![\"menu-r.4af5f7ec.gif\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810005902-6897eed676f30.gif\")
<\/p>\n \u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 <\/p>\n
\u7b80\u4ecb：SocketServer\u662f\u4e00\u4e2aJava\u6846\u67b6，\u7528\u4e8e\u521b\u5efa\u57fa\u4e8eTCP\/UDP\u7684\u670d\u52a1\u5668\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u6846\u67b6\u901a\u8fc7\u63d0\u4f9b\u9ad8\u7ea7\u62bd\u8c61\u7b80\u5316\u4e86\u591a\u7ebf\u7a0b\u3001\u53ef\u6269\u5c55\u670d\u52a1\u5668\u7684\u5f00\u53d1\u3002\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86SocketServer\u7684\u57fa\u7840\u6982\u5ff5\u3001\u591a\u7ebf\u7a0b\u6a21\u578b\u3001\u4e3b\u8981\u7c7b\u548c\u63a5\u53e3\u3001\u4f7f\u7528\u6b65\u9aa4\u3001\u5f02\u5e38\u5904\u7406\u3001\u5e94\u7528\u793a\u4f8b\u53ca\u6027\u80fd\u4f18\u5316\u548c\u5b89\u5168\u6027\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528SocketServer\u6846\u67b6\u521b\u5efa\u5404\u79cd\u7f51\u7edc\u5e94\u7528，\u5982\u804a\u5929\u670d\u52a1\u5668\u3001\u6587\u4ef6\u4f20\u8f93\u670d\u52a1\u5668\u7b49，\u5e76\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u6c60\u7ba1\u7406\u548c\u7f51\u7edc\u5b89\u5168\u63aa\u65bd\u3002 ![\"SocketServer：\u4f7f\u7528Java\u6784\u5efa\u7684\u5957\u63a5\u5b57\u670d\u52a1\u5668\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250810005902-6897eed685b2b.png\")
<\/p>\n
\u7f51\u7edc\u7f16\u7a0b\u662f\u8ba9\u4e24\u53f0\u6216\u66f4\u591a\u8ba1\u7b97\u673a\u4e4b\u95f4\u80fd\u591f\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u7684\u7f16\u7a0b\u6280\u672f\u3002Java\u63d0\u4f9b\u4e86\u4e00\u5957\u4e30\u5bcc\u7684API，\u4f7f\u5f97\u5f00\u53d1\u8005\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u7f51\u7edc\u901a\u4fe1\u3002\u57fa\u672c\u7684\u7f51\u7edc\u901a\u4fe1\u6d89\u53ca\u4e24\u4e2a\u4e3b\u8981\u6982\u5ff5：IP\u5730\u5740\u548c\u7aef\u53e3\u3002IP\u5730\u5740\u8d1f\u8d23\u6807\u8bc6\u7f51\u7edc\u4e2d\u7684\u8bbe\u5907，\u800c\u7aef\u53e3\u5219\u7528\u4e8e\u533a\u5206\u5728\u540c\u4e00\u8bbe\u5907\u4e0a\u8fd0\u884c\u7684\u4e0d\u540c\u7f51\u7edc\u670d\u52a1\u3002 <\/p>\n
\u5728Java\u4e2d，\u7f51\u7edc\u901a\u4fe1\u901a\u5e38\u4f7f\u7528Socket\u3002Socket\u662f\u901a\u4fe1\u53cc\u65b9\u7684\u7aef\u70b9，\u6570\u636e\u901a\u8fc7\u8fd9\u4e2a\u7aef\u70b9\u5728\u7f51\u7edc\u4e0a\u8fdb\u884c\u4f20\u8f93\u3002Java\u7684Socket\u7f16\u7a0b\u6d89\u53ca\u5230 java.net.Socket \u7c7b\u548c java.net.ServerSocket \u7c7b，\u5206\u522b\u7528\u4e8e\u5efa\u7acb\u5ba2\u6237\u7aef\u8fde\u63a5\u548c\u76d1\u542c\u6765\u81ea\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u3002 <\/p>\n
\u4e3a\u4e86\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\u5bf9\u8c61，\u9700\u8981\u5c06\u5bf9\u8c61\u5e8f\u5217\u5316\u4e3a\u5b57\u8282\u6d41，\u8fd9\u79f0\u4e3a\u5e8f\u5217\u5316\u3002\u63a5\u6536\u7aef\u5219\u9700\u8981\u5c06\u63a5\u6536\u5230\u7684\u5b57\u8282\u6d41\u53cd\u5e8f\u5217\u5316\u4e3a\u5bf9\u8c61\u3002Java\u4e2d\u53ef\u4ee5\u4f7f\u7528 java.io.ObjectOutputStream \u548c java.io.ObjectInputStream \u5b9e\u73b0\u5bf9\u8c61\u7684\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u3002\u8fd9\u5bf9\u4e8e\u590d\u6742\u7684\u5bf9\u8c61\u7ed3\u6784\u5c24\u5176\u91cd\u8981，\u56e0\u4e3a\u5b83\u4eec\u80fd\u591f\u8f6c\u6362\u5bf9\u8c61\u7684\u6574\u4e2a\u72b6\u6001\u3002 <\/p>\n
\u5728Java\u4e2d，\u591a\u7ebf\u7a0b\u662f\u4e00\u79cd\u540c\u65f6\u6267\u884c\u591a\u4e2a\u7ebf\u7a0b\u4ee5\u63d0\u9ad8\u7a0b\u5e8f\u6027\u80fd\u548c\u6548\u7387\u7684\u6280\u672f\u3002\u6bcf\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u770b\u4f5c\u662f\u7a0b\u5e8f\u4e2d\u4e00\u4e2a\u5355\u72ec\u7684\u6267\u884c\u8def\u5f84，\u5b83\u4eec\u53ef\u4ee5\u5e76\u884c\u6216\u5e76\u53d1\u5730\u8fd0\u884c，\u4ece\u800c\u5141\u8bb8\u7a0b\u5e8f\u5229\u7528\u591a\u6838\u5904\u7406\u5668\u7684\u4f18\u52bf\u3002 <\/p>\n
\u521b\u5efa\u7ebf\u7a0b\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u6cd5：\u7ee7\u627fThread\u7c7b\u548c\u5b9e\u73b0Runnable\u63a5\u53e3\u3002\u901a\u8fc7\u8fd9\u4e24\u79cd\u65b9\u5f0f，\u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u4ee3\u7801\u5757，\u8fd9\u4e9b\u4ee3\u7801\u5757\u5728\u591a\u4e2a\u7ebf\u7a0b\u4e2d\u5e76\u53d1\u6267\u884c\u3002\u4e3a\u4e86\u66f4\u597d\u5730\u7406\u89e3，\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50，\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528Runnable\u63a5\u53e3\u521b\u5efa\u548c\u8fd0\u884c\u7ebf\u7a0b\u3002 <\/p>\n
public class SimpleThread implements Runnable {
\n @Override
\n public void run() {
