package convert;import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;//类型转换器
public class BooleanAndIntConvert extends BaseTypeHandler<Boolean> {public  void setNonNullParameter(PreparedStatement var1, int var2, Boolean var3, JdbcType var4) throws SQLException{if(var3){ //boolean转成int,true则插入到数据库时插入1，反之插入0var1.setInt(var2,1);}else{var1.setInt(var2,0);}}//根据列名获取值public  Boolean getNullableResult(ResultSet var1, String var2) throws SQLException{int sexNum = var1.getInt(var2);if(sexNum == 1)    //从数据库当中获取的值为1时，返回true，反之为falsereturn true;return false;}//根据下标获取值public Boolean getNullableResult(ResultSet var1, int var2)throws SQLException{int sexNum = var1.getInt(var2);if(sexNum == 1)return true;return false;}//通过存储过程获取public Boolean getNullableResult(CallableStatement var1, int var2)throws SQLException{int sexNum = var1.getInt(var2);if(sexNum == 1)return true;return false;}
}

<typeHandlers>
<!--        类型转换器的配置--><typeHandler handler="convert.BooleanAndIntConvert" javaType="Boolean" jdbcType="INTEGER"/></typeHandlers>

"C:\Program Files\Java\jdk-11.0.1\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2019.1.3\lib\idea_rt.jar=56514:C:\Program Files\JetBrains\IntelliJ IDEA 2019.1.3\bin" -Dfile.encoding=UTF-8 -classpath C:\learn\java\mybatis\out\production\mybatis;C:\迅雷下载\mybatis-3.5.2\mybatis-3.5.2\mybatis-3.5.2.jar;C:\迅雷下载\mysql-connector-java-8.0.16.jar entity.test
id:6
姓名：哈哈哈
爱好:跳舞
性别：false
id:7
姓名：哈哈哈
爱好:跳舞
性别：falseProcess finished with exit code 0

<!--    map传值--><select id="selectPersonByNameAndSex" parameterType="HashMap" resultType="person">select * from person where `name` = #{name} or `sex` =#{sex}</select>

List<Person> selectPersonByNameAndSex(Map<String,Object> map);

Map<String, Object> personMap = new HashMap<>();
personMap.put("name","温鸿飞");   //设置变量的值和名字
personMap.put("sex", "false");
List<Person> persons = personMapping.selectPersonByNameAndSex(personMap)

    <select id="selectOneById" resultMap="person_adress_map" parameterType="int">select p.*,a.* from person pinner join adress aon p.id = #{id} and p.adressid=a.id</select><resultMap id="person_adress_map" type="person"><id column="id" property="id"/><result property="name" column="name"/><result property="loves" column="loves"/><result property="sex" column="sex"/><result property="adressId" column="adressid"/><association property="adress" javaType="Adress">  <!--地址的映射--><id column="id" property="id"/><result property="place" column="place"/><result property="number" column="number"/></association></resultMap>

    <!-- 一对多关系 --><select id="selectPersonByClassId" resultMap="class_person_map" parameterType="int">select c.*,p.* from person pinner join class con p.classid=c.classidwhere c.classid=#{classid}</select><resultMap id="class_person_map" type="class"><id column="classId" property="classId"/><result property="number" column="number"/><collection property="persons" ofType="person"><id property="id" column="id"/><result property="name" column="name"/><result property="loves" column="loves"/><result property="sex" column="sex"/><result property="classId" column="classId"/></collection></resultMap>