- \n
- TCP\u662f\u53ef\u9760\u7684：\u8fd9\u4e2a\u9700\u8981\u53bb\u4e86\u89e3TCP\u7684\u673a\u5236，\u8fd9\u662f\u4e00\u4e2a\u5927\u5de5\u7a0b，\u535a\u4e3b\u540e\u9762\u5199\u597d\u4e86\u628a\u8fde\u63a5\u9644\u4e0a<\/li>\n
- TCP\u662f\u9762\u5411\u5b57\u8282\u6d41\u7684<\/li>\n
- TCP\u662f\u5168\u53cc\u5de5\u7684<\/li>\n
- TCP\u662f\u6709\u8fde\u63a5\u7684<\/li>\n<\/ul>\n
\u9664\u4e86\u53ef\u9760\u6027，\u5728\u7f16\u7a0b\u4e2d\u65e0\u6cd5\u4f53\u4f1a\u5230，\u5176\u4ed6\u7279\u6027\u6211\u90fd\u4f1a\u4e00 \u4e00\u8bb2\u89e3\u3002<\/p>\n
\u4e8c\u3001API\u4ecb\u7ecd\u00a0<\/h2>\n
1.ServerSocket<\/h3>\n
ServerSocket <\/span><\/span>\u662f\u521b\u5efaTCP\u670d\u52a1\u7aefSocket\u7684API<\/span><\/span> <\/p>\n
ServerSocket <\/span>\u6784\u9020\u2f45\u6cd5：<\/span><\/p>\n
\n
\u65b9\u6cd5\u7b7e\u540d\u65b9\u6cd5\u8bf4\u660e<\/tr>\n \n\n ServerSocket(int port)<\/td>\n \u521b\u5efa\u4e00\u4e2a\u670d\u52a1\u7aef\u6d41\u5957\u63a5\u5b57Socket,\u5e76\u7ed1\u5b9a\u5230\u6307\u5b9a\u7aef\u53e3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n ServerSocket <\/span>\u2f45\u6cd5：<\/span> <\/p>\n
\n
\n \u2f45\u6cd5\u7b7e\u540d<\/span> <\/p>\n
\u2f45\u6cd5\u8bf4\u660e<\/span>
\n <\/tr>\n\n\n Socket accpet()<\/td>\n \u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3（\u521b\u5efa\u65f6\u7ed1\u5b9a\u7aef\u53e3），\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u540e，\u8fd4\u56de\u4e00\u4e2a\u670d\u52a1\u7aefSocket\u5bf9\u8c61，\u5e76\u57fa\u4e8eSocket\u5efa\u7acb\u4e0e\u5ba2\u6237\u7aef\u7684\u8fde\u63a5，\u5426\u5219\u963b\u585e\u7b49\u5f85<\/span><\/td>\n<\/tr>\n \n void close()<\/td>\n \n \u5173\u95ed\u6b64\u5957\u63a5\u5b57<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a02.Socket<\/h3>\n
Socket <\/span><\/span>
\n \u662f\u5ba2\u2f3e\u7aefSocket<\/span>，\u6216\u670d\u52a1\u7aef\u4e2d\u63a5\u6536\u5230\u5ba2\u2f3e\u7aef\u5efa\u2f74\u8fde\u63a5（accept\u2f45\u6cd5）\u7684\u8bf7\u6c42\u540e，\u8fd4\u56de\u7684\u670d\u52a1\u7aefSocket\u3002<\/span><\/span> <\/p>\n\u4e0d\u7ba1\u662f\u5ba2\u2f3e\u7aef\u8fd8\u662f\u670d\u52a1\u7aefSocket，\u90fd\u662f\u53cc\u2f45\u5efa\u2f74\u8fde\u63a5\u4ee5\u540e，\u4fdd\u5b58\u7684\u5bf9\u65b9\u4fe1\u606f，\u53ca\u2f64\u6765\u4e0e\u5bf9\u2f45\u6536\u53d1\u6570\u636e\u7684<\/span>\u3002<\/span> <\/p>\n
\u00a0Socket\u6784\u9020\u65b9\u6cd5：<\/p>\n
\n
\u65b9\u6cd5\u7b7e\u540d\u65b9\u6cd5\u8bf4\u660e<\/tr>\n \n\n Socket(String host, int port)<\/td>\n \n \u521b\u5efa\u4e00\u4e2a\u5ba2\u6237\u7aef\u6d41\u5957\u63a5\u5b57Socket，\u5e76\u4e0e\u5bf9\u5e94IP\u7684\u4e3b\u673a\u4e0a，\u5bf9\u5e94\u7aef\u53e3\u7684\u8fdb\u7a0b\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n
host：IP\u5730\u5740<\/p>\n
prot：\u7aef\u53e3\u53f7<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u00a0\u8fd9\u91ccnew\u51fa\u6765\u5c31\u662f\u548c\u5bf9\u65b9\u5efa\u7acb\u5b8c\u6210\u4e86<\/span>\u3002\u5982\u679c\u5efa\u7acb\u5931\u8d25，\u5c31\u4f1a\u5728\u6784\u9020\u5bf9\u8c61\u7684\u65f6\u5019\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n
Socket\u65b9\u6cd5：<\/p>\n
\n
\u65b9\u6cd5\u7b7e\u540d\u65b9\u6cd5\u8bf4\u660e<\/tr>\n \n\n \n InetAddress getInetAddress()<\/span>\n <\/td>\n
\n \u8fd4\u56de\u5957\u63a5\u5b57\u6240\u8fde\u63a5\u7684\u5730\u5740<\/span><\/span>\n <\/td>\n<\/tr>\n
\n \n InputStream getInputStream()<\/span>\n <\/td>\n
\n \u8fd4\u56de\u6b64\u5957\u63a5\u5b57\u7684\u8f93\u2f0a\u6d41<\/span>\n <\/td>\n<\/tr>\n
\n \n OutputStream getOutputStream()<\/span>\n <\/td>\n
\n \u8fd4\u56de\u6b64\u5957\u63a5\u5b57\u7684\u8f93\u51fa\u6d41<\/span>\n <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4e09\u3001\u5b9e\u73b0\u670d\u52a1\u5668<\/h2>\n
\u670d\u52a1\u5668\u9700\u8981\u6307\u5b9a\u7aef\u53e3\u53f7：<\/p>\n
public class TcpEchoServer {<\/p>\n
private ServerSocket serverSocket = null;<\/p>\n
\/\/ \u9700\u8981\u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3 \u5904\u7406ServerSocket\u629b\u51fa\u7684\u5f02\u5e38
\n public TcpEchoServer(int port) throws IOException {
\n \/\/ \u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3
\n serverSocket = new ServerSocket(port);
\n }
\n} <\/p>\n\u6ce8\u610f\u5904\u7406\u629b\u51fa\u7684\u5f02\u5e38<\/p>\n
\u548c\u5ba2\u6237\u7aef\u5efa\u7acb\u8fde\u63a5：<\/p>\n
public class TcpEchoServer {<\/p>\n
