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How to get the JsonGenerator settings using Jackson in Java?
The JsonGenerator class can be responsible for writing JSON data as a stream instead of constructing an Object Model in memory. The list of settings that can be turned on/off is present in an enum JsonGenerator.Feature, it contains static method values() that returns an array containing the constants of this enum type.
Syntax
public static enum JsonGenerator.Feature extends Enum<JsonGenerator.Feature>
Example
import java.io.*;
import com.fasterxml.jackson.core.*;
public class JsonGeneratorSettingsTest {
public static void main(String[] args) throws IOException {
StringWriter writer = new StringWriter();
JsonFactory jsonFactory = new JsonFactory();
JsonGenerator jsonGenerator = jsonFactory.createGenerator(writer);
for(JsonGenerator.Feature feature : JsonGenerator.Feature.values()) {
boolean result = jsonGenerator.isEnabled(feature);
System.out.println(feature.name() + ":" + result);
}
jsonGenerator.close();
}
}Output
AUTO_CLOSE_TARGET:true AUTO_CLOSE_JSON_CONTENT:true FLUSH_PASSED_TO_STREAM:true QUOTE_FIELD_NAMES:true QUOTE_NON_NUMERIC_NUMBERS:true ESCAPE_NON_ASCII:false WRITE_NUMBERS_AS_STRINGS:false WRITE_BIGDECIMAL_AS_PLAIN:false STRICT_DUPLICATE_DETECTION:false IGNORE_UNKNOWN:false
Updated on: 07-Jul-2020
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