JavaTCP上传图片代码实例

1.客户端代码

public class uploadpicclient {
 public static void main(string[] args) throws unknownhostexception, ioexception {
 // todo auto-generated method stub
 //1,创建客户端socket
 socket s = new socket("localhost",10088);
 //2,读取客户端要上传的图片文件
 fileinputstream fis = new fileinputstream("d:\\workspace\\day2019.1.17\\lanjing.jpg");
 //3,获取socket输出流，将读到的图片的数据发送到服务端
 outputstream out = s.getoutputstream();
 byte[] buf = new byte[1021];
 int len =0;
 while((len=fis.read(buf))!=-1){
  out.write(buf,0,len);
 }
 //告诉服务端说：这边的数据发送完毕让服务端停止读取
 s.shutdownoutput();
 //读取服务端发回的内容
 inputstream in = s.getinputstream();
 byte[] bufin = new byte[1024];
 int lenin = in.read(buf);
 string text = new string (buf,0,lenin);
 system.out.println(text);
 //关闭资源
 fis.close();
 s.close();
 }
}

2.服务端代码

public class uploadpicsever {
public static void main(string[] args) throws ioexception {
 // todo auto-generated method stub
 //创建tcp的socket服务端
 serversocket ss = new serversocket(10088);
 //获取客户端
 socket s = ss.accept();
 string ip = s.getinetaddress().gethostaddress();
 system.out.println(ip+".....connected");
 //读取客户端发来的数据
 inputstream in = s.getinputstream();
 //将读取到的数据存储到一个文件中。
 file dir = new file("d:\\workspace\\day2019.1.17");
 if(!dir.exists()){
 dir.mkdirs();
 }
 file file = new file(dir,"blue.jpg");
 fileoutputstream fos = new fileoutputstream(file);
 byte[] buf = new byte[1024];
 int len = 0;
 while ((len=in.read(buf))!=-1){
 fos.write(buf,0,len);
 }
 //获取socket输出流，将上传成功字样发送给客户端
 outputstream out = s.getoutputstream();
 out.write("上传成功".getbytes());
 fos.close();
 s.close();
 ss.close();
}

上传后和上传前的图片：

总结

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