private ServerSocket serverSocket = null;<\/p>\n
\/\/ \u9700\u8981\u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3 \u5904\u7406ServerSocket\u629b\u51fa\u7684\u5f02\u5e38
\n public TcpEchoServer(int port) throws IOException {
\n \/\/ \u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3
\n serverSocket = new ServerSocket(port);
\n }<\/p>\npublic void start() throws IOException {
\n \/\/\u670d\u52a1\u5668\u9700\u8981\u4e0d\u505c\u7684\u6267\u884c
\n while (true) {<\/p>\n\/\/\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3，\u5f53\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u540e，\u8fd4\u56de\u4e00\u4e2a\u4fdd\u5b58\u5bf9\u65b9\u4fe1\u606f\u7684Socket
\n Socket clientSocket = serverSocket.accept();
\n \/\/\u5904\u7406\u903b\u8f91
\n processConnection(clientSocket);
\n }<\/p>\n}<\/p>\n
\/\/\u9488\u5bf9\u4e00\u4e2a\u8fde\u63a5，\u63d0\u4f9b\u5904\u7406\u903b\u8f91
\n private void processConnection(Socket clientSocket) {<\/p>\n}
\n}<\/p>\n\u8fd9\u91cc\u7684accept()\u5c31\u4f53\u73b0\u4e86TCP\u7684\u6709\u8fde\u63a5<\/span><\/p>\n<\/p>\n
\u5f53\u8fde\u63a5\u6210\u529f\u540e，\u9700\u8981\u5904\u7406\u7684\u903b\u8f91：<\/p>\n
\/\/\u9488\u5bf9\u4e00\u4e2a\u8fde\u63a5，\u63d0\u4f9b\u5904\u7406\u903b\u8f91
\n private void processConnection(Socket clientSocket) {
\n \/\/\u6253\u5370\u5ba2\u6237\u7aef\u7684\u4fe1\u606f \u8fd4\u56deIP\u5730\u5740 \u8fd4\u56de\u7aef\u53e3\u53f7
\n System.out.printf("[%s : %d]\u5ba2\u6237\u7aef\u4e0a\u7ebf\\\\n",clientSocket.getInetAddress(), clientSocket.getPort());<\/p>\n\/\/\u83b7\u53d6\u5230socket\u4e2d\u6301\u6709\u7684\u6d41\u5bf9\u8c61
\n try(InputStream inputStream = clientSocket.getInputStream();
\n OutputStream outputStream = clientSocket.getOutputStream()) {<\/p>\nwhile (true) {
\n \/\/1.\u83b7\u53d6\u8bf7\u6c42<\/p>\n\/\/2.\u5904\u7406\u8bf7\u6c42<\/p>\n
\/\/3.\u8fd4\u56de\u54cd\u5e94<\/p>\n
\/\/4.\u6253\u5370\u65e5\u5fd7
\n }<\/p>\n}catch (IOException e) {<\/p>\n
}
\n } <\/p>\n\u5168\u53cc\u5de5\u7684\u610f\u601d：\u901a\u4fe1\u7684\u53cc\u65b9（\u5982\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668）\u53ef\u4ee5\u5728\u540c\u4e00\u65f6\u95f4\u5185\u540c\u65f6\u8fdb\u884c\u6570\u636e\u7684\u53d1\u9001\u548c\u63a5\u6536，\u5373\u4e24\u4e2a\u65b9\u5411\u7684\u6570\u636e\u6d41\u53ef\u4ee5\u540c\u65f6\u4f20\u8f93，\u4e92\u4e0d\u5e72\u6270\u3002<\/p>\n
\u8fd9\u91cc\u7684getInputStream\u3001getOutputStream\u5c31\u4f53\u73b0\u4e86\u5168\u53cc\u5de5\u548c\u9762\u5411\u5b57\u8282\u6d41\u3002<\/p>\n
\u4e0d\u4e86\u89e3\u8fd9\u4e24\u4e2a\u63a5\u53e3\u7684\u53ef\u4ee5\u53bb\u770b\u6211\u8fd9\u7bc7\u6587\u7ae0：<\/p>\n
JAVA\u5982\u4f55\u64cd\u4f5c\u6587\u4ef6？（\u8d85\u7ea7\u8be6\u7ec6）_java\u64cd\u4f5c\u6587\u4ef6-CSDN\u535a\u5ba2<\/p>\n<\/p>\n
\u5b9e\u73b0\u5904\u7406\u903b\u8f91：<\/p>\n
\/\/\u9488\u5bf9\u4e00\u4e2a\u8fde\u63a5，\u63d0\u4f9b\u5904\u7406\u903b\u8f91
\n private void processConnection(Socket clientSocket) {
\n \/\/\u6253\u5370\u5ba2\u6237\u7aef\u7684\u4fe1\u606f \u8fd4\u56deIP\u5730\u5740 \u8fd4\u56de\u7aef\u53e3\u53f7
\n System.out.printf("[%s : %d]\u5ba2\u6237\u7aef\u4e0a\u7ebf\\\\n",clientSocket.getInetAddress(), clientSocket.getPort());<\/p>\n\/\/\u83b7\u53d6\u5230socket\u4e2d\u6301\u6709\u7684\u6d41\u5bf9\u8c61
\n try(InputStream inputStream = clientSocket.getInputStream();
\n OutputStream outputStream = clientSocket.getOutputStream()) {<\/p>\n\/\/\u56e0\u4e3a\u6211\u4eec\u7528\u5b57\u7b26\u4e32\u6765\u505a\u4e3a\u6570\u636e\u4f20\u8f93，\u7528Scanner\u5c31\u53ef\u4ee5\u66f4\u65b9\u4fbf\u7684\u4f20\u8f93\u4e86
\n Scanner scanner = new Scanner(inputStream);
\n \/\/\u5305\u88c5\u8f93\u51fa\u6d41，\u4e3b\u8981\u662f\u7528println()\u4f1a\u5728\u6570\u636e\u4e4b\u540e\u52a0\u4e0a\\\\n
\n PrintWriter printWriter = new PrintWriter(outputStream);<\/p>\nwhile (true) {
\n \/\/1.\u83b7\u53d6\u8bf7\u6c42
\n if (!scanner.hasNext()) {
\n \/\/\u5982\u679cscanner\u65e0\u6cd5\u8bfb\u53d6\u51fa\u6570\u636e，\u8bf4\u660e\u5ba2\u6237\u7aef\u65ad\u5f00\u4e86\u8fde\u63a5，\u5bfc\u81f4\u670d\u52a1\u5668\u8fd9\u8fb9\u8bfb\u53d6\u5230\u201d\u672b\u5c3e\u201c
\n break;
\n }
\n \/\/2.\u5904\u7406\u8bf7\u6c42
\n \/\/\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42
\n \/\/\u5982\u679c\u9047\u5230 \u7a7a\u767d\u5b57\u7b26 \u5c31\u4f1a\u505c\u6b62\u8f93\u5165
