类 MappingJackson2MessageConverter

构造器详细资料

• MappingJackson2MessageConverter

  public MappingJackson2MessageConverter()

  Construct a MappingJackson2MessageConverter supporting the application/json MIME type with UTF-8 character set.

• MappingJackson2MessageConverter

  public MappingJackson2MessageConverter​(MimeType... supportedMimeTypes)

  Construct a MappingJackson2MessageConverter supporting one or more custom MIME types.

  参数:

  supportedMimeTypes - the supported MIME types

  从以下版本开始:

  4.1.5

方法详细资料

• setObjectMapper

  public void setObjectMapper​(ObjectMapper objectMapper)

  Set the ObjectMapper for this converter. If not set, a default ObjectMapper is used.

  Setting a custom-configured ObjectMapper is one way to take further control of the JSON serialization process. For example, an extended SerializerFactory can be configured that provides custom serializers for specific types. The other option for refining the serialization process is to use Jackson's provided annotations on the types to be serialized, in which case a custom-configured ObjectMapper is unnecessary.

• getObjectMapper

  public ObjectMapper getObjectMapper()

  Return the underlying ObjectMapper for this converter.

• setPrettyPrint

  public void setPrettyPrint​(boolean prettyPrint)

  Whether to use the DefaultPrettyPrinter when writing JSON. This is a shortcut for setting up an ObjectMapper as follows:

   ObjectMapper mapper = new ObjectMapper();
   mapper.configure(SerializationFeature.INDENT_OUTPUT, true);
   converter.setObjectMapper(mapper);
   

• canConvertFrom

  protected boolean canConvertFrom​(Message<?> message,
                                   @Nullable
                                   Class<?> targetClass)

  覆盖:

  canConvertFrom 在类中 AbstractMessageConverter

• canConvertTo

  protected boolean canConvertTo​(Object payload,
                                 @Nullable
                                 MessageHeaders headers)

  覆盖:

  canConvertTo 在类中 AbstractMessageConverter

• logWarningIfNecessary

  protected void logWarningIfNecessary​(Type type,
                                       @Nullable
                                       Throwable cause)

  Determine whether to log the given exception coming from a ObjectMapper.canDeserialize(com.fasterxml.jackson.databind.JavaType) / ObjectMapper.canSerialize(java.lang.Class<?>) check.

  参数:

  type - the class that Jackson tested for (de-)serializability

  cause - the Jackson-thrown exception to evaluate (typically a JsonMappingException)

  从以下版本开始:

  4.3

• supports

  protected boolean supports​(Class<?> clazz)

  从类复制的说明: AbstractMessageConverter
  Whether the given class is supported by this converter.

  指定者:

  supports 在类中 AbstractMessageConverter

  参数:

  clazz - the class to test for support

  返回:

  true if supported; false otherwise

• convertFromInternal

  @Nullable
  protected Object convertFromInternal​(Message<?> message,
                                       Class<?> targetClass,
                                       @Nullable
                                       Object conversionHint)

  从类复制的说明: AbstractMessageConverter
  Convert the message payload from serialized form to an Object.

  覆盖:

  convertFromInternal 在类中 AbstractMessageConverter

  参数:

  message - the input message

  targetClass - the target class for the conversion

  conversionHint - an extra object passed to the MessageConverter, e.g. the associated MethodParameter (may be null}

  返回:

  the result of the conversion, or null if the converter cannot perform the conversion

• convertToInternal

  @Nullable
  protected Object convertToInternal​(Object payload,
                                     @Nullable
                                     MessageHeaders headers,
                                     @Nullable
                                     Object conversionHint)

  从类复制的说明: AbstractMessageConverter
  Convert the payload object to serialized form.

  覆盖:

  convertToInternal 在类中 AbstractMessageConverter

  参数:

  payload - the Object to convert

  headers - optional headers for the message (may be null)

  conversionHint - an extra object passed to the MessageConverter, e.g. the associated MethodParameter (may be null}

  返回:

  the resulting payload for the message, or null if the converter cannot perform the conversion

• getSerializationView

  @Nullable
  protected Class<?> getSerializationView​(@Nullable
                                          Object conversionHint)

  Determine a Jackson serialization view based on the given conversion hint.

  参数:

  conversionHint - the conversion hint Object as passed into the converter for the current conversion attempt

  返回:

  the serialization view class, or null if none

  从以下版本开始:

  4.2

• getJsonEncoding

  protected JsonEncoding getJsonEncoding​(@Nullable
                                         MimeType contentType)

  Determine the JSON encoding to use for the given content type.

  参数:

  contentType - the MIME type from the MessageHeaders, if any

  返回:

  the JSON encoding to use (never null)