download 1 « Operation « Java I/O Q&A





1. Corrupt file when using Java to download file    stackoverflow.com

This problem seems to happen inconsistently. We are using a java applet to download a file from our site, which we store temporarily on the client's machine. Here is the ...

2. Java http download corrupts file    stackoverflow.com

I have a problem, which I do not seem to be able to solve... I do a http download of a file, but the CRC32 of the file on the server and ...

3. How to download a file over HTTP and store its content in a String in Java    stackoverflow.com

I'm trying to download a file over HTTP and store its contents in a String, as the title says. My approach is thus:

URL u = new URL("http://url/file.txt");

ByteArrayBuffer baf = new ByteArrayBuffer(32);
InputStream ...

4. (Selenium) How to test whether a download of a certain file was started?    stackoverflow.com

I want to test whether a certain action results in a file download (a) at all, and (b) with the file having a certain name. Is there any way to use Selenium ...

5. Is a Download class a bad candidate for immutability?    stackoverflow.com

I have a class that i use to do downloads. The class is observable and i use it as a swing UI model object too. However it is too slow, both ...

6. Download a non html file with HtmlUnit    stackoverflow.com

I'm writing a JUnit test that involves the downloading of a file from the web app. How do I do that with HtmlUnit?

7. Java code for downloading files    stackoverflow.com

(original title: help a newbie (Java)) I need a java code for downloading files from the internet ..For example I want to download doc,pdf files from the internet means i have to ...

8. Java multiple connections downloading file    stackoverflow.com

I was wanting to add multiple connections in the code below to be able to download files faster. Could someone help me? Thanks in advance.

public void run() {
    ...

9. Download Large Files using java    stackoverflow.com

I am building an application in which I want to download large files on handset (mobile), but if size of file is large I am getting exception socket exception-broken pipe.

 resp.setHeader("Content-length", ...





10. Download a File using MIDP 1.0    stackoverflow.com

I have a J2ME app using midp 1.0 and i want to download a file much like I would using midp 2.0 platformRequest(). What do i do? Michael

11. Java downloading files sometimes result in CRC    stackoverflow.com

I've written code to automatically download a batch of files using an InputStream and a FileOutputStream. The code is very straightforward:

is = urlConn.getInputStream();
fos = new FileOutputStream(outputFile);

eventBus.fireEvent(this, new DownloadStartedEvent(item));

int read;
byte[] buffer = new ...

12. How can I let me users download a file from my jDeveloper 10g website?    stackoverflow.com

I want to easily allow my users to fetch a PDF file located on my hard disk. How could I "push" the file to them so the download/open file prompt opens for ...

13. Downloading from rapidshare as premium user?    stackoverflow.com

I'm creating a simple download manager in java and I want to be able to download files from rapidshare as a premium user. I checked their API, but that didn't make ...

14. Download file in base64 efficiently    stackoverflow.com

I have to download an arbitrarily large file in base64 in a device with limited RAM memory in Java. How do I download a file in base64 efficiently? Is it possible to ...

15. Automate file download    stackoverflow.com

I want to automate file download using java. How to do that? Is it possible to give file location directly. Because it is not accepting back slash.?

16. Files downloading    stackoverflow.com

How do I go about connecting to a server and check if there is a file to be downloaded using Java ME? Should I use POST method, post all my required ...





17. HtmlUnit onclick execution download file    stackoverflow.com

So here's the deal:
I am accessing some webpage(using HtmlUnit) on which there's a button. I programatically click that button(big thanks to Mads Hansen)

List l = page.getByXPath( "//input[@type='submit' and @value='Save as XML']" ...

18. Is this the best way to download a file in java?    stackoverflow.com

public void download(String url, String destination) {
        BufferedOutputStream localBufferedOutputStream = null;
        URLConnection localURLConnection = null;
   ...

19. how to download a file in java?    stackoverflow.com

I've tried a few byte while loop methods and this method below:

try {
             URL dl = null;
  ...

20. Download file using java apache commons?    stackoverflow.com

How can I use the library to download a file and print out bytes saved? I tried using

import static org.apache.commons.io.FileUtils.copyURLToFile;
public static void Download() {

       ...

21. download remote machine files using java    stackoverflow.com

I would like to download somefiles which is in remote shared folder from the local system using java code. Can you please guide us, how i can proceed this. Whether i ...

22. Download file size - JavaME    stackoverflow.com

I am trying to download a file from http server using httpconnection. Can I get the size of the file before I download. If so, how do i do that? ...

23. Java - directly reading a file without downloading and storing locally    stackoverflow.com

I want to directly read a file, put it into a string without storing the file locally. I used to do this with an old project, but I don't have the ...