\n String request = scanner.next();
\n \/\/\u5904\u7406\u8bf7\u6c42
\n String response = process(request);
\n \/\/3.\u8fd4\u56de\u54cd\u5e94
\n \/\/\u6b64\u5904\u53ef\u4ee5\u6309\u5b57\u8282\u6570\u7ec4\u7684\u5f62\u5f0f,\u4f46\u662f\u6211\u4eec\u8981\u8f93\u5165\u7684\u662f\u5b57\u7b26\u4e32，\u8fd9\u4e2a\u5c31\u4e0d\u592a\u65b9\u4fbf
\n \/\/outputStream.write(response.getBytes());<\/p>\n\/\/\u6b64\u65b9\u6cd5\u5728\u5199\u5165\u4e4b\u540e\u4f1a\u81ea\u52a8\u52a0\u4e0a\\\\n
\n printWriter.println(response);<\/p>\n\/\/4.\u6253\u5370\u65e5\u5fd7
\n System.out.printf("[%s : %d] \u8bf7\u6c42 = %s \u54cd\u5e94 = %s \\\\n",clientSocket.getInetAddress(),clientSocket.getPort(),
\n request,response);
\n }<\/p>\n}catch (IOException e) {
\n throw new RuntimeException();
\n }
\n }<\/p>\nprivate String process(String request) {
\n \/\/\u7531\u4e8e\u6211\u4eec\u662f\u56de\u663e\u670d\u52a1\u5668\u8fd9\u91cc\u76f4\u63a5\u8fd4\u56de\u5c31\u53ef\u4ee5\u4e86
\n return request;
\n } <\/p>\n\u6ce8\u610f\u91cc\u9762\u4f7f\u7528\u4e86\u4e24\u4e2a\u63a5\u53e3\u5305\u88c5\u4e86\u4e00\u4e0b\u8f93\u5165\u8f93\u51fa\u6d41，\u6700\u4e3b\u8981\u7684\u662f\u53ef\u4ee5\u5728\u7528\\\\n\u505a\u4e3a\u5206\u5272\u3002<\/p>\n<\/p>\n
\u6ce8\u610f\u91cc\u9762\u7684：<\/p>\n
\u53d1\u9001\u5b57\u7b26\u4e32\u7ed9\u5ba2\u6237\u7aef，\u6700\u540e\u4f1a\u81ea\u52a8\u52a0\u4e0a \\\\n \u505a\u4e3a\u7ed3\u5c3e<\/p>\n
println(response); <\/p>\n
\u63a5\u6536\u5ba2\u6237\u7aef\u4fe1\u606f，\u4ee5\u7a7a\u767d\u7b26\u505a\u4e3a\u7ed3\u5c3e\u3002<\/p>\n
\u7a7a\u767d\u7b26：\u5305\u62ec\u4e0d\u9650\u4e8e \u7a7a\u683c\u3001\u56de\u8f66\u3001\u5236\u8868\u7b26\u2026\u2026<\/p>\n<\/p>\n
scanner.next(); <\/p>\n
\u5982\u679c\u662fnextLine()\u5c31\u6bd4\u8f83\u4e25\u683c，\u5fc5\u987b\u662f\\\\n\u505a\u4e3a\u7ed3\u5c3e<\/p>\n<\/p>\n
\u8fd9\u91cc\u7684\u670d\u52a1\u5668\u5904\u7406\u903b\u8f91\u5c31\u5199\u5b8c\u4e86，\u4f46\u5176\u5b9e\u8fd9\u91cc\u8fd8\u6709\u4e09\u4e2a\u9519\u8bef，\u540e\u9762\u518d\u5355\u72ec\u8bb2\u89e3：<\/p>\n
public class TcpEchoServer {<\/p>\n
private ServerSocket serverSocket = null;<\/p>\n
\/\/ \u9700\u8981\u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3 \u5904\u7406ServerSocket\u629b\u51fa\u7684\u5f02\u5e38
\n public TcpEchoServer(int port) throws IOException {
\n \/\/ \u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3
\n serverSocket = new ServerSocket(port);
\n }<\/p>\npublic void start() throws IOException {
\n \/\/\u670d\u52a1\u5668\u9700\u8981\u4e0d\u505c\u7684\u6267\u884c
\n while (true) {<\/p>\n\/\/\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3，\u5f53\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u540e，\u8fd4\u56de\u4e00\u4e2a\u4fdd\u5b58\u5bf9\u65b9\u4fe1\u606f\u7684Socket
\n Socket clientSocket = serverSocket.accept();
\n \/\/\u5904\u7406\u903b\u8f91
\n processConnection(clientSocket);
\n }<\/p>\n}<\/p>\n
\/\/\u9488\u5bf9\u4e00\u4e2a\u8fde\u63a5，\u63d0\u4f9b\u5904\u7406\u903b\u8f91
\n private void processConnection(Socket clientSocket) {
\n \/\/\u6253\u5370\u5ba2\u6237\u7aef\u7684\u4fe1\u606f \u8fd4\u56deIP\u5730\u5740 \u8fd4\u56de\u7aef\u53e3\u53f7
\n System.out.printf("[%s : %d]\u5ba2\u6237\u7aef\u4e0a\u7ebf\\\\n",clientSocket.getInetAddress(), clientSocket.getPort());<\/p>\n\/\/\u83b7\u53d6\u5230socket\u4e2d\u6301\u6709\u7684\u6d41\u5bf9\u8c61
\n try(InputStream inputStream = clientSocket.getInputStream();
\n OutputStream outputStream = clientSocket.getOutputStream()) {<\/p>\n\/\/\u56e0\u4e3a\u6211\u4eec\u7528\u5b57\u7b26\u4e32\u6765\u505a\u4e3a\u6570\u636e\u4f20\u8f93，\u7528Scanner\u5c31\u53ef\u4ee5\u66f4\u65b9\u4fbf\u7684\u4f20\u8f93\u4e86
\n Scanner scanner = new Scanner(inputStream);
\n \/\/\u5305\u88c5\u8f93\u51fa\u6d41，\u4e3b\u8981\u662f\u7528println()\u4f1a\u5728\u6570\u636e\u4e4b\u540e\u52a0\u4e0a\\\\n
\n PrintWriter printWriter = new PrintWriter(outputStream);<\/p>\nwhile (true) {
\n \/\/1.\u83b7\u53d6\u8bf7\u6c42
\n if (!scanner.hasNext()) {
\n \/\/\u5982\u679cscanner\u65e0\u6cd5\u8bfb\u53d6\u51fa\u6570\u636e，\u8bf4\u660e\u5ba2\u6237\u7aef\u65ad\u5f00\u4e86\u8fde\u63a5，\u5bfc\u81f4\u670d\u52a1\u5668\u8fd9\u8fb9\u8bfb\u53d6\u5230\u201d\u672b\u5c3e\u201c
\n break;
\n }
\n \/\/2.\u5904\u7406\u8bf7\u6c42
