1.pom.xml配置信息
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
</dependencies>
测试类：
public class Person {
private int id;
private String name;
private int age;
private String address;
private String birthday;
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 int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getBirthday() {
return birthday;
}
public void setBirthday(String birthday) {
this.birthday = birthday;
}
@Override
public String toString() {
return "Person [id=" + id + ", name=" + name + ", age=" + age + ", address=" + address + ", birthday="
+ birthday + "]";
}
}
sql语句xml配置：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="test1">
<select id="querypersonbyid" parameterType="int" resultType="person">
select id,name,age,birthday,address from Person where id = #{value}
</select> <select id="querypersonbyname" parameterType="java.lang.String" resultType="person">
select id,name,age,birthday,address from Person where name like "%${value}%"
</select> <insert id="inserperson" parameterType="person">
<selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer">
SELECT LAST_INSERT_ID()
</selectKey>
insert into Person(name,age,address,birthday) value(#{name},#{age},#{address},#{birthday})
</insert> <delete id="deletepersonbyid" parameterType="int">
delete from Person where id = #{id}
</delete> <delete id="updatepersonbyid" parameterType="person">
update Person set name=#{name},age=#{age},birthday=#{birthday},address=#{address} where id = #{id}
</delete> </mapper>
数据库访问配置：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration> <!-- 加载属性文件 -->
<properties resource="db.properties">
<!--properties中还可以配置一些属性名和属性值 -->
<!-- <property name="jdbc.driver" value=""/> -->
</properties> <typeAliases>
<!-- 别名定义 -->
<typeAlias type="com.youfan.entity.Person" alias="person" />
</typeAliases> <environments default="development">
<environment id="development">
<!-- 使用jdbc事务管理，事务控制由mybatis -->
<transactionManager type="JDBC" />
<!-- 数据库连接池，由mybatis管理 -->
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</dataSource>
</environment>
</environments> <!-- 加载 映射文件 -->
<mappers>
<!--通过resource方法一次加载一个映射文件 -->
<!--注意这里的路径和xml文件 -->
<mapper resource="Person.xml" /> </mappers> </configuration>
TestMybatis：
import java.io.IOException;
import java.io.InputStream;
import java.util.List; import com.sun.org.apache.xpath.internal.SourceTree;
import com.youfan.entity.Person;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test; import java.io.InputStream; public class TestMybatis {
public SqlSessionFactory getfactory() throws IOException {
String filepath="SqlMappingConfig.xml";
InputStream in = Resources.getResourceAsStream(filepath);
SqlSessionFactory sqlSessionFactory=new SqlSessionFactoryBuilder().build(in);
return sqlSessionFactory;
}
@Test
public void testinsert() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
Person person = new Person();
person.setName("小高");
person.setAddress("上海");
person.setAge(15);
person.setBirthday("05-04");
sqlsession.insert("test1.inserperson", person);
System.out.println("id "+person.getId());
sqlsession.commit();
sqlsession.close();
} @Test
public void testquerybyid() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
Person person = sqlsession.selectOne("querypersonbyid", 6);
System.out.println(person);
sqlsession.close();
}
@Test
public void testquerybyname() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
List<Person> personlist = sqlsession.selectList("querypersonbyname", "小高");
for(int i=0;i<personlist.size();i++){
System.out.println(personlist.get(i));
}
sqlsession.close();
} @Test
public void testdeletebyid() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
sqlsession.delete("deletepersonbyid", 6);
sqlsession.commit();
sqlsession.close();
} @Test
public void testupdatePerson() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
Person person = new Person();
person.setId(2);
person.setName("有范");
person.setAddress("北京");
person.setAge(15);
person.setBirthday("06-04");
sqlsession.update("updatepersonbyid", person);
sqlsession.commit();
sqlsession.close();
}
}
表字段：
用映射方法写：
mapper：
public interface PersonMapper {
public Person querypersonbyid(int id);
