public class BioServer {\n\n static AtomicInteger counter = new AtomicInteger(0);\n static SimpleDateFormat sdf = new SimpleDateFormat(\"HH:mm:ss\"); \n \n public static void main(String[] args) {\n try {\n ServerSocket ss = new ServerSocket();\n ss.bind(new InetSocketAddress(\"localhost\", 8080));\n while (true) {\n Socket s = ss.accept();\n processWithNewThread(s);\n }\n } catch (Exception e) {\n e.printStackTrace();\n }\n }\n \n static void processWithNewThread(Socket s) {\n Runnable run = () -> {\n InetSocketAddress rsa = (InetSocketAddress)s.getRemoteSocketAddress();\n System.out.println(time() + \"->\" + rsa.getHostName() + \":\" + rsa.getPort() + \"->\" + Thread.currentThread().getId() + \":\" + counter.incrementAndGet());\n try {\n String result = readBytes(s.getInputStream());\n System.out.println(time() + \"->\" + result + \"->\" + Thread.currentThread().getId() + \":\" + counter.getAndDecrement());\n s.close();\n } catch (Exception e) {\n e.printStackTrace();\n }\n };\n new Thread(run).start();\n }\n \n static String readBytes(InputStream is) throws Exception {\n long start = 0;\n int total = 0;\n int count = 0;\n byte[] bytes = new byte[1024];\n \/\/\u5f00\u59cb\u8bfb\u6570\u636e\u7684\u65f6\u95f4\n long begin = System.currentTimeMillis();\n while ((count = is.read(bytes)) > -1) {\n if (start < 1) {\n \/\/\u7b2c\u4e00\u6b21\u8bfb\u5230\u6570\u636e\u7684\u65f6\u95f4\n start = System.currentTimeMillis();\n }\n total += count;\n }\n \/\/\u8bfb\u5b8c\u6570\u636e\u7684\u65f6\u95f4\n long end = System.currentTimeMillis();\n return \"wait=\" + (start - begin) + \"ms,read=\" + (end - start) + \"ms,total=\" + total + \"bs\";\n }\n\n static String time() {\n return sdf.format(new Date());\n }\n}<\/code><\/pre>\n\n\n\n\u5ba2\u6237\u7aef\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
public class Client {\n\n public static void main(String[] args) {\n try {\n for (int i = 0; i < 20; i++) {\n Socket s = new Socket();\n s.connect(new InetSocketAddress(\"localhost\", 8080));\n processWithNewThread(s, i);\n }\n } catch (IOException e) {\n e.printStackTrace();\n }\n }\n\n static void processWithNewThread(Socket s, int i) {\n Runnable run = () -> {\n try {\n \/\/\u7761\u7720\u968f\u673a\u76845-10\u79d2\uff0c\u6a21\u62df\u6570\u636e\u5c1a\u672a\u5c31\u7eea\n Thread.sleep((new Random().nextInt(6) + 5) * 1000);\n \/\/\u51991M\u6570\u636e\uff0c\u4e3a\u4e86\u62c9\u957f\u670d\u52a1\u5668\u7aef\u8bfb\u6570\u636e\u7684\u8fc7\u7a0b\n s.getOutputStream().write(prepareBytes());\n \/\/\u7761\u77201\u79d2\uff0c\u8ba9\u670d\u52a1\u5668\u7aef\u628a\u6570\u636e\u8bfb\u5b8c\n Thread.sleep(1000);\n s.close();\n } catch (Exception e) {\n e.printStackTrace();\n }\n };\n new Thread(run).start();\n }\n \n static byte[] prepareBytes() {\n byte[] bytes = new byte[1024*1024*1];\n for (int i = 0; i < bytes.length; i++) {\n bytes[i] = 1;\n }\n return bytes;\n }\n}<\/code><\/pre>\n\n\n\n\u8fd0\u884c\u540e\u7684\u6267\u884c\u7ed3\u679c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