24. downloading to a file in Java - very slow    stackoverflow.com

Given the following example code:

somefile = new URL("http://somefile.rar");
ReadableByteChannel rbc = Channels.newChannel(somefile.openStream());
FileOutputStream fos = new FileOutputStream("test");
long start = System.currentTimeMillis();
fos.getChannel().transferFrom(rbc, 0, 1 << 24);
long end = System.currentTimeMillis();
System.out.println(end-start);
The file in question is 14MB. ...

25. Best way to design Java file download manager    stackoverflow.com

I would like to write simple Java downloader for my backup website. What is important, applet should be able to download many files at once. So, here is my problem. Such applet ...

26. Not able to click the button on File Download with JWinAuto    stackoverflow.com

I am new to JWinAuto and AutoIT. I want to click the save button on the File Download control. I am able to get the focus on the button but it doesn't click ...

27. Clicking button on File Download window    stackoverflow.com

During automated testing using Selenium-2 we are clicking on the link and which opens the "File Download" window. And I want to click on "save" button and save the file to ...

28. How to download a file as a browser    stackoverflow.com

If I save an mp3 file via a browser, the third-party library is normally working with him, if I shake myself through HTTP, then the third-party library with him unable to ...

29. Why speed of downloading files using Java is so low    stackoverflow.com

I wrote simple Java Downloader and I have some problems with speed. At first, speed is OK - just like when I use my browser to download this file. But after a ...

30. how can I download a file using Java?    stackoverflow.com

Possible Duplicate:
How do you Programmatically Download a Webpage in Java
How to download a file using java. So for example, I want to construct a ...

31. Download single file with multiple connection in java?    stackoverflow.com

I'm doing a project on java download manager.i want to download a single file(which is in some website) with multiple connections(just like download Managers do,example-IDM).Is this possible in java ?.if yes ...

32. Write program to download .gz file in java?    stackoverflow.com

I've been trying to write a program in java that can download a number of .gz files from an ftp server online for me. Here's what I've been using:

public static void ...

33. Measuring Download Speed Java    stackoverflow.com

I'm working on downloading a file on a software, this is what i got, it sucesfully download, and also i can get progress, but still 1 thing left that I dont ...

34. Download a file from fall back location    stackoverflow.com

We are generating links to CSS and JavaScript files from our JSP Page. These CSS and JS files are organized in Locale specific folders. Now we need to download the file ...

35. Can mozswing download file    stackoverflow.com

I'm trying to distribute a Java Browser build upon MozSwing. When I click on a download link in the HTML page I'm surfing, application freezes. Do you have any hint?

36. Resumable File Download Protocol    stackoverflow.com

I am going to write an application server(RESTFull API) to allow clients to download a zip file, but requirement is the download must be resume-able (due to failure / Network disconnection). Is ...

37. how to download large files without memory issues in java    stackoverflow.com

When I am trying to download a large file which is of 260MB from server, I get this error: java.lang.OutOfMemoryError: Java heap space. I am sure my heap size is less ...

38. Java file download code design problem    stackoverflow.com

I have a Java project which is used as a component in a webapp. This java code writes an xls file in a specific folder. I want to provide a download ...

39. I made a simple Download Manager in Java, my Download Manager is able to download is unable to download large files from the net    stackoverflow.com

I am not able to download large files from the net ( more than 1 mb file ). However, my program is able to download those large files from the localhost. ...

40. HtmlUnit can't retrieve page after downloading a file    stackoverflow.com

I'm having this weird problem with HtmlUnit in Java. I am using it to download some data from a website, the process is something like this: 1 - Login 2 - For each ...

41. In Java : Download file and store in Buffer and pass to requested User    stackoverflow.com

I am working in Project where I download content from another site and pass that content to my Downloading user. I am using Java IO. Its like pipe . I want ...

42. how to download all files from stfp location    bytes.com

that's fine . could you provide any ref site here . i couldn't get any related thing in Google. if poss please provide .

43. Automized download from the actual jar-file?    coderanch.com

Hi, we got a big problem in our company. All developers sittint in front of the same project and writing and updating some classes. The problem is, that on every little PC another api is used. And so, some things work on one machine but not on the other and you search hours for finding the problem that it was just ...

44. How to download a File From Sun?    coderanch.com

45. urgent problem with webobjects downloading files    coderanch.com

Hi All During working with the Oracle bank our research team came up with questions . Please send me any information or procedure steps regarding these topics so that I could have a more effective use of Oracle8i 1. The bank I am using is the Oracle 8i bank with an interface of Web object 4,5. All of the bank data ...

46. Download files in chunk sizes    coderanch.com

Hi, I want to write a program where I have to download the files of any type in chunk sizes. For example: If the size of file is 2 MB & the server does not allow to download it completely in one request, then I have to download it in suppose 5KB sizes. Can you please tell me how can I ...

