SpringBoot中MyBatis处理JSONObject和J

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.7</version>
</dependency>

@MappedTypes(JSONArray.class)
@MappedJdbcTypes(JdbcType.VARCHAR)
public class ArrayJsonHandler extends BaseTypeHandler<JSONArray> {
    //设置非空参数
    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, JSONArray parameter, JdbcType jdbcType) throws SQLException {
        ps.setString(i, String.valueOf(parameter.toJSONString()));
    }
    //根据列名，获取可以为空的结果
    @Override
    public JSONArray getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String sqlJson = rs.getString(columnName);
        if (null != sqlJson){
            return JSONArray.parseArray(sqlJson);
        }
        return null;
    }
    //根据列索引，获取可以为空的结果
    @Override
    public JSONArray getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        String sqlJson = rs.getString(columnIndex);
        if (null != sqlJson){
            return JSONArray.parseArray(sqlJson);
        }
        return null;
    }
 
    @Override
    public JSONArray getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        String sqlJson = cs.getString(columnIndex);
        if (null != sqlJson){
            return JSONArray.parseArray(sqlJson);
        }
        return null;
    }
 
}

@MappedTypes(JSONObject.class)
@MappedJdbcTypes(JdbcType.VARCHAR)
public class ObjectJsonHandler extends BaseTypeHandler<JSONObject>{
 
    //设置非空参数
    @Override
    public void setNonNullParameter(PreparedStatement ps, int i, JSONObject parameter, JdbcType jdbcType) throws SQLException {
        ps.setString(i, String.valueOf(parameter.toJSONString()));
    }
    //根据列名，获取可以为空的结果
    @Override
    public JSONObject getNullableResult(ResultSet rs, String columnName) throws SQLException {
        String sqlJson = rs.getString(columnName);
        if (null != sqlJson){
            return JSONObject.parseObject(sqlJson);
        }
        return null;
    }
    //根据列索引，获取可以为空的结果
    @Override
    public JSONObject getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
        String sqlJson = rs.getString(columnIndex);
        if (null != sqlJson){
            return JSONObject.parseObject(sqlJson);
        }
        return null;
    }
 
    @Override
    public JSONObject getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
        String sqlJson = cs.getString(columnIndex);
        if (null != sqlJson){
            return JSONObject.parseObject(sqlJson);
        }
        return null;
    }
}

#配置mybaits自定义类型转换类所在的包
mybatis.type-handlers-package=com.hl.handler

原博文请查看https://blog.csdn.net/LiXiuu/article/details/88970255