ibatis学习记录--001
本实例是JavaWeb项目，使用的是Mysql数据库；所需jar包：ibatis-2.3.0.677.jar；mysql-connector-java-5.1.7-bin.jar；
1.基本Java环境搭好后，Eclipse创建JavaWeb项目；导入上述两jar包；
2.创建实体类：com.lxt.entity.I_User;
package com.lxt.ibatis.entity;
public class I_User {
private Integer i_u_id;
private String i_u_name;
private String
i_u_pwd;
public I_User() {
super();
}
public I_User(String
i_u_name, String i_u_pwd) {
super();
this.i_u_name =
i_u_name;
this.i_u_pwd = i_u_pwd;
}
public I_User(Integer i_u_id,
String i_u_name, String i_u_pwd) {
super();
this.i_u_id =
i_u_id;
this.i_u_name = i_u_name;
this.i_u_pwd =
i_u_pwd;
}
public Integer getI_u_id() {
return
i_u_id;
}
public void setI_u_id(Integer i_u_id) {
this.i_u_id =
i_u_id;
}
public String getI_u_name() {
return
i_u_name;
}
public void setI_u_name(String i_u_name)
{
this.i_u_name = i_u_name;
}
public String getI_u_pwd()
{
return i_u_pwd;
}
public void setI_u_pwd(String i_u_pwd)
{
this.i_u_pwd = i_u_pwd;
}
@Override
public String toString()
{
return "I_User [i_u_id=" + i_u_id + ", i_u_name=" + i_u_name
+ ",
i_u_pwd=" + i_u_pwd + "]";
}
}
3.配置实体类文件i_user.xml
<?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>
<typeAlias
alias="I_User" type="com.lxt.ibatis.entity.I_User" />
<!--
这样以后改了sql，就不需要去改java代码了 -->
<!--
id表示select里的sql语句，resultClass表示返回结果的类型 -->
<select
id="selectAllStudent" resultClass="I_User">
select *
from
i_user
</select>
</sqlMap>
4.编写配置文件SqlMap.properties，sqlMapConfig.xml
SqlMap.properties:
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ibatis
username=root
password=root
sqlMapConfig.xml:
<?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>
<!--
引用JDBC属性的配置文件 -->
<properties
resource="com/lxt/ibatis/config/SqlMap.properties" />
<!-- 使用JDBC的事务管理
-->
<transactionManager type="JDBC">
<!-- 数据源
-->
<dataSource type="SIMPLE">
<property name="JDBC.Driver"
value="${driver}" />
<property name="JDBC.ConnectionURL" value="${url}"
/>
<property name="JDBC.Username" value="${username}"
/>
<property name="JDBC.Password" value="${password}"
/>
</dataSource>
</transactionManager>
<!--
这里可以写多个实体的映射文件 -->
<sqlMap resource="com/lxt/ibatis/entity/i_user.xml"
/>
</sqlMapConfig>
4.数据库里创建ibatis数据库和i_user表
5.编写Dao并测试
package com.lxt.ibatis.dao;
import java.io.Reader;
import java.sql.SQLException;
import
java.util.List;
import com.ibatis.common.resources.Resources;
import
com.ibatis.sqlmap.client.SqlMapClient;
import
com.ibatis.sqlmap.client.SqlMapClientBuilder;
import
com.lxt.ibatis.entity.I_User;
public class I_UserDao {
private static SqlMapClient sqlMapClient = null;
static {
try
{
Reader reader =
Resources.getResourceAsReader("com/lxt/ibatis/config/SqlMapConfig.xml");
sqlMapClient
= SqlMapClientBuilder.buildSqlMapClient(reader);
reader.close();
}
catch (Exception e) {
// TODO: handle
exception
e.printStackTrace();
}
}
public
List<I_User> getI_Userlist (){
List<I_User> userlist =
null;
try {
userlist =
sqlMapClient.queryForList("selectAllStudent");
} catch (SQLException e)
{
// TODO Auto-generated catch
block
e.printStackTrace();
}
return
userlist;
}
public static void main(String args[]){
I_UserDao
iud = new I_UserDao();
List<I_User> userlist =
iud.getI_Userlist();
for (I_User i_User : userlist)
{
System.out.println(i_User.toString());
}
}
}
ibatis_001 入门,码迷,mamicode.com