47. File Download    coderanch.com

48. Corejava package download    coderanch.com

Jason I had downloaded "Sun(TM) ONE Studio 4 update 1, Community Edition - J2SE(TM) 1.4.1_02 Cobundle". It comes with the IDE and J2SE. I am programming using the IDE. But when I wrote a "import corejava.*" in my program, the compiler could not identify the package. It gave an error. Should I make some changes in the classpath, so that the ...

49. How to download files from pc to pc    coderanch.com

50. File Download problem with word/excel ?? only    coderanch.com

hello i have written the code , fairly as below for file download String filename = "C:\\a.xls"; response.setContentType("application/octet-stream"); response.setHeader("Content-Disposition", "attachment;filename="+filename); ServletOutputStream out1 = response.getOutputStream(); File fileToDownload = new File(filename); FileInputStream fileInputStream = new FileInputStream(fileToDownload); int i; while ((i=fileInputStream.read())!=-1) { out1.write(i); } fileInputStream.close(); out1.flush(); out1.close(); }catch(Exception e) // file IO errors { e.printStackTrace(); } a.xls contains japanese characters .i am unable to ...

51. How to Login to a machine and download files?    coderanch.com

Hello all, I have a set of images on a machine (windows machine) on my Intranet. Let me refer this machine as 'A'. I have an application Hosted on Tomcat on another Machine (windows machine). Let me refer this machine as 'B'. Now i have the Java code to retrieve the images from A to B. But as a pre-requisite i ...

52. Download file on client machine at particular location    coderanch.com

hi all, I am developing pages for Clarfy 12.5 CRM web application. We are using Weblogic app server 8.1. One of my requirements is, on click of hyperlink, a file is to be created dynamically and downloaded at a particular location on the client's machine. In case the file is already present, it has to be over written. is there any ...

53. Download multiple files    coderanch.com

Hi, I am trying to provide a feature to users to download multiple files from our web server. For example: A user can select mulitple checkboxes from a list of URLs in a page and by clicking a button, he should be able to save all the selected files (pointed by the URLs) to a directory of his choice on his ...

54. File Download issue...    coderanch.com

55. Download a file from java    coderanch.com

Hi I gave the following in my jsp page Click Here When I click the link "Click Here" the file log.txt is opened in the IE browser itself... But i want it to show the download dialog box with the open save buttons [which we can see while we download attachments in yahoo] In java do we have ...

58. Download file to a users PC    coderanch.com

I've written a servlet which creates either a comma delimited file whose suffix is .csv, or a XML format file which ends with .xml. I create these using a FileWriter/BufferedWriter/PrintWriter combo and output to a directory under webapps\bax (using Tomcat). In my JSP program I have some HTML (

59. Downloading file    coderanch.com

If you forward to a URL using a request dispatcher, the target of the forward needs to be something that handles requests, like a servlet or JSP. It is not the file you want to download. To download a file, you can read the file and write its contents to the servlet output stream, as long as you do the following: ...

60. Multiple file download    coderanch.com

I need to know if there is any way that we can do a multiple file download using servlets, NOT using Client pull (cause we cannot use Javascript), and save the files as separate files and not as a single file, and all this in one single connection.. the user should not have to keep chosing the file which he wishes ...

61. Downloading Files    coderanch.com

62. regarding file downloading    coderanch.com

Ya i tried with that also. But it promts to Save as/ Open it from current location in IE, not in Netscape. My requirement is, user should not be prompted , instead open in the browser directly.when the user click the download , i am opening a small pop-up window and in that the image should be displayed.. please clarify with ...

63. Downloading file    coderanch.com

64. Access denied after file downloading    coderanch.com

Hi, I'm currently working on file uploading and downloading from client site to the server's site. One problem that I'm facing currently is after I downloaded files from the jsp, I received an "Error on page" error. When I double click on the exclaimation icon at the bottom left corner, the message details says that "Access is denied". I managed to ...

65. downloading a file. how can i set the file name?    coderanch.com

I have a .zip file stored in my database in a BLOB field and I want my web site user to download this file when he/she clicks on a web page button. Here is what I do in my servlet: response.setContentType("application/octet-stream"); byte[] b = /*get the BLOB field from my database*/ OutputStream out = response.getOutputStream(); out.write(b); out.flush(); out.close(); When the user ...

66. File download issue!!!    coderanch.com

Hi Everybody, We have been having some problem with file download. When we try to download pdf document using IE browser and choose to "Open from Current Location", it prompt again the same dialog. If we choose to "Open from Current Location" again, it prompts again with the same dialog. Now if we choose "Open from Current Location", it opening in ...

67. File Download - any way to prevent "Open from current location"    coderanch.com

Hi, I have a servlet that works fine for downloading excel files. However, while download, I get the usual DialogBox which asks me to choose between "Save to Disk" or "Open from current location". Is there a way by which I can force my user to only be able to "Save to Disk" and not able to open from current location. ...

