在 MyBatis 中實現 JSONB 數據的批量操作,可以通過以下步驟進行:
public class JsonbData {
private Map<String, Object> data;
// getters and setters
}
public interface JsonbDataMapper {
void insertBatchJsonbData(List<JsonbData> jsonbDataList);
void updateBatchJsonbData(List<JsonbData> jsonbDataList);
}
<insert id="insertBatchJsonbData" parameterType="java.util.List">
INSERT INTO jsonb_table (jsonb_column)
VALUES
<foreach collection="list" item="jsonbData" separator=",">
(#{jsonbData.data, typeHandler=com.fasterxml.jackson.databind.JsonNode})
</foreach>
</insert>
public class JsonbTypeHandler extends BaseTypeHandler<Object> {
private static final ObjectMapper objectMapper = new ObjectMapper();
@Override
public void setNonNullParameter(PreparedStatement ps, int i, Object parameter, JdbcType jdbcType) throws SQLException {
try {
ps.setObject(i, objectMapper.writeValueAsString(parameter), Types.OTHER);
} catch (JsonProcessingException e) {
throw new RuntimeException("Error converting object to JSON", e);
}
}
@Override
public Object getNullableResult(ResultSet rs, String columnName) throws SQLException {
return objectMapper.readTree(rs.getString(columnName));
}
@Override
public Object getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
return objectMapper.readTree(rs.getString(columnIndex));
}
@Override
public Object getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
return objectMapper.readTree(cs.getString(columnIndex));
}
}
通過以上步驟,在 MyBatis 中實現 JSONB 數據的批量操作。在具體的業務邏輯中,可以調用 Mapper 中定義的方法來進行 JSONB 數據的批量操作。