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

All Implemented Interfaces:
HttpMessageConverter<String>
```
public class StringHttpMessageConverter
extends AbstractHttpMessageConverter<String>
```
Implementation of HttpMessageConverter that can read and write strings.
By default, this converter supports all media types (*/*), and writes with a Content-Type of text/plain. This can be overridden by setting the supportedMediaTypes property.
Since:
3.0
Author:
Arjen Poutsma, Juergen Hoeller

Field Summary
Fields
Modifier and Type Field Description
static Charset DEFAULT_CHARSET
- Fields inherited from class org.springframework.http.converter.AbstractHttpMessageConverter
  logger

Constructor Summary

Constructors
Constructor	Description
`StringHttpMessageConverter()`	A default constructor that uses `"ISO-8859-1"` as the default charset.
`StringHttpMessageConverter(Charset defaultCharset)`	A constructor accepting a default charset to use if the requested content type does not specify one.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected List<Charset>`	`getAcceptedCharsets()`	Return the list of supported `Charset`s.
`protected Long`	`getContentLength(String str, MediaType contentType)`	Returns the content length for the given type.
`protected String`	`readInternal(Class<? extends String> 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.
`boolean`	`supports(Class<?> clazz)`	Indicates whether the given class is supported by this converter.
`protected void`	`writeInternal(String str, HttpOutputMessage outputMessage)`	Abstract template method that writes the actual body.

Methods inherited from class org.springframework.http.converter.AbstractHttpMessageConverter
addDefaultHeaders, canRead, canRead, canWrite, 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

- Field Detail
  - DEFAULT_CHARSET
```
public static final Charset DEFAULT_CHARSET
```
- Constructor Detail
  - StringHttpMessageConverter
```
public StringHttpMessageConverter()
```
    A default constructor that uses "ISO-8859-1" as the default charset.
    See Also:
    StringHttpMessageConverter(Charset)
  - StringHttpMessageConverter
```
public StringHttpMessageConverter(Charset defaultCharset)
```
    A constructor accepting a default charset to use if the requested content type does not specify one.
- Method Detail
  - setWriteAcceptCharset
```
public void setWriteAcceptCharset(boolean writeAcceptCharset)
```
    Indicates whether the Accept-Charset should be written to any outgoing request.
    Default is true.
  - 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<String>
    Parameters:
    clazz - the class to test for support
    Returns:
    true if supported; false otherwise
  - readInternal
```
protected String readInternal(Class<? extends String> 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<String>
    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(String str,
                                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<String>
    Parameters:
    str - the type to return the content length for
    Returns:
    the content length, or null if not known
  - writeInternal
```
protected void writeInternal(String str,
                             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<String>
    Parameters:
    str - the object to write to the output message
    outputMessage - the HTTP output message to write to
    Throws:
    IOException - in case of I/O errors
  - getAcceptedCharsets
```
protected List<Charset> getAcceptedCharsets()
```
    Return the list of supported Charsets.
    By default, returns Charset.availableCharsets(). Can be overridden in subclasses.
    Returns:
    the list of accepted charsets

Class StringHttpMessageConverter

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

Field Detail

DEFAULT_CHARSET

Constructor Detail

StringHttpMessageConverter

StringHttpMessageConverter

Method Detail

setWriteAcceptCharset

supports

readInternal

getContentLength

writeInternal

getAcceptedCharsets