\n System.out.println("\u7ebf\u7a0b " + Thread.currentThread().getName() + " \u6b63\u5728\u8fd0\u884c\u3002");
\n }<\/p>\n
public static void main(String[] args) {
\n \/\/ \u521b\u5efaThread\u5b9e\u4f8b，\u5c06SimpleThread\u7684\u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012
\n Thread thread = new Thread(new SimpleThread());
\n \/\/ \u542f\u52a8\u7ebf\u7a0b
\n thread.start();
\n }
\n}<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d， SimpleThread \u5b9e\u73b0\u4e86 Runnable \u63a5\u53e3，\u5e76\u91cd\u5199\u4e86 run \u65b9\u6cd5，\u8fd9\u662f\u7ebf\u7a0b\u6267\u884c\u7684\u5165\u53e3\u70b9\u3002 main \u65b9\u6cd5\u4e2d\u521b\u5efa\u4e86\u4e00\u4e2a Thread \u5bf9\u8c61，\u5e76\u4f20\u9012\u4e86 SimpleThread \u7684\u5b9e\u4f8b\u3002\u901a\u8fc7\u8c03\u7528 start() \u65b9\u6cd5，Java\u865a\u62df\u673a\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b，\u5e76\u5728\u8be5\u7ebf\u7a0b\u4e2d\u8c03\u7528 SimpleThread \u7684 run \u65b9\u6cd5\u3002 <\/p>\n
\u5f53\u591a\u4e2a\u7ebf\u7a0b\u9700\u8981\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u65f6，\u5fc5\u987b\u786e\u4fdd\u5b83\u4eec\u4e0d\u4f1a\u4e92\u76f8\u5e72\u6270\u3002Java\u63d0\u4f9b\u4e86\u591a\u79cd\u673a\u5236\u6765\u540c\u6b65\u7ebf\u7a0b，\u6bd4\u5982\u5173\u952e\u5b57 synchronized \u548c wait \/ notify \u673a\u5236\u3002 <\/p>\n
\u540c\u6b65\u673a\u5236\u7684\u5173\u952e\u662f\u786e\u4fdd\u5728\u4efb\u4f55\u65f6\u523b\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002\u5982\u679c\u4e24\u4e2a\u6216\u66f4\u591a\u7684\u7ebf\u7a0b\u8bd5\u56fe\u540c\u65f6\u8bbf\u95ee\u76f8\u540c\u7684\u8d44\u6e90，\u5c31\u53ef\u80fd\u53d1\u751f\u7ade\u6001\u6761\u4ef6，\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u6216\u5176\u4ed6\u9519\u8bef\u3002 <\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528 synchronized \u5173\u952e\u5b57\u8fdb\u884c\u540c\u6b65\u8bbf\u95ee\u7684\u4f8b\u5b50： <\/p>\n
public class Counter {
\n private int count = 0;<\/p>\n
public synchronized void increment() {
\n count++;
\n }<\/p>\n
public synchronized void decrement() {
\n count–;
\n }<\/p>\n
public synchronized int getCount() {
\n return count;
\n }
\n}<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d， increment \u548c decrement \u65b9\u6cd5\u90fd\u7528 synchronized \u5173\u952e\u5b57\u6807\u8bb0\u3002\u8fd9\u610f\u5473\u7740\u5f53\u4e00\u4e2a\u7ebf\u7a0b\u6b63\u5728\u6267\u884c increment \u6216 decrement \u65b9\u6cd5\u65f6，\u5176\u4ed6\u7ebf\u7a0b\u5c06\u65e0\u6cd5\u8fdb\u5165\u8fd9\u4e9b\u65b9\u6cd5，\u76f4\u5230\u7b2c\u4e00\u4e2a\u7ebf\u7a0b\u9000\u51fa\u3002 <\/p>\n
\u670d\u52a1\u5668\u7ecf\u5e38\u9700\u8981\u540c\u65f6\u5904\u7406\u6765\u81ea\u591a\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42，\u8fd9\u5c31\u9700\u8981\u9009\u62e9\u4e00\u4e2a\u9002\u5f53\u7684\u7ebf\u7a0b\u6a21\u578b，\u4ee5\u786e\u4fdd\u9ad8\u6548\u7684\u8d44\u6e90\u5229\u7528\u548c\u826f\u597d\u7684\u53ef\u4f38\u7f29\u6027\u3002 <\/p>\n
\u5355\u7ebf\u7a0b\u670d\u52a1\u5668\u662f\u5b9e\u73b0\u6700\u7b80\u5355\u7684\u670d\u52a1\u5668\u6a21\u578b\u3002\u5b83\u6309\u7167\u8bf7\u6c42\u5230\u8fbe\u7684\u987a\u5e8f，\u9010\u4e2a\u5904\u7406\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u3002\u5355\u7ebf\u7a0b\u670d\u52a1\u5668\u7684\u7f3a\u70b9\u662f\u65e0\u6cd5\u5145\u5206\u5229\u7528\u73b0\u4ee3\u591a\u6838\u5904\u7406\u5668\u7684\u5e76\u884c\u5904\u7406\u80fd\u529b\u3002\u7136\u800c，\u7531\u4e8e\u5176\u7ed3\u6784\u7b80\u5355，\u5355\u7ebf\u7a0b\u670d\u52a1\u5668\u5728\u8d44\u6e90\u5360\u7528\u548c\u5f00\u53d1\u590d\u6742\u5ea6\u65b9\u9762\u5177\u6709\u4f18\u52bf，\u9002\u7528\u4e8e\u8f7b\u8d1f\u8f7d\u7684\u573a\u666f\u3002 <\/p>\n
\u591a\u7ebf\u7a0b\u670d\u52a1\u5668\u6a21\u578b\u901a\u8fc7\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u521b\u5efa\u4e00\u4e2a\u5355\u72ec\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u5e76\u53d1\u8fde\u63a5\u3002\u8fd9\u5141\u8bb8\u670d\u52a1\u5668\u540c\u65f6\u54cd\u5e94\u591a\u4e2a\u5ba2\u6237\u7aef，\u63d0\u9ad8\u4e86\u670d\u52a1\u5668\u7684\u541e\u5410\u91cf\u548c\u54cd\u5e94\u6027\u3002\u7136\u800c，\u7ebf\u7a0b\u7684\u521b\u5efa\u548c\u7ba1\u7406\u662f\u6709\u5f00\u9500\u7684，\u8fc7\u591a\u7684\u7ebf\u7a0b\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6027\u80fd\u95ee\u9898，\u7279\u522b\u662f\u5728\u9ad8\u5e76\u53d1\u73af\u5883\u4e0b\u3002 <\/p>\n