\n \/\/\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42
\n \/\/\u5982\u679c\u9047\u5230 \u7a7a\u767d\u5b57\u7b26 \u5c31\u4f1a\u505c\u6b62\u8f93\u5165
\n String request = scanner.next();
\n \/\/\u5904\u7406\u8bf7\u6c42
\n String response = process(request);
\n \/\/3.\u8fd4\u56de\u54cd\u5e94
\n \/\/\u6b64\u5904\u53ef\u4ee5\u6309\u5b57\u8282\u6570\u7ec4\u7684\u5f62\u5f0f,\u4f46\u662f\u6211\u4eec\u8981\u8f93\u5165\u7684\u662f\u5b57\u7b26\u4e32，\u8fd9\u4e2a\u5c31\u4e0d\u592a\u65b9\u4fbf
\n \/\/outputStream.write(response.getBytes());<\/p>\n\/\/\u6b64\u65b9\u6cd5\u5728\u5199\u5165\u4e4b\u540e\u4f1a\u81ea\u52a8\u52a0\u4e0a\\\\n
\n printWriter.println(response);<\/p>\n\/\/4.\u6253\u5370\u65e5\u5fd7
\n System.out.printf("[%s : %d] \u8bf7\u6c42 = %s \u54cd\u5e94 = %s \\\\n",clientSocket.getInetAddress(),clientSocket.getPort(),
\n request,response);
\n }<\/p>\n}catch (IOException e) {
\n throw new RuntimeException();
\n }
\n }<\/p>\nprivate String process(String request) {
\n \/\/\u7531\u4e8e\u6211\u4eec\u662f\u56de\u663e\u670d\u52a1\u5668\u8fd9\u91cc\u76f4\u63a5\u8fd4\u56de\u5c31\u53ef\u4ee5\u4e86
\n return request;
\n }<\/p>\npublic static void main(String[] args) throws IOException {
\n TcpEchoServer server = new TcpEchoServer(8080);
\n server.start();
\n }
\n} <\/p>\n<\/p>\n\u56db\u3001\u5b9e\u73b0\u5ba2\u6237\u7aef<\/h2>\n<\/p>\n
\u6307\u5b9a\u670d\u52a1\u5668\u7684IP\u548c\u7aef\u53e3\u53f7：<\/p>\n
public class TcpEchoClient {<\/p>\n
private Socket socket = null;<\/p>\n
public TcpEchoClient(String serverIP, int serverPort) throws IOException {
\n \/\/\u8fd9\u91cc\u53ea\u8981\u5efa\u7acb\u5b9e\u4f8b，\u5c31\u662f\u548c\u670d\u52a1\u7aef\u7684accept()\u5efa\u7acb\u4e86\u8fde\u63a5
\n \/\/socket\u4e5f\u5c31\u4fdd\u5b58\u4e86\u670d\u52a1\u5668\u7684IP\u548c\u7aef\u53e3\u53f7\u7b49
\n \/\/\u9700\u8981\u4f20\u5165\u670d\u52a1\u5668\u7684 IP\u5730\u5740 \u548c \u7aef\u53e3\u53f7
\n socket = new Socket(serverIP, serverPort);
\n }<\/p>\npublic void start() {
\n System.out.println("\u5ba2\u6237\u7aef\u542f\u52a8!");
\n }<\/p>\n} <\/p>\n
\u6574\u4f53\u903b\u8f91：<\/p>\n
public class TcpEchoClient {<\/p>\n
private Socket socket = null;<\/p>\n
public TcpEchoClient(String serverIP, int serverPort) throws IOException {
\n \/\/\u9700\u8981\u4f20\u5165\u670d\u52a1\u5668\u7684 IP\u5730\u5740 \u548c \u7aef\u53e3\u53f7
\n \/\/\u8fd9\u91cc\u53ea\u8981\u5efa\u7acb\u5b9e\u4f8b，\u5c31\u662f\u548c\u670d\u52a1\u7aef\u7684accept()\u5efa\u7acb\u4e86\u8fde\u63a5
\n socket = new Socket(serverIP, serverPort);
\n }<\/p>\npublic void start() {
\n System.out.println("\u5ba2\u6237\u7aef\u542f\u52a8!");<\/p>\ntry(OutputStream outputStream = socket.getOutputStream();
\n InputStream inputStream = socket.getInputStream()) {<\/p>\nwhile (true) {
\n \/\/1.\u4ece\u63a7\u5236\u53f0\u83b7\u53d6\u6570\u636e<\/p>\n\/\/2.\u5c06\u6570\u636e\u53d1\u9001\u7ed9\u670d\u52a1\u5668<\/p>\n
\/\/3.\u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94<\/p>\n
\/\/4.\u6253\u5370\u76f8\u5173\u7ed3\u679c
\n }<\/p>\n}catch (IOException e) {
\n throw new RuntimeException();
\n }
\n }
\n} <\/p>\n\u6574\u4f53\u903b\u8f91\u5b9e\u73b0：<\/p>\n
public class TcpEchoClient {<\/p>\n
private Socket socket = null;<\/p>\n
public TcpEchoClient(String serverIP, int serverPort) throws IOException {
\n \/\/\u8fd9\u91cc\u53ea\u8981\u5efa\u7acb\u5b9e\u4f8b，\u5c31\u662f\u548c\u670d\u52a1\u7aef\u7684accept()\u5efa\u7acb\u4e86\u8fde\u63a5
\n \/\/socket\u4e5f\u5c31\u4fdd\u5b58\u4e86\u670d\u52a1\u5668\u7684IP\u548c\u7aef\u53e3\u53f7\u7b49
\n \/\/\u9700\u8981\u4f20\u5165\u670d\u52a1\u5668\u7684 IP\u5730\u5740 \u548c \u7aef\u53e3\u53f7
\n socket = new Socket(serverIP, serverPort);
\n }<\/p>\npublic void start() {
\n System.out.println("\u5ba2\u6237\u7aef\u542f\u52a8!");<\/p>\ntry(OutputStream outputStream = socket.getOutputStream();
\n InputStream inputStream = socket.getInputStream()) {<\/p>\n\/\/\u7528\u6765\u63a5\u6536\u670d\u52a1\u5668\u7684\u4fe1\u606f
\n Scanner scanner = new Scanner(inputStream);
\n \/\/\u7528\u4e8e\u63a5\u6536\u7528\u6237\u8f93\u5165
\n Scanner scannerIn = new Scanner(System.in);
\n \/\/\u7528\u4e8e\u8f93\u51fa\u6570\u636e\u7ed9\u670d\u52a1\u5668
\n PrintWriter printWriter = new PrintWriter(outputStream);<\/p>\nwhile (true) {
