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本篇內(nèi)容介紹了“Java如何壓縮文件”的有關(guān)知識(shí),在實(shí)際案例的操作過(guò)程中,不少人都會(huì)遇到這樣的困境,接下來(lái)就讓小編帶領(lǐng)大家學(xué)習(xí)一下如何處理這些情況吧!希望大家仔細(xì)閱讀,能夠?qū)W有所成!
代碼如下:
public static void zipFilePip() { long beginTime = System.currentTimeMillis(); try(WritableByteChannel out = Channels.newChannel(new FileOutputStream(ZIP_FILE))) { Pipe pipe = Pipe.open(); //異步任務(wù) CompletableFuture.runAsync(()->runTask(pipe)); //獲取讀通道 ReadableByteChannel readableByteChannel = pipe.source(); ByteBuffer buffer = ByteBuffer.allocate(((int) FILE_SIZE)*10); while (readableByteChannel.read(buffer)>= 0) { buffer.flip(); out.write(buffer); buffer.clear(); } }catch (Exception e){ e.printStackTrace(); } printInfo(beginTime); } //異步任務(wù) public static void runTask(Pipe pipe) { try(ZipOutputStream zos = new ZipOutputStream(Channels.newOutputStream(pipe.sink())); WritableByteChannel out = Channels.newChannel(zos)) { System.out.println("Begin"); for (int i = 0; i < 10; i++) { zos.putNextEntry(new ZipEntry(i+SUFFIX_FILE)); FileChannel jpgChannel = new FileInputStream(new File(JPG_FILE_PATH)).getChannel(); jpgChannel.transferTo(0, FILE_SIZE, out); jpgChannel.close(); } }catch (Exception e){ e.printStackTrace(); } }
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