\u7ebf\u7a0b\u6c60\u6a21\u578b\u901a\u8fc7\u91cd\u7528\u4e00\u7ec4\u6709\u9650\u6570\u91cf\u7684\u7ebf\u7a0b\u6765\u54cd\u5e94\u591a\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42，\u4ece\u800c\u89e3\u51b3\u4e86\u591a\u7ebf\u7a0b\u6a21\u578b\u7684\u67d0\u4e9b\u6027\u80fd\u95ee\u9898\u3002Java\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684 Executor \u6846\u67b6\u6765\u5b9e\u73b0\u7ebf\u7a0b\u6c60\u6a21\u578b\u3002 <\/p>\n
import java.util.concurrent.ExecutorService;
\nimport java.util.concurrent.Executors;<\/p>\n
public class ThreadPoolServer {
\n private static final int POOL_SIZE = 10;<\/p>\n
public static void main(String[] args) {
\n ExecutorService executor = Executors.newFixedThreadPool(POOL_SIZE);<\/p>\n
\/\/ \u63d0\u4ea4\u4efb\u52a1\u5230\u7ebf\u7a0b\u6c60
\n for (int i = 0; i < 100; i++) {
\n executor.submit(new ClientTask("\u5ba2\u6237\u7aef " + i));
\n }<\/p>\n
\/\/ \u5173\u95ed\u7ebf\u7a0b\u6c60，\u4e0d\u518d\u63a5\u53d7\u65b0\u4efb\u52a1，\u4f46\u4f1a\u6267\u884c\u5b8c\u5df2\u63d0\u4ea4\u7684\u4efb\u52a1
\n executor.shutdown();
\n }
\n}<\/p>\n
class ClientTask implements Runnable {
\n private String clientName;<\/p>\n
public ClientTask(String clientName) {
\n this.clientName = clientName;
\n }<\/p>\n
@Override
\n public void run() {
\n System.out.println(clientName + " \u6b63\u5728\u5904\u7406\u4efb\u52a1\u3002");
\n \/\/ \u6a21\u62df\u4efb\u52a1\u6267\u884c\u65f6\u95f4
\n try {
\n Thread.sleep(1000);
\n } catch (InterruptedException e) {
\n Thread.currentThread().interrupt();
\n }
\n }
\n}<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d，\u6211\u4eec\u4f7f\u7528 Executors.newFixedThreadPool \u65b9\u6cd5\u521b\u5efa\u4e86\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u7ebf\u7a0b\u6c60\u3002\u7136\u540e\u901a\u8fc7\u8c03\u7528 submit \u65b9\u6cd5，\u5c06\u4efb\u52a1\u63d0\u4ea4\u7ed9\u7ebf\u7a0b\u6c60\u6267\u884c\u3002\u5f53\u6240\u6709\u4efb\u52a1\u90fd\u6267\u884c\u5b8c\u6bd5\u540e，\u901a\u8fc7\u8c03\u7528 shutdown \u65b9\u6cd5\u6765\u5173\u95ed\u7ebf\u7a0b\u6c60\u3002 <\/p>\n
\u7ebf\u7a0b\u6c60\u6a21\u578b\u7684\u4f18\u52bf\u5728\u4e8e\u80fd\u591f\u6709\u6548\u7ba1\u7406\u7ebf\u7a0b\u8d44\u6e90，\u51cf\u5c11\u7ebf\u7a0b\u521b\u5efa\u548c\u9500\u6bc1\u7684\u5f00\u9500，\u9002\u7528\u4e8e\u5904\u7406\u5927\u91cf\u5e76\u53d1\u8bf7\u6c42\u7684\u573a\u666f\u3002 <\/p>\n
\u901a\u8fc7\u5bf9\u6bd4\u8fd9\u4e09\u79cd\u670d\u52a1\u5668\u6a21\u578b，\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u6bcf\u79cd\u6a21\u578b\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f18\u7f3a\u70b9\u3002\u5728\u8bbe\u8ba1\u670d\u52a1\u5668\u65f6，\u9700\u8981\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u6a21\u578b，\u6216\u8005\u751a\u81f3\u8bbe\u8ba1\u4e00\u4e2a\u6df7\u5408\u6a21\u578b\u6765\u540c\u65f6\u5229\u7528\u4e0d\u540c\u6a21\u578b\u7684\u4f18\u70b9\u3002 <\/p>\n
TCP\/IP\u534f\u8bae\u6808\u662f\u4e00\u79cd\u5206\u5c42\u7684\u7f51\u7edc\u901a\u4fe1\u6a21\u578b，\u5b83\u5c06\u6574\u4e2a\u7f51\u7edc\u901a\u4fe1\u8fc7\u7a0b\u5212\u5206\u4e3a\u4e0d\u540c\u7684\u5c42\u6b21，\u6bcf\u4e00\u5c42\u90fd\u627f\u62c5\u7740\u4e0d\u540c\u7684\u529f\u80fd\u3002\u8fd9\u4e9b\u5c42\u6b21\u5305\u62ec： <\/p>\n
\u6bcf\u4e00\u5c42\u901a\u8fc7\u5b9a\u4e49\u81ea\u5df1\u7684\u534f\u8bae\u6765\u5b9e\u73b0\u89c4\u5b9a\u7684\u529f\u80fd，\u5e76\u4e3a\u4e0a\u5c42\u63d0\u4f9b\u670d\u52a1\u3002\u6570\u636e\u5728\u53d1\u9001\u65f6，\u4ece\u5e94\u7528\u5c42\u9010\u5c42\u5411\u4e0b\u4f20\u9012，\u7ecf\u8fc7\u5c01\u88c5；\u5728\u63a5\u6536\u65f6，\u4ece\u7f51\u7edc\u63a5\u53e3\u5c42\u9010\u5c42\u5411\u4e0a\u89e3\u6790，\u76f4\u5230\u5e94\u7528\u5c42\u3002 <\/p>\n
TCP（\u4f20\u8f93\u63a7\u5236\u534f\u8bae） \u662f\u4e00\u79cd\u9762\u5411\u8fde\u63a5\u7684\u3001\u53ef\u9760\u7684\u3001\u57fa\u4e8e\u5b57\u8282\u6d41\u7684\u4f20\u8f93\u5c42\u901a\u4fe1\u534f\u8bae\u3002\u5b83\u7684\u4e3b\u8981\u7279\u70b9\u5305\u62ec： <\/p>\n
UDP（\u7528\u6237\u6570\u636e\u62a5\u534f\u8bae） \u662f\u4e00\u79cd\u65e0\u8fde\u63a5\u7684\u7f51\u7edc\u534f\u8bae，\u5b83\u7684\u4e3b\u8981\u7279\u70b9\u5305\u62ec： <\/p>\n
TCP\u548cUDP\u4f5c\u4e3a\u4e24\u79cd\u57fa\u7840\u7684\u7f51\u7edc\u534f\u8bae，\u6709\u5176\u5404\u81ea\u7684\u4f18\u52bf\u548c\u52a3\u52bf，\u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u5e94\u6839\u636e\u5e94\u7528\u9700\u6c42\u548c\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u534f\u8bae\u3002 <\/p>\n
TCP\u901a\u8fc7\u4e09\u6b21\u63e1\u624b\u5efa\u7acb\u8fde\u63a5，\u901a\u8fc7\u56db\u6b21\u6325\u624b\u65ad\u5f00\u8fde\u63a5，\u786e\u4fdd\u4e86\u8fde\u63a5\u7684\u53ef\u9760\u6027\u3002\u6570\u636e\u4f20\u8f93\u8fc7\u7a0b\u4e2d，TCP\u901a\u8fc7\u5e8f\u5217\u53f7\u548c\u786e\u8ba4\u5e94\u7b54\u6765\u786e\u4fdd\u6570\u636e\u5305\u7684\u987a\u5e8f\u548c\u53ef\u9760\u6027\u3002 <\/p>\n
