socket文件传输

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今天来写一下socket文件传输.
之前公司项目用到了局域网内的通信,前一篇文章讲了一下upd的广播,这一篇准备简单的说说socket通信问题.
socket通信需要两个条件:ip与port.
首先需要知道主机的ip,然后知道主机的port,才能够进行通信.
好了,不多说了(关键是了解的太少)直接上代码:

服务端

    ServerSocket ss;    Socket s = null;    ss = new ServerSocket(port);    s = ss.accept();

定义一个服务器对象ss,定义一个套接字s.创建一个服务器new ServerSocket.通过阻塞方法accept等待客户端的接入.

客户端

Socket socket = null;socket = new Socket(ip, port);

定义一个套接字socket,接入到服务器new Socket.

服务端与客户端的整体结构大概就是这样.
接下来上具体代码.

服务端:

    ServerSocket ss;    Socket s = null;    DataInputStream fis;    DataOutputStream ps;    private void sendFile(File fi) {        try {            ss = new ServerSocket(Params.sendAndAccept_Port);            while (true) {                // 选择进行传输的文件                if (!fi.exists()) {                    break;                }                System.out.println("文件长度:" + (int) fi.length());                s = ss.accept();                System.out.println("建立socket链接");            try {                // 先将文件变成input流,再转成output流发送出去                fis = new DataInputStream(new BufferedInputStream(new FileInputStream(fi)));                ps = new DataOutputStream(s.getOutputStream());                ps.writeUTF(fi.getName());                ps.flush();                ps.writeLong((long) fi.length());                ps.flush();                int bufferSize = 1024;                byte[] buf = new byte[bufferSize];=                int read = 0;                while ((read = fis.read(buf)) > -1) {                    ps.write(buf, 0, read);                }                ps.flush();                // 注意关闭socket链接哦，不然客户端会等待server的数据过来，直到socket超时，导致数据不完整。                fis.close();                s.close();                System.out.println("文件传输完成");            } catch (IOException e) {                e.printStackTrace();            }            }        } catch (Exception e) {            e.printStackTrace();        }    }

客户端:

Soket s=null;InputStream is;DataOutputStream out = null;DataInputStream in= null;private void receive(){    try {            s = new Socket(ip, port);            in=new DataInputStream(new BufferedInputStream(s.getInputStream()));            String savePath = Environment.getExternalStorageDirectory().toString()+"/";            int bufferSize = 1024;            byte[] buf = new byte[bufferSize];            long len=0;            savePath += inputStream.readUTF();            out = new DataOutputStream(new BufferedOutputStream(new BufferedOutputStream(new FileOutputStream(savePath))));            len = inputStream.readLong();            System.out.println("文件的长度为:" + len + "\n");            System.out.println("开始接收文件!" + "\n");            int read = 0;            while ((read = inputStream.read(buf))>-1) {                out.write(buf, 0, read);            }            System.out.println("接收完成，文件存为" + savePath + "\n");            Message msg=new Message();            msg.what=1;            handler.sendMessage(msg);            out.close();        } catch (Exception e) {            System.out.println("接收消息错误" + "\n");            return;        }        } catch (Exception e) {            e.printStackTrace();        }} Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            if (msg.what==1) {                ToastUtil.Show.toast.show(Client1Activity.this, "接收完成", Toast.LENGTH_LONG);            }        }       };

好了,差不多就这么多了.
这次没有源码,直接复制上边的就可以用了.
最后,结束的时候记得调用close.

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