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

All Implemented Interfaces:
HttpMessageConverter<Object>
```
public class ObjectToStringHttpMessageConverter
extends AbstractHttpMessageConverter<Object>
```
An HttpMessageConverter that uses StringHttpMessageConverter for reading and writing content and a ConversionService for converting the String content to and from the target object type.
By default, this converter supports the media type text/plain only. This can be overridden through the supportedMediaTypes property.
A usage example:
```
 <bean class="org.springframework.http.converter.ObjectToStringHttpMessageConverter">
   <constructor-arg>
     <bean class="org.springframework.context.support.ConversionServiceFactoryBean"/>
   </constructor-arg>
 </bean>
 
```
Since:
3.2
Author:
Dmitry Katsubo, Rossen Stoyanchev

Field Summary
- Fields inherited from class org.springframework.http.converter.AbstractHttpMessageConverter
  logger

Constructor Summary

Constructors
Constructor	Description
`ObjectToStringHttpMessageConverter(ConversionService conversionService)`	A constructor accepting a `ConversionService` to use to convert the (String) message body to/from the target class type.
`ObjectToStringHttpMessageConverter(ConversionService conversionService, Charset defaultCharset)`	A constructor accepting a `ConversionService` as well as a default charset.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`canRead(Class<?> clazz, MediaType mediaType)`	This implementation checks if the given class is supported, and if the supported media types include the given media type.
`boolean`	`canWrite(Class<?> clazz, MediaType mediaType)`	This implementation checks if the given class is supported, and if the supported media types include the given media type.
`protected Long`	`getContentLength(Object obj, MediaType contentType)`	Returns the content length for the given type.
`protected Object`	`readInternal(Class<?> clazz, HttpInputMessage inputMessage)`	Abstract template method that reads the actual object.
`void`	`setWriteAcceptCharset(boolean writeAcceptCharset)`	Indicates whether the `Accept-Charset` should be written to any outgoing request.
`protected boolean`	`supports(Class<?> clazz)`	Indicates whether the given class is supported by this converter.
`protected void`	`writeInternal(Object obj, HttpOutputMessage outputMessage)`	Abstract template method that writes the actual body.

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

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

- Constructor Detail
  - ObjectToStringHttpMessageConverter
```
public ObjectToStringHttpMessageConverter(ConversionService conversionService)
```
    A constructor accepting a ConversionService to use to convert the (String) message body to/from the target class type. This constructor uses StringHttpMessageConverter.DEFAULT_CHARSET as the default charset.
    Parameters:
    conversionService - the conversion service
  - ObjectToStringHttpMessageConverter
```
public ObjectToStringHttpMessageConverter(ConversionService conversionService,
                                          Charset defaultCharset)
```
    A constructor accepting a ConversionService as well as a default charset.
    Parameters:
    conversionService - the conversion service
    defaultCharset - the default charset
- Method Detail
  - setWriteAcceptCharset
```
public void setWriteAcceptCharset(boolean writeAcceptCharset)
```
    Indicates whether the Accept-Charset should be written to any outgoing request.
    Default is true.
  - canRead
```
public boolean canRead(Class<?> clazz,
                       MediaType mediaType)
```
    Description copied from class: AbstractHttpMessageConverter
    This implementation checks if the given class is supported, and if the supported media types include the given media type.
    Specified by:
    canRead in interface HttpMessageConverter<Object>
    Overrides:
    canRead in class AbstractHttpMessageConverter<Object>
    Parameters:
    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.
    Returns:
    true if readable; false otherwise
  - canWrite
```
public boolean canWrite(Class<?> clazz,
                        MediaType mediaType)
```
    Description copied from class: AbstractHttpMessageConverter
    This implementation checks if the given class is supported, and if the supported media types include the given media type.
    Specified by:
    canWrite in interface HttpMessageConverter<Object>
    Overrides:
    canWrite in class AbstractHttpMessageConverter<Object>
    Parameters:
    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.
    Returns:
    true if writable; false otherwise
  - supports
```
protected 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<Object>
    Parameters:
    clazz - the class to test for support
    Returns:
    true if supported; false otherwise
  - readInternal
```
protected Object readInternal(Class<?> clazz,
                              HttpInputMessage inputMessage)
                       throws IOException
```
    Description copied from class: AbstractHttpMessageConverter
    Abstract template method that reads the actual object. Invoked from AbstractHttpMessageConverter.read(java.lang.Class<? extends T>, org.springframework.http.HttpInputMessage).
    Specified by:
    readInternal in class AbstractHttpMessageConverter<Object>
    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
  - writeInternal
```
protected void writeInternal(Object obj,
                             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<Object>
    Parameters:
    obj - the object to write to the output message
    outputMessage - the HTTP output message to write to
    Throws:
    IOException - in case of I/O errors
  - getContentLength
```
protected Long getContentLength(Object obj,
                                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<Object>
    Parameters:
    obj - the type to return the content length for
    Returns:
    the content length, or null if not known

Class ObjectToStringHttpMessageConverter

Field Summary

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

Constructor Summary

Method Summary

Methods inherited from class org.springframework.http.converter.AbstractHttpMessageConverter

Methods inherited from class java.lang.Object

Constructor Detail

ObjectToStringHttpMessageConverter

ObjectToStringHttpMessageConverter

Method Detail

setWriteAcceptCharset

canRead

canWrite

supports

readInternal

writeInternal

getContentLength