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Mybatis Jpa Extra

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# MyBatis JPA Extra
- 1、扩展MyBatis支持JPA 2.1接口的单表新增、修改、删除
------
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。
- 2、支持分页查询
- 1、JavaBean注释简单
-
只支持4个注释
> * @Table
> * @Id
> * @Column
> * @GeneratedValue
```java
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.domain.BaseDomain;
/**
* @author Crystal.Sea
*/
@Table(name = "STUDENTS")
public class Students extends BaseDomain 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() {}
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
-
```java
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 insert() throws Exception{
_logger.info("insert...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
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");
ss.insert(student);
Thread.sleep(1000);
ss.remove(student.getId());
}
@Test
public void get() throws Exception{
_logger.info("get...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
Students student=ss.get("921d3377-937a-4578-b1e2-92fb23b5e512");
_logger.info("Students "+student);
}
@Test
public void remove() throws Exception{
_logger.info("remove...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
Students student=new Students();
student.setId("921d3377-937a-4578-b1e2-92fb23b5e512");
ss.remove(student.getId());
}
@Test
public void batchDelete() throws Exception{
_logger.info("batchDelete...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
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");
ss.batchDelete(idList);
}
@Test
public void findAll() throws Exception{
_logger.info("findAll...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
_logger.info("findAll "+ss.findAll());
}
@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 ...");
String path_str=MyBatisTestRunner.class.getResource("ApplicationRunner.properties").getFile().toString();
String appRunnerClassPath=path_str.substring(0,path_str.indexOf("org"));
_logger.info("Application class "+appRunnerClassPath);
System.setProperty("APPRUNNER_CLASSPATH",appRunnerClassPath);
String appRunnerPath=path_str.substring(
path_str.startsWith("/")?1:0,
path_str.indexOf(appRunnerClassPath.split("/")[appRunnerClassPath.split("/").length-1]));
System.setProperty("APPRUNNER_PATH",appRunnerPath);
_logger.info("appRunner dir "+appRunnerPath);
_logger.info("Application dir "+System.getProperty("user.dir"));
context = new ClassPathXmlApplicationContext(new String[] {"spring/applicationContext.xml"});
}
}
```
----------
- 3、支持分页查询
-
```java
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...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
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 "+ss.queryPageResults(student));
}
@Test
public void queryPageResultsByMapperId() throws Exception{
_logger.info("queryPageResults by mapperId...");
WebContext.applicationContext=context;
StudentsService ss=(StudentsService)WebContext.getBean("studentsService");
Students student=new Students();
student.setStdGender("M");
//student.setStdMajor(政治");
student.setPageResults(10);
student.setPage(2);
_logger.info("queryPageResults by mapperId "+ss.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 ...");
String path_str=MyBatisTestRunner.class.getResource("ApplicationRunner.properties").getFile().toString();
String appRunnerClassPath=path_str.substring(0,path_str.indexOf("org"));
_logger.info("Application class "+appRunnerClassPath);
System.setProperty("APPRUNNER_CLASSPATH",appRunnerClassPath);
String appRunnerPath=path_str.substring(
path_str.startsWith("/")?1:0,
path_str.indexOf(appRunnerClassPath.split("/")[appRunnerClassPath.split("/").length-1]));
System.setProperty("APPRUNNER_PATH",appRunnerPath);
_logger.info("appRunner dir "+appRunnerPath);
_logger.info("Application dir "+System.getProperty("user.dir"));
context = new ClassPathXmlApplicationContext(new String[] {"spring/applicationContext.xml"});
}
}
```
----------
- 4、映射文件配置
-
```xml
<mapper namespace="org.apache.mybatis.jpa.test.dao.persistence.StudentsMapper" >
<sql id="sql_condition">
WHERE 1 = 1
<if test="id != null">
AND ID = '${id}'
</if>
<if test="stdName != null and stdName != '' ">
AND STDNAME like '%${stdName}%'
</if>
<if test="stdGender != null and stdGender != '' ">
AND STDGENDER = #{stdGender}
</if>
<if test="stdMajor != null">
<![CDATA[AND STDMAJOR = #{stdMajor}]]>
</if>
</sql>
<select id="queryPageResults" parameterType="Students" resultType="Students">
SELECT
ID ,
STDNO ,
STDNAME ,
STDGENDER ,
STDAGE ,
STDMAJOR ,
STDCLASS
FROM STUDENTS
<include refid="sql_condition"/>
</select>
<select id="queryPageResults1" parameterType="Students" resultType="Students">
SELECT
ID ,
STDNO ,
STDNAME ,
STDGENDER ,
STDAGE ,
STDMAJOR ,
STDCLASS
FROM STUDENTS
<include refid="sql_condition"/>
</select>
<select id="query" parameterType="Students" resultType="Students">
SELECT
ID ,
STDNO ,
STDNAME ,
STDGENDER ,
STDAGE ,
STDMAJOR ,
STDCLASS
FROM ROLES
<include refid="sql_condition"/>
</select>
<delete id="delete" parameterType="Students" >
DELETE FROM STUDENTS WHERE ID=#{id}
</delete>
```
----------
- 5、Spring XML配置
-
```xml
<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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