\u65f6\u95f4->IP:Port->\u7ebf\u7a0bId:\u5f53\u524d\u7ebf\u7a0b\u6570\n15:11:52->127.0.0.1:55201->10:1\n15:11:52->127.0.0.1:55203->12:2\n15:11:52->127.0.0.1:55204->13:3\n15:11:52->127.0.0.1:55207->16:4\n15:11:52->127.0.0.1:55208->17:5\n15:11:52->127.0.0.1:55202->11:6\n15:11:52->127.0.0.1:55205->14:7\n15:11:52->127.0.0.1:55206->15:8\n15:11:52->127.0.0.1:55209->18:9\n15:11:52->127.0.0.1:55210->19:10\n15:11:52->127.0.0.1:55213->22:11\n15:11:52->127.0.0.1:55214->23:12\n15:11:52->127.0.0.1:55217->26:13\n15:11:52->127.0.0.1:55211->20:14\n15:11:52->127.0.0.1:55218->27:15\n15:11:52->127.0.0.1:55212->21:16\n15:11:52->127.0.0.1:55215->24:17\n15:11:52->127.0.0.1:55216->25:18\n15:11:52->127.0.0.1:55219->28:19\n15:11:52->127.0.0.1:55220->29:20\n\n\u65f6\u95f4->\u7b49\u5f85\u6570\u636e\u7684\u65f6\u95f4,\u8bfb\u53d6\u6570\u636e\u7684\u65f6\u95f4,\u603b\u5171\u8bfb\u53d6\u7684\u5b57\u8282\u6570->\u7ebf\u7a0bId:\u5f53\u524d\u7ebf\u7a0b\u6570\n15:11:58->wait=5012ms,read=1022ms,total=1048576bs->17:20\n15:11:58->wait=5021ms,read=1022ms,total=1048576bs->13:19\n15:11:58->wait=5034ms,read=1008ms,total=1048576bs->11:18\n15:11:58->wait=5046ms,read=1003ms,total=1048576bs->12:17\n15:11:58->wait=5038ms,read=1005ms,total=1048576bs->23:16\n15:11:58->wait=5037ms,read=1010ms,total=1048576bs->22:15\n15:11:59->wait=6001ms,read=1017ms,total=1048576bs->15:14\n15:11:59->wait=6016ms,read=1013ms,total=1048576bs->27:13\n15:11:59->wait=6011ms,read=1018ms,total=1048576bs->24:12\n15:12:00->wait=7005ms,read=1008ms,total=1048576bs->20:11\n15:12:00->wait=6999ms,read=1020ms,total=1048576bs->14:10\n15:12:00->wait=7019ms,read=1007ms,total=1048576bs->26:9\n15:12:00->wait=7012ms,read=1015ms,total=1048576bs->21:8\n15:12:00->wait=7023ms,read=1008ms,total=1048576bs->25:7\n15:12:01->wait=7999ms,read=1011ms,total=1048576bs->18:6\n15:12:02->wait=9026ms,read=1014ms,total=1048576bs->10:5\n15:12:02->wait=9005ms,read=1031ms,total=1048576bs->19:4\n15:12:03->wait=10007ms,read=1011ms,total=1048576bs->16:3\n15:12:03->wait=10006ms,read=1017ms,total=1048576bs->29:2\n15:12:03->wait=10010ms,read=1022ms,total=1048576bs->28:1<\/code><\/pre>\n\n\n\n\u53ef\u4ee5\u770b\u5230\u670d\u52a1\u5668\u7aef\u786e\u5b9e\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u5171\u521b\u5efa\u4e8620\u4e2a\u7ebf\u7a0b\u3002<\/p>\n\n\n\n
