<typeHandlers>
<typeHandler handler="org.apache.ibatis.type.JsonTypeHandler"/>
</typeHandlers>
<dependency>
<groupId>org.apache.ibatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.6</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.5</version>
</dependency>
CREATE TABLE test_table (
id SERIAL PRIMARY KEY,
json_data JSONB
);
<select id="selectData" parameterType="int" resultType="String">
SELECT json_data FROM test_table WHERE id = #{id}
</select>
<insert id="insertData" parameterType="Map">
INSERT INTO test_table (json_data) VALUES (#{jsonData, typeHandler=org.apache.ibatis.type.JsonTypeHandler})
</insert>
SqlSession session = sqlSessionFactory.openSession();
TestMapper mapper = session.getMapper(TestMapper.class);
String jsonData = mapper.selectData(1);
System.out.println(jsonData);
Map<String, Object> data = new HashMap<>();
data.put("jsonData", "{\"key\": \"value\"}");
mapper.insertData(data);
session.commit();
session.close();
通过以上步骤,就可以实现JSONB与MyBatis的集成配置。在这个过程中,主要是通过配置MyBatis的TypeHandler来支持JSONB数据类型,并在Mapper文件中定义相应的SQL语句和参数映射。最后,通过Java代码来调用MyBatis的接口来执行SQL语句。