> clazz)

  Description copied from class: `AbstractHttpMessageConverter`
  Indicates whether the given class is supported by this converter.

  Specified by:
    `supports` in class `AbstractHttpMessageConverter<byte[]>`
  Parameters:
    `clazz` - the class to test for support
  Returns:
    `true` if supported; `false` otherwise

### readInternal

    public byte[] readInternal(Class clazz,
                               HttpInputMessage inputMessage)
                        throws IOException

  Description copied from class: `AbstractHttpMessageConverter`
  Abstract template method that reads the actualy object. Invoked from `AbstractHttpMessageConverter.read(java.lang.Class, org.springframework.http.HttpInputMessage)`.

  Specified by:
    `readInternal` in class `AbstractHttpMessageConverter<byte[]>`
  Parameters:
    `clazz` - the type of object to return
    `inputMessage` - the HTTP input message to read from
  Returns:
    the converted object
  Throws:
    `IOException` - in case of I/O errors

### getContentLength

    protected Long getContentLength(byte[] bytes,
                                    MediaType contentType)

  Description copied from class: `AbstractHttpMessageConverter`
  Returns the content length for the given type.

  By default, this returns `null`, meaning that the content length is unknown. Can be overridden in subclasses.

  Overrides:
    `getContentLength` in class `AbstractHttpMessageConverter<byte[]>`
  Parameters:
    `bytes` - the type to return the content length for
  Returns:
    the content length, or `null` if not known

### writeInternal

    protected void writeInternal(byte[] bytes,
                                 HttpOutputMessage outputMessage)
                          throws IOException

  Description copied from class: `AbstractHttpMessageConverter`
  Abstract template method that writes the actual body. Invoked from `AbstractHttpMessageConverter.write(T, org.springframework.http.MediaType, org.springframework.http.HttpOutputMessage)`.

  Specified by:
    `writeInternal` in class `AbstractHttpMessageConverter<byte[]>`
  Parameters:
    `bytes` - the object to write to the output message
    `outputMessage` - the message to write to
  Throws:
    `IOException` - in case of I/O errors

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