Android network programming only LAN transfer files

Android network programming LAN transfer files:

First, create a socket management class, which is the core class for transferring files, primarily for sending files and receiving files

The specific code is as follows:

1  PackageCom.jiao.filesend;2 3 ImportJava.io.BufferedReader;4 ImportJava.io.BufferedWriter;5 ImportJava.io.FileInputStream;6 ImportJava.io.FileOutputStream;7 ImportJava.io.InputStream;8 ImportJava.io.InputStreamReader;9 ImportJava.io.OutputStream;Ten ImportJava.io.OutputStreamWriter; One ImportJava.net.ServerSocket; A ImportJava.net.Socket; -  - Importandroid.os.Environment; the  - /** - * Socket Management class - * 1. Receiving Documents + * 2. Send file -  * @authorJIAOCG +  * A  */ at  Public classSocketmanager { -     Privateserversocket server; -      PublicSocketmanager (serversocket server) { -          This. Server =server; -     } -     //Receiving Files in      PublicString Receivefile () { -         Try{ to             //Receive file name +Socket name =server.accept (); -             //gets the input stream of the data theInputStream Namestream =Name.getinputstream (); *             //convert a character stream to a byte flow $InputStreamReader StreamReader =NewInputStreamReader (namestream);Panax NotoginsengBufferedReader br =NewBufferedReader (streamReader); -             //Receive file name theString FileName =br.readline (); + br.close (); A streamreader.close (); the namestream.close (); + name.close (); -             //receiving file Data $Socket data =server.accept (); $InputStream DataStream =Data.getinputstream (); -String Savepath = Environment.getexternalstoragedirectory (). GetPath () + "/" +FileName; -FileOutputStream file =NewFileOutputStream (Savepath,false); the             byte[] buffer =New byte[1024]; -             intsize =-1;Wuyi              while(size = datastream.read (buffer))! = 1){ theFile.write (buffer, 0, size); -             } Wu file.close (); - datastream.close (); About data.close (); $             returnFileName + "---receive complete" + "---save to:" +Savepath; -}Catch(Exception e) { - System.out.println (e.tostring ()); -             return"Receive error: \ n" +e.getmessage (); A         } +     } the      -     //Send File $      PublicString SendFile (String fileName, String path, String ipAddress,intPort) { the         Try { the             //Send file name the             //First send file name theSocket name =NewSocket (ipAddress, port); -             //Create an output stream inOutputStream Outputname =Name.getoutputstream (); the             //convert a character stream to a byte flow theOutputStreamWriter Outputwriter =NewOutputStreamWriter (outputname); About             //buffers theBufferedWriter Bwname =NewBufferedWriter (outputwriter); the             //Write to Buffer the Bwname.write (fileName); + bwname.close (); - outputwriter.close (); the outputname.close ();Bayi name.close (); the              the             //Send file Data -Socket data =NewSocket (ipAddress, port); -             //Create an output stream theOutputStream Outputdata =Data.getoutputstream (); the             //get input bytes from a file in the file system theFileInputStream FileInput =NewFileInputStream (path); the             intsize =-1; -             byte[] buffer =New byte[1024]; the              while(size = fileinput.read (buffer, 0, 1024))! =-1){ theOutputdata.write (buffer, 0, size); the             }94 outputdata.close (); the fileinput.close (); the data.close (); the             returnFileName + "Send Complete";98}Catch(Exception e) { About             return"Send error: \ n" +e.getmessage (); -         } 101     }102}

We can use the above file transfer class to implement the file transfer in the LAN

The following code is used:

1 // 1. FileName 2, File path 3, Destination IP 4, destination port 2 String response = Socketmanager.sendfile (fileName, Filepath,ip, POST); 3 message.obtain (handler, 0, Response). Sendtotarget ();

Call the above code can realize the file transfer in the LAN;

Note: The above file transfer belongs to the network transmission, remember in the sub-thread execution Oh, otherwise to error!

Android network programming only LAN transfer files