public List<Person> querypersonbyname(String name);
public void inserperson(Person person);
public void deletepersonbyid(int id);
public void updatepersonbyid(Person person);
public List<Person> querypersonbyvo(PersonVo personVo);
}
视图对象vo：
public class CustomPerson extends Person{
}
public class PersonVo {
private CustomPerson customPerson;
public CustomPerson getCustomPerson() {
return customPerson;
}
public void setCustomPerson(CustomPerson customPerson) {
this.customPerson = customPerson;
}
}
语句：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.youfan.mapper.PersonMapper">
<sql id="consutomsql" >
<if test="customPerson != null">
<if test="customPerson.name!=null and customPerson.name!=''">
and name = "${customPerson.name}"
</if>
<if test="customPerson.birthday!=null and customPerson.birthday!='' ">
and birthday = "${customPerson.birthday}"
</if>
</if>
</sql>
<select id="querypersonbyvo" parameterType="personVo" resultType="person">
select * from Person
<where>
<include refid="consutomsql"></include>
</where>
</select>
<select id="querypersonbyid" parameterType="int" resultType="person">
select id,name,age,birthday,address from Person where id = #{value}
</select> <select id="querypersonbyname" parameterType="java.lang.String" resultType="person">
select id,name,age,birthday,address from Person where name like "%${value}%"
</select> <insert id="inserperson" parameterType="person">
<selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer">
SELECT LAST_INSERT_ID()
</selectKey>
insert into Person(name,age,address,birthday) value(#{name},#{age},#{address},#{birthday})
</insert> <delete id="deletepersonbyid" parameterType="int">
delete from Person where id = #{id}
</delete> <delete id="updatepersonbyid" parameterType="person">
update Person set name=#{name},age=#{age},birthday=#{birthday},address=#{address} where id = #{id}
</delete> </mapper>
测试：
public class TestMybatis {
public SqlSessionFactory getfactory() throws IOException{
String filepath = "SqlMappingConfig.xml";
InputStream in = Resources.getResourceAsStream(filepath);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(in);
return sqlSessionFactory;
}
@Test
public void testinsert() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlsession.getMapper(PersonMapper.class);
Person person = new Person();
person.setName("小白");
person.setAddress("上海");
person.setAge(15);
person.setBirthday("05-04");
personMapper.inserperson(person);
System.out.println("id "+person.getId());
sqlsession.commit();
sqlsession.close();
}
@Test
public void testquerybyid() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlsession.getMapper(PersonMapper.class);
Person person = personMapper.querypersonbyid(2);
System.out.println(person);
sqlsession.close();
}
@Test
public void testquerybyname() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlsession.getMapper(PersonMapper.class);
List<Person> personlist = personMapper.querypersonbyname("小");
for(int i=0;i<personlist.size();i++){
System.out.println(personlist.get(i));
}
sqlsession.close();
}
@Test
public void testdeletebyid() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlsession.getMapper(PersonMapper.class);
personMapper.deletepersonbyid(2);
sqlsession.commit();
sqlsession.close();
}
@Test
public void testupdatePerson() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlsession.getMapper(PersonMapper.class);
Person person = new Person();
person.setId(3);
person.setName("老石");
person.setAddress("北京");
person.setAge(15);
person.setBirthday("07-04");
personMapper.updatepersonbyid(person);
sqlsession.commit();
sqlsession.close();
}
@Test
public void testquerypersonbyvo() throws IOException{
SqlSessionFactory sqlSessionFactory = this.getfactory();
SqlSession sqlsession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlsession.getMapper(PersonMapper.class);
PersonVo personVo = new PersonVo();
CustomPerson customPerson = new CustomPerson();
customPerson.setName("老石");
customPerson.setBirthday("07-04");
personVo.setCustomPerson(customPerson);
List<Person> personlist = personMapper.querypersonbyvo(personVo);
for(int i=0;i<personlist.size();i++){
System.out.println(personlist.get(i));
}
sqlsession.close();
}
}