rxjava的observable订阅时在oncomplete被调用时取消订阅
在非android环境中使用rxjava2.x时，如果需要在observable的oncomplete被调用时取消订阅，可以采用以下方法：
在oncomplete中设置completablefuture.complete通知调用方已结束：
table.subscribe(tableins -> { // system.out.println("-------information-------"); system.out.println(tableins); }, throwable -> { throw new schemaexportexception(throwable); }, new action() { @override public void run() throws exception { system.out.println("complete"); // 在这里取消订阅 completablefuture.complete(); } });
调用方可以根据completablefuture来判断observable是否已完成：
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long startStamp = System.currentTimeMillis(); // Flowable Flowable<Table> tableFlowable = result.getAll(dbName.get(), strategy).flatMap(new Function<Table, Publisher<Table>>() { @Override public Publisher<Table> apply(@NonNull Table table) throws Exception { return result.getTableColumn(table).flatMap(new Function<List<Column>, SingleSource<Table>>() { @Override public SingleSource<Table> apply(@NonNull List<Column> columns) throws Exception { return Single.just(table.fillColumn(columns)); } }).flatMapPublisher(new Function<Table, Publisher<? extends Table>>() { @Override public Publisher<? extends Table> apply(@NonNull Table table) throws Exception { return Flowable.just(table); } }); } }); Disposable disposable = null; try { disposable = out.flush(info, tableFlowable); CompletableFuture<String> future = out.getFuture(); while (!future.isDone()) { logger.info("[ERE-Flowable]未完成,线程休眠1秒"); Thread.currentThread().sleep(1000, 0); } String result = future.get(); logger.info("[ERE-Flowable]完成, 结果:" + result); if (result.equals("OK")) { long finishStamp = System.currentTimeMillis(); clearHander(disposable, "[ERE-Flowable]RxJava disposed because complete, WithTime: " + (finishStamp - startStamp)); } } catch (Exception e) { clearHander(disposable, "[ERE-Flowable]RxJava disposed has Exception: " + e.getMessage()); }
