mybatis连接oracle

本文实现mybatis连接oracle,并做增删改查操作。

新建一个maven项目——myoracle。项目架构如下：

先导入pom依赖：

  <properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency><dependency><groupId>com.oracle</groupId><artifactId>ojdbc6</artifactId><version>11.2.0.1.0</version></dependency><!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.4.6</version></dependency></dependencies>

创建实体类——Userinfos.java

package cn.alisa.myoracle.entity;import java.util.Date;public class Userinfos {private int userid;private String username;private Date birthday;private float userhight;public int getUserid() {return userid;}public void setUserid(int userid) {this.userid = userid;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public Date getBirthday() {return birthday;}public void setBirthday(Date birthday) {this.birthday = birthday;}public float getUserhight() {return userhight;}public void setUserhight(float userhight) {this.userhight = userhight;}
}

创建接口类——UserinfosDAO.java

package cn.alisa.myoracle.dao;import cn.alisa.myoracle.entity.Userinfos;import java.util.List;public interface UserinfosDAO {public void saveUser(Userinfos user);public void delUser(int userid);public void updateUser(Userinfos user);public List<Userinfos> findAll();public Userinfos findByid(int userid);public void batchInsertUser(List<Userinfos> users);
}

创建mybatis.cfg.xml

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases><typeAlias type="cn.alisa.myoracle.entity.Userinfos" alias="userinfos"></typeAlias>
</typeAliases><environments default="alisa"><environment id="alisa"><transactionManager type="JDBC"></transactionManager><dataSource type="POOLED"><property name="driver" value="oracle.jdbc.driver.OracleDriver"/><property name="url" value="jdbc:oracle:thin:@192.168.21.200:1521:orcl"/><property name="username" value="alisa"/><property name="password" value="alisa"/></dataSource></environment></environments><mappers><mapper resource="mapper/userinfos.xml"></mapper></mappers>
</configuration>

在mapper文件夹下创建userinfos.xml

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.alisa.myoracle.dao.UserinfosDAO"><insert id="saveUser" parameterType="userinfos">insert into userinfos values(seq_user_userid.nextVal,#{username},#{birthday},#{userhight})</insert><delete id="delUser" parameterType="int">delete from userinfos where userid=#{userid}</delete><update id="updateUser" parameterType="userinfos">update userinfos set username=#{username},birthyear=#{birthday},userhight=#{userhight} where userid=#{userid}</update><select id="findAll" resultType="userinfos">select userid,username,birthyear,userhight from userinfos</select><select id="findByid" parameterType="int" resultType="userinfos">select userid,username,birthyear,userhight from userinfos where userid=#{userid}</select><insert id="batchInsertUser" parameterType="list">insert into userinfos select seq_user_userid.nextVal,username,birthyear,userhight from<foreach collection="list" separator=" union " item="us" open="(" close=")">select #{us.username} username,#{us.birthday} birthyear,#{us.userhight} userhight from dual</foreach></insert>
</mapper>

创建测试类——MyTest.java

package cn.alisa.myoracle.demo;import cn.alisa.myoracle.dao.UserinfosDAO;
import cn.alisa.myoracle.entity.Userinfos;
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 java.io.Reader;
import java.util.ArrayList;
import java.util.List;public class MyTest {public static void main(String[] args) throws Exception{Reader reader = Resources.getResourceAsReader("mybatis.cfg.xml");SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(reader);SqlSession session = factory.openSession();UserinfosDAO udao = session.getMapper(UserinfosDAO.class);
//        System.out.println(udao.findAll());List<Userinfos> uss=new ArrayList<Userinfos>();//添加一个用户/*Userinfos user = new Userinfos();user.setUsername("hehe");user.setBirthday(new java.util.Date());user.setUserhight(182.6f);udao.saveUser(user);*/Userinfos user1 = new Userinfos();user1.setUsername("xixi");user1.setBirthday(new java.util.Date());user1.setUserhight(178.3f);Userinfos user2 = new Userinfos();user2.setUsername("cc");user2.setBirthday(new java.util.Date());user2.setUserhight(176.1f);uss.add(user1);uss.add(user2);udao.batchInsertUser(uss);session.commit();session.close();}
}

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