TCP\u9002\u7528\u4e8e： <\/p>\n
UDP\u901a\u8fc7\u7b80\u5355\u7684\u6821\u9a8c\u548c\u68c0\u6d4b\u6765\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027，\u4f46\u662f\u4e0d\u4fdd\u8bc1\u987a\u5e8f\u548c\u53ef\u9760\u6027，\u4e22\u5931\u7684\u6570\u636e\u5305\u4e0d\u4f1a\u91cd\u53d1\u3002 <\/p>\n
UDP\u9002\u7528\u4e8e： <\/p>\n
\u7531\u4e8eUDP\u7684\u4f4e\u5ef6\u8fdf\u548c\u4f4e\u5f00\u9500，\u5b83\u5728\u8981\u6c42\u5feb\u901f\u4f20\u8f93\u7684\u5e94\u7528\u4e2d\u663e\u5f97\u5c24\u4e3a\u6709\u7528，\u5c3d\u7ba1\u53ef\u80fd\u4f1a\u6709\u6570\u636e\u4e22\u5931\u7684\u98ce\u9669\u3002 <\/p>\n
\u5728\u4e0b\u4e00\u7ae0\u8282，\u6211\u4eec\u5c06\u63a2\u8ba8\u5982\u4f55\u901a\u8fc7\u5e94\u7528\u5c42\u534f\u8bae\u6765\u6784\u5efa\u66f4\u4e3a\u590d\u6742\u548c\u529f\u80fd\u4e30\u5bcc\u7684\u7f51\u7edc\u5e94\u7528\u3002\u6211\u4eec\u4f1a\u5206\u6790TCP\/UDP\u534f\u8bae\u5728\u5177\u4f53\u5e94\u7528\u4e2d\u7684\u4f7f\u7528，\u5e76\u8ba8\u8bba\u5982\u4f55\u8bbe\u8ba1\u7f51\u7edc\u534f\u8bae\u6765\u6ee1\u8db3\u4e0d\u540c\u7684\u4e1a\u52a1\u9700\u6c42\u3002 <\/p>\n
\u5728\u6784\u5efa\u7f51\u7edc\u5e94\u7528\u65f6，\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\u5e76\u8fdb\u884c\u76f8\u5e94\u7684\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u662f\u670d\u52a1\u5668\u7aef\u4ee3\u7801\u7684\u6838\u5fc3\u90e8\u5206\u3002\u4e3a\u4e86\u6784\u5efa\u4e00\u4e2a\u9ad8\u6548\u4e14\u53ef\u6269\u5c55\u7684\u7f51\u7edc\u5e94\u7528，\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u7684\u5b9e\u73b0\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u63a7\u5236\u8bf7\u6c42\u7684\u5904\u7406\u8fc7\u7a0b，\u4ee5\u53ca\u7075\u6d3b\u5730\u5b9e\u73b0\u5404\u79cd\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\u3002\u672c\u7ae0\u5c06\u6df1\u5165\u63a2\u8ba8\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0，\u4ee5\u53ca\u5982\u4f55\u5728\u5904\u7406\u5668\u4e2d\u89e3\u6790\u548c\u7ec4\u88c5\u6570\u636e\u5305，\u4ee5\u53ca\u5904\u7406\u4e1a\u52a1\u903b\u8f91\u3002 <\/p>\n
\u5728\u8bbe\u8ba1\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u65f6，\u9996\u5148\u8981\u8003\u8651\u8bf7\u6c42\u7684\u5904\u7406\u6d41\u7a0b\u3002\u8bf7\u6c42\u5904\u7406\u6d41\u7a0b\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4： <\/p>\n
\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u7684\u751f\u547d\u5468\u671f\u5f00\u59cb\u4e8e\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u5230\u8fbe，\u5e76\u7ed3\u675f\u4e8e\u54cd\u5e94\u7684\u53d1\u9001\u5b8c\u6210\u3002\u5728Java\u4e2d，\u8fd9\u901a\u5e38\u662f\u901a\u8fc7\u8986\u76d6HttpServlet\u4e2d\u7684 service \u65b9\u6cd5\u6765\u5b9e\u73b0\u7684\u3002\u4e00\u4e2a\u5178\u578b\u7684\u5904\u7406\u5668\u751f\u547d\u5468\u671f\u7684\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b： <\/p>\n
public class MyCustomHandler extends HttpServlet {
\n protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
\n \/\/ 1. \u63a5\u6536\u8bf7\u6c42
\n \/\/ 2. \u89e3\u6790\u8bf7\u6c42
\n \/\/ 3. \u6267\u884c\u4e1a\u52a1\u903b\u8f91
\n \/\/ 4. \u7ec4\u88c5\u54cd\u5e94
\n \/\/ 5. \u53d1\u9001\u54cd\u5e94
\n }
\n}<\/p>\n
\u5728\u4e0a\u8ff0\u4f2a\u4ee3\u7801\u4e2d，\u867d\u7136\u6ca1\u6709\u6d89\u53ca\u5230\u5177\u4f53\u7684\u5b9e\u73b0\u7ec6\u8282，\u4f46\u5c55\u793a\u4e86\u5904\u7406\u5668\u751f\u547d\u5468\u671f\u7684\u5173\u952e\u70b9\u3002 <\/p>\n
\u5728\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u4e2d，\u6570\u636e\u5305\u7684\u89e3\u6790\u548c\u7ec4\u88c5\u662f\u5904\u7406\u8fc7\u7a0b\u7684\u57fa\u7840\u3002\u5728TCP\/UDP\u534f\u8bae\u4e2d，\u6570\u636e\u5305\u53ef\u80fd\u4ee5\u5b57\u8282\u6d41\u7684\u5f62\u5f0f\u5230\u8fbe\u5904\u7406\u5668\u3002\u56e0\u6b64，\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u4e00\u79cd\u6570\u636e\u7ed3\u6784\u548c\u534f\u8bae\u89e3\u6790\u5668，\u5c06\u5b57\u8282\u6d41\u8f6c\u6362\u4e3a\u4e1a\u52a1\u903b\u8f91\u80fd\u591f\u5904\u7406\u7684\u683c\u5f0f\u3002 <\/p>\n
\u5728Java\u4e2d，\u53ef\u4ee5\u4f7f\u7528 ByteBuffer \u6765\u5904\u7406\u5b57\u8282\u6d41，\u901a\u8fc7\u504f\u79fb\u91cf\u548c\u957f\u5ea6\u6765\u8bfb\u53d6\u7279\u5b9a\u7684\u5b57\u8282\u5e8f\u5217\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u4f8b\u5b50，\u5c55\u793a\u5982\u4f55\u4ece\u5b57\u8282\u6d41\u4e2d\u63d0\u53d6\u6570\u636e： <\/p>\n
public class PacketParser {
\n public MyRequestObject parseRequest(ByteBuffer buffer) {
\n \/\/ \u5047\u8bbeMyRequestObject\u662f\u81ea\u5b9a\u4e49\u7684\u8bf7\u6c42\u5bf9\u8c61
