Java Video Downloads

 /** * Download files to local * * * @param urlstring * downloaded file address * @param filename * Local filename * @param Timeout * Timeout time milliseconds * @throws Exception * Various exceptions/public static Boole
        An download (string urlstring, String Filename,int timeout) {Boolean ret = false;
        File File = new file (filename);
            try {if (file.exists ()) {ret = true;
                }else{//constructed URL url url = new URL (urlstring);
                Open connection HttpURLConnection con = (httpurlconnection) url.openconnection ();
                Con.setconnecttimeout (timeout);
                Con.setreadtimeout (timeout);
                Con.connect ();
                int contentlength = Con.getcontentlength ();
                Input stream InputStream is = Con.getinputstream ();
                1K data buffering byte[] bs = new byte[1024]; Data read fromlength int len;
                The file stream of the output files File2=new file (File.getparent ());
                File2.mkdirs ();
                if (File.isdirectory ()) {}else{file.createnewfile ();//Create File}
                OutputStream OS = new FileOutputStream (file);
                Start reading while (len = Is.read (BS))!=-1) {os.write (BS, 0, Len);
                //finished, close all links os.close ();
                Is.close ();
                    if (ContentLength!= file.length ()) {file.delete ();
                ret = false;
                }else{ret = true;
            A catch (IOException e) {file.delete ());
            ret = false;  Logger.error ("[videoutil:download]:\n" + "video URL:" + urlstring + "\ n NEW FILENAME:" + filename + "Download failed!!
        "); }finally {return ret;
    /** * Breakpoint continued * @param urlstring * @param filename * @param timeout * @return * * public static Boolean Resumedownload (String urlstring, String Filename,int timeout) throws exception{Boolean R
        ET = false;
        File filefinal = new file (filename);
        String tmpfilename = filename+ ". tmp";

        File File = new file (tmpfilename);
            try {if (filefinal.exists ()) {ret = true;
                }else{long Contentstart = 0;

                File File2=new file (File.getparent ());
                if (file.exists ()) {Contentstart = File.length ();
                }else{File2.mkdirs ();
                }//construct URL url url = new URL (urlstring);
                Open connection HttpURLConnection con = (httpurlconnection) url.openconnection (); Con.setconnecttimeout (TimEout);
                Con.setreadtimeout (timeout); Sets the dot if (contentstart>0) {con.setrequestproperty ("RANGE", "bytes= +contentstart+")
                -");
                } con.connect ();
                int contentlength = Con.getcontentlength ();
                Input stream InputStream is = Con.getinputstream ();
                100Kb data buffering byte[] bs = new byte[100*1024];
                The length of data read int len;
                Randomaccessfile osavedfile = new Randomaccessfile (tmpfilename, "RW");
                Osavedfile.seek (Contentstart);
                Start reading while (len = Is.read (BS))!=-1) {osavedfile.write (BS, 0, Len);
                //finished, close all links osavedfile.close ();
                Is.close ();
                File.renameto (filefinal);
            ret = true; } catch (IOException e) {
            File.delete ();
            ret = false;  Logger.error ("[videoutil:download]:\n" + "video URL:" + urlstring + "\ n NEW FILENAME:" + filename + "Download failed!!
            ");
        throw new Exception (e);
        }finally {return ret; }
    }