\n \/\/1.\u4ece\u63a7\u5236\u53f0\u83b7\u53d6\u6570\u636e
\n System.out.print("->");
\n String request = scannerIn.next();<\/p>\n\/\/2.\u5c06\u6570\u636e\u53d1\u9001\u7ed9\u670d\u52a1\u5668
\n printWriter.println(request);<\/p>\n\/\/3.\u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94
\n \/\/\u5224\u65ad\u670d\u52a1\u7aef\u662f\u5426\u8fd8\u6709\u4fe1\u606f
\n if (!scanner.hasNext()) {
\n break;
\n }
\n \/\/\u63a5\u6536\u670d\u52a1\u7aef\u4fe1\u606f
\n String response = scanner.next();
\n \/\/4.\u6253\u5370\u76f8\u5173\u7ed3\u679c<\/p>\nSystem.out.println(response);
\n }<\/p>\n}catch (IOException e) {
\n throw new RuntimeException();
\n }
\n }<\/p>\npublic static void main(String[] args) throws IOException {
\n\/\/ 127.0.0.1\u662f\u4e13\u95e8\u7528\u6765\u8bbf\u95ee\u81ea\u5df1\u7684
\n TcpEchoClient client = new TcpEchoClient("127.0.0.1",8080);
\n client.start();
\n }
\n} <\/p>\n\u8fd9\u91cc\u4ecd\u7136\u7eaf\u5728\u4e00\u4e2a\u95ee\u9898，\u4e00\u4f1a\u548c\u670d\u52a1\u5668\u7684\u95ee\u9898\u4e00\u8d77\u5c06<\/p>\n<\/p>\n
\u4e94\u3001\u6d4b\u8bd5\u89e3\u51b3bug<\/h2>\n
\u6700\u540e\u6211\u4f1a\u628a\u6240\u6709\u7684\u95ee\u9898\u89e3\u51b3\u4e86，\u518d\u628a\u6e90\u9644\u4e0a<\/p>\n
1.\u5ba2\u6237\u7aef\u53d1\u9001\u4e86\u6570\u636e\u4e4b\u540e，\u5e76\u6ca1\u6709\u54cd\u5e94<\/h3>\n
\u00a0\u5148\u8fd0\u884c\u670d\u52a1\u5668，\u518d\u8fd0\u884c\u5ba2\u6237\u7aef<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221049-6813f16933df7.png\")
<\/p>\n\u53ef\u4ee5\u770b\u5230\u76ee\u524d\u8fd8\u662f\u6210\u529f\u7684，\u90a3\u4e48\u6211\u4eec\u6765\u8f93\u5165\u6570\u636e\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221049-6813f1698e58d.png\")
<\/p>\n\u6211\u4eec\u5728\u5ba2\u6237\u7aef\u8f93\u5165\u4e86\u6d88\u606f，\u4f46\u662f\u6ca1\u6709\u4efb\u4f55\u53cd\u5e94\u4e86！<\/p>\n
\u6b64\u5904\u7684\u60c5\u51b5\u662f，\u5ba2\u6237\u7aef\u5e76\u6ca1\u6709\u771f\u6b63\u628a\u8bf7\u6c42\u53d1\u51fa\u53bb：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221049-6813f169a5953.png\")
<\/p>\nPrintWriter\u8fd9\u6837\u7684\u7c7b，\u4ee5\u53ca\u5f88\u591aIO\u6d41\u4e2d\u7684\u7c7b，\u90fd\u662f \u201c\u81ea\u5e26\u7f13\u51b2\u533a\u201d \u7684\u3002<\/p>\n
\u6b64\u65b9\u6cd5\u5c31\u5e26\u6709\u7f13\u51b2\u533a：<\/p>\n
printWriter.println(request); <\/p>\n
\u5f15\u5165\u7f13\u51b2\u533a\u4e4b\u540e，\u8fdb\u884c\u5199\u5165\u6570\u636e\u7684\u64cd\u4f5c，\u5e76\u4e0d\u4f1a\u9a6c\u4e0a\u89e6\u53d1IO，\u800c\u662f\u5148\u653e\u5230\u5185\u5b58\u7f13\u51b2\u533a\u4e2d，\u7b49\u5230\u7f13\u51b2\u533a\u91cc\u6512\u4e86\u4e00\u6ce2\u4e4b\u540e，\u518d\u7edf\u4e00\u8fdb\u884c\u53d1\u9001\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u5f15\u5165\u7f13\u51b2\u533a\u7684\u673a\u5236？<\/p>\n
\u56e0\u4e3aIO\u64cd\u4f5c\u5176\u5b9e\u662f\u4e0d\u5c0f\u7684\u5f00\u9500，\u5982\u679c\u6570\u636e\u91cf\u8f83\u5c11，\u90a3\u4e48\u6bcf\u4e00\u6b21\u90fd\u8fdb\u884cIO，\u5c31\u6709\u5f88\u5927\u4e00\u90e8\u5206\u5f00\u9500\u662fIO\u64cd\u4f5c\u3002\u5982\u679c\u79ef\u7d2f\u5230\u4e00\u5b9a\u6570\u636e\u91cf\u518d\u8fdb\u884cIO\u64cd\u4f5c，\u90a3\u4e48\u4e00\u6b21IO\u5c31\u4f20\u8f93\u4e86\u8fd9\u4e48\u591a\u6570\u636e\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528flush\u65b9\u6cd5，\u4e3b\u52a8\u201c\u5237\u65b0\u7f13\u51b2\u533a\u201d：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221049-6813f169b6657.png\")
<\/p>\n\u6ce8\u610f：<\/p>\n
\u670d\u52a1\u5668 \u548c \u5ba2\u6237\u7aef \u90fd\u9700\u8981\u5728printWriter.println();\u540e\u9762\u52a0\u4e0aflush()\u65b9\u6cd5\u3002<\/p>\n
\u518d\u6765\u6d4b\u8bd5：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221050-6813f16a0a0f0.png\")
<\/p>\n\u6b64\u65f6\u5c31\u53ef\u4ee5\u63a5\u6536\u5230\u4e86<\/p>\n
<\/h3>\n
<\/h3>\n
2.clientSocket\u6ca1\u6709\u6267\u884cclose()\u64cd\u4f5c<\/h3>\n
\u8fd9\u4e2a\u95ee\u9898\u6bd4\u8f83\u9690\u853d，\u8fd9\u4e9bServerSocket \u548c Socket \u6bcf\u4e00\u6b21\u90fd\u4f1a\u5728\u201c\u6587\u4ef6\u63cf\u8ff0\u7b26\u201d\u4e2d\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u8868\u9879\u3002<\/p>\n