\n MyRequestObject request = new MyRequestObject();<\/p>\n
\/\/ \u89e3\u6790\u51fa\u6570\u636e\u5305\u7684\u5404\u4e2a\u90e8\u5206
\n int length = buffer.getInt();
\n byte[] header = new byte[12]; \/\/ \u5047\u8bbe\u5934\u90e8\u56fa\u5b9a\u957f\u5ea6\u4e3a12\u5b57\u8282
\n buffer.get(header);
\n String data = new String(buffer.array(), buffer.position(), length – 12);<\/p>\n
\/\/ \u5c06\u89e3\u6790\u51fa\u7684\u6570\u636e\u8d4b\u503c\u7ed9\u8bf7\u6c42\u5bf9\u8c61
\n request.setHeader(header);
\n request.setData(data);<\/p>\n
return request;
\n }
\n}<\/p>\n
\u7ec4\u88c5\u54cd\u5e94\u7684\u8fc7\u7a0b\u5219\u4e0e\u89e3\u6790\u8fc7\u7a0b\u76f8\u53cd，\u9700\u8981\u5c06\u54cd\u5e94\u5bf9\u8c61\u8f6c\u6362\u6210\u5b57\u8282\u6d41\u7684\u5f62\u5f0f，\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002 <\/p>\n
\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u662f\u81ea\u5b9a\u4e49\u5904\u7406\u5668\u4e2d\u6700\u4e3a\u6838\u5fc3\u7684\u90e8\u5206\u3002\u5f00\u53d1\u8005\u9700\u8981\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u5b9e\u73b0\u5177\u4f53\u7684\u4e1a\u52a1\u903b\u8f91\u3002\u901a\u5e38，\u8fd9\u90e8\u5206\u4ee3\u7801\u4f1a\u6d89\u53ca\u5230\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u3001\u7b2c\u4e09\u65b9\u670d\u52a1\u7684\u8c03\u7528\u7b49\u3002 <\/p>\n
\u5728\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u90e8\u5206，\u63a8\u8350\u4f7f\u7528\u72b6\u6001\u6a21\u5f0f\u6765\u63a7\u5236\u4e0d\u540c\u4e1a\u52a1\u573a\u666f\u4e0b\u5904\u7406\u5668\u7684\u884c\u4e3a\u3002\u8fd9\u6837\u53ef\u4ee5\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6e05\u6670，\u5e76\u4e14\u6613\u4e8e\u7ef4\u62a4\u548c\u6269\u5c55\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5316\u7684\u4e1a\u52a1\u903b\u8f91\u5904\u7406\u65b9\u6cd5\u793a\u4f8b： <\/p>\n
public class MyCustomHandler extends HttpServlet {
\n protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
\n MyRequestObject requestObject = parseRequest(request.getInputStream());<\/p>\n
switch (requestObject.getCommandType()) {
\n case "LOGIN":
\n handleLogin(requestObject, response);
\n break;
\n case "REGISTER":
\n handleRegister(requestObject, response);
\n break;
\n \/\/ \u66f4\u591a\u7684\u4e1a\u52a1\u903b\u8f91\u5904\u7406…
\n }
\n }<\/p>\n
private void handleLogin(MyRequestObject requestObject, HttpServletResponse response) {
\n \/\/ \u6267\u884c\u767b\u5f55\u76f8\u5173\u7684\u4e1a\u52a1\u903b\u8f91
\n \/\/ …
\n \/\/ \u53d1\u9001\u54cd\u5e94
\n \/\/ …
\n }<\/p>\n
private void handleRegister(MyRequestObject requestObject, HttpServletResponse response) {
\n \/\/ \u6267\u884c\u6ce8\u518c\u76f8\u5173\u7684\u4e1a\u52a1\u903b\u8f91
\n \/\/ …
\n \/\/ \u53d1\u9001\u54cd\u5e94
\n \/\/ …
\n }
\n}<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d，\u5904\u7406\u5668\u9996\u5148\u89e3\u6790\u8bf7\u6c42，\u7136\u540e\u6839\u636e\u8bf7\u6c42\u7684\u547d\u4ee4\u7c7b\u578b\u8c03\u7528\u76f8\u5e94\u7684\u5904\u7406\u65b9\u6cd5\u3002\u8fd9\u91cc\u4f7f\u7528\u4e86 switch \u8bed\u53e5，\u4f46\u5728\u590d\u6742\u7684\u4e1a\u52a1\u573a\u666f\u4e2d，\u53ef\u80fd\u9700\u8981\u8003\u8651\u4f7f\u7528\u66f4\u7075\u6d3b\u7684\u7b56\u7565\u6a21\u5f0f\u6216\u8005\u547d\u4ee4\u6a21\u5f0f\u6765\u5904\u7406\u4e0d\u540c\u7684\u4e1a\u52a1\u573a\u666f\u3002 <\/p>\n
\u5f02\u5e38\u5904\u7406\u662f\u7f16\u5199\u5065\u58ee\u7684\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002\u5728Java\u4e2d，\u5f02\u5e38\u5904\u7406\u673a\u5236\u662f\u901a\u8fc7\u5173\u952e\u5b57try\u3001catch\u3001finally\u548cthrow\u6765\u5b9e\u73b0\u7684\u3002\u7406\u89e3\u5e76\u6b63\u786e\u4f7f\u7528\u8fd9\u4e9b\u5173\u952e\u5b57\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u5728\u53d1\u751f\u9519\u8bef\u65f6\u6709\u6548\u5730\u6062\u590d\u7a0b\u5e8f\u7684\u6267\u884c\u6d41\u7a0b，\u6216\u8005\u4f18\u96c5\u5730\u7ec8\u6b62\u7a0b\u5e8f\u3002 <\/p>\n
\u5f02\u5e38\u662f\u7a0b\u5e8f\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u7684\u4e0d\u6b63\u5e38\u60c5\u51b5，\u5f53\u8fd9\u79cd\u60c5\u51b5\u53d1\u751f\u65f6，\u4f1a\u5f15\u53d1\u5f02\u5e38\u3002\u5f02\u5e38\u5904\u7406\u673a\u5236\u5141\u8bb8\u7a0b\u5e8f\u5728\u9047\u5230\u5f02\u5e38\u65f6，\u4e0d\u5fc5\u7ec8\u6b62\u8fd0\u884c，\u800c\u662f\u8df3\u8f6c\u5230\u9884\u5148\u5b9a\u4e49\u597d\u7684\u5f02\u5e38\u5904\u7406\u4ee3\u7801\u5757\u4e2d\u8fdb\u884c\u5904\u7406\u3002 <\/p>\n
\u5728Java\u4e2d，\u5f02\u5e38\u53ef\u4ee5\u5206\u4e3a\u4e24\u5927\u7c7b：\u68c0\u67e5\u578b\u5f02\u5e38（checked exceptions）\u548c\u975e\u68c0\u67e5\u578b\u5f02\u5e38（unchecked exceptions）\u3002 <\/p>\n
