Transmision de Archivos con Sockets en Java
programacion transferencia sockets javaAlgunos siempre tuvimos problemas en la transferencia de archivos, especialmente en Java, que a pesar de ser muy completo, a veces ese es su principal incoveniente (qué clase o componente usar). Aca les dejo un pequeño ejemplo que realmente funciona, con archivos de gran tamaño y usando Socket's en Java. El cliente envia el archivo al servidor.
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| /** | |
| * | |
| * @author Miguel Peinado | |
| * @author Timoteo Ponce | |
| */ | |
| import java.net.*; | |
| import java.io.*; | |
| class Cliente{ | |
| public static void main (String[] args){ | |
| DataInputStream input; | |
| BufferedInputStream bis; | |
| BufferedOutputStream bos; | |
| int in; | |
| byte[] byteArray; | |
| final String filename = "/opt/jdk-1.6.bin"; | |
| try{ | |
| final File localFile = new File( filename ); | |
| Socket client = new Socket("10.23.3.20", 1234); | |
| bis = new BufferedInputStream(new FileInputStream(localFile)); | |
| bos = new BufferedOutputStream(client.getOutputStream()); | |
| //enviamos el nombre del archivo | |
| DataOutputStream dos=new DataOutputStream(client.getOutputStream()); | |
| dos.writeUTF(localFile.getName()); | |
| byteArray = new byte[8192]; | |
| while ((in = bis.read(byteArray)) != -1){ | |
| bos.write(byteArray,0,in); | |
| } | |
| bis.close(); | |
| bos.close(); | |
| }catch ( Exception e ) { | |
| System.err.println(e); | |
| } | |
| } | |
| } | |
| //y en la parte del Servidor: | |
| /** | |
| * | |
| * @author Miguel Peinado | |
| */ | |
| import java.net.*; | |
| import java.io.*; | |
| class Servidor{ | |
| public static void main (String[] args){ | |
| ServerSocket server; | |
| Socket connection; | |
| DataOutputStream output; | |
| BufferedInputStream bis; | |
| BufferedOutputStream bos; | |
| byte[] receivedData; | |
| int in; | |
| String file; | |
| try{ | |
| server = new ServerSocket( 1234 ); | |
| while ( true ) { | |
| connection = server.accept(); | |
| receivedData = new byte[1024]; | |
| bis = new BufferedInputStream(connection.getInputStream()); | |
| DataInputStream dis=new DataInputStream(connection.getInputStream()); | |
| //recibimos el nombre del fichero | |
| file = dis.readUTF(); | |
| file = file.substring(file.indexOf('/')+1,file.length()); | |
| bos = new BufferedOutputStream(new FileOutputStream(file)); | |
| while ((in = bis.read(receivedData)) != -1){ | |
| bos.write(receivedData,0,in); | |
| } | |
| bos.close(); | |
| dis.close(); | |
| } | |
| }catch (Exception e ) { | |
| System.err.println(e); | |
| } | |
| } | |
| } |