MyBatis学习笔记_实现CRUD

MyBatis学习笔记，实现简单CRUD，使用了Oracle
源码：https://download.csdn.net/download/qq_35206244/10595114

项目树

我使用ojdbc14的jar出现了连接不上数据库的问题，换了低版本好了

数据库

表pid字段设置了自增，不知道如何实现自增，参考：https://blog.csdn.net/qq_35206244/article/details/81213817

配置

mybatis-config.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="jdbc.properties"></properties>
    <typeAliases>
        <typeAlias type="com.it.mybatis.entity.Person" alias="person"/>
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC" />
            <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>
    <mappers>
        <mapper resource="com/it/mybatis/entity/PersonMapper.xml" />
    </mappers>
</configuration>

jdbc.properties

jdbc.driver=oracle.jdbc.driver.OracleDriver
jdbc.url=jdbc:oracle:thin:@localhost:1521:orcl
jdbc.username=scott
jdbc.password=root

PersonMapper.xml

<?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.it.mybatis.entity">
    <select id="queryById" parameterType="int" resultType="person">
        select * from person where pid = #{pid}
    </select>
    <insert id="add" parameterType="person" >
        <!-- insert into person values(se_per.nextval,#{pname},#{pwd}) -->
        <!-- 数据库已建立触发器 -->
        insert into person(panme,pwd) values(#{pname},#{pwd})
    </insert>
    <update id="update" parameterType="person">
        update person set pname=#{pname}, pwd=#{pwd} where pid=#{pid}
    </update>
    <delete id="delete" parameterType="int">
        delete from person where pid=#{pid}
    </delete>
    <select id="login" parameterType="person" resultType="person">
        select * from person where pid=#{pid} and pwd=#{pwd}
    </select>
    <select id="queryAll" parameterType="person" resultType="person">
        select * from person where 1=1 
        <if test="pname!=''and pname!=null">
          and pname like '%${pname}%'
        </if>
        <if test="pid!=null and pid!=''">
          and pid=#{pid}
        </if>
    </select>



</mapper>

dao

完整源码自行下载

@Override
    public List<Person> queryAll(Person person) {
        SqlSession session=MyBatisUtil.getSession();
        List<Person> list=session.selectList("queryAll",person);
        session.close();
        return list;
    }