java.lang.Object
- org.springframework.http.converter.AbstractHttpMessageConverter<Resource>
- - org.springframework.http.converter.ResourceHttpMessageConverter

所有已实现的接口:
HttpMessageConverter<Resource>
```
public class ResourceHttpMessageConverter
extends AbstractHttpMessageConverter<Resource>
```
Implementation of HttpMessageConverter that can read/write Resources and supports byte range requests.
By default, this converter can read all media types. The Java Activation Framework (JAF) - if available - is used to determine the Content-Type of written resources. If JAF is not available, application/octet-stream is used.
从以下版本开始:
3.0.2
作者:
Arjen Poutsma, Juergen Hoeller, Kazuki Shimizu

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
ResourceHttpMessageConverter()

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
`protected Long`	`getContentLength(Resource resource, MediaType contentType)`	Returns the content length for the given type.
`protected MediaType`	`getDefaultContentType(Resource resource)`	Returns the default content type for the given type.
`protected Resource`	`readInternal(Class<? extends Resource> clazz, HttpInputMessage inputMessage)`	Abstract template method that reads the actual object.
`protected boolean`	`supports(Class<?> clazz)`	Indicates whether the given class is supported by this converter.
`protected void`	`writeContent(Resource resource, HttpOutputMessage outputMessage)`
`protected void`	`writeInternal(Resource resource, HttpOutputMessage outputMessage)`	Abstract template method that writes the actual body.

从类继承的方法 org.springframework.http.converter.AbstractHttpMessageConverter
addDefaultHeaders, canRead, canRead, canWrite, canWrite, getDefaultCharset, 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

- 构造器详细资料
  - ResourceHttpMessageConverter
```
public ResourceHttpMessageConverter()
```
- 方法详细资料
  - 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<Resource>
    参数:
    clazz - the class to test for support
    返回:
    true if supported; false otherwise
  - readInternal
```
protected Resource readInternal(Class<? extends Resource> clazz,
                                HttpInputMessage inputMessage)
                         throws IOException,
                                HttpMessageNotReadableException
```
    从类复制的说明: AbstractHttpMessageConverter
    Abstract template method that reads the actual object. Invoked from AbstractHttpMessageConverter.read(java.lang.Class<? extends T>, org.springframework.http.HttpInputMessage).
    指定者:
    readInternal 在类中 AbstractHttpMessageConverter<Resource>
    参数:
    clazz - the type of object to return
    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
  - getDefaultContentType
```
protected MediaType getDefaultContentType(Resource resource)
```
    从类复制的说明: AbstractHttpMessageConverter
    Returns the default content type for the given type. Called when AbstractHttpMessageConverter.write(T, org.springframework.http.MediaType, org.springframework.http.HttpOutputMessage) is invoked without a specified content type parameter.
    By default, this returns the first element of the supportedMediaTypes property, if any. Can be overridden in subclasses.
    覆盖:
    getDefaultContentType 在类中 AbstractHttpMessageConverter<Resource>
    参数:
    resource - the type to return the content type for
    返回:
    the content type, or null if not known
  - getContentLength
```
protected Long getContentLength(Resource resource,
                                MediaType contentType)
                         throws IOException
```
    从类复制的说明: 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.
    覆盖:
    getContentLength 在类中 AbstractHttpMessageConverter<Resource>
    参数:
    resource - the type to return the content length for
    返回:
    the content length, or null if not known
    抛出:
    IOException
  - writeInternal
```
protected void writeInternal(Resource resource,
                             HttpOutputMessage outputMessage)
                      throws IOException,
                             HttpMessageNotWritableException
```
    从类复制的说明: AbstractHttpMessageConverter
    Abstract template method that writes the actual body. Invoked from AbstractHttpMessageConverter.write(T, org.springframework.http.MediaType, org.springframework.http.HttpOutputMessage).
    指定者:
    writeInternal 在类中 AbstractHttpMessageConverter<Resource>
    参数:
    resource - the object to write to the output message
    outputMessage - the HTTP output message to write to
    抛出:
    IOException - in case of I/O errors
    HttpMessageNotWritableException - in case of conversion errors
  - writeContent
```
protected void writeContent(Resource resource,
                            HttpOutputMessage outputMessage)
                     throws IOException,
                            HttpMessageNotWritableException
```
    抛出:
    IOException
    HttpMessageNotWritableException

类 ResourceHttpMessageConverter

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.AbstractHttpMessageConverter

从类继承的方法 java.lang.Object

构造器详细资料

ResourceHttpMessageConverter

方法详细资料

supports

readInternal

getDefaultContentType

getContentLength

writeInternal

writeContent