\u5904\u7406\u5f02\u5e38\u7684\u6700\u5e38\u89c1\u65b9\u5f0f\u662f\u4f7f\u7528try-catch\u5757\u3002\u4e00\u4e2atry\u5757\u540e\u9762\u53ef\u4ee5\u8ddf\u968f\u591a\u4e2acatch\u5757，\u6bcf\u4e2acatch\u5757\u53ef\u4ee5\u6355\u83b7\u4e00\u79cd\u7c7b\u578b\u7684\u5f02\u5e38\u3002\u5982\u679c\u5728try\u5757\u4e2d\u7684\u4ee3\u7801\u6267\u884c\u65f6\u53d1\u751f\u4e86\u5f02\u5e38，\u90a3\u4e48\u5c31\u5bfb\u627e\u80fd\u591f\u5339\u914d\u7684catch\u5757\u3002 <\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5f02\u5e38\u5904\u7406\u793a\u4f8b\u4ee3\u7801： <\/p>\n
try {
\n \/\/ \u53ef\u80fd\u53d1\u751f\u5f02\u5e38\u7684\u4ee3\u7801\u5757
\n int result = 10 \/ 0;
\n} catch (ArithmeticException e) {
\n \/\/ \u6355\u83b7\u5e76\u5904\u7406\u7279\u5b9a\u7c7b\u578b\u7684\u5f02\u5e38
\n System.out.println("\u6570\u5b66\u8fd0\u7b97\u9519\u8bef：" + e.getMessage());
\n} finally {
\n \/\/ \u8fd9\u4e2a\u4ee3\u7801\u5757\u603b\u662f\u4f1a\u88ab\u6267\u884c
\n System.out.println("\u65e0\u8bba\u662f\u5426\u6355\u83b7\u5f02\u5e38，finally\u5757\u90fd\u4f1a\u6267\u884c\u3002");
\n}<\/p>\n
\u5f53\u65b9\u6cd5\u4e2d\u53d1\u751f\u5f02\u5e38，\u4e14\u65b9\u6cd5\u672c\u8eab\u4e0d\u80fd\u5904\u7406\u8fd9\u4e2a\u5f02\u5e38\u65f6，\u53ef\u4ee5\u4f7f\u7528throw\u5173\u952e\u5b57\u629b\u51fa\u5f02\u5e38\u3002\u88ab\u629b\u51fa\u7684\u5f02\u5e38\u53ef\u4ee5\u662f\u68c0\u67e5\u578b\u5f02\u5e38\u6216\u975e\u68c0\u67e5\u578b\u5f02\u5e38，\u53d6\u51b3\u4e8e\u65b9\u6cd5\u662f\u5426\u58f0\u660e\u4e86\u5b83\u8981\u629b\u51fa\u7684\u5f02\u5e38\u3002 <\/p>\n
public void readFile(String path) throws IOException {
\n File file = new File(path);
\n \/\/ \u5047\u8bbe\u8fd9\u91cc\u4f7f\u7528\u4e86\u67d0\u4e2a\u7b2c\u4e09\u65b9\u5e93，\u8be5\u5e93\u53ef\u80fd\u629b\u51faIOException
\n if (!file.exists()) {
\n throw new FileNotFoundException("\u6587\u4ef6\u4e0d\u5b58\u5728：" + path);
\n }
\n \/\/ …
\n}<\/p>\n
\u670d\u52a1\u5668\u5e94\u7528\u9700\u8981\u8003\u8651\u7f51\u7edc\u5f02\u5e38\u3001\u670d\u52a1\u5668\u8d44\u6e90\u95ee\u9898\u7b49\u5f02\u5e38\u60c5\u51b5\u3002\u6b63\u786e\u5730\u7ba1\u7406\u8fd9\u4e9b\u5f02\u5e38，\u80fd\u591f\u63d0\u5347\u670d\u52a1\u5668\u7684\u7a33\u5b9a\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002 <\/p>\n
\u7f51\u7edc\u5f02\u5e38\u5305\u62ec\u8fde\u63a5\u8d85\u65f6\u3001\u8fde\u63a5\u65ad\u5f00\u7b49，\u8fd9\u4e9b\u5f02\u5e38\u7ecf\u5e38\u53d1\u751f\u3002\u5728\u670d\u52a1\u5668\u7aef\u5904\u7406\u8fd9\u4e9b\u5f02\u5e38\u7684\u7b56\u7565\u901a\u5e38\u662f\u91cd\u65b0\u5c1d\u8bd5\u8fde\u63a5\u6216\u8005\u8bb0\u5f55\u65e5\u5fd7，\u5e76\u901a\u77e5\u7528\u6237\u3002 <\/p>\n
Socket socket = null;
\ntry {
\n \/\/ \u5c1d\u8bd5\u5efa\u7acb\u8fde\u63a5
\n socket = new Socket(host, port);
\n \/\/ \u8fdb\u884c\u901a\u4fe1…
\n} catch (ConnectException ce) {
\n \/\/ \u8fde\u63a5\u5f02\u5e38\u5904\u7406，\u53ef\u80fd\u662f\u56e0\u4e3a\u76ee\u6807\u4e3b\u673a\u4e0d\u53ef\u8fbe
\n System.err.println("\u8fde\u63a5\u5931\u8d25：" + ce.getMessage());
\n} catch (SocketTimeoutException ste) {
\n \/\/ \u8d85\u65f6\u5f02\u5e38\u5904\u7406
\n System.err.println("\u8fde\u63a5\u8d85\u65f6：" + ste.getMessage());
\n} finally {
\n if (socket != null) {
\n try {
\n socket.close();
\n } catch (IOException e) {
\n \/\/ \u5173\u95ed\u65f6\u7684\u5f02\u5e38\u53ef\u4ee5\u8bb0\u5f55\u65e5\u5fd7
\n System.err.println("\u65e0\u6cd5\u5173\u95edsocket：" + e.getMessage());
\n }
\n }
\n}<\/p>\n
\u670d\u52a1\u5668\u8fd0\u884c\u65f6\u53ef\u80fd\u4f1a\u9047\u5230\u7684\u5f02\u5e38\u5305\u62ec\u5185\u5b58\u6ea2\u51fa\u3001\u914d\u7f6e\u9519\u8bef\u7b49\u3002\u8fd9\u4e9b\u5f02\u5e38\u53ef\u80fd\u4f1a\u5bfc\u81f4\u670d\u52a1\u5668\u7a0b\u5e8f\u5d29\u6e83\u3002\u5e94\u5bf9\u7b56\u7565\u5305\u62ec\u914d\u7f6e\u5408\u9002\u7684\u5185\u5b58\u5806\u5927\u5c0f\u3001\u8bbe\u7f6e\u7ebf\u7a0b\u6c60\u5927\u5c0f\u3001\u8fdb\u884c\u7cfb\u7edf\u76d1\u63a7\u7b49\u3002 <\/p>\n
public void startServer() {
\n \/\/ \u670d\u52a1\u5668\u914d\u7f6e\u4e0e\u521d\u59cb\u5316
\n \/\/ …
\n try {
\n while (true) {
\n \/\/ \u670d\u52a1\u5668\u4e3b\u5faa\u73af
\n \/\/ …
\n }
\n } catch (OutOfMemoryError e) {
\n \/\/ \u5185\u5b58\u6ea2\u51fa\u5904\u7406，\u53ef\u4ee5\u5c1d\u8bd5\u6e05\u7406\u8d44\u6e90，\u8bb0\u5f55\u65e5\u5fd7\u7b49
\n System.err.println("\u670d\u52a1\u5668\u5185\u5b58\u6ea2\u51fa：" + e.getMessage());
\n } catch (Throwable th) {
\n \/\/ \u5176\u4ed6\u8fd0\u884c\u65f6\u9519\u8bef\u5904\u7406
\n System.err.println("\u670d\u52a1\u5668\u8fd0\u884c\u65f6\u9519\u8bef：" + th.getMessage());
