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.....