socket客户端原理详解（传文字或图片）

梦里梦外; 2021-11-11 08:54 208阅读 0赞

//1.创建socket
            Socket s = new Socket("192.168.50.185", 5051);
            System.out.println("已连接到服务器185端口，准备传送图片 ...");
            //2.得到socket读写流
            OutputStream out = s.getOutputStream();
            //===============================================
            // 3**.这一步很关键:不管是图片还是字符串，都需要将图片或者字符串写到流中**
            //3.1构建图片的流
            //  FileInputStream fis = new FileInputStream(pic_path);
            //3.2构建字符串的流
            ByteArrayInputStream tInputStringStream = new ByteArrayInputStream(json_name_feature.getBytes());
            byte[] buf = new byte[1024];
            int len = 0;
            //4.往输出流里面投放数据
            while ((len = tInputStringStream.read(buf)) > 0)
            {
               //4.1 将图片流或者字符串流一点一点读出来
               //4.2 将读出来的流，用socket独有的读写流写入到socket中
                out.write(buf,0,len);
            }
            //通知服务端，数据发送完毕
            s.shutdownOutput();
            //===============================================
    
            //这个流是socket特有的，作用：读出来socket里面的流；上面的作用是：向socket里面写流
            InputStream in = s.getInputStream();
            byte[] bufIn = new byte[1024];
            System.out.println("222");
            StringBuilder SBuf = new StringBuilder();
            // 将socket里面的流一点一点读出来
            while ((len = in.read(bufIn)) != -1)
            {
                System.out.println("aaaaa");
                String sss =  new String(bufIn,0,len);
                SBuf.append(sss);
            }
    
            String state = SBuf.toString();
            //关闭流
            s.close();
            tInputStringStream.close();
            out.flush();
            out.close();