ibatis 轻松入门

1、总中的配置文件

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

<!DOCTYPE sqlMapConfig 

PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"

"http://www.ibatis.com/dtd/sql-map-config-2.dtd">

<sqlMapConfig>



<transactionManager type="JDBC"> <!-- 定义了ibatis的事务管理器有3中（JDBC,JTA,EXTERNAL） -->

<dataSource type="SIMPLE"> <!-- type属性指定了数据源的链接类型，也有3种类型(SIMPLE,DBCP,JNDI) -->

<property name="JDBC.Driver" value="com.mysql.jdbc.Driver" />

<property name="JDBC.ConnectionURL" value="jdbc:mysql://localhost/ibatis" />

<property name="JDBC.Username" value="root" />

<property name="JDBC.Password" value="123" />



</dataSource>

</transactionManager>

<sqlMap resource="com/huwei/model/Student.xml" />

</sqlMapConfig>

 

2、映射文件，ibatis 可以将sql语句写在配置文件中

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

<!DOCTYPE sqlMap

PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN"

"http://www.ibatis.com/dtd/sql-map-2.dtd">

<sqlMap>

<typeAlias alias="Student" type="com.huwei.model.Student" />

<select id="selectAllStudent" resultClass="Student">

select * from student

</select>

<select id="selectById" parameterClass="int" resultClass="Student">

select * from student where id=#id#

</select>

<insert id="insertStudent" parameterClass="Student">

insert into Student(name,major)

values (#name#,#major#)

</insert>

<delete id="deleteStudentById" parameterClass="int">

delete from Student where id=#id#

</delete>

</sqlMap>

 

3、实体类

public class Student {

private int id;

private String name;//名字

private String major;//专业

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getMajor() {

return major;

}

public void setMajor(String major) {

this.major = major;

}

@Override

public String toString() {

return "name="+name+" id="+id+" major="+ major;

}



}

 

4、几个主要的dao层方法

public void deleteStudentById(int id) {//根据id删除学生

try {

sqlMapClient.delete("deleteStudentById",id);

} catch (SQLException e) {

e.printStackTrace();

}



}



@Override

public void addStudent(Student student) {//添加学生

try {

sqlMapClient.insert("insertStudent",student);

} catch (SQLException e) {

e.printStackTrace();

}



}

 

5、目录结构如下

6、ibatis总结

个人觉得相比于hibernate，ibatis更加容易上手