\n } finally {
\n \/\/ \u5173\u95ed\u670d\u52a1\u5668\u8d44\u6e90，\u8fdb\u884c\u5fc5\u8981\u7684\u6e05\u7406\u5de5\u4f5c
\n System.out.println("\u670d\u52a1\u5668\u6b63\u5728\u5173\u95ed…");
\n }
\n}<\/p>\n
\u670d\u52a1\u5668\u5f02\u5e38\u7ba1\u7406\u662f\u4fdd\u8bc1\u670d\u52a1\u5668\u7a33\u5b9a\u8fd0\u884c\u7684\u5173\u952e\u90e8\u5206，\u9700\u8981\u5f00\u53d1\u8005\u6839\u636e\u5b9e\u9645\u5e94\u7528\u573a\u666f\u548c\u4e1a\u52a1\u903b\u8f91\u4ed4\u7ec6\u8bbe\u8ba1\u5f02\u5e38\u5904\u7406\u7b56\u7565\u3002\u826f\u597d\u7684\u5f02\u5e38\u7ba1\u7406\u7b56\u7565\u53ef\u4ee5\u51cf\u8f7b\u8fd0\u7ef4\u7684\u538b\u529b，\u907f\u514d\u56e0\u5f02\u5e38\u5f15\u53d1\u7684\u670d\u52a1\u5668\u505c\u673a\u548c\u6570\u636e\u4e22\u5931\u98ce\u9669\u3002 <\/p>\n
\u5728\u672c\u7ae0\u8282\u4e2d，\u6211\u4eec\u4ecb\u7ecd\u4e86Java\u4e2d\u7684\u5f02\u5e38\u5904\u7406\u57fa\u7840\u77e5\u8bc6，\u5305\u62ec\u5f02\u5e38\u7684\u5206\u7c7b\u3001\u6355\u83b7\u548c\u5904\u7406\u4ee5\u53ca\u629b\u51fa\u5f02\u5e38\u7684\u65f6\u673a\u3002\u6b64\u5916，\u8fd8\u63a2\u8ba8\u4e86\u5728\u670d\u52a1\u5668\u5e94\u7528\u4e2d\u5982\u4f55\u5904\u7406\u7f51\u7edc\u5f02\u5e38\u548c\u8fd0\u884c\u65f6\u5f02\u5e38，\u5305\u62ec\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u548c\u5f02\u5e38\u5904\u7406\u7b56\u7565\u3002\u8fd9\u4e9b\u8ba8\u8bba\u4e3a\u6784\u5efa\u5065\u58ee\u7684\u7f51\u7edc\u5e94\u7528\u7a0b\u5e8f\u5960\u5b9a\u4e86\u575a\u5b9e\u7684\u57fa\u7840\u3002<\/p>\n
# 6. \u7f51\u7edc\u5e94\u7528\u6784\u5efa\u793a\u4f8b\u4e0e\u6027\u80fd\u4f18\u5316\u7b56\u7565<\/p>\n
## 6.1 \u6784\u5efa\u7b80\u5355\u7684SocketServer\u5e94\u7528<\/p>\n
### 6.1.1 \u5e94\u7528\u9700\u6c42\u5206\u6790
\n\u5728\u6784\u5efa\u4e00\u4e2a\u7b80\u5355\u7684SocketServer\u7f51\u7edc\u5e94\u7528\u65f6，\u9996\u5148\u9700\u8981\u660e\u786e\u5e94\u7528\u7684\u9700\u6c42\u3002\u4f8b\u5982，\u6211\u4eec\u53ef\u4ee5\u8bbe\u8ba1\u4e00\u4e2a\u652f\u6301\u591a\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u804a\u5929\u670d\u52a1\u5668，\u5b83\u5141\u8bb8\u5ba2\u6237\u7aef\u767b\u5f55\u3001\u53d1\u9001\u6d88\u606f\u7ed9\u5176\u4ed6\u5ba2\u6237\u7aef\u4ee5\u53ca\u63a5\u6536\u6765\u81ea\u5176\u4ed6\u5ba2\u6237\u7aef\u7684\u6d88\u606f\u3002\u8fd9\u6837\u7684\u670d\u52a1\u7aef\u5e94\u7528\u901a\u5e38\u9700\u8981\u7ef4\u62a4\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u72b6\u6001，\u8f6c\u53d1\u6d88\u606f\u4ee5\u53ca\u63d0\u4f9b\u7a33\u5b9a\u7684\u8fde\u63a5\u4fdd\u8bc1\u3002<\/p>\n
### 6.1.2 \u5e94\u7528\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0
\n\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e2a\u804a\u5929\u670d\u52a1\u5668，\u6211\u4eec\u53ef\u4ee5\u91c7\u7528\u591a\u7ebf\u7a0b\u670d\u52a1\u5668\u6a21\u578b，\u4e3a\u6bcf\u4e2a\u5ba2\u6237\u7aef\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\u6765\u5904\u7406\u5ba2\u6237\u7aef\u7684\u6d88\u606f\u3002\u5728Java\u4e2d，\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528`ServerSocket`\u6765\u76d1\u542c\u6307\u5b9a\u7aef\u53e3\u7684\u5165\u7ad9\u8fde\u63a5，\u5e76\u63a5\u53d7\u5ba2\u6237\u7aef\u7684\u8fde\u63a5\u8bf7\u6c42\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u670d\u52a1\u5668\u7aef\u5b9e\u73b0\u793a\u4f8b：<\/p>\n
```java
\nimport java.io.*;
\nimport java.net.*;<\/p>\n
public class ChatServer {
\n private ServerSocket serverSocket;<\/p>\n
public ChatServer(int port) throws IOException {
\n serverSocket = new ServerSocket(port);
\n }<\/p>\n
public void start() {
\n while (true) {
\n try {
\n Socket clientSocket = serverSocket.accept();
\n new ClientHandler(clientSocket).start();
\n } catch (IOException ex) {
\n System.out.println("Server exception: " + ex.getMessage());
\n ex.printStackTrace();
\n }
\n }
\n }<\/p>\n
public static void main(String[] args) throws IOException {
\n ChatServer server = new ChatServer(6666);
\n server.start();
\n }
\n}<\/p>\n
class ClientHandler extends Thread {
\n private Socket clientSocket;
\n private PrintWriter out;
\n private BufferedReader in;<\/p>\n
public ClientHandler(Socket socket) throws IOException {
\n this.clientSocket = socket;
\n out = new PrintWriter(socket.getOutputStream(), true);
\n in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
\n }<\/p>\n
public void run() {
\n String inputLine;
\n try {
\n while ((inputLine = in.readLine()) != null) {
\n System.out.println("Received: " + inputLine);
\n out.println("ServerEcho: " + inputLine);
\n }
\n } catch (IOException ex) {
\n System.out.println("Server exception: " + ex.getMessage());
