MyBatis+Spring

约定不等于承诺〃 2022-08-08 13:51 75阅读 0赞

**转自：[http://kinglixing.blog.51cto.com/3421535/723870][http_kinglixing.blog.51cto.com_3421535_723870]**

在网上查了MyBatis+Spring的结合,真的是太多太多了,可是没有几个代码是完整的..这两项整合花了我两天时间,终于被我整合完成...其实也很简单,原因:JAR包的问题...

由于Ibatis被改名为MyBatis,所以,网上很多都是有关Ibatis而MyBatis却很少很少...

本文以MyBatis3.0.6 + Spring3.0.6为例结合(一定要这个版本才行):

定义一个实体类: Emp.java

package com.lixing.scm.entity;  
  
public  class Emp \{  
   private String id;  
   private String name;  
   private String sex;  
   private  int age;  
   private String phone;  
   public String getId() \{  
     return id;  
  \}  
   public  void setId(String id) \{  
     this.id = id;  
  \}  
   public String getName() \{  
     return name;  
  \}  
   public  void setName(String name) \{  
     this.name = name;  
  \}  
   public String getSex() \{  
     return sex;  
  \}  
   public  void setSex(String sex) \{  
     this.sex = sex;  
  \}  
   public  int getAge() \{  
     return age;  
  \}  
   public  void setAge( int age) \{  
     this.age = age;  
  \}  
   public String getPhone() \{  
     return phone;  
  \}  
   public  void setPhone(String phone) \{  
     this.phone = phone;  
  \}  
\}

定义实体内操作接口:EmpMapper.java

package com.lixing.scm.test.mapper;  
  
import java.util.List;  
import java.util.Map;  
  
import com.lixing.scm.entity.Emp;  
  
public  interface EmpMapper \{  
   void insertEmp(Emp emp);  
  List<Emp> getAllEmp();  
  Emp getById(String id);  
   void deleteEmp(String id);  
   void updateEmp(Map<String,Object> map);  
\}

定义实体类操作接口的映射文件:EmpMapper.xml

<? xml  version ="1.0"  encoding ="UTF-8"  ?>   
<!DOCTYPE mapper        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"          
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">   
< mapper  namespace ="com.lixing.scm.test.mapper.EmpMapper" >   
   < parameterMap  type ="com.lixing.scm.entity.Emp"  id ="parameterMapEmp" >  
     < parameter  property ="id" />  
     < parameter  property ="name" />  
     < parameter  property ="sex" />  
     < parameter  property ="age" />  
     < parameter  property ="phone" />  
   </ parameterMap >  
    
   < resultMap  type ="com.lixing.scm.entity.Emp"  id ="resultMapEmp" >  
     < result  property ="id"  column ="id" />  
     < result  property ="name"  column ="name" />  
     < result  property ="sex"  column ="sex" />  
     < result  property ="age"  column ="age" />  
     < result  property ="phone"  column ="phone" />  
   </ resultMap >  
    
   < insert  id ="insertEmp"  parameterMap ="parameterMapEmp" >  
    INSERT INTO emp(id,name,sex,age,phone)  
    VALUES(?,?,?,?,?)  
   </ insert >  
   < select  id ="getAllEmp"     resultMap ="resultMapEmp" >  
    SELECT \* FROM emp  
   </ select >  
   < select  id ="getById"  parameterType ="String"  resultMap ="resultMapEmp" >  
    SELECT \* FROM emp  
    WHERE id=\#\{value\}  
   </ select >  
   < delete  id ="deleteEmp"  parameterType ="String" >  
    DELETE FROM emp   
    WHERE id=\#\{value\}  
   </ delete >  
   < update  id ="updateEmp"  parameterType ="java.util.Map" >  
    UPDATE emp  
    SET name=\#\{name\},sex=\#\{sex\},age=\#\{age\},phone=\#\{phone\}  
    WHERE id=\#\{id\}  
   </ update >  
</ mapper >

Spring3.0.6定义: applicationContext.xml

<? xml  version ="1.0"  encoding ="UTF-8" ?>  
< beans  xmlns ="http://www.springframework.org/schema/beans"  
   xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"   
   xmlns:context ="http://www.springframework.org/schema/context"  
   xmlns:aop ="http://www.springframework.org/schema/aop"  
   xmlns:tx ="http://www.springframework.org/schema/tx"  
  xsi:schemaLocation="http://www.springframework.org/schema/beans   
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
         http://www.springframework.org/schema/context  
         http://www.springframework.org/schema/context/spring-context-3.0.xsd  
         http://www.springframework.org/schema/tx  
         http://www.springframework.org/schema/tx/spring-tx-3.0.xsd  
         http://www.springframework.org/schema/aop   
         http://www.springframework.org/schema/aop/spring-aop-3.0.xsd" >  
  
    
   < context:annotation-config  />  
   < context:component-scan  base-package ="com.lixing.scm.test.\*"  />  
  
  
    
   < bean  
     class ="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >  
     < property  name ="locations"  value ="classpath:jdbc.properties"  />  
   </ bean >  
  
   < bean  id ="MyDataSource"  destroy-method ="close"  
     class ="org.apache.commons.dbcp.BasicDataSource" >  
     < property  name ="driverClassName"  value ="$\{jdbc.driverClassName\}"  />  
     < property  name ="url"  value ="$\{jdbc.url\}"  />  
     < property  name ="username"  value ="$\{jdbc.username\}"  />  
     < property  name ="password"  value ="$\{jdbc.password\}"  />  
   </ bean >  
  
    
   < bean  id ="sqlSessionFactory"  class ="org.mybatis.spring.SqlSessionFactoryBean" >  
     < property  name ="dataSource"  ref ="MyDataSource"  />  
   </ bean >  
    
