ibatis 使用笔记

ibatis 使用笔记

1.下载ibatis 2.17
http://cvs.apache.org/dist/ibatis/ibatis.java/builds/iBATIS_DBL-2.1.7.597.zip
2.打开MYsql建表


CREATE   TABLE  `category` (


  `catid`  varchar ( 10 )  NOT   NULL ,


  `name`  varchar ( 80 )  default   NULL ,


  `descn`  varchar ( 255 )  default   NULL ,


   PRIMARY   KEY   (`catid`)


) ENGINE = InnoDB  DEFAULT  CHARSET = gb2312;

3.写上配置文件共包括3个配置文件
1.database.properties
2.dao.xml
3.Category.xml
4.sql-map-config.xml

database.properties


driver = org.gjt.mm.mysql.Driver


password = wujun


url = jdbc:mysql: // localhost: 3306 / JPETSTORE


username = root
dao.xml配置文件


<? xml version="1.0" encoding="UTF-8" ?>




<! DOCTYPE daoConfig


    PUBLIC "-//ibatis.apache.org//DTD DAO Configuration 2.0//EN"


    "http://ibatis.apache.org/dtd/dao-2.dtd" >  




< daoConfig >  




   < context >  




     < transactionManager  type ="SQLMAP" >


       < property  name ="SqlMapConfigResource"


        value ="com/wj/firstibatis/sql-map-config.xml" />


     </ transactionManager >  




     < dao  interface ="com.wj.firstibatis.Idao"


      implementation ="com.wj.firstibatis.Dao" />


   </ context >  




</ daoConfig >





sql-map-config.xml配置文件


<? xml version="1.0" encoding="UTF-8"  ?>  




<! DOCTYPE sqlMapConfig PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"


    "http://ibatis.apache.org/dtd/sql-map-config-2.dtd" >  




< sqlMapConfig >  




   < properties  resource ="com/wj/firstibatis/database.properties" />  




   < transactionManager  type ="JDBC" >


     < dataSource  type ="SIMPLE" >


       < property  value ="${driver}"  name ="JDBC.Driver" />


       < property  value ="${url}"  name ="JDBC.ConnectionURL" />


       < property  value ="${username}"  name ="JDBC.Username" />


       < property  value ="${password}"  name ="JDBC.Password" />


     </ dataSource >


   </ transactionManager >  




   < sqlMap  resource ="com/wj/firstibatis/Category.xml" />  






</ sqlMapConfig >





 

Category.xml配置文件


<? xml version="1.0" encoding="UTF-8"  ?>




<! DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"


    "http://ibatis.apache.org/dtd/sql-map-2.dtd" >




< sqlMap  namespace ="Category" >




   < typeAlias  alias ="category"  type ="com.wj.firstibatis.CategoryVO" />




   < cacheModel  id ="categoryCache"  type ="LRU" >


     < flushInterval  hours ="24" />


     < property  name ="size"  value ="100" />


   </ cacheModel >




   < resultMap  id ="categoryResult"  class ="category" >


     < result  property ="categoryId"  column ="CATID" />


     < result  property ="name"  column ="NAME" />


     < result  property ="description"  column ="DESCN" />


   </ resultMap >




   < select  id ="getCategory"  resultClass ="category"  parameterClass ="string"  cacheModel ="categoryCache" >


    SELECT


      CATID AS categoryId,


      NAME,


      DESCN AS description


    FROM CATEGORY


    WHERE CATID = #categoryId#


   </ select >




   < select  id ="getCategoryList"  resultClass ="category"  cacheModel ="categoryCache" >


    SELECT


      CATID AS categoryId,


      NAME,


      DESCN AS description


    FROM CATEGORY


   </ select >




</ sqlMap >





 

写CategoryVO.java


package com.wj.firstibatis;






public class CategoryVO 

{


    private String categoryId;


    private String name;


    private String description;


//getter setter



 

接着写Idao.java接口


package com.wj.firstibatis;




import java.util.List;






public interface Idao 

{


    public List getAll();


    public CategoryVO getById(String categoryId);


}





 

实现类Dao.java


package com.wj.firstibatis;




import java.util.List;


import com.ibatis.dao.client.DaoManager;


import com.ibatis.dao.client.template.SqlMapDaoTemplate;






public class Dao extends SqlMapDaoTemplate  implements Idao

{


         




    public Dao(DaoManager daoManager)

{


        super(daoManager);


    }


    public List getAll()




    

{


        return this.queryForList("getCategoryList", null);


    }


    public CategoryVO getById(String categoryId)




    

{


        return (CategoryVO) queryForObject("getCategory", categoryId);


    }




}





 

测试。。


public   void  getCategoryAll()




    

{


         try




        

{


        DaoManager daoManager  =   null ;


        Reader reader;


        reader  =   new  FileReader( " C:/Documents and Settings/wujun/workspace/ibatisTest/bin/com/wj/firstibatis/dao.xml " );


        // reader = new FileReader("com/wj.firstibatis/dao.xml");


        daoManager  =  DaoManagerBuilder.buildDaoManager(reader);


        daoManager.startTransaction();


        Idao idao  =  (Idao) daoManager.getDao(Idao. class );


        List li = idao.getAll();


         for ( int  i = 0 ;i < li.size();i ++ )




        

{


            CategoryVO vo = (CategoryVO)li.get(i);


            System.out.println( " categoryId " + vo.getCategoryId());


            System.out.println( " Name: " + vo.getName());


            System.out.println( " Descrition: " + vo.getDescription());


        }


        


        }


         catch (Exception ee)




        

{


           log.info( " error: " + ee.getMessage());


        }


    }





成功了.....