中文版

https://github.com/ZhongjunTian/spring-repository-plus This is actually a good implementation of spring JPA Specification interface, it makes front-end having full control of filtering data with very little back-end code.

Querying with spring-repository-plus is as simple as:

or

Here is ALL your back-end code

    @PostMapping("/persons")
    public List<Person> filter(@RequestBody Filter filter){
        return selectFrom(personRepository).leftJoin("address").where(filter).findAll();
    }

    public interface PersonRepository extends JpaRepository<Person, Long>,JpaSpecificationExecutor {
    }

But with such little code, you can also filter data by ANY complex logic (and, or) and ANY operations (equal, startswith, endswith, greaterthan...)

The example below is equivalent to lastName='Tian' AND (address.city='Dallas' OR address.city like 'San%')

or

Table definition

CREATE TABLE PERSON (
	id BIGINT GENERATED BY DEFAULT AS IDENTITY,
	first_name varchar(255) not null,
	last_name varchar(255) not null,
	address_id int null
);
CREATE TABLE ADDRESS (
	id BIGINT GENERATED BY DEFAULT AS IDENTITY,
	city varchar(255) not null
);

And please feel free to give me any advice.

git clone https://github.com/ZhongjunTian/spring-repository-plus.git
cd spring-repository-plus
mvn spring-boot:run

You can look at PersonControllerTest.java and TestEntityControllerTest.java for more details,