iBatis学习(一)
iBatis是一个ORM框架，是一种典型的交互式框架
下面构建一个使用iBatis框架的Java应用程序
系统环境
(1)语言：Java，JDK1.8
(2)数据库：MySQL5.7.11
(3)依赖JAR包：ibatis-2.3.3.720.jar、mysql-connector-java-5.1.38-bin.jar
(4)开发工具：Eclispe
项目结构
数据库表dept结构
POJO类
package gc.ibatis.model;
/**
* 2016-03-20
* @author Administrator
* 部门信息POJO类
*/
public class Dept {
private Integer deptNo;
private String deptName;
private String deptLocation;
public Integer getDeptNo() {
return deptNo;
}
public void setDeptNo(Integer deptNo) {
this.deptNo = deptNo;
}
public String getDeptName() {
return deptName;
}
public void setDeptName(String deptName) {
this.deptName = deptName;
}
public String getDeptLocation() {
return deptLocation;
}
public void setDeptLocation(String deptLocation) {
this.deptLocation = deptLocation;
}
@Override
public String toString() {
return "[" + "deptNo:" + deptNo + ",deptName:" + deptName + ",deptLocation:" + deptLocation + "]";
}
}
JDBC配置文件
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/myTestDB username=root password=root
Dept.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> <typeAlias alias="Dept" type="gc.ibatis.model.Dept"></typeAlias> <select id="getAllDepts" resultClass="Dept"> SELECT * FROM DEPT </select> <insert id="addDept" parameterClass="Dept"> INSERT INTO DEPT(deptName, deptLocation) VALUES(#deptName#, #deptLocation#) <selectKey resultClass="int" keyProperty="deptNo"> select @@identity as inserted </selectKey> </insert> </sqlMap>
SqlMapConfig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="jdbc.properties"/>
<transactionManager type="JDBC">
<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>
<sqlMap resource="gc/ibatis/model/Dept.xml" />
</sqlMapConfig>
DAO接口
package gc.ibatis.dao;
import java.util.List;
import gc.ibatis.model.Dept;
/**
* 2016-03-20
* @author Administrator
* 部门信息DAO
*/
public interface DeptDao {
/**
* 查询所有的部门信息
* @return
*/
List<Dept> getAllDepts();
/**
* 添加一个部门信息
* @param dept
* @return
*/
boolean addDept(Dept dept);
}
Impl类
package gc.ibatis.daoImpl;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import gc.ibatis.dao.DeptDao;
import gc.ibatis.model.Dept;
import gc.ibatis.util.IBatisSqlClientUtil;
public class DeptDaoImpl implements DeptDao {
@SuppressWarnings("unchecked")
@Override
public List<Dept> getAllDepts() {
List<Dept> depts = new ArrayList<Dept>();
try {
depts = IBatisSqlClientUtil.getSqlMapClient().queryForList("getAllDepts");
} catch (SQLException e) {
e.printStackTrace();
}
return depts;
}
@Override
public boolean addDept(Dept dept) {
boolean rs = false;
try {
if(IBatisSqlClientUtil.getSqlMapClient().insert("addDept", dept) != null) {
rs = true;
}
} catch (SQLException e) {
e.printStackTrace();
}
return rs;
}
}
工具类
package gc.ibatis.util;
import java.io.IOException;
import java.io.Reader;
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
/**
* 2016-03-20
* @author Administrator
* 获取SqlMapClient的工具类
*/
public class IBatisSqlClientUtil {
private static final String CONFIG_FILE_PATH = "gc/ibatis/model/resources/SqlMapConfig.xml";
private static Reader reader = null;
static {
try {
reader = Resources.getResourceAsReader(CONFIG_FILE_PATH);
} catch (IOException e) {
e.printStackTrace();
}
}
public static SqlMapClient getSqlMapClient() {
return SqlMapClientBuilder.buildSqlMapClient(reader);
}
}
JUnit4测试类
package gc.ibatis.test;
import java.util.List;
import org.junit.Assert;
import org.junit.Test;
import gc.ibatis.dao.DeptDao;
import gc.ibatis.daoImpl.DeptDaoImpl;
import gc.ibatis.model.Dept;
/**
* 2016-03-20
* @author Administrator
* IBatis测试类
*/
public class IBatisTest {
private DeptDao deptDao = new DeptDaoImpl();
@Test
public void test() {
List<Dept> depts = deptDao.getAllDepts();
Assert.assertEquals(1, depts.size());
}
@Test
public void testAddDept() {
Dept dept = new Dept();
dept.setDeptName("帮购");
dept.setDeptLocation("浙江温州");
Assert.assertEquals(true, deptDao.addDept(dept));
}
}