(1).创建myBatis.xml配置文件
<?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 = " dbcp.properties" />
< settings>
< setting name = " logImpl" value = " STDOUT_LOGGING" />
</ settings>
< environments default = " development" >
< environment id = " development" >
< transactionManager type = " JDBC" />
< dataSource type = " POOLED" >
< property name = " driver" value = " ${driverClassName}" />
< property name = " url" value = " ${url}" />
< property name = " username" value = " ${username}" />
< property name = " password" value = " ${password}" />
</ dataSource>
</ environment>
</ environments>
< mappers>
< mapper class = " com.dao.IUserDao" />
</ mappers>
</ configuration>
(2).编写实体类
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
private Integer uid;
private String uname;
private String upass;
}
(3).创建实体类对应的接口
public interface IUserDao {
@Select ( "select * from user" )
public List< User> getAllUser ( ) ;
@Select ( "select * from user where uid=#{uid}" )
public User getUserById ( int uid) ;
@Delete ( "delete from user where uid=#{uid}" )
public int deleteUser ( int uid) ;
@Insert ( "insert into user value(#{uid},#{uname},#{upass})" )
public int addUser ( User user) ;
(4).创建工具类
public class SessionUtils {
private static SqlSessionFactory sqlSessionFactory;
private static SqlSession sqlSession;
public static SqlSession getSession ( ) {
try {
sqlSessionFactory = new SqlSessionFactoryBuilder ( ) . build ( Resources. getResourceAsStream ( "MyBaties.xml" ) ) ;
return sqlSessionFactory. openSession ( true ) ;
} catch ( IOException e) {
e. printStackTrace ( ) ;
}
return null;
}
public static void closeSession ( ) {
if ( sqlSession!= null) {
sqlSession. close ( ) ;
sqlSession= null;
}
}
}
(5).创建测试类
public class TestUserDao {
private SqlSession sqlSession;
@Before
public void brfore ( ) {
sqlSession = SessionUtils. getSession ( ) ;
}
@After
public void after ( ) {
SessionUtils. closeSession ( ) ;
}
@Test
public void TestgetAllUser ( ) {
IUserDao iUserDao = sqlSession. getMapper ( IUserDao. class ) ;
List< User> allUser = iUserDao. getAllUser ( ) ;
for ( User user: allUser) {
System. out. println ( user) ;
}
}
@Test
public void TestgetUserById ( ) {
IUserDao iUserDao = sqlSession. getMapper ( IUserDao. class ) ;
User u = iUserDao. getUserById ( 1 ) ;
System. out. println ( u) ;
}
@Test
public void TestDeleteUser ( ) {
IUserDao iUserDao = sqlSession. getMapper ( IUserDao. class ) ;
int i = iUserDao. deleteUser ( 3 ) ;
System. out. println ( i) ;
}
@Test
public void TestAddUser ( ) {
IUserDao iUserDao = sqlSession. getMapper ( IUserDao. class ) ;
User user = new User ( null, "鲁迅" , "888888" ) ;
int i = iUserDao. addUser ( user) ;
System. out. println ( i) ;
}
}