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\u5176\u5b9e\u8fd9\u4e2a\u6a21\u5f0f\u5728Java\u91cc\u65e9\u5c31\u6709\u4e86\uff0c\u5c31\u662fJava NIO\uff0c\u8fd9\u91cc\u7684\u5927\u5199\u5b57\u6bcd\u201cN\u201d\u662f\u5355\u8bcd\u201cNew\u201d\uff0c\u5373\u201c\u65b0\u201d\u7684\u610f\u601d\uff0c\u4e3b\u8981\u662f\u4e3a\u4e86\u548c\u4e0a\u9762\u7684\u201c\u4e00\u5bf9\u4e00\u201d\u8fdb\u884c\u533a\u5206\u3002<\/p>\n\n\n\n
\u5148\u94fa\u57ab\u4e00\u4e0b\u5427<\/p>\n\n\n\n
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\u5728Java NIO\u4e2d\uff0c\u63a5\u53d7\u8bf7\u6c42\u7684\u64cd\u4f5c\uff0c\u7528OP_ACCEPT\u8868\u793a\uff0c\u8bfb\u53d6\u6570\u636e\u7684\u64cd\u4f5c\uff0c\u7528OP_READ\u8868\u793a\u3002<\/p>\n\n\n\n
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1\u3001\u4e13\u95e8\u8bbe\u7acb\u4e00\u4e2a\u201c\u8dd1\u817f\u201d\u670d\u52a1\u5458\uff0c\u5de5\u4f5c\u804c\u8d23\u5355\u4e00\uff0c\u5c31\u662f\u95ee\u95ee\u5ba2\u4eba\u662f\u5426\u9700\u8981\u670d\u52a1\u3002<\/p>\n\n\n\n
2\u3001\u7ad9\u5728\u95e8\u53e3\u63a5\u5f85\u5ba2\u4eba\uff0c\u672c\u6765\u662f\u5927\u5802\u7ecf\u7406\u7684\u5de5\u4f5c\uff0c\u4f46\u662f\u4ed6\u4e0d\u613f\u610f\u5728\u95e8\u53e3\u76ef\u7740\uff0c\u4e8e\u662f\u5c31\u59d4\u6258\u7ed9\u8dd1\u817f\u670d\u52a1\u5458\uff0c\u4f60\u5e2e\u6211\u76ef\u7740\uff0c\u6709\u4eba\u6765\u4e86\u544a\u8bc9\u6211\u3002<\/p>\n\n\n\n
\u4e8e\u662f\u8dd1\u817f\u670d\u52a1\u5458\u5c31\u6709\u4e86\u4e00\u4e2a\u4efb\u52a1\uff0c\u66ff\u5927\u5802\u7ecf\u7406\u76ef\u68a2\u3002\u7ec8\u4e8e\u6765\u5ba2\u4eba\u4e86\uff0c\u8dd1\u817f\u670d\u52a1\u5458\u8d76\u7d27\u544a\u8bc9\u4e86\u5927\u5802\u7ecf\u7406\u3002<\/p>\n\n\n\n
3\u3001\u5927\u5802\u7ecf\u7406\u628a\u5ba2\u4eba\u5e26\u5230\u5ea7\u4f4d\u4e0a\uff0c\u5bf9\u8dd1\u817f\u670d\u52a1\u5458\u8bf4\uff0c\u5ba2\u4eba\u63a5\u4e0b\u6765\u80af\u5b9a\u662f\u8981\u70b9\u9910\u7684\uff0c\u4f46\u662f\u73b0\u5728\u5728\u770b\u83dc\u5355\uff0c\u4e0d\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u80fd\u770b\u597d\uff0c\u6240\u4ee5\u4f60\u4e0d\u65f6\u7684\u8fc7\u6765\u95ee\u95ee\uff0c\u770b\u9700\u4e0d\u9700\u8981\u70b9\u9910\uff0c\u9700\u8981\u7684\u8bdd\u5c31\u518d\u558a\u6765\u4e00\u4e2a\u201c\u70b9\u9910\u201d\u670d\u52a1\u5458\u7ed9\u5ba2\u4eba\u5199\u83dc\u5355\u3002<\/p>\n\n\n\n
\u4e8e\u662f\u8dd1\u817f\u670d\u52a1\u5458\u5c31\u53c8\u591a\u4e86\u4e00\u4e2a\u4efb\u52a1\uff0c\u5c31\u662f\u76ef\u7740\u8fd9\u684c\u5ba2\u4eba\uff0c\u4e0d\u65f6\u6765\u95ee\u95ee\uff0c\u5982\u679c\u9700\u8981\u670d\u52a1\u7684\u8bdd\uff0c\u5c31\u53eb\u70b9\u9910\u670d\u52a1\u5458\u8fc7\u6765\u670d\u52a1\u3002<\/p>\n\n\n\n
4\u3001\u8dd1\u817f\u670d\u52a1\u5458\u5728\u67d0\u6b21\u8be2\u95ee\u4e2d\uff0c\u5ba2\u4eba\u7ec8\u4e8e\u51b3\u5b9a\u70b9\u9910\u4e86\uff0c\u8dd1\u9898\u670d\u52a1\u5458\u8d76\u7d27\u627e\u6765\u4e00\u4e2a\u70b9\u9910\u670d\u52a1\u5458\u4e3a\u5ba2\u4eba\u5199\u83dc\u5355\u3002<\/p>\n\n\n\n
