package com.baeldung.jsonoptimization; import java.io.IOException; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.databind.SerializerProvider; import com.fasterxml.jackson.databind.ser.std.StdSerializer; public class CustomerSerializer extends StdSerializer { private static final long serialVersionUID = 1L; public CustomerSerializer() { this(null); } public CustomerSerializer(Class t) { super(t); } @Override public void serialize(Customer customer, JsonGenerator jsonGenerator, SerializerProvider serializer) throws IOException { jsonGenerator.writeStartArray(); jsonGenerator.writeNumber(customer.getId()); jsonGenerator.writeString(customer.getFirstName()); jsonGenerator.writeString(customer.getLastName()); jsonGenerator.writeString(customer.getStreet()); jsonGenerator.writeString(customer.getPostalCode()); jsonGenerator.writeString(customer.getCity()); jsonGenerator.writeString(customer.getState()); jsonGenerator.writeString(customer.getPhoneNumber()); jsonGenerator.writeString(customer.getEmail()); jsonGenerator.writeEndArray(); } }