java与VC通信-socket

最近，要做一个东西，是android客户端要与VC写的服务器端进行数据连接与交换，无奈，先从java测试吧，android还没弄，其实只要是遵循的同一个协议就可以通信了，不管你的客户端和服务器是什么编程语言，什么操作系统，都不重要，重要的是遵循TCP或UDP协议等，先不废话了，上代码再说，

服务器端VC代码如下：

void main(){WORD wVersionRequested;WSADATA wsaData;int err;wVersionRequested = MAKEWORD( 1, 1 );err = WSAStartup( wVersionRequested, &wsaData );if ( err != 0 ) {return;}if ( LOBYTE( wsaData.wVersion ) != 1 ||HIBYTE( wsaData.wVersion ) != 1 ) {WSACleanup( );return; }//一下代码获得IP和计算机名char name[255];char* ip = NULL;PHOSTENT hostInfo;if (gethostname(name,sizeof(name)) == 0){if (hostInfo = gethostbyname(name)){ip = inet_ntoa(*(in_addr*)*(hostInfo->h_addr_list));}}printf("%s--%s\n",ip,name);//获取socketServer对象SOCKET sockSrv = socket(AF_INET,SOCK_STREAM,0);SOCKADDR_IN addrSrv;addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); //设置监听地址addrSrv.sin_family           = AF_INET;           //监听类型addrSrv.sin_port             = htons(6000);       //监听端口bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));listen(sockSrv,10);SOCKADDR_IN addrClient;int len=sizeof(SOCKADDR);while(true){//开始接受数据，等待SOCKET sockConn = accept(sockSrv,(SOCKADDR*)&addrClient,&len);char recvBuf[266] = {0};recv(sockConn,recvBuf,266,0);std::cout << recvBuf << std::endl;}//关闭套接字closesocket(sockSrv);WSACleanup();}

当然还要加入WS2_32.LIB文件。

客户端代码如下：

import java.io.IOException;import java.io.PrintWriter;import java.io.UnsupportedEncodingException;import java.net.Socket;import java.net.SocketException;import java.net.UnknownHostException;public class ClientSocket extends Socket{Socket socket;/** * 构造 */public ClientSocket(String ip , int port){try {socket = new Socket(ip, port);System.out.println("连接建立成功: site:"+ ip +" port:"+port);} catch (UnknownHostException e) {System.out.println("失败");e.printStackTrace();} catch (IOException e) {System.out.println("失败");e.printStackTrace();}}public String send(String msg){try {System.out.println("发送的内容：" + msg);PrintWriter out = new PrintWriter(socket.getOutputStream());out.print(msg);out.flush();return null;} catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return null;}public void close(){try {socket.close();} catch (IOException e) {e.printStackTrace();}}public static void main(String[] args) throws SocketException {ClientSocket socket = new ClientSocket("127.0.0.1", 6000);socket.send("zhouxuguang");socket.close();System.out.println(socket.getReceiveBufferSize());System.out.println(socket.getSendBufferSize());}}

测试结果如下：

客户端：

连接建立成功: site:127.0.0.1 port:6000
发送的内容：zhouxuguang
8192
8192

服务器端：

当然，这只是简单的字符串数据传输，复杂的消息结构体的传输还有待进一步研究。下一步要研究android上怎么与VC通信。

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