1.新建一个maven工程
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2.在pow.xml导入需要的jar包
<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>
3.创建一个db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybaties?characterEncoding=UTF-8
jdbc.username=root
jdbc.password=123456
4.创建一个Person实体
package com.xdl.entity;
/**
- 人的实体
- @author Administrator
*/
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 + "]";
}
}
5.创建一个PersonVo类
package com.xdl.vo;
import com.xdl.param.CustomPerson;
public class PersonVo {
private CustomPerson customPerson;
public CustomPerson getCustomPerson() {
return customPerson;
}
public void setCustomPerson(CustomPerson customPerson) {
this.customPerson = customPerson;
}
}
6.创建一个CustomPerson类
package com.xdl.param;
import com.xdl.entity.Person;
public class CustomPerson extends Person{
}
7.创建一个SqlMappingConfig.xml
<?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="db.properties">
</properties>
<typeAliases>
<!-- 别名定义 -->
<typeAlias type="com.xdl.entity.Person" alias="person" />
<typeAlias type="com.xdl.vo.PersonVo" alias="personVo" />
</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="PersonMapper.xml" />
</mappers>
</configuration>
8.创建一个PersonMapper接口
package com.xdl.Mapper;
import java.util.List;
import com.xdl.entity.Person;
import com.xdl.vo.PersonVo;
public interface PersonMapper {
public Person selectById(int id);
public List<Person> selectByName(String name);
public void deleteById(int id);
public void updateById(Person person);
public void insert(Person person);
public List<Person> selectByVo(PersonVo personVo);
}
9.创建一个PersonMapper.xml (名字和上方接口要一样)
<?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.xdl.Mapper.PersonMapper">
<sql id="consutomsql">
<if test="customPerson !=null">
<if test="customPerson.name !=null and customPerson.name !=''">
and name="{customPerson.birthday}"
</if>
</if>
</sql>
<select id="selectByVo" parameterType="personVo" resultType="person">
select * from Person
<where>
<include refid="consutomsql"></include>
</where>
</select>
<insert id="insert" parameterType="person">
<selectKey keyProperty="id" order="AFTER" resultType="java.lang.Integer">
select LAST_INSERT_ID()
</selectKey>
insert into Person(name,age,address,birthday) values(#{name},#{age},#{address},#{birthday})
</insert>
<select id="selectById" parameterType="int" resultType="person">
select * from Person where id=#{id}
</select>
<select id="selectByName" parameterType="java.lang.String" resultType="person">
select * from Person where name like "%${value}%"
</select>
<delete id="deleteById" parameterType="int">
delete from Person where id=#{id}
</delete>
<update id="updateById" parameterType="person">
update Person set name=#{name},age=#{age},address=#{address},birthday=#{birthday} where id=#{id}
</update>
</mapper>
10.创建测试类
package com.xdl.test;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
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 com.xdl.Mapper.PersonMapper;
import com.xdl.entity.Person;
import com.xdl.param.CustomPerson;
import com.xdl.vo.PersonVo;
public class Test {
public SqlSessionFactory getfactyory() throws IOException{
String filepath="SqlMappingConfig.xml";
InputStream in = Resources.getResourceAsStream(filepath);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(in);
return sqlSessionFactory;
}
@org.junit.Test
public void testInsert() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactyory();
SqlSession sqlSession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
Person person =new Person();
person.setAddress("北京");
person.setAge(15);
person.setBirthday("05-04");
person.setName("小小明");
personMapper.insert(person);
sqlSession.commit();
sqlSession.close();
}
@org.junit.Test
public void testselect() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactyory();
SqlSession sqlSession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
Person person = personMapper.selectById(1);
System.out.println(person);
sqlSession.commit();
sqlSession.close();
}
@org.junit.Test
public void testselectName() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactyory();
SqlSession sqlSession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
List<Person> person =personMapper.selectByName("小红");
for(int i=0;i<person.size();i++) {
System.out.println(person.get(i));
}
}
@org.junit.Test
public void deleteById() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactyory();
SqlSession sqlSession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
personMapper.deleteById(1);
sqlSession.commit();
sqlSession.close();
}
@org.junit.Test
public void updateById() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactyory();
SqlSession sqlSession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
Person person =new Person();
person.setId(2);
person.setAddress("北");
person.setAge(15);
person.setBirthday("05-04");
person.setName("小天");
personMapper.updateById(person);
sqlSession.commit();
sqlSession.close();
}
@org.junit.Test
public void selectByVo() throws IOException {
SqlSessionFactory sqlSessionFactory = this.getfactyory();
SqlSession sqlSession = sqlSessionFactory.openSession();
PersonMapper personMapper = sqlSession.getMapper(PersonMapper.class);
PersonVo personVo=new PersonVo();
CustomPerson customPerson=new CustomPerson();
customPerson.setName("小红");
customPerson.setBirthday("08-04");
personVo.setCustomPerson(customPerson);
List<Person> person=personMapper.selectByVo(personVo);
for(int i=0;i<person.size();i++){
System.out.println(person.get(i));
}
sqlSession.close();
}
}
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