\u6587\u4ef6\u63cf\u8ff0\u7b26：\u63cf\u8ff0\u4e86\u8be5\u8fdb\u7a0b\u90fd\u8981\u64cd\u4f5c\u54ea\u4e9b\u6587\u4ef6\u3002\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u5c31\u662f\u4e00\u4e2astruct file\u5bf9\u8c61，\u6bcf\u4e2a\u7ed3\u6784\u4f53\u5c31\u63cf\u8ff0\u4e86\u5bf9\u5e94\u7684\u6587\u4ef6\u4fe1\u606f，\u6570\u7ec4\u7684\u5c0f\u6807\u5c31\u79f0\u4e3a\u201c\u6587\u4ef6\u63cf\u8ff0\u7b26\u201d\u3002<\/p>\n
\u6bcf\u6b21\u6253\u5f00\u4e00\u4e2a\u6587\u4ef6，\u5c31\u60f3\u5f53\u4e8e\u5728\u6570\u7ec4\u4e0a\u5360\u7528\u4e86\u4e00\u4e2a\u4f4d\u7f6e，\u800c\u8fd9\u4e2a\u6570\u7ec4\u53c8\u662f\u4e0d\u80fd\u6269\u5bb9\u7684，\u5982\u679c\u6570\u7ec4\u6ee1\u4e86\u5c31\u4f1a\u6253\u5f00\u6587\u4ef6\u5931\u8d25\u3002\u9664\u975e\u4e3b\u52a8\u8c03\u7528close\u624d\u4f1a\u5173\u95ed\u6587\u4ef6，\u6216\u8005\u8fd9\u4e2a\u8fdb\u7a0b\u76f4\u63a5\u7ed3\u675f\u4e86\u8fd9\u4e2a\u6570\u7ec4\u4e5f\u88ab\u5e26\u8d70\u4e86\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221050-6813f16a24539.png\")
<\/p>\n\u90a3\u4e48\u6211\u4eec\u5c31\u9700\u8981\u5904\u7406\u4e00\u4e0bclientSocket：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221050-6813f16a8392f.png\")
<\/p>\n<\/h3>\n
\u00a03.\u5c1d\u8bd5\u4f7f\u7528\u591a\u4e2a\u5ba2\u6237\u7aef\u540c\u65f6\u8fde\u63a5\u670d\u52a1\u5668<\/h3>\n
\u8981\u5bf9\u540c\u4e00\u4ee3\u7801\u542f\u52a8\u591a\u4e2a\u8fdb\u7a0b，\u9700\u8981\u8bbe\u7f6e\u4e00\u4e0b\u6b65\u9aa4：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221050-6813f16aaa4b4.png\")
<\/p>\n<\/p>\n\u5206\u522b\u542f\u52a8\u5ba2\u6237\u7aef1 \u548c \u5ba2\u6237\u7aef2 ，\u53ef\u4ee5\u770b\u5230\u670d\u52a1\u5668\u4e0a\u6839\u672c\u6ca1\u6709\u7b2c\u4e8c\u4e2a\u5ba2\u6237\u7aef\u542f\u52a8\u7684\u4fe1\u606f：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221051-6813f16b15bb0.png\")
<\/p>\n\u539f\u56e0：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221051-6813f16b432cf.png\")
<\/p>\n<\/p>\n\u6211\u4eec\u53ef\u4ee5\u7528\u591a\u7ebf\u7a0b\u53bb\u6267\u884c\u4e13\u95e8\u6267\u884c\u6bcf\u4e00\u4e2a\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42：<\/p>\n
public void start() throws IOException {
\n \/\/\u670d\u52a1\u5668\u9700\u8981\u4e0d\u505c\u7684\u6267\u884c
\n while (true) {<\/p>\n\/\/\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3，\u5f53\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u540e，\u8fd4\u56de\u4e00\u4e2a\u4fdd\u5b58\u5bf9\u65b9\u4fe1\u606f\u7684Socket
\n Socket clientSocket = serverSocket.accept();<\/p>\n\/\/\u8ba9\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u5bf9\u5e94\u4e00\u4e2a\u5ba2\u6237\u7aef
\n Thread thread = new Thread(() -> {
\n \/\/\u5904\u7406\u903b\u8f91
\n processConnection(clientSocket);
\n });<\/p>\nthread.start();
\n }
\n } <\/p>\n\u7ed3\u679c：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221051-6813f16b7f93f.png\")
<\/p>\n<\/p>\nbug\u95ee\u9898\u89e3\u51b3\u4e86，\u4f46\u8fd8\u6709\u4e00\u4e9b\u573a\u666f，\u53ef\u80fd\u4f1a\u628a\u670d\u52a1\u5668\u5e72\u5d29\u6e83<\/p>\n<\/p>\n
\u516d\u3001\u4f18\u5316<\/h2>\n
1.\u77ed\u65f6\u95f4\u6709\u5927\u91cf\u5ba2\u6237\u7aef\u8bbf\u95ee\u5e76\u65ad\u5f00\u8fde\u63a5<\/h3>\n
\u4e00\u65e6\u77ed\u65f6\u95f4\u5185\u6709\u5927\u91cf\u7684\u5ba2\u6237\u7aef，\u5e76\u4e14\u6bcf\u4e2a\u5ba2\u6237\u7aef\u8bf7\u6c42\u90fd\u662f\u5f88\u5feb\u7684\u8fde\u63a5\u4e4b\u540e\u5e76\u9000\u51fa\u7684，\u8fd9\u4e2a\u65f6\u5019\u5bf9\u4e8e\u670d\u52a1\u5668\u6765\u8bf4，\u5c31\u4f1a\u6709\u6bd4\u8f83\u5927\u7684\u538b\u529b\u3002\u8fd9\u4e2a\u65f6\u5019，\u5c31\u7b97\u662f\u8fdb\u7a0b\u6bd4\u7ebf\u7a0b\u66f4\u52a0\u7684\u8f7b\u91cf，\u4f46\u662f\u77ed\u65f6\u95f4\u5185\u6709\u5927\u91cf\u7684\u7ebf\u7a0b\u521b\u5efa\u9500\u6bc1，\u5c31\u65e0\u6cd5\u5ffd\u7565\u5b83\u7684\u5f00\u9500\u4e86\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u5f15\u5165\u7ebf\u7a0b\u6c60，\u8fd9\u6837\u5c31\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898：<\/p>\n
public void start() throws IOException {
\n \/\/\u670d\u52a1\u5668\u9700\u8981\u4e0d\u505c\u7684\u6267\u884c
\n while (true) {<\/p>\n\/\/\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3，\u5f53\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u540e，\u8fd4\u56de\u4e00\u4e2a\u4fdd\u5b58\u5bf9\u65b9\u4fe1\u606f\u7684Socket
\n Socket clientSocket = serverSocket.accept();
\n ExecutorService service = Executors.newCachedThreadPool();<\/p>\n\/\/ \/\/\u8ba9\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u5bf9\u5e94\u4e00\u4e2a\u5ba2\u6237\u7aef