5\u3001\u5c31\u8fd9\u6837\uff0c\u8dd1\u817f\u670d\u52a1\u5458\u65e2\u8981\u76ef\u7740\u95e8\u5916\u65b0\u8fc7\u6765\u7684\u5ba2\u4eba\uff0c\u4e5f\u8981\u76ef\u7740\u95e8\u5185\u5df2\u7ecf\u5c31\u5750\u7684\u5ba2\u4eba\u3002\u65b0\u5ba2\u4eba\u6765\u4e86\uff0c\u901a\u77e5\u5927\u5802\u7ecf\u7406\u53bb\u63a5\u5f85\u3002\u5c31\u5750\u7684\u5ba2\u4eba\u51b3\u5b9a\u70b9\u9910\u4e86\uff0c\u901a\u77e5\u70b9\u9910\u670d\u52a1\u5458\u53bb\u5199\u83dc\u5355\u3002<\/p>\n\n\n\n
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\u54c8\u54c8\uff0cJava NIO\u6765\u5566<\/p>\n\n\n\n
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public class NioServer {\n\n static int clientCount = 0;\n static AtomicInteger counter = new AtomicInteger(0);\n static SimpleDateFormat sdf = new SimpleDateFormat(\"HH:mm:ss\"); \n \n public static void main(String[] args) {\n try {\n Selector selector = Selector.open();\n ServerSocketChannel ssc = ServerSocketChannel.open();\n ssc.configureBlocking(false);\n ssc.register(selector, SelectionKey.OP_ACCEPT);\n ssc.bind(new InetSocketAddress(\"localhost\", 8080));\n while (true) {\n selector.select();\n Set<SelectionKey> keys = selector.selectedKeys();\n Iterator<SelectionKey> iterator = keys.iterator();\n while (iterator.hasNext()) {\n SelectionKey key = iterator.next();\n iterator.remove();\n if (key.isAcceptable()) {\n ServerSocketChannel ssc1 = (ServerSocketChannel)key.channel();\n SocketChannel sc = null;\n while ((sc = ssc1.accept()) != null) {\n sc.configureBlocking(false);\n sc.register(selector, SelectionKey.OP_READ);\n InetSocketAddress rsa = (InetSocketAddress)sc.socket().getRemoteSocketAddress();\n System.out.println(time() + \"->\" + rsa.getHostName() + \":\" + rsa.getPort() + \"->\" + Thread.currentThread().getId() + \":\" + (++clientCount));\n }\n } else if (key.isReadable()) {\n \/\/\u5148\u5c06\u201c\u8bfb\u201d\u4ece\u611f\u5174\u8da3\u64cd\u4f5c\u79fb\u51fa\uff0c\u5f85\u628a\u6570\u636e\u4ece\u901a\u9053\u4e2d\u8bfb\u5b8c\u540e\uff0c\u518d\u628a\u201c\u8bfb\u201d\u6dfb\u52a0\u5230\u611f\u5174\u8da3\u64cd\u4f5c\u4e2d\n \/\/\u5426\u5219\uff0c\u8be5\u901a\u9053\u4f1a\u4e00\u76f4\u88ab\u9009\u51fa\u6765\n key.interestOps(key.interestOps() & (~ SelectionKey.OP_READ));\n processWithNewThread((SocketChannel)key.channel(), key);\n }\n }\n }\n } catch (Exception e) {\n e.printStackTrace();\n }\n }\n\n static void processWithNewThread(SocketChannel sc, SelectionKey key) {\n Runnable run = () -> {\n counter.incrementAndGet();\n try {\n String result = readBytes(sc);\n \/\/\u628a\u201c\u8bfb\u201d\u52a0\u8fdb\u53bb\n key.interestOps(key.interestOps() | SelectionKey.OP_READ);\n