   < bean  class ="org.mybatis.spring.mapper.MapperScannerConfigurer" >  
     < property  name ="basePackage"  value ="com.lixing.scm.test.mapper"  />  
   </ bean >  
  
  
  
    
   < bean  name ="transactionManager"  class ="org.springframework.jdbc.datasource.DataSourceTransactionManager" >       
           < property  name ="dataSource"  ref ="MyDataSource" > </ property >  
     </ bean >       
    
   < tx:advice  id ="userTxAdvice"  transaction-manager ="transactionManager" >  
     < tx:attributes >  
       < tx:method  name ="delete\*"  propagation ="REQUIRED"  read-only ="false"   
                             rollback-for ="java.lang.Exception"  no-rollback-for ="java.lang.RuntimeException" />  
       < tx:method  name ="insert\*"  propagation ="REQUIRED"  read-only ="false"   
                             rollback-for ="java.lang.RuntimeException"  />  
       < tx:method  name ="update\*"  propagation ="REQUIRED"  read-only ="false"   
                             rollback-for ="java.lang.Exception"  />  
        
       < tx:method  name ="find\*"  propagation ="SUPPORTS" />  
       < tx:method  name ="get\*"  propagation ="SUPPORTS" />  
       < tx:method  name ="select\*"  propagation ="SUPPORTS" />  
     </ tx:attributes >  
   </ tx:advice >  
    
   < aop:config >      
     < aop:pointcut  id ="pc"  expression ="execution(public \* com.lixing.scm.test.service.\*.\*(..))"  />   
     < aop:advisor  pointcut-ref ="pc"  advice-ref ="userTxAdvice"  />  
   </ aop:config >  
    
    
    
   < bean  id ="empDao"  class ="com.lixing.scm.test.dao.impl.EmpDaoImpl"  
     autowire ="byName"  />    
   < bean  id ="empService"  class ="com.lixing.scm.test.service.impl.EmpServiceImpl"     autowire ="byName" />  
</ beans >

DAO接口:EmpDAO.java

package com.lixing.scm.test.dao;  
  
import java.util.List;  
import java.util.Map;  
  
import com.lixing.scm.entity.Emp;  
  
public  interface EmpDao \{  
   void insertEmp(Emp emp);  
  List<Emp> getAllEmp();  
  Emp getById(String id);  
   void deleteEmp(String id);  
   void updateEmp(Map<String, Object> map);  
\}

DAO接口实现类：EmpDaoImpl.java

package com.lixing.scm.test.dao.impl;  
  
import java.util.List;  
import java.util.Map;  
  
import com.lixing.scm.entity.Emp;  
import com.lixing.scm.test.dao.EmpDao;  
import com.lixing.scm.test.mapper.EmpMapper;  
  
public class EmpDaoImpl implements EmpDao \{  
  private EmpMapper empMapper;    //在此处注入一个empMapper  
//这个empMapper由 Spring自动生成//不需要我们自己手工去定义  
  @Override  
   public  void insertEmp(Emp emp) \{  
     this.empMapper.insertEmp(emp);  
     throw  new RuntimeException( "Error");    //测试抛出RuntimeException//异常查看数据库是否存在记录  
  \}  
  
  @Override  
   public  void deleteEmp(String id) \{  
     this.empMapper.deleteEmp(id);  
  \}  
  
  @Override  
   public List<Emp> getAllEmp() \{  
     return  this.empMapper.getAllEmp();  
  \}  
  
  @Override  
   public Emp getById(String id) \{  
     return  this.empMapper.getById(id);  
  \}  
  
  @Override  
   public  void updateEmp(Map<String, Object> map) \{  
     this.empMapper.updateEmp(map);  
  \}  
  
    
   public EmpMapper getEmpMapper() \{  
     return empMapper;  
  \}  
  
   public  void setEmpMapper(EmpMapper empMapper) \{  
     this.empMapper = empMapper;  
  \}  
\}

Service层接口:EmpService.java

package com.lixing.scm.test.service;  
  
import com.lixing.scm.entity.Emp;  
  
public  interface EmpService \{  
   void insertEmp(Emp emp);  
\}

Service层接口实现类:EmpServiceImpl.java

package com.lixing.scm.test.service.impl;  
  
import com.lixing.scm.entity.Emp;  
import com.lixing.scm.test.dao.EmpDao;  
import com.lixing.scm.test.service.EmpService;  
  
public  class EmpServiceImpl  implements EmpService \{  
   private EmpDao empDao;  
  
  @Override  
   public  void insertEmp(Emp emp) \{  
    empDao.insertEmp(emp);  
  
  \}  
  
   public EmpDao getEmpDao() \{  
     return empDao;  
  \}  
  
   public  void setEmpDao(EmpDao empDao) \{  
     this.empDao = empDao;  
  \}  
\}

测试类:TestEmpService.java

import org.junit.Test;  
import org.springframework.context.ApplicationContext;  
import org.springframework.context.support.ClassPathXmlApplicationContext;  
  
import com.lixing.scm.entity.Emp;  
import com.lixing.scm.test.service.EmpService;  
  
  
public  class TestEmpService \{  
  @Test  
   public  void testTrasaction()\{  
    Emp emp= new Emp();  
    emp.setId( "00000003");  
    emp.setName( "某某某");  
    emp.setAge(50);  
    emp.setSex( "男");  
    emp.setPhone( "566666");  
      
    ApplicationContext ctx= new ClassPathXmlApplicationContext( "classpath:applicationContext.xml");  
    EmpService service=ctx.getBean(EmpService. class);  
    service.insertEmp(emp);  
  \}  
\}

[http_kinglixing.blog.51cto.com_3421535_723870]: http://kinglixing.blog.51cto.com/3421535/723870

MyBatis+Spring

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