Use of annotations @JsonInclude, @JsonFormat, @DateTimeFormat

@JsonInclude (value=include.non_null): The function that is used on the head of the method class of the entity class is that the parameter of the entity class is queried to a NULL that is not displayed

@DateTimeFormat: The time value auto-transform used to receive the front-end pass can be date can be a string note format as Yyyy-mm-dd yyyy/mm/ddd

@JsonFormat用于输出的时候时间格式解析

Use of annotations @JsonInclude, @JsonFormat, @DateTimeFormat