mybatis3.X入门学习demo

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc\:mysql\://localhost\:3307/test?autoReconnect\=true&useUnicode\=true&characterEncoding\=utf8
jdbc.username=root
jdbc.password=root

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<properties resource="config.properties"/>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
</environments>
<mappers>

<mapper  resource="com/ibatis/pojo/user.xml" />
</mappers>
</configuration>

package com.ibatis.pojo;

public class User {

public  int id;
public String username;
public String password;
public String address;
public  String  ad;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getAd() {
return ad;
}
public void setAd(String ad) {
this.ad = ad;
}

}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"
"http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">

<mapper namespace="ddd">
<select id="getAllUsers"  resultType="com.ibatis.pojo.User">
select * from user
</select>
</mapper>

Reader reader = Resources.getResourceAsReader(resource);
SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(reader);
SqlSession session = ssf.openSession();try {
List<User> selectList = session.selectList("ddd.getAllUsers");
int size = selectList.size();
System.out.println(size);
System.out.println(selectList.get(0).getAddress());
} catch (Exception e) {
e.printStackTrace();
} finally {
session.close();
}