spring data jpa 是日常开发过程中经常使用的ORM之一，其功能简单易上手。但也有一些痛点

如下：
1.开发过程中经常会因为各个同事之间对其理解不统一导致风格各异.
2.在使用查询功能时会需要自行处理逻辑

如何解决：
spring data jpa expansion 是一款针对spring data jpa 增强的插件,其功能主要对增删改查做二次封装,达到使用同一风格、轻松CRUD

示例：

    package cn.com.spring.data.jpa.example.config;

    import com.zs.spring.data.jpa.repository.BaseSimpleJpaRepository;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
    import org.springframework.data.web.config.EnableSpringDataWebSupport;

    @Configuration
    @EnableJpaRepositories(repositoryBaseClass = BaseSimpleJpaRepository.class,
                    basePackages = "cn.com.spring.data.jpa.example.dao")
    @EnableSpringDataWebSupport
    public class SpringDataJpaConfig {
    }
    
    
    package cn.com.spring.data.jpa.example.dao;

    import cn.com.spring.data.jpa.example.entity.SysUser;
    import com.zs.spring.data.jpa.repository.BaseJpaRepository;
    import com.zs.spring.data.jpa.repository.BaseRepository;

    public interface SysUserRepository extends BaseRepository<SysUser,String> {

    }
    
    package cn.com.spring.data.jpa.example.entity;

    import com.zs.spring.data.jpa.entity.BaseEntity;
    import lombok.Data;
    import org.hibernate.annotations.GenericGenerator;

    import javax.persistence.*;

    @Data
    @Entity
    @Table(name = "sys_user")
    public class SysUser extends BaseEntity <String>{


            @Id
            @GenericGenerator(name = "system-uuid", strategy = "uuid")
            @GeneratedValue(generator = "system-uuid")
            @Column(name = "user_id")
            private String userId;

            @Column(name = "user_name")
            private String userName;

            @Column(name = "password")
            private String password;

            @Column(name = "status")
            private Integer status;
    }
    
    
    package cn.com.spring.data.jpa.example;

    import cn.com.spring.data.jpa.example.dao.SysUserRepository;
    import cn.com.spring.data.jpa.example.entity.SysUser;
    import com.zs.spring.data.jpa.Criteria;
    import com.zs.spring.data.jpa.Order;
    import com.zs.spring.data.jpa.Restrictions;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;

    @RunWith(SpringRunner.class)
    @SpringBootTest
    public class SpringDataJpaExampleApplicationTests {


        @Autowired
        private SysUserRepository sysUserRepository;

        @Test
        public void saveOrUpdateTest(){
            SysUser sysUser = new SysUser();
            sysUser.setPassword("123456");
            sysUser.setUserName("zhangsan");
            sysUser.setStatus(1);
            sysUserRepository.save(sysUser);
        }

        @Test
        public void deleteTest(){
            sysUserRepository.delete("id");
        }

        @Test
        public void findTest() {
            Criteria<SysUser> criteria = new Criteria<>();
            criteria.add(Restrictions.eq("status",1));//等于
            criteria.add(Restrictions.like("userName","zhangsan"));//模糊查询
            criteria.add(Restrictions.ne("password","123456"));//不等于
            criteria.addOrder(Order.asc("status"));//按状态排序
            sysUserRepository.findAll(criteria);
        }

    }

github地址：
https://github.com/ZShUn/spring-data-jpa-expansion