如何捕获从 oracle 到 java 的自定义引发的异常

Question

我有一个在表上有触发器的 oracle 数据库。如果满足某些条件，它会在删除时引发自定义异常。在 Java 中，我在 DAO 层中使用 NamedParameterJdbcTemplate。结构是经典的controller-service-dao。如何在 Java 中捕获此异常的文本？提前致谢。 这是我的触发器。

create or replace TRIGGER "ME"."EDITABLE_SETTINGS_DELETE" 
BEFORE DELETE ON "ME"."MAP_SETTINGS"
FOR EACH ROW
ENABLE
DECLARE
PRAGMA AUTONOMOUS_TRANSACTION;
CURSOR is_editable_cursor IS
select is_editable
from map_calculation mc 
inner join map_calculation_group mg on mc.id_calc = mg.id_calc
where mg.id_calc = mc.id_calc and mg.id_settings = :old.id_settings;
TYPE is_editable_table IS TABLE OF VARCHAR2(1 CHAR);
v_is_editable is_editable_table;
BEGIN
OPEN is_editable_cursor;
FETCH is_editable_cursor BULK COLLECT INTO v_is_editable;
CLOSE is_editable_cursor;
IF ('F' MEMBER OF v_is_editable) THEN
    RAISE_APPLICATION_ERROR( -20017, 'You cannot delete settings inn an uneditable calculation' );
END IF;
COMMIT;
END;

这是 dao 实现

@Override
    public void delete(Integer id) {
        SqlParameterSource parameters = new MapSqlParameterSource().addValue("ID_SETTINGS", id);
        try {
            namedParameterJdbcTemplate.update(DELETE_SQL, parameters);
        } catch (Exception e) {
            log.error(e.getMessage());
            throw new RuntimeException("Error during deletion: " + e.getMessage());
        }
    }

这是反应前按钮

                        <Button
                            variant='primary'
                            onClick={() => {
                                globalProps
                                    .deleteItem()
                                    .then(() => {
                                        table.draw();
                                    })
                                    .catch((e) => {
                                        console.log(e);
                                        this.setState({ error: e.message });
                                        this.setState({ showModalBatch: true });
                                    });
                                this.props.toggleShowDelete();
                            }}
                        >
                            Удалить
                        </Button>

我有一个显示消息的模式，它显示的只是“请求失败，状态码 500”

Answer 1

try {
    ...
} catch (DataAccessException ex) {
    if (ex.getRootCause() instanceof SQLException) {
        SQLException sqlEx = (SQLException) ex.getRootCause();
        int errorCode = sqlEx.getErrorCode();
        if (errorCode == -20017) {
            ...
        }
    }
}