MyBatis JPA Extra 3.0 发布，支持 SpringBoot3
MyBatis JPA Extra MyBatis JPA Extra对 MyBatis 扩展 JPA 功能 1.JPA 2.1 注释简化 CUID 操作; 2.Interceptor 实现数据库SELECT 分页查询; 3.链式Query 查询条件构造器； 4. 提供 starter,简化 SpringBoot 集成; 1、JPA 2.1 注释 1.1、注释 仅支持 6 个注释 @Entity @Table @Column @Id @GeneratedValue @Transient 1.2、主键策略 序号 策略 支持 1 AUTO 4 种主键自动填充策略 snowflakeid (雪花 ID - 推荐) uuid(UUID) uuid.hex (UUID 十六进制) serial (JPA Extra 序列) 2 SEQUENCE 数据库序列生成，generator 值为数据库序列名 3 IDENTITY 数据库表自增主键 1.3、Java Bean 注释 @Entity @Table(name = "STUDENTS") public class Students extends JpaBaseEntity implements Serializable{ @Id @Column @GeneratedValue(strategy=GenerationType.AUTO,generator="snowflakeid") //@GeneratedValue(strategy=GenerationType.SEQUENCE,generator="SEQ_MYBATIS_STUD") //@GeneratedValue(strategy=GenerationType.IDENTITY) private String id; @Column private String stdNo; @Column private String stdName; @Column private String stdGender; @Column private int stdAge; @Column private String stdMajor; @Column private String stdClass; @Column private byte[] images; public Students() {} //public get(){}; public void set(){}; } 2、基本操作 2.1、CURD //新增数据 @Test public void insert() throws Exception{ _logger.info("insert..."); Students student=new Students(); student.setStdNo("10024"); student.setStdGender("M"); student.setStdName("司马昭"); student.setStdAge(20); student.setStdMajor("政治"); student.setStdClass("4"); service.insert(student); Thread.sleep(1000); _logger.info("insert id " + student.getId()); } //查询数据实体并更新 @Test public void update() throws Exception{ _logger.info("get..."); Students student=service.get("317d5eda-927c-4871-a916-472a8062df23"); System.out.println("Students "+student); _logger.info("Students "+student); _logger.info("update..."); student.setImages(null); service.update(student); _logger.info("updateed."); student.setImages("ssss".getBytes()); service.update(student); _logger.info("updateed2."); } //根据实体查询并更新 @Test public void merge() throws Exception{ _logger.info("merge..."); Students student=new Students(); //student.setId("10024"); student.setStdNo("10024"); student.setStdGender("M"); student.setStdName("司马昭"); student.setStdAge(20); student.setStdMajor("政治"); student.setStdClass("4"); service.merge(student); Thread.sleep(1000); _logger.info("merge id " + student.getId()); } //根据ID查询 @Test public void get() throws Exception{ _logger.info("get..."); Students student=service.get("317d5eda-927c-4871-a916-472a8062df23"); System.out.println("Students "+student); _logger.info("Students "+student); } //根据实体查询 @Test public void query() throws Exception{ _logger.info("query..."); Students student=new Students(); student.setStdGender("M"); List<Students> listStudents =service.query(student); //... } //查询所有记录 @Test public void findAll() throws Exception{ _logger.info("findAll..."); List<Students> listStudents =service.findAll(); //... } //根据ID删除 @Test public void remove() throws Exception{ _logger.info("remove..."); service.remove("921d3377-937a-4578-b1e2-92fb23b5e512"); } //根据ID集合批量删除 @Test public void batchDelete() throws Exception{ _logger.info("batchDelete..."); List<String> idList=new ArrayList<String>(); idList.add("8584804d-b5ac-45d2-9f91-4dd8e7a090a7"); idList.add("ab7422e9-a91a-4840-9e59-9d911257c918"); idList.add("12b6ceb8-573b-4f01-ad85-cfb24cfa007c"); idList.add("dafd5ba4-d2e3-4656-bd42-178841e610fe"); service.deleteBatch(idList); } //根据ID批量逻辑删除 @Test public void logicDelete() throws Exception{ _logger.info("logicDelete..."); List<String> idList=new ArrayList<String>(); idList.add("8584804d-b5ac-45d2-9f91-4dd8e7a090a7"); idList.add("ab7422e9-a91a-4840-9e59-9d911257c918"); idList.add("12b6ceb8-573b-4f01-ad85-cfb24cfa007c"); idList.add("dafd5ba4-d2e3-4656-bd42-178841e610fe"); service.logicDelete(idList); } //根据ID批量删除 @Test public void batchDeleteByIds() throws Exception{ _logger.info("batchDeleteByIds..."); service.deleteBatch("2"); service.deleteBatch("2,639178432667713536"); } 2.2、Find 查询和 Qruey 构造器 //springJDBC 的查询方式 @Test public void find() throws Exception{ _logger.info("find by filter StdNo = '10024' or StdNo = '10004'"); List<Students> listStudents = service.find(" StdNo = ? or StdNo = ? ", new Object[]{"10024","10004"}, new int[]{Types.VARCHAR,Types.INTEGER} ); //... } //根据链式条件构造器查询 //WHERE (stdMajor = '政治' and STDAGE > 30 and stdMajor in ( '政治' , '化学' ) or ( stdname = '周瑜' or stdname = '吕蒙' ) ) @Test public void filterByQuery() throws Exception{ _logger.info("filterByQuery..."); List<Students> listStudents = service.query( new Query().eq("stdMajor", "政治").and().gt("STDAGE", 30).and().in("stdMajor", new Object[]{"政治","化学"}) .or(new Query().eq("stdname", "周瑜").or().eq("stdname", "吕蒙"))); //... } 2.3、分页查询并 count 数据量 //根据实体分页查询 @Test public void queryPageResults() throws Exception{ _logger.info("queryPageResults..."); Students student=new Students(); //student.setStdGender("M"); //student.setStdMajor(政治"); student.setPageSize(10); //student.setPageNumber(2); student.calculate(21); JpaPageResults<Students> results = service.queryPageResults(student); List<Students> rowsStudents = results.getRows(); long records =results.getRecords();//当前页记录数量 long totalPage =results.getTotalPage();//总页数 long total =results.getTotal();//总数据量 long page =results.getPage();//当前页 //... } //mapper id分页查询 @Test public void queryPageResultsByMapperId() throws Exception{ _logger.info("queryPageResults by mapperId..."); Students student=new Students(); student.setStdGender("M"); //student.setStdMajor(政治"); student.setPageSize(10); student.setPageNumber(2); JpaPageResults<Students> results = service.queryPageResults("queryPageResults1",student); //... } 3、版本更新 支持jdk 17 支持Spring 6 支持SpringBoot 3 底层代码优化