\n ex.printStackTrace();
\n } finally {
\n try {
\n in.close();
\n out.close();
\n clientSocket.close();
\n } catch (IOException ex) {
\n ex.printStackTrace();
\n }
\n }
\n }
\n}<\/p>\n
\u5728\u8fd9\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4e2d，\u670d\u52a1\u5668\u76d1\u542c\u7aef\u53e36666，\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u5230\u670d\u52a1\u5668\u7684\u5ba2\u6237\u7aef\u521b\u5efa\u4e00\u4e2a ClientHandler \u7ebf\u7a0b\u3002 <\/p>\n
\u6027\u80fd\u6d4b\u8bd5\u662f\u9a8c\u8bc1\u548c\u8bc4\u4f30\u7cfb\u7edf\u5728\u7279\u5b9a\u8d1f\u8f7d\u4e0b\u6027\u80fd\u6307\u6807\u7684\u8fc7\u7a0b\u3002\u5bf9\u4e8e\u7f51\u7edc\u5e94\u7528，\u6027\u80fd\u6d4b\u8bd5\u53ef\u4ee5\u5305\u62ec\u5e76\u53d1\u7528\u6237\u6d4b\u8bd5\u3001\u54cd\u5e94\u65f6\u95f4\u6d4b\u8bd5\u3001\u541e\u5410\u91cf\u6d4b\u8bd5\u548c\u8d44\u6e90\u5229\u7528\u7387\u6d4b\u8bd5\u7b49\u3002\u8fdb\u884c\u6027\u80fd\u6d4b\u8bd5\u65f6，\u53ef\u4ee5\u91c7\u7528JMeter\u3001LoadRunner\u7b49\u5de5\u5177\u6a21\u62df\u591a\u7528\u6237\u5e76\u53d1\u8bbf\u95ee\u670d\u52a1\u5668，\u8bb0\u5f55\u670d\u52a1\u5668\u7684\u54cd\u5e94\u65f6\u95f4\u548c\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\u3002 <\/p>\n
\u4e3a\u4e86\u63d0\u5347\u6027\u80fd，\u53ef\u4ee5\u91c7\u53d6\u591a\u79cd\u4f18\u5316\u7b56\u7565： <\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528 NIO \u7684\u7b80\u5355\u670d\u52a1\u5668\u5b9e\u73b0\u793a\u4f8b，\u4f7f\u7528\u4e86 Selector \u6765\u5904\u7406\u591a\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5： <\/p>\n
import java.io.*;
\nimport java.net.*;
\nimport java.nio.*;
\nimport java.nio.channels.*;<\/p>\n
public class NioChatServer {
\n private Selector selector;
\n private ServerSocketChannel serverSocketChannel;<\/p>\n
public NioChatServer(int port) throws IOException {
\n serverSocketChannel = ServerSocketChannel.open();
\n serverSocketChannel.socket().bind(new InetSocketAddress(port));
\n serverSocketChannel.configureBlocking(false);
\n selector = Selector.open();
\n serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);
\n }<\/p>\n
public void start() {
\n while (true) {
\n try {
\n int readyChannels = selector.select();
\n if (readyChannels == 0) continue;<\/p>\n
Set<SelectionKey> selectionKeys = selector.selectedKeys();
\n Iterator<SelectionKey> iterator = selectionKeys.iterator();
\n while (iterator.hasNext()) {
\n SelectionKey key = iterator.next();
\n if (key.isAcceptable()) {
\n SocketChannel clientChannel = serverSocketChannel.accept();
\n clientChannel.configureBlocking(false);
\n clientChannel.register(selector, SelectionKey.OP_READ);
\n } else if (key.isReadable()) {
\n SocketChannel clientChannel = (SocketChannel) key.channel();
\n ByteBuffer buffer = ByteBuffer.allocate(1024);
\n int bytesRead = clientChannel.read(buffer);
\n if (bytesRead > 0) {
\n buffer.flip();
\n clientChannel.write(buffer);
\n } else if (bytesRead == -1) {
\n clientChannel.close();
\n key.cancel();
\n }
\n }
\n iterator.remove();
\n }
\n } catch (IOException ex) {
\n System.out.println("Server exception: " + ex.getMessage());
\n ex.printStackTrace();
\n }
\n }
\n }<\/p>\n
public static void main(String[] args) throws IOException {
\n NioChatServer server = new NioChatServer(6666);
\n server.start();
\n }
\n}<\/p>\n
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\u7b80\u4ecb：SocketServer\u662f\u4e00\u4e2aJava\u6846\u67b6，\u7528\u4e8e\u521b\u5efa\u57fa\u4e8eTCP\/UDP\u7684\u670d\u52a1\u5668\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u6846\u67b6\u901a\u8fc7\u63d0\u4f9b\u9ad8\u7ea7\u62bd\u8c61\u7b80\u5316\u4e86\u591a\u7ebf\u7a0b\u3001\u53ef\u6269\u5c55\u670d\u52a1\u5668\u7684\u5f00\u53d1\u3002\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86SocketServer\u7684\u57fa\u7840\u6982\u5ff5\u3001\u591a\u7ebf\u7a0b\u6a21\u578b\u3001\u4e3b\u8981\u7c7b\u548c\u63a5\u53e3\u3001\u4f7f\u7528\u6b65\u9aa4\u3001\u5f02\u5e38\u5904\u7406\u3001\u5e94\u7528\u793a\u4f8b\u53ca\u6027\u80fd\u4f18\u5316\u548c\u5b89\u5168\u6027\u3002\u5f00\u53d1\u8005\u53ef\u4ee5\u4f7f\u7528SocketServer\u6846\u67b6\u521b\u5efa\u5404\u79cd\u7f51\u7edc\u5e94\u7528，\u5982\u804a\u5929\u670d\u52a1\u5668\u3001\u6587\u4ef6\u4f20\u8f93\u670d\u52a1\u5668\u7b49，\u5e76\u9700\u8981\u8003\u8651\u7ebf\u7a0b\u6c60\u7ba1\u7406\u548c\u7f51\u7edc\u5b89\u5168\u63aa\u65bd\u3002 <\/p>\n
\u672c\u6587\u8fd8\u6709\u914d\u5957\u7684\u7cbe\u54c1\u8d44\u6e90，\u70b9\u51fb\u83b7\u53d6 <\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
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