Jackson Data Binding Source Code

Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

  • Jackson Data Binding module allows you to converts JSON to and from POJO (Plain Old Java Object) using property accessor or using annotations.
  • Jackson Databind Source Code files are provided in the source packge (jackson-databind-2.12.4-sources.jar). You can download it at Jackson Maven Website.

    You can also browse Jackson Databind Source Code below:

    ✍: FYIcenter.com

    com/fasterxml/jackson/databind/ser/std/StringSerializer.java

    package com.fasterxml.jackson.databind.ser.std;
    
    import java.io.IOException;
    import java.lang.reflect.Type;
    
    import com.fasterxml.jackson.core.*;
    
    import com.fasterxml.jackson.databind.JavaType;
    import com.fasterxml.jackson.databind.JsonMappingException;
    import com.fasterxml.jackson.databind.JsonNode;
    import com.fasterxml.jackson.databind.SerializerProvider;
    import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
    import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
    import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
    
    /**
     * This is the special serializer for regular {@link java.lang.String}s.
     *<p>
     * Since this is one of "native" types, no type information is ever
     * included on serialization (unlike for most scalar types as of 1.5)
     */
    @JacksonStdImpl
    public final class StringSerializer
    // NOTE: generic parameter changed from String to Object in 2.6, to avoid
    //   use of bridge methods
    // In 2.9, removed use of intermediate type `NonTypedScalarSerializerBase`
        extends StdScalarSerializer<Object>
    {
        private static final long serialVersionUID = 1L;
    
        public StringSerializer() { super(String.class, false); }
    
        @Override
        public boolean isEmpty(SerializerProvider prov, Object value) {
            String str = (String) value;
            return str.isEmpty();
        }
    
        @Override
        public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException {
            gen.writeString((String) value);
        }
    
        @Override
        public final void serializeWithType(Object value, JsonGenerator gen, SerializerProvider provider,
                TypeSerializer typeSer) throws IOException
        {
            // no type info, just regular serialization
            gen.writeString((String) value);
        }
    
        @Override
        public JsonNode getSchema(SerializerProvider provider, Type typeHint) {
            return createSchemaNode("string", true);
        }
    
        @Override
        public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException {
            visitStringFormat(visitor, typeHint);
        }
    }
    

    com/fasterxml/jackson/databind/ser/std/StringSerializer.java

     

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    2022-03-29, 31931👍, 0💬