MyBatis JPA Extra v2.7GA发布

原创
2021/12/28 11:58
阅读数 77

MyBatis JPA Extra对MyBatis进行了JPA扩展,旨在基于JPA 2.1的注释简化对单表CUID操作,根据JPA注释动态生成SQL语句;使用Interceptor实现数据库SELECT分页查询,适配多种数据库;另外提供mybatis-jpa-extra-spring-boot-starter简化SpringBoot集成。

MyBatis JPA Extra对MyBatis扩展JPA功能

1.基于JPA 2.1的注释简化CUID操作;

2.用Interceptor实现数据库SELECT分页查询;

3.提供mybatis-jpa-extra-spring-boot-starter,简化SpringBoot集成;

1、JavaBean注释简单

仅有6个注释

@GeneratedValue有4中策略

  1. AUTO

    snowflakeid

    uuid

    uuid.hex

    serial

  2. SEQUENCE

    generator值为数据库序列名

  3. IDENTITY

    generator无,根据数据库自动生成方式

package org.apache.mybatis.jpa.test.entity;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import org.apache.mybatis.jpa.persistence.JpaBaseEntity;

@Entity
@Table(name = "STUDENTS")  
public class Students extends JpaBaseEntity implements Serializable{
	private static final long serialVersionUID = -6928570405840778151L;
	
	@Id
	@Column
	@GeneratedValue(strategy=GenerationType.AUTO,generator="snowflakeid")
	//@GeneratedValue(strategy=GenerationType.SEQUENCE,generator="SEQ_MYBATIS_STUD")
	//@GeneratedValue(strategy=GenerationType.IDENTITY,generator="SEQ_MYBATIS_STUD")
	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() {
		super();
	}

	public get(){};
	public void set(){};
	//...
}
 

2、单表新增、修改、删除、查询、分页查询

package org.apache.mybatis.jpa.test;
import java.sql.Types;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.apache.mybatis.jpa.test.dao.service.StudentsService;
import org.apache.mybatis.jpa.test.entity.Students;
import org.apache.mybatis.jpa.util.WebContext;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyBatisTestRunner {
	private static final Logger _logger = LoggerFactory.getLogger(MyBatisTestRunner.class);
	public static ApplicationContext context;
	public static StudentsService service;
	
	@Test
	public void insert() throws Exception{
		_logger.info("insert...");
		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.insert(student);
		
		Thread.sleep(1000);
		_logger.info("insert id " + student.getId());
		//service.remove(student.getId());
	}
	
	@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("insert id " + student.getId());
	}
	
	@Test
	public void find() throws Exception{
		_logger.info("find...");
		_logger.info("find by filter  " 
					+ service.find(" StdNo = '10024' or StdNo = '10004'")
		);

		_logger.info("find by filter with args " 
				+ service.find(
							" StdNo = ? or StdNo = ?  ",
							new Object[]{"10024","10004"},
							new int[]{Types.VARCHAR,Types.INTEGER}
						)
		);	
	}
	
	@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);
	}
	
	@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.");
	}
	
	@Test
	public void remove() throws Exception{
		_logger.info("remove...");
		Students student=new Students();
		student.setId("921d3377-937a-4578-b1e2-92fb23b5e512");
		service.remove(student.getId());
	}
	
	@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);
	}
	
	@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);
	}
	
	@Test
	public void batchDeleteByIds() throws Exception{
		_logger.info("batchDeleteByIds...");
		service.deleteBatch("2");
		service.deleteBatch("2,639178432667713536");
	}

	@Test
	public void queryPageResults() throws Exception{
		_logger.info("queryPageResults...");
		 Students student=new Students();
		 //student.setId("af04d610-6092-481e-9558-30bd63ef783c");
		 //student.setStdGender("M");
		 //student.setStdMajor(政治");
		 student.setPageSize(10);
		 //student.setPageNumber(2);
		 student.calculate(21);
		 List<Students> allListStudents = 
				 service.queryPageResults(student).getRows();
		 for (Students s : allListStudents) {
			 _logger.info("Students "+s);
		 }
	}
	
	@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);
		 List<Students> allListStudents = 
				 service.queryPageResults("queryPageResults1",student).getRows();
		 for (Students s : allListStudents) {
			 _logger.info("Students "+s);
		 }
	}
	
	@Test
	public void query() throws Exception{
		_logger.info("findAll...");
		List<Students> allListStudents =service.query(null);
		 for (Students s : allListStudents) {
			 _logger.info("Students "+s);
		 }
	}
	
	@Test
	public void findAll() throws Exception{
		_logger.info("findAll...");
		List<Students> allListStudents =service.findAll();
		 for (Students s : allListStudents) {
			 _logger.info("Students "+s);
		 }
	}
	
	@Before
	public void initSpringContext(){
		if(context!=null) return;
		_logger.info("init Spring Context...");
		SimpleDateFormat sdf_ymdhms =new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String startTime=sdf_ymdhms.format(new Date());
		try{
			MyBatisTestRunner runner=new MyBatisTestRunner();
			runner.init();
		}catch(Exception e){
			e.printStackTrace();
		}
		_logger.info("-- --Init Start at " + startTime+" , End at  "+sdf_ymdhms.format(new Date()));
	}
	
	//Initialization ApplicationContext for Project
	public void init(){
		_logger.info("Application dir "+System.getProperty("user.dir"));
		context = new ClassPathXmlApplicationContext(new String[] {"spring/applicationContext.xml"});
		WebContext.applicationContext=context;
		service =(StudentsService)WebContext.getBean("studentsService");
	}
}

版本更新

代码优化

新增find方法,根据过滤器查询数据

新增insertBatch方法

新增deleteBatch方法

删除batchInsert方法

删除batchDelete方法

日志功能优化

缓存调整为caffeine

升级log4j2 2.17.0

展开阅读全文
加载中

作者的其它热门文章

打赏
0
0 收藏
分享
打赏
0 评论
0 收藏
0
分享
返回顶部
顶部