Trim strings in JSON paylod

StringTrimModule.java

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer;
import com.fasterxml.jackson.databind.module.SimpleModule;
import org.springframework.stereotype.Component;

import java.io.IOException;

@Component
/**
 * Trim strings in JSON payload.
 */
public class StringTrimModule extends SimpleModule {

    public StringTrimModule() {
        addDeserializer(String.class, new StdScalarDeserializer<String>(String.class) {
            @Override
            public String deserialize(JsonParser jsonParser, DeserializationContext ctx) throws IOException,
                    JsonProcessingException {
                final String stringValue = jsonParser.getValueAsString();
                switch (jsonParser.getCurrentName()) {
                    case "password":
                        return stringValue;
                    default:
                        return stringValue.trim();
                }
            }
        });
    }
}

// Application.java:
//@Bean
//public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
//    MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
//    ObjectMapper objectMapper = new ObjectMapper();
//    objectMapper.registerModule(new StringTrimModule());
//    jsonConverter.setObjectMapper(objectMapper);
//    return jsonConverter;
//}