com.fasterxml.jackson.databind.ser.std

## Class StringSerializer

- java.lang.Object
- - com.fasterxml.jackson.databind.JsonSerializer<T>
  - - com.fasterxml.jackson.databind.ser.std.StdSerializer<T>
    - - com.fasterxml.jackson.databind.ser.std.StdScalarSerializer<T>
      - - com.fasterxml.jackson.databind.ser.std.NonTypedScalarSerializerBase<java.lang.Object>
        - - com.fasterxml.jackson.databind.ser.std.StringSerializer

- All Implemented Interfaces:
    JsonFormatVisitable, SchemaAware, java.io.Serializable

      public final class StringSerializer
      extends NonTypedScalarSerializerBase<java.lang.Object>

  This is the special serializer for regular `String`s.

  Since this is one of "native" types, no type information is ever included on serialization (unlike for most scalar types as of 1.5)

  See Also:
    Serialized Form

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonSerializer

      `JsonSerializer.None`

  - ### Field Summary

    - ### Fields inherited from class com.fasterxml.jackson.databind.ser.std.StdSerializer

      `_handledType`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `StringSerializer()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)` Default implementation specifies no format.
    `JsonNode` | `getSchema(SerializerProvider provider, java.lang.reflect.Type typeHint)` Default implementation simply claims type is "string"; usually overriden by custom serializers.
    `boolean` | `isEmpty(java.lang.Object value)` Deprecated.
    `boolean` | `isEmpty(SerializerProvider prov, java.lang.Object value)` Method called to check whether given serializable value is considered "empty" value (for purposes of suppressing serialization of empty values).
    `void` | `serialize(java.lang.Object value, com.fasterxml.jackson.core.JsonGenerator gen, SerializerProvider provider)` Method that can be called to ask implementation to serialize values of type this serializer handles.

    - ### Methods inherited from class com.fasterxml.jackson.databind.ser.std.NonTypedScalarSerializerBase

      `serializeWithType`

    - ### Methods inherited from class com.fasterxml.jackson.databind.ser.std.StdSerializer

      `createObjectNode, createSchemaNode, createSchemaNode, findAnnotatedContentSerializer, findConvertingContentSerializer, findFormatFeature, findFormatOverrides, findIncludeOverrides, findPropertyFilter, getSchema, handledType, isDefaultSerializer, visitArrayFormat, visitArrayFormat, visitFloatFormat, visitIntFormat, visitIntFormat, visitStringFormat, visitStringFormat, wrapAndThrow, wrapAndThrow`

    - ### Methods inherited from class com.fasterxml.jackson.databind.JsonSerializer

      `getDelegatee, isUnwrappingSerializer, properties, replaceDelegatee, unwrappingSerializer, usesObjectId, withFilterId`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### StringSerializer

          public StringSerializer()

  - ### Method Detail

    - #### isEmpty

          @Deprecated
          public boolean isEmpty(java.lang.Object value)

      Deprecated.
      For Strings, both null and Empty String qualify for emptiness.
      Overrides:
        `isEmpty` in class `JsonSerializer<java.lang.Object>`

    - #### isEmpty

          public boolean isEmpty(SerializerProvider prov,
                        java.lang.Object value)

      Description copied from class: `JsonSerializer`
      Method called to check whether given serializable value is considered "empty" value (for purposes of suppressing serialization of empty values).

      Default implementation will consider only null values to be empty.

      NOTE: replaces `JsonSerializer.isEmpty(Object)`, which was deprecated in 2.5

      Overrides:
        `isEmpty` in class `JsonSerializer<java.lang.Object>`

    - #### serialize

          public void serialize(java.lang.Object value,
                       com.fasterxml.jackson.core.JsonGenerator gen,
                       SerializerProvider provider)
                         throws java.io.IOException

      Description copied from class: `JsonSerializer`
      Method that can be called to ask implementation to serialize values of type this serializer handles.
      Specified by:
        `serialize` in class `StdSerializer<java.lang.Object>`
      Parameters:
        `value` - Value to serialize; can not be null.
        `gen` - Generator used to output resulting Json content
        `provider` - Provider that can be used to get serializers for serializing Objects value contains, if any.
      Throws:
        `java.io.IOException`

    - #### getSchema

          public JsonNode getSchema(SerializerProvider provider,
                           java.lang.reflect.Type typeHint)

      Description copied from class: `StdSerializer`
      Default implementation simply claims type is "string"; usually overriden by custom serializers.
      Specified by:
        `getSchema` in interface `SchemaAware`
      Overrides:
        `getSchema` in class `StdScalarSerializer<java.lang.Object>`
      Parameters:
        `provider` - The serializer provider.
        `typeHint` - A hint about the type.
      Returns:
        Json-schema for this serializer.

    - #### acceptJsonFormatVisitor

          public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor,
                                     JavaType typeHint)
                                       throws JsonMappingException

      Description copied from class: `StdSerializer`
      Default implementation specifies no format. This behavior is usually overriden by custom serializers.
      Specified by:
        `acceptJsonFormatVisitor` in interface `JsonFormatVisitable`
      Overrides:
        `acceptJsonFormatVisitor` in class `StdScalarSerializer<java.lang.Object>`
        `typeHint` - Type of element (entity like property) being visited
      Throws:
        `JsonMappingException`