System.out.println(time() + \"->\" + result + \"->\" + Thread.currentThread().getId() + \":\" + counter.get());\n sc.close();\n } catch (Exception e) {\n e.printStackTrace();\n }\n counter.decrementAndGet();\n };\n new Thread(run).start();\n }\n \n static String readBytes(SocketChannel sc) throws Exception {\n long start = 0;\n int total = 0;\n int count = 0;\n ByteBuffer bb = ByteBuffer.allocate(1024);\n \/\/\u5f00\u59cb\u8bfb\u6570\u636e\u7684\u65f6\u95f4\n long begin = System.currentTimeMillis();\n while ((count = sc.read(bb)) > -1) {\n if (start < 1) {\n \/\/\u7b2c\u4e00\u6b21\u8bfb\u5230\u6570\u636e\u7684\u65f6\u95f4\n start = System.currentTimeMillis();\n }\n total += count;\n bb.clear();\n }\n \/\/\u8bfb\u5b8c\u6570\u636e\u7684\u65f6\u95f4\n long end = System.currentTimeMillis();\n return \"wait=\" + (start - begin) + \"ms,read=\" + (end - start) + \"ms,total=\" + total + \"bs\";\n }\n \n static String time() {\n return sdf.format(new Date());\n }\n}<\/code><\/pre>\n\n\n\n\u5b83\u7684\u5927\u81f4\u5904\u7406\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n
1\u3001\u5b9a\u4e49\u4e00\u4e2a\u9009\u62e9\u5668\uff0cSelector\u3002<\/p>\n\n\n\n
\u76f8\u5f53\u4e8e\u8bbe\u7acb\u4e00\u4e2a\u8dd1\u817f\u670d\u52a1\u5458\u3002<\/p>\n\n\n\n
2\u3001\u5b9a\u4e49\u4e00\u4e2a\u670d\u52a1\u5668\u7aef\u5957\u63a5\u5b57\u901a\u9053\uff0cServerSocketChannel\uff0c\u5e76\u914d\u7f6e\u4e3a\u975e\u963b\u585e\u7684\u3002<\/p>\n\n\n\n
\u76f8\u7b49\u4e8e\u8058\u8bf7\u4e86\u4e00\u4f4d\u5927\u5802\u7ecf\u7406\u3002<\/p>\n\n\n\n
3\u3001\u5c06\u5957\u63a5\u5b57\u901a\u9053\u6ce8\u518c\u5230\u9009\u62e9\u5668\u4e0a\uff0c\u5e76\u628a\u611f\u5174\u8da3\u7684\u64cd\u4f5c\u8bbe\u7f6e\u4e3aOP_ACCEPT\u3002<\/p>\n\n\n\n
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4\u3001\u8fdb\u5165\u6b7b\u5faa\u73af\uff0c\u9009\u62e9\u5668\u4e0d\u65f6\u7684\u8fdb\u884c\u9009\u62e9\u3002<\/p>\n\n\n\n
\u76f8\u5f53\u4e8e\u8dd1\u817f\u670d\u52a1\u5458\u4e00\u904d\u53c8\u4e00\u904d\u7684\u53bb\u8be2\u95ee\u3001\u53bb\u8f6c\u60a0\u3002<\/p>\n\n\n\n
5\u3001\u9009\u62e9\u5668\u7ec8\u4e8e\u9009\u62e9\u51fa\u4e86\u901a\u9053\uff0c\u53d1\u73b0\u901a\u9053\u662f\u9700\u8981Acceptable\u7684\u3002<\/p>\n\n\n\n
\u76f8\u5f53\u4e8e\u8dd1\u817f\u670d\u52a1\u5458\u7ec8\u4e8e\u53d1\u73b0\u95e8\u5916\u6765\u5ba2\u4eba\u4e86\uff0c\u5ba2\u4eba\u662f\u9700\u8981\u63a5\u5f85\u7684\u3002<\/p>\n\n\n\n
6\u3001\u4e8e\u662f\u670d\u52a1\u5668\u7aef\u5957\u63a5\u5b57\u63a5\u53d7\u4e86\u8fd9\u4e2a\u901a\u9053\uff0c\u5f00\u59cb\u5904\u7406\u3002<\/p>\n\n\n\n