\n\/\/ Thread thread = new Thread(() -> {
\n\/\/ \/\/\u5904\u7406\u903b\u8f91
\n\/\/ try {
\n\/\/ processConnection(clientSocket);
\n\/\/ } catch (IOException e) {
\n\/\/ e.printStackTrace();
\n\/\/ }
\n\/\/ });
\n\/\/ thread.start();<\/p>\nservice.submit(() -> {
\n try {
\n processConnection(clientSocket);
\n } catch (IOException e) {
\n e.printStackTrace();
\n }
\n });
\n }
\n } <\/p>\n\u8fd9\u4e2a\u7ebf\u7a0b\u53ef\u521b\u5efa\u7684\u7ebf\u7a0b\u6570\u662f\u5f88\u5927\u7684：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/05\/20250501221051-6813f16ba8eba.png\")
<\/p>\n<\/p>\n2.\u6709\u5927\u91cf\u7684\u5ba2\u6237\u7aef\u957f\u65f6\u95f4\u5728\u7ebf\u8bbf\u95ee<\/h3>\n
\u4f8b\u5982\u76f4\u64ad\u8fd9\u6837\u7684\u60c5\u51b5，\u6bcf\u4e2a\u5ba2\u6237\u7aef\u5206\u914d\u4e00\u4e2a\u7ebf\u7a0b，\u5bf9\u4e8e\u4e00\u4e2a\u7cfb\u7edf\u6765\u8bf4，\u8fd9\u91cc\u641e\u51e0\u767e\u4e2a\u7ebf\u7a0b\u538b\u529b\u5c31\u975e\u5e38\u5927\u4e86\u3002\u6240\u4ee5\u8fd9\u91cc \u7ebf\u7a0b\u6c60\/\u7ebf\u7a0b \u90fd\u4e0d\u592a\u9002\u7528\u4e86\u3002<\/p>\n
\u53ef\u4ee5\u4f7f\u7528 IO\u591a\u8def\u590d\u7528 ，\u4e5f\u5c31\u662f\u4e00\u4e2a\u7ebf\u7a0b\u5206\u914d\u591a\u4e2a\u5ba2\u6237\u7aef\u8fdb\u884c\u670d\u52a1，\u56e0\u4e3a\u5927\u90e8\u5206\u65f6\u95f4\u7ebf\u7a0b\u90fd\u662f\u5728\u7b49\u5f85\u72b6\u6001，\u5c31\u80fd\u591f\u8ba9\u7ebf\u7a0b\u5206\u914d\u591a\u4e2a\u5ba2\u6237\u7aef，\u8fd9\u6837\u7684\u673a\u5236\u6211\u4eec\u505a\u4e3ajava\u7a0b\u5e8f\u5458\u4e0d\u9700\u8981\u8fc7\u591a\u4e86\u89e3，\u8fd9\u6837\u7684\u673a\u5236\u4ee5\u53ca\u88ab\u5927\u4f6c\u4eec，\u88c5\u8fdb\u5404\u79cd\u6846\u67b6\u4e2d\u4e86\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u6e90\u7801<\/h2>\n
\u670d\u52a1\u5668\u6e90\u7801：<\/p>\n
import java.io.IOException;
\nimport java.io.InputStream;
\nimport java.io.OutputStream;
\nimport java.io.PrintWriter;
\nimport java.net.ServerSocket;
\nimport java.net.Socket;
\nimport java.util.Scanner;
\nimport java.util.concurrent.ExecutorService;
\nimport java.util.concurrent.Executors;<\/p>\npublic class TcpEchoServer {<\/p>\n
private ServerSocket serverSocket = null;<\/p>\n
\/\/ \u9700\u8981\u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3 \u5904\u7406ServerSocket\u629b\u51fa\u7684\u5f02\u5e38
\n public TcpEchoServer(int port) throws IOException {
\n \/\/ \u6307\u5b9a\u670d\u52a1\u5668\u7684\u7aef\u53e3
\n serverSocket = new ServerSocket(port);
\n }<\/p>\npublic void start() throws IOException {
\n \/\/\u670d\u52a1\u5668\u9700\u8981\u4e0d\u505c\u7684\u6267\u884c
\n while (true) {<\/p>\n\/\/\u5f00\u59cb\u76d1\u542c\u6307\u5b9a\u7aef\u53e3，\u5f53\u6709\u5ba2\u6237\u7aef\u8fde\u63a5\u540e，\u8fd4\u56de\u4e00\u4e2a\u4fdd\u5b58\u5bf9\u65b9\u4fe1\u606f\u7684Socket
\n Socket clientSocket = serverSocket.accept();
\n ExecutorService service = Executors.newCachedThreadPool();<\/p>\n\/\/ \/\/\u8ba9\u4e00\u4e2a\u7ebf\u7a0b\u53bb\u5bf9\u5e94\u4e00\u4e2a\u5ba2\u6237\u7aef
\n\/\/ Thread thread = new Thread(() -> {
\n\/\/ \/\/\u5904\u7406\u903b\u8f91
\n\/\/ try {
\n\/\/ processConnection(clientSocket);
\n\/\/ } catch (IOException e) {
\n\/\/ e.printStackTrace();
\n\/\/ }
\n\/\/ });
\n\/\/ thread.start();<\/p>\nservice.submit(() -> {
\n try {
\n processConnection(clientSocket);
\n } catch (IOException e) {
\n e.printStackTrace();
\n }
\n });
\n }
\n }<\/p>\n\/\/\u9488\u5bf9\u4e00\u4e2a\u8fde\u63a5，\u63d0\u4f9b\u5904\u7406\u903b\u8f91
\n private void processConnection(Socket clientSocket) throws IOException {
\n \/\/\u6253\u5370\u5ba2\u6237\u7aef\u7684\u4fe1\u606f \u8fd4\u56deIP\u5730\u5740 \u8fd4\u56de\u7aef\u53e3\u53f7
\n System.out.printf("[%s : %d]\u5ba2\u6237\u7aef\u4e0a\u7ebf\\\\n",clientSocket.getInetAddress(), clientSocket.getPort());<\/p>\n\/\/\u83b7\u53d6\u5230socket\u4e2d\u6301\u6709\u7684\u6d41\u5bf9\u8c61
\n try(InputStream inputStream = clientSocket.getInputStream();
\n OutputStream outputStream = clientSocket.getOutputStream()) {<\/p>\n\/\/\u56e0\u4e3a\u6211\u4eec\u7528\u5b57\u7b26\u4e32\u6765\u505a\u4e3a\u6570\u636e\u4f20\u8f93，\u7528Scanner\u5c31\u53ef\u4ee5\u66f4\u65b9\u4fbf\u7684\u4f20\u8f93\u4e86
\n Scanner scanner = new Scanner(inputStream);
\n \/\/\u5305\u88c5\u8f93\u51fa\u6d41，\u4e3b\u8981\u662f\u7528println()\u4f1a\u5728\u6570\u636e\u4e4b\u540e\u52a0\u4e0a\\\\n
