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MyBatis JPA Extra对MyBatis进行了扩展，目的在于简化开发的难度，采用了JPA 2.1的注释，无需配置映射的XML文件，使用插件的方式动态生成SQL语句，实现对单表的操作的简化；另外使用Interceptor拦截需要分页的SELECT查询语句，根据不同的数据库完成分页查询。  1、JavaBean注释简单只支持4个注释
@GeneratedValue有3中策略
package org.apache.mybatis.jpa.test.domain;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import org.apache.mybatis.jpa.persistence.JpaBaseDomain;
/*
ID varchar(40) not null,
NAME varchar(60) not null,
STATUS char(1) null,
CREATEBY varchar(40) null,
CREATEDATE date null,
UPDATEBY varchar(40) null,
UPDATEDATE date null,
constraint PK_ROLES primary key clustered (ID)
*/
/**
* @author Crystal.Sea
*
*/
@Table(name = 'STUDENTS')
public class Students extends JpaBaseDomain implements Serializable{
/**
*
*/
private static final long serialVersionUID = -6928570405840778151L;
@Id
@Column
@GeneratedValue(strategy=GenerationType.AUTO,generator='serial')
//@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;
public Students() {
super();
}
public String getStdNo() {
return stdNo;
}
public void setStdNo(String stdNo) {
this.stdNo = stdNo;
}
public String getStdName() {
return stdName;
}
public void setStdName(String stdName) {
this.stdName = stdName;
}
public String getStdGender() {
return stdGender;
}
public void setStdGender(String stdGender) {
this.stdGender = stdGender;
}
public int getStdAge() {
return stdAge;
}
public void setStdAge(int stdAge) {
this.stdAge = stdAge;
}
public String getStdMajor() {
return stdMajor;
}
public void setStdMajor(String stdMajor) {
this.stdMajor = stdMajor;
}
public String getStdClass() {
return stdClass;
}
public void setStdClass(String stdClass) {
this.stdClass = stdClass;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
@Override
public String toString() {
return 'Students [stdNo=' + stdNo + ', stdName=' + stdName + ', stdgender=' + stdGender + ', stdAge=' + stdAge
+ ', stdMajor=' + stdMajor + ', stdClass=' + stdClass + ']';
}
}
2、单表新增、修改、删除、查询3、支持分页查询package org.apache.mybatis.jpa.test;
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.domain.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;
@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.setPageResults(10);
student.setPage(2);
_logger.info('queryPageResults '+service.queryPageResults(student));
}
@Test
public void queryPageResultsByMapperId() throws Exception{
_logger.info('queryPageResults by mapperId...');
Students student=new Students();
student.setStdGender('M');
//student.setStdMajor(政治');
student.setPageResults(10);
student.setPage(2);
_logger.info('queryPageResults by mapperId '+service.queryPageResults('queryPageResults1',student));
}
@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('init ...');
context = new ClassPathXmlApplicationContext(new String[] {'spring/applicationContext.xml'});
WebContext.applicationContext=context;
service =(StudentsService)WebContext.getBean('studentsService');
}
}4、映射文件配置5、Spring XML配置 <tx:annotation-driven transaction-manager='txManager' />
<bean id='txManager' class='org.springframework.jdbc.datasource.DataSourceTransactionManager'>
<property name='dataSource' ref='dataSource' />
</bean>
<!-- enable autowire -->
<context:annotation-config />
<!-- enable transaction demarcation with annotations
<tx:annotation-driven />-->
<!--<bean id='sqlSessionFactory' class='org.mybatis.spring.SqlSessionFactoryBean'>-->
<bean id='sqlSessionFactory' class='org.apache.mybatis.jpa.MyBatisSessionFactoryBean'>
<property name='timeout' value='30' />
<property name='dataSource' ref='dataSource' />
<property name='mapperLocations' value='classpath*:/org/apache/mybatis/jpa/test/dao/persistence/xml/mysql/*.xml' />
<property name='typeAliasesPackage'
value='
org.apache.mybatis.jpa.test.domain,
' />
<property name='transactionFactory'>
<bean class='org.apache.ibatis.transaction.managed.ManagedTransactionFactory' />
</property>
<property name='interceptors'>
<list>
<bean class='org.apache.mybatis.jpa.StatementHandlerInterceptor'>
<property name='dialectString' value='org.apache.mybatis.jpa.dialect.MySQLDialect'/>
</bean>
</list>
</property>
</bean>
<!-- scan for mappers and let them be autowired -->
<bean class='org.mybatis.spring.mapper.MapperScannerConfigurer'>
<property name='basePackage'
value='
org.apache.mybatis.jpa.test.dao.persistence,
' />
</bean>
<!-- enable component scanning (beware that this does not enable mapper scanning!) -->
<context:component-scan base-package='org.apache.mybatis.jpa.test.dao.service' />
<bean class ='org.apache.mybatis.jpa.id.IdentifierGeneratorFactory'>
<property name='generatorStrategyMap' >
<map>
<entry key='serial' >
<bean class='org.apache.mybatis.jpa.id.SerialGenerator'>
<property name='ipAddressNodeValue' value='F0-76-1C-B0-26-9C=02,'/>
</bean></entry>
</map>
</property>
</bean>
<!--
<bean id='sqlSession' class='org.mybatis.spring.SqlSessionTemplate'>
<constructor-arg index='0' ref='sqlSessionFactory' />
</bean>
--> |
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