DefaultObjectMapper.java 文件源码

public DefaultObjectMapper() {
    configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
    configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
    setSerializationInclusion(JsonSerialize.Inclusion.ALWAYS);
    configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    setVisibility(JsonMethod.ALL, JsonAutoDetect.Visibility.PUBLIC_ONLY);
}