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7\u3001\u628a\u65b0\u63a5\u53d7\u7684\u901a\u9053\u914d\u7f6e\u4e3a\u975e\u963b\u585e\u7684\uff0c\u5e76\u628a\u5b83\u4e5f\u6ce8\u518c\u5230\u4e86\u9009\u62e9\u5668\u4e0a\uff0c\u8be5\u901a\u9053\u611f\u5174\u8da3\u7684\u64cd\u4f5c\u4e3aOP_READ\u3002<\/p>\n\n\n\n
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8\u3001\u9009\u62e9\u5668\u7ee7\u7eed\u4e0d\u65f6\u7684\u8fdb\u884c\u9009\u62e9\u7740\u3002<\/p>\n\n\n\n
\u76f8\u5f53\u4e8e\u8dd1\u817f\u670d\u52a1\u5458\u7ee7\u7eed\u4e0d\u65f6\u7684\u8be2\u95ee\u7740\u3001\u8f6c\u60a0\u7740\u3002<\/p>\n\n\n\n
9\u3001\u9009\u62e9\u5668\u7ec8\u4e8e\u53c8\u9009\u62e9\u51fa\u4e86\u901a\u9053\uff0c\u8fd9\u6b21\u53d1\u73b0\u901a\u9053\u662f\u9700\u8981Readable\u7684\u3002<\/p>\n\n\n\n
\u76f8\u5f53\u4e8e\u8dd1\u817f\u670d\u52a1\u5458\u7ec8\u4e8e\u53d1\u73b0\u4e86\u4e00\u684c\u5ba2\u4eba\u6709\u4e86\u9700\u6c42\uff0c\u662f\u9700\u8981\u70b9\u9910\u7684\u3002<\/p>\n\n\n\n
10\u3001\u628a\u8fd9\u4e2a\u901a\u9053\u4ea4\u7ed9\u4e86\u4e00\u4e2a\u65b0\u7684\u5de5\u4f5c\u7ebf\u7a0b\u53bb\u5904\u7406\u3002<\/p>\n\n\n\n
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11\u3001\u8fd9\u4e2a\u5de5\u4f5c\u7ebf\u7a0b\u5904\u7406\u5b8c\u540e\uff0c\u5c31\u88ab\u56de\u6536\u4e86\uff0c\u53ef\u4ee5\u518d\u53bb\u5904\u7406\u5176\u5b83\u901a\u9053\u3002<\/p>\n\n\n\n
\u76f8\u5f53\u4e8e\u70b9\u9910\u670d\u52a1\u5458\u5199\u597d\u83dc\u5355\u540e\uff0c\u5c31\u8d70\u4e86\uff0c\u53ef\u4ee5\u518d\u53bb\u4e3a\u5176\u4ed6\u5ba2\u4eba\u5199\u83dc\u5355\u3002<\/p>\n\n\n\n
12\u3001\u9009\u62e9\u5668\u7ee7\u7eed\u7740\u91cd\u590d\u7684\u9009\u62e9\u5de5\u4f5c\uff0c\u4e0d\u77e5\u9053\u4ec0\u4e48\u65f6\u5019\u662f\u4e2a\u5934\u3002<\/p>\n\n\n\n
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\u65f6\u95f4->IP:Port->\u4e3b\u7ebf\u7a0bId:\u5f53\u524d\u8fde\u63a5\u6570\n16:34:39->127.0.0.1:56105->1:1\n16:34:39->127.0.0.1:56106->1:2\n16:34:39->127.0.0.1:56107->1:3\n16:34:39->127.0.0.1:56108->1:4\n16:34:39->127.0.0.1:56109->1:5\n16:34:39->127.0.0.1:56110->1:6\n16:34:39->127.0.0.1:56111->1:7\n16:34:39->127.0.0.1:56112->1:8\n16:34:39->127.0.0.1:56113->1:9\n16:34:39->127.0.0.1:56114->1:10\n16:34:39->127.0.0.1:56115->1:11\n16:34:39->127.0.0.1:56116->1:12\n16:34:39->127.0.0.1:56117->1:13\n16:34:39->127.0.0.1:56118->1:14\n16:34:39->127.0.0.1:56119->1:15\n16:34:39->127.0.0.1:56120->1:16\n16:34:39->127.0.0.1:56121->1:17\n16:34:39->127.0.0.1:56122->1:18\n16:34:39->127.0.0.1:56123->1:19\n16:34:39->127.0.0.1:56124->1:20\n\n\u65f6\u95f4->\u7b49\u5f85\u6570\u636e\u7684\u65f6\u95f4,\u8bfb\u53d6\u6570\u636e\u7684\u65f6\u95f4,\u603b\u5171\u8bfb\u53d6\u7684\u5b57\u8282\u6570->\u7ebf\u7a0bId:\u5f53\u524d\u7ebf\u7a0b\u6570\n16:34:45->wait=1ms,read=1018ms,total=1048576bs->11:5\n16:34:45->wait=0ms,read=1054ms,total=1048576bs->10:5\n16:34:45->wait=0ms,read=1072ms,total=1048576bs->