初次接触SOCKET

 server代码:

import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;public class Server {private static Socket mSocket=null;Server(String[] source,int port) {try {//创建服务器端socket套接字ServerSocket mServerSocket=new ServerSocket(port);//准备传输的数据for(int i=0;i<source.length;i++){//侦听客户端连接状态mSocket=mServerSocket.accept();readyData(source[i]);//所有文件传输结束时关闭server端套接字if(i==source.length-1){ //文件传输完毕关闭此套接字 mSocket.close(); mServerSocket.close();break;}}} catch (IOException e) {System.out.println(e.getMessage());}}static void readyData(String source){DataInputStream is=null;DataInputStream sis=null;DataOutputStream os=null;File mfile=null;//读取文件try {source=source.replace('//','/');source=source.endsWith("/")?source:source.concat("/");mfile=new File(source);is=new DataInputStream(new BufferedInputStream(new FileInputStream(mfile)));} catch (FileNotFoundException e) {System.out.println(e.getMessage());}try {//读取客户端返回信息sis=new DataInputStream(new BufferedInputStream(mSocket.getInputStream()));System.out.println("the client os information:"+sis.readUTF());//为客户端提供数据源os=new DataOutputStream(new BufferedOutputStream(mSocket.getOutputStream()));//写入文件名,文件大小信息os.writeUTF(mfile.getName());os.flush();//写入文件数据int tmp = 0;while ((tmp = is.read()) != -1) {os.write(tmp);}is.close();os.flush();os.close();} catch (IOException e) {System.out.println(e.getMessage());}}public static void main(String[] args) {String[] data=new String[2];data[0]="C:/Program Files/Internet Explorer/hmmapi.dll";data[1]="C:/Program Files/Internet Explorer/iexplore.exe";new Server(data,9999);}}

以下是client代码:

import java.io.BufferedInputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.net.Socket;import java.net.UnknownHostException;public class Client {private static Socket mSocket=null;private static DataInputStream is=null;private static DataOutputStream os=null;private static String osName = System.getProperty("os.name"); //操作系统名称 private static String osArch = System.getProperty("os.arch"); //操作系统构架 private static String osVersion = System.getProperty("os.version"); //操作系统版本 public Client(String host,int port,String savepath){savepath=savepath.replace('//','/');savepath=savepath.endsWith("/")?savepath:savepath.concat("/");while(true){if(accesServer(host,port)){sendMessage();getMessage(savepath);}}}//连接socketstatic boolean accesServer(String host,int port){try {mSocket = new Socket(host, port);} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {if(mSocket!=null){try {mSocket.close();} catch (IOException e1) {e1.printStackTrace();}}return false;}return true;}//发送消息static void sendMessage() {try {os=new DataOutputStream(mSocket.getOutputStream());os.writeUTF(osName+" "+osArch+" "+osVersion);os.flush();return;} catch (IOException e) {System.out.println("error发送消息:"+e.getMessage());if(os!=null){try {os.close();} catch (IOException e1) {System.out.println("error发送消息:"+e1.getMessage());}}}}//接收数据static void getMessage(String savepath){try {is=new DataInputStream(new BufferedInputStream(new BufferedInputStream(mSocket.getInputStream())));savepath+=is.readUTF();System.out.println(savepath);FileOutputStream fos=new FileOutputStream(new File(savepath));int tmp=0;while((tmp=is.read())!=-1){fos.write(tmp);}fos.flush();fos.close();return;} catch (IOException e) {System.out.println("接收数据"+e.getMessage());if(is!=null){try {is.close();} catch (IOException e1) {System.out.println(e1.getMessage());}}}}//关闭连接static void shutdown(){try {mSocket.close();os.close();is.close();} catch (IOException e) {System.out.println("error关闭连接:"+ e.getMessage());return;}}public static void main(String[] args) {new Client("192.168.0.10",9999,"e:/downfile/");}}

 

代码不多,都是一些对流的操作,写入写出.需要注意的向socket写入数据的时候,socket流不能关闭,否则另一端会在接收的时候说流已经关闭,没有数据,等等.当时我是在改代码的过程中,顺手一下把流关闭了.....

 

代码完成了,还需要在客户端进行发布,下篇我将介绍一下发布的过程.