java.lang.Object
- org.springframework.http.converter.AbstractHttpMessageConverter<T>
- - org.springframework.http.converter.AbstractGenericHttpMessageConverter<Object>
  - - org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter
    - - org.springframework.http.converter.json.MappingJackson2HttpMessageConverter

All Implemented Interfaces:
GenericHttpMessageConverter<Object>, HttpMessageConverter<Object>
```
public class MappingJackson2HttpMessageConverter
extends AbstractJackson2HttpMessageConverter
```
Implementation of HttpMessageConverter that can read and write JSON using Jackson 2.x's ObjectMapper.
This converter can be used to bind to typed beans, or untyped HashMap instances.
By default, this converter supports application/json and application/*+json with UTF-8 character set. This can be overridden by setting the supportedMediaTypes property.
The default constructor uses the default configuration provided by Jackson2ObjectMapperBuilder.
Compatible with Jackson 2.9 and higher, as of Spring 5.0.
Since:
3.1.2
Author:
Arjen Poutsma, Keith Donald, Rossen Stoyanchev, Juergen Hoeller, Sebastien Deleuze

Field Summary
- Fields inherited from class org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter
  DEFAULT_CHARSET, objectMapper
- Fields inherited from class org.springframework.http.converter.AbstractHttpMessageConverter
  logger

Constructor Summary

Constructors
Constructor	Description
`MappingJackson2HttpMessageConverter()`	Construct a new `MappingJackson2HttpMessageConverter` using default configuration provided by `Jackson2ObjectMapperBuilder`.
`MappingJackson2HttpMessageConverter(ObjectMapper objectMapper)`	Construct a new `MappingJackson2HttpMessageConverter` with a custom `ObjectMapper`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`setJsonPrefix(String jsonPrefix)`	Specify a custom prefix to use for this view's JSON output.
`void`	`setPrefixJson(boolean prefixJson)`	Indicate whether the JSON output by this view should be prefixed with ")]}', ".
`protected void`	`writePrefix(JsonGenerator generator, Object object)`	Write a prefix before the main content.

Methods inherited from class org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter
canRead, canRead, canWrite, getCharset, getContentLength, getDefaultContentType, getJavaType, getJsonEncoding, getObjectMapper, logWarningIfNecessary, read, readInternal, setObjectMapper, setPrettyPrint, writeInternal, writeSuffix

Methods inherited from class org.springframework.http.converter.AbstractGenericHttpMessageConverter
canWrite, supports, write, writeInternal

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

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

Methods inherited from interface org.springframework.http.converter.HttpMessageConverter
getSupportedMediaTypes, read, write

- Constructor Detail
  - MappingJackson2HttpMessageConverter
```
public MappingJackson2HttpMessageConverter()
```
    Construct a new MappingJackson2HttpMessageConverter using default configuration provided by Jackson2ObjectMapperBuilder.
  - MappingJackson2HttpMessageConverter
```
public MappingJackson2HttpMessageConverter(ObjectMapper objectMapper)
```
    Construct a new MappingJackson2HttpMessageConverter with a custom ObjectMapper. You can use Jackson2ObjectMapperBuilder to build it easily.
    See Also:
    Jackson2ObjectMapperBuilder.json()
- Method Detail
  - setJsonPrefix
```
public void setJsonPrefix(String jsonPrefix)
```
    Specify a custom prefix to use for this view's JSON output. Default is none.
    See Also:
    setPrefixJson(boolean)
  - setPrefixJson
```
public void setPrefixJson(boolean prefixJson)
```
    Indicate whether the JSON output by this view should be prefixed with ")]}', ". Default is false.
    Prefixing the JSON string in this manner is used to help prevent JSON Hijacking. The prefix renders the string syntactically invalid as a script so that it cannot be hijacked. This prefix should be stripped before parsing the string as JSON.
    See Also:
    setJsonPrefix(java.lang.String)
  - writePrefix
```
protected void writePrefix(JsonGenerator generator,
                           Object object)
                    throws IOException
```
    Description copied from class: AbstractJackson2HttpMessageConverter
    Write a prefix before the main content.
    Overrides:
    writePrefix in class AbstractJackson2HttpMessageConverter
    Parameters:
    generator - the generator to use for writing content.
    object - the object to write to the output message.
    Throws:
    IOException

Class MappingJackson2HttpMessageConverter

Field Summary

Fields inherited from class org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter

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

Constructor Summary

Method Summary

Methods inherited from class org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter

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

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

Methods inherited from class java.lang.Object

Methods inherited from interface org.springframework.http.converter.HttpMessageConverter

Constructor Detail

MappingJackson2HttpMessageConverter

MappingJackson2HttpMessageConverter

Method Detail

setJsonPrefix

setPrefixJson

writePrefix