Android—基于Socket与上传图片到客户端

      最近项目中需要客户端和Socket互相传递数据时候需要相互传递图片所以做下总结以免以后忘记,也希望给大家带来帮助。

      先上客户端的代码:

      根据图片名称上传照相机中单个照片(此方法为自己封装)

      参数所代表的是照片的路径。

 private void upload(String path) {  
         int length = 0;
         byte[] sendBytes = null;
         Socket socket = null;
         DataOutputStream dos = null;
         FileInputStream fis = null;

         try {
             try {
                 socket = new Socket(ip,duankou);
                 dos = new DataOutputStream(socket.getOutputStream());
                 File file = new File(filename);
                 fis = new FileInputStream(file);
                 sendBytes = new byte[1024];
                 while ((length = fis.read(sendBytes, 0, sendBytes.length)) > 0) {
                     dos.write(sendBytes, 0, length);
                     dos.flush();
                 }
             } finally {
                 if (dos != null)
                     dos.close();
                 if (fis != null)
                     fis.close();
                 if (socket != null)
                     socket.close();
             }
         } catch (Exception e) {
             e.printStackTrace();
         }
    }  

注:在android Activity调用此方法的时候一定要开一个子线程去调用(网络访问在主线程中是android中一个标志性的错误!!!!)

     接下来是服务端的代码,测试使用新建一个java类即可

public class Receiver implements Runnable {
    public static void main(String[] args) {
        try {
            final ServerSocket server = new ServerSocket(3333);
            Thread th = new Thread(new Runnable() {
                public void run() {
                    while (true) {
                        try {
                            System.out.println("开始监听...");
                            Socket socket = server.accept();
                            System.out.println("有链接");
                            receiveFile(socket);
                        } catch (Exception e) {
                        }
                    }
                }
            });

            th.run(); // 启动线程运行
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void run() {
    }

    public static void receiveFile(Socket socket) {
        byte[] inputByte = null;
        int length = 0;
        DataInputStream dis = null;
        FileOutputStream fos = null;
        try {
            try {
                dis = new DataInputStream(socket.getInputStream());
                fos = new FileOutputStream(new File("./cc.jpg"));
                inputByte = new byte[1024];
                System.out.println("开始接收数据...");
                while ((length = dis.read(inputByte, 0, inputByte.length)) > 0) {
                    System.out.println(length);
                    fos.write(inputByte, 0, length);
                    fos.flush();
                }
                System.out.println("完成接收");
            } finally {
                if (fos != null)
                    fos.close();
                if (dis != null)
                    dis.close();
                if (socket != null)
                    socket.close();
            }
        } catch (Exception e) {
        }
    }
}

  最后可以在java项目的根目录下看有没有成功了。

原文地址:https://www.cnblogs.com/yunfang/p/5277412.html