13:6\n16:34:45->wait=0ms,read=1061ms,total=1048576bs->14:5\n16:34:45->wait=0ms,read=1140ms,total=1048576bs->12:4\n16:34:46->wait=0ms,read=1001ms,total=1048576bs->15:5\n16:34:46->wait=0ms,read=1062ms,total=1048576bs->17:6\n16:34:46->wait=0ms,read=1059ms,total=1048576bs->16:5\n16:34:47->wait=0ms,read=1001ms,total=1048576bs->19:4\n16:34:47->wait=0ms,read=1001ms,total=1048576bs->20:4\n16:34:47->wait=0ms,read=1015ms,total=1048576bs->18:3\n16:34:47->wait=0ms,read=1001ms,total=1048576bs->21:2\n16:34:48->wait=0ms,read=1032ms,total=1048576bs->22:4\n16:34:49->wait=0ms,read=1002ms,total=1048576bs->23:3\n16:34:49->wait=0ms,read=1001ms,total=1048576bs->25:2\n16:34:49->wait=0ms,read=1028ms,total=1048576bs->24:4\n16:34:50->wait=0ms,read=1008ms,total=1048576bs->28:4\n16:34:50->wait=0ms,read=1033ms,total=1048576bs->27:3\n16:34:50->wait=1ms,read=1002ms,total=1048576bs->29:2\n16:34:50->wait=0ms,read=1001ms,total=1048576bs->26:2<\/code><\/pre>\n\n\n\n\u670d\u52a1\u5668\u7aef\u63a5\u53d720\u4e2a\u8fde\u63a5\uff0c\u521b\u5efa20\u4e2a\u901a\u9053\uff0c\u5e76\u628a\u5b83\u4eec\u6ce8\u518c\u5230\u9009\u62e9\u5668\u4e0a\uff0c\u6b64\u65f6\u4e0d\u9700\u8981\u989d\u5916\u7ebf\u7a0b\u3002<\/p>\n\n\n\n
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\u5bf9\u6bd4\u4e0e\u7ed3\u8bba\uff1a<\/p>\n\n\n\n
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\u563b\u563b\uff0cJava AIO\u6765\u5566<\/p>\n\n\n\n
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public class AioServer {\n\n static int clientCount = 0;\n static AtomicInteger counter = new AtomicInteger(0);\n static SimpleDateFormat sdf = new SimpleDateFormat(\"HH:mm:ss\"); \n \n public static void main(String[] args) {\n try {\n AsynchronousServerSocketChannel assc = AsynchronousServerSocketChannel.open();\n assc.bind(new InetSocketAddress(\"localhost\", 8080));\n \/\/\u975e\u963b\u585e\u65b9\u6cd5\uff0c\u5176\u5b9e\u5c31\u662f\u6ce8\u518c\u4e86\u4e2a\u56de\u8c03\uff0c\u800c\u4e14\u53ea\u80fd\u63a5\u53d7\u4e00\u4e2a\u8fde\u63a5\n assc.accept(null, new CompletionHandler<AsynchronousSocketChannel, Object>() {\n\n @Override\n public void completed(AsynchronousSocketChannel asc, Object attachment) {\n \/\/\u518d\u6b21\u6ce8\u518c\uff0c\u63a5\u53d7\u4e0b\u4e00\u4e2a\u8fde\u63a5\n assc.accept(null, this);\n try {\n InetSocketAddress rsa = (InetSocketAddress)asc.getRemoteAddress();\n System.out.println(time() + \"->\" + rsa.getHostName() + \":\" + rsa.getPort() + \"->\" + Thread.currentThread().getId() + \":\" + (++clientCount));\n } catch (Exception e) {\n }\n readFromChannelAsync(asc);\n }\n\n @Override\n public void failed(Throwable exc, Object attachment) {\n \n }\n });\n \/\/\u4e0d\u8ba9\u4e3b\u7ebf\u7a0b\u9000\u51fa\n synchronized (AioServer.class) {\n AioServer.class.wait();\n }\n } catch (Exception e) {\n e.printStackTrace();\n }\n }\n\n static void readFromChannelAsync(AsynchronousSocketChannel asc) {\n \/\/\u4f1a\u628a\u6570\u636e\u8bfb\u5165\u5230\u8be5buffer\u4e4b\u540e\uff0c\u518d\u89e6\u53d1\u5de5\u4f5c\u7ebf\u7a0b\u6765\u6267\u884c\u56de\u8c03\n ByteBuffer bb = ByteBuffer.allocate(1024*1024*1 + 1);\n long begin = System.currentTimeMillis();\n \/\/\u975e\u963b\u585e\u65b9\u6cd5\uff0c\u5176\u5b9e\u5c31\u662f\u6ce8\u518c\u4e86\u4e2a\u56de\u8c03\uff0c\u800c\u4e14\u53ea\u80fd\u63a5\u53d7\u4e00\u6b21\u8bfb\u53d6\n asc.read(bb, null, new CompletionHandler<Integer, Object>() {\n \/\/\u4ece\u8be5\u8fde\u63a5\u4e0a\u4e00\u5171\u8bfb\u5230\u7684\u5b57\u8282\u6570\n int total = 0;\n \/**\n * @param count \u8868\u793a\u672c\u6b21\u8bfb\u53d6\u5230\u7684\u5b57\u8282\u6570\uff0c-1\u8868\u793a\u6570\u636e\u5df2\u8bfb\u5b8c\n *\/\n @Override\n public void completed(Integer count, Object attachment) {\n counter.incrementAndGet();\n if (count > -1) {\n total += count;\n }\n int size = bb.position();\n System.out.println(time() + \"->count=\" + count + \",total=\" + total + \"bs,buffer=\" + size + \"bs->\" + Thread.currentThread().getId() + \":\" + counter.get());\n if (count > -1) {\/\/\u6570\u636e\u8fd8\u6ca1\u6709\u8bfb\u5b8c\n \/\/\u518d\u6b21\u6ce8\u518c\u56de\u8c03\uff0c\u63a5\u53d7\u4e0b\u4e00\u6b21\u8bfb\u53d6\n asc.read(bb, null, this);\n } else {\/\/\u6570\u636e\u5df2\u8bfb\u5b8c\n try {\n asc.close();\n } catch (Exception e) {\n e.printStackTrace();\n }\n }\n counter.decrementAndGet();\n }\n\n @Override\n public void failed(Throwable exc, Object attachment) {\n \n }\n });\n long end = System.currentTimeMillis();\n System.out.println(time() + \"->exe read req,use=\" + (end -begin) + \"ms\" + \"->\" + Thread.currentThread().getId());\n }\n \n static String time() {\n return sdf.format(new Date());\n }\n}<\/code><\/pre>\n\n\n\n\u5b83\u7684\u5927\u81f4\u5904\u7406\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n
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BIO\u662f\u963b\u585eIO\uff0c\u53ef\u4ee5\u662f\u540c\u6b65\u963b\u585e\uff0c\u4e5f\u53ef\u4ee5\u662f\u5f02\u6b65\u963b\u585e\u3002AIO\u662f\u5f02\u6b65IO\uff0c\u53ea\u6709\u5f02\u6b65\u975e\u963b\u585e\u8fd9\u4e00\u79cd\u3002\u56e0\u6b64\u6ca1\u6709\u540c\u6b65\u975e\u963b\u585e\u8fd9\u79cd\u8bf4\u6cd5\uff0c\u56e0\u4e3a\u540c\u6b65\u4e00\u5b9a\u662f\u963b\u585e\u7684\u3002<\/p>\n\n\n\n
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\u53c2\u8003\u8d44\u6599\uff1ahttps:\/\/www.cnblogs.com\/lixinjie\/p\/a-post-tell-clearly-about-io-multiplexing-and-async-io.html<\/p>\n
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