\n PrintWriter printWriter = new PrintWriter(outputStream);<\/p>\nwhile (true) {
\n \/\/1.\u83b7\u53d6\u8bf7\u6c42
\n if (!scanner.hasNext()) {
\n \/\/\u5982\u679cscanner\u65e0\u6cd5\u8bfb\u53d6\u51fa\u6570\u636e，\u8bf4\u660e\u5ba2\u6237\u7aef\u65ad\u5f00\u4e86\u8fde\u63a5，\u5bfc\u81f4\u670d\u52a1\u5668\u8fd9\u8fb9\u8bfb\u53d6\u5230\u201d\u672b\u5c3e\u201c
\n break;
\n }
\n \/\/2.\u5904\u7406\u8bf7\u6c42
\n \/\/\u63a5\u6536\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42
\n \/\/\u5982\u679c\u9047\u5230 \u7a7a\u767d\u5b57\u7b26 \u5c31\u4f1a\u505c\u6b62\u8f93\u5165
\n String request = scanner.next();
\n \/\/\u5904\u7406\u8bf7\u6c42
\n String response = process(request);
\n \/\/3.\u8fd4\u56de\u54cd\u5e94
\n \/\/\u6b64\u5904\u53ef\u4ee5\u6309\u5b57\u8282\u6570\u7ec4\u7684\u5f62\u5f0f,\u4f46\u662f\u6211\u4eec\u8981\u8f93\u5165\u7684\u662f\u5b57\u7b26\u4e32，\u8fd9\u4e2a\u5c31\u4e0d\u592a\u65b9\u4fbf
\n \/\/outputStream.write(response.getBytes());<\/p>\n\/\/\u6b64\u65b9\u6cd5\u5728\u5199\u5165\u4e4b\u540e\u4f1a\u81ea\u52a8\u52a0\u4e0a\\\\n
\n printWriter.println(response);
\n \/\/\u5237\u65b0\u7f13\u51b2\u533a
\n printWriter.flush();<\/p>\n\/\/4.\u6253\u5370\u65e5\u5fd7
\n System.out.printf("[%s : %d] \u8bf7\u6c42 = %s \u54cd\u5e94 = %s \\\\n",clientSocket.getInetAddress(),clientSocket.getPort(),
\n request,response);
\n }<\/p>\n}catch (IOException e) {
\n throw new RuntimeException();
\n } finally {
\n System.out.printf("[%s : %d]\u5ba2\u6237\u7aef\u4e0b\u7ebf\\\\n",clientSocket.getInetAddress(), clientSocket.getPort());
\n clientSocket.close();
\n }
\n }<\/p>\nprivate String process(String request) {
\n \/\/\u7531\u4e8e\u6211\u4eec\u662f\u56de\u663e\u670d\u52a1\u5668\u8fd9\u91cc\u76f4\u63a5\u8fd4\u56de\u5c31\u53ef\u4ee5\u4e86
\n return request;
\n }<\/p>\npublic static void main(String[] args) throws IOException {
\n TcpEchoServer server = new TcpEchoServer(8080);
\n server.start();
\n }
\n}<\/p>\n\u5ba2\u6237\u7aef\u6e90\u7801：<\/p>\n
import java.io.IOException;
\nimport java.io.InputStream;
\nimport java.io.OutputStream;
\nimport java.io.PrintWriter;
\nimport java.net.Socket;
\nimport java.util.Scanner;<\/p>\npublic class TcpEchoClient {<\/p>\n
private Socket socket = null;<\/p>\n
public TcpEchoClient(String serverIP, int serverPort) throws IOException {
\n \/\/\u8fd9\u91cc\u53ea\u8981\u5efa\u7acb\u5b9e\u4f8b，\u5c31\u662f\u548c\u670d\u52a1\u7aef\u7684accept()\u5efa\u7acb\u4e86\u8fde\u63a5
\n \/\/socket\u4e5f\u5c31\u4fdd\u5b58\u4e86\u670d\u52a1\u5668\u7684IP\u548c\u7aef\u53e3\u53f7\u7b49
\n \/\/\u9700\u8981\u4f20\u5165\u670d\u52a1\u5668\u7684 IP\u5730\u5740 \u548c \u7aef\u53e3\u53f7
\n socket = new Socket(serverIP, serverPort);
\n }<\/p>\npublic void start() {
\n System.out.println("\u5ba2\u6237\u7aef\u542f\u52a8!");<\/p>\ntry(OutputStream outputStream = socket.getOutputStream();
\n InputStream inputStream = socket.getInputStream()) {<\/p>\n\/\/\u7528\u6765\u63a5\u6536\u670d\u52a1\u5668\u7684\u4fe1\u606f
\n Scanner scanner = new Scanner(inputStream);
\n \/\/\u7528\u4e8e\u63a5\u6536\u7528\u6237\u8f93\u5165
\n Scanner scannerIn = new Scanner(System.in);
\n \/\/\u7528\u4e8e\u8f93\u51fa\u6570\u636e\u7ed9\u670d\u52a1\u5668
\n PrintWriter printWriter = new PrintWriter(outputStream);<\/p>\nwhile (true) {
\n \/\/1.\u4ece\u63a7\u5236\u53f0\u83b7\u53d6\u6570\u636e
\n System.out.print("->");
\n String request = scannerIn.next();<\/p>\n\/\/2.\u5c06\u6570\u636e\u53d1\u9001\u7ed9\u670d\u52a1\u5668
\n printWriter.println(request);
\n \/\/\u5237\u65b0\u7f13\u51b2\u533a
\n printWriter.flush();<\/p>\n\/\/3.\u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94
\n \/\/\u5224\u65ad\u670d\u52a1\u7aef\u662f\u5426\u8fd8\u6709\u4fe1\u606f
\n if (!scanner.hasNext()) {
\n break;
\n }
\n \/\/\u63a5\u6536\u670d\u52a1\u7aef\u4fe1\u606f
\n String response = scanner.next();
\n \/\/4.\u6253\u5370\u76f8\u5173\u7ed3\u679c<\/p>\nSystem.out.println(response);
\n }<\/p>\n}catch (IOException e) {
\n throw new RuntimeException();
\n }
\n }<\/p>\npublic static void main(String[] args) throws IOException {
\n TcpEchoClient client = new TcpEchoClient("127.0.0.1",8080);
\n client.start();
\n }
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