I had a very weird error today, when connecting MyBatis to Oracle Database, the complete error is like this,

Error setting null for parameter #2 with JdbcType OTHER . 
Try setting a different JdbcType for this parameter or a different jdbcTypeForNull configuration property. 
Cause: java.sql.SQLException: Invalid column type: 1111

After researching for a while, i found out that it happen because i miss to fill a parameter on mybatis xml query file. This is my xml file,

<?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="mybatistesting.MyMapper" >    
    <select resultType="java.util.Map" id="select" parameterType="java.util.Map">
        SELECT
            *
        FROM
            RISALAH
        WHERE UUID = #{UUID} AND CONTENT = #{CONTENT}
    </select>
</mapper>

And this is my main java file,

package mybatistesting;

import java.util.HashMap;
import java.util.Map;
import mybatistesting.config.MyBatisSqlSessionFactory;
import org.apache.ibatis.session.SqlSession;

public class MyBatisTesting {

    public static void main(String[] args) throws Exception {
        SqlSession sqlSession = MyBatisSqlSessionFactory.getSqlSessionFactory().openSession(true);
        MyMapper mapper = sqlSession.getMapper(MyMapper.class);
        Map map1 = new HashMap();
        map1.put("UUID", "1");
        for (Map map : mapper.select(map1)) {
            System.out.println("map "+map);
        }
    }
}

As you can see, i only set UUID as query parameter on my java file, despite that i need at least 2 parameter on my xml file. Here is how to fix it,

package mybatistesting;

import java.util.HashMap;
import java.util.Map;
import mybatistesting.config.MyBatisSqlSessionFactory;
import org.apache.ibatis.session.SqlSession;

public class MyBatisTesting {

    public static void main(String[] args) throws Exception {
        SqlSession sqlSession = MyBatisSqlSessionFactory.getSqlSessionFactory().openSession(true);
        MyMapper mapper = sqlSession.getMapper(MyMapper.class);
        Map map1 = new HashMap();
        map1.put("UUID", "1");
        map1.put("CONTENT", "1");
        for (Map map : mapper.select(map1)) {
            System.out.println("map "+map);
        }
    }
}

Hope it helps others, cheers 😉