Java 异常编写小技巧

default Boolean update(TransactionTemplate transactionTemplate, JdbcTemplate jdbcTemplate,List<ModifyRequest> contexts, BiConsumer<Boolean, Throwable> consumer)

try {   
    return Boolean.TRUE;
} catch (BadSqlGrammarException | DataIntegrityViolationException e) {
    FATAL_LOG.error("[db-error] sql : {}, args : {}, error : {}", errSql[0], args[0], e.toString());
    return Boolean.FALSE;
}

  try (DiskUtils.LineIterator iterator = DiskUtils.lineIterator(file)) {
    int batchSize = 1000;
    List<String> batchUpdate = new ArrayList<>(batchSize);
    List<CompletableFuture<Void>> futures = new ArrayList<>();
    List<Boolean> results = new CopyOnWriteArrayList<>();
    while (iterator.hasNext()) {
        String sql = iterator.next();
        if (StringUtils.isNotBlank(sql)) {
            batchUpdate.add(sql);
        }
        if (batchUpdate.size() == batchSize || !iterator.hasNext()) {
            List<ModifyRequest> sqls = batchUpdate.stream().map(s -> {
                ModifyRequest request = new ModifyRequest();
                request.setSql(s);
                return request;
            }).collect(Collectors.toList());
            futures.add(CompletableFuture.runAsync(() -> results.add(doDataImport(jdbcTemplate, sqls))));
            batchUpdate.clear();
        }
    }
    CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
    return RestResult.<String>builder()
            .withCode(BooleanUtils.and(results.toArray(new Boolean[0])) ? 200 : 500).withData("").build();
} catch (Throwable ex) {
    LogUtil.DEFAULT_LOG.error("An exception occurred when external data was imported into Derby : {}", ex);
    return RestResultUtils.failed(ex.getMessage());
}