69. Regarding File Download!!    coderanch.com

Hello Folks, Iam getting the following exception while redirecting a page after the completion of file download... "IllegalStateException or Response already commited" My servlet code for file download is as follows: import java.io.*; import java.util.zip.GZIPOutputStream; import javax.servlet.*; import javax.servlet.http.*; public class DownloadServlet extends HttpServlet { public DownloadServlet() { separator = "/"; root = "."; } private String decode(String s) { StringBuffer ...

70. Downloading files    coderanch.com

Hi ! I have a servlet and here is what it does: -Dynamically builds a J2ME application using Ant. -Copies some files of the application to /webapps/dload/apps Next these files have to be downloaded. I want that download should start automatically. To achieve this functionality I am using response.sendRedirect(URL)method. But download does not start. I am geting the following error on ...

71. downloading a file    coderanch.com

my question is this: is it possible to download a file from the application server to the client THROUGH JAVA CODE and then cancel the copy of the downloaded file on the server? My application calls a PL/SQL stored procedure which create a file on the server and I need to have it on my client. Thanks

73. Download files Transparently    coderanch.com

74. Download file    coderanch.com

75. file download is not working    coderanch.com

I am having a file in the server which is to be downloaded. for that one link with the file name is provided. on cliking the link the following code is called. ServletOutputStream sos=null; response.setHeader("Content-Disposition","attachment; filename="+st/*.substring(temp+1)*/); response.setContentType("application/download"); FileInputStream bufReader = new FileInputStream(request.getRealPath(st)); int line=bufReader.read(); sos = response.getOutputStream(); sos.flush(); while(line!=-1){ sos.write(line); line=bufReader.read(); } bufReader.close(); sos.flush(); the problem is 1. when the save ...

76. File Download    coderanch.com

77. Downloading file    coderanch.com

hi, I am developing a servlet, which will send user a file and also a successful page by clicking on a single button on a page. I have no problem with sending user a file...... but i don't know why I could never send the successful page across, there is no error and it seems the browser just ignore the successful ...

78. Downloading a File and Doing Something Else    coderanch.com

My servlet gets a request, and I respond by sending a file. That works okay, but after I get done pushing the file, I'd really like to go somewhere else. But I guess I'd need two requests... one to request the download, and another request to go somewhere else. So what's the 'right' way to do that? Would you do two ...

79. File download    coderanch.com

80. unexplained file download behavior    coderanch.com

Hello. I am working on a site that allows the user to download information to an Excel file. If I use the following code: .AppendHeader("content-disposition", "inline; filename=" & FileName) The Excel file displays in the current browser window after I click "Open" in the File Download box that appears. However, the user wants the Excel file to appear outside the browser ...

81. Forcing filetype on download    coderanch.com

I'm using a servlet to send a binary file for the user to download. Here are the headers I'm sending: resp.addHeader("Content-Type", "application/octet-stream"); // Prevent caching resp.addHeader("Cache-Control", "no-cache, must-revalidate"); resp.addHeader("Expires", "Mon, 26 Jul 1997 05:00:00 GMT"); // prefer download instead of in-browser view resp.addHeader("Content-Disposition", "attachment; filename=$extfname"); // fsize is the filesize as reported by File.length() resp.addIntHeader("Content-Length", fsize); But the dialog from my ...

82. How to Specify the dynamic name for setting a file for downloading?    coderanch.com

Hello everyone, These days I am working on a project, and I am facing some problem in it. The thing is that I need to display some results as a result of the database query, and I need to provide a link so that user can download the file by clicking on it. I want to dynamically assign the file-name (as ...

83. Setting headers for file downloads    coderanch.com

84. file download prob......defective open    coderanch.com

85. File download problem: defective open    coderanch.com

I have experienced that behaviour you describe sometimes and it usually doesnt have to do with the database or the file. Do you need a session or a identification so that the file can be downloaded? If so you have to bear in mind that some applications such as word or excel download the file themselves outside the navigator with their ...

86. file download    coderanch.com

88. Downloading and saving/opening a file    coderanch.com

Hello to all... i have written a code for just viewing a binary format file stored in a database when view button is clicked. It is working properly..giving the desired result..when server is running. Later i wanted to modify the code..to ..not only to view the image or file..etc. but give an option to save the file to the local system.But ...

89. Content-Disposition: Download file name problem    coderanch.com

Hi, In my servlet I am trying to let the user download a file using the following code: response.setContentType("application/msword"); response.setHeader("Content-Disposition","attachment; filename=wordfile.doc"); This works fine in Netscape, but when trying to do this in IE (including IE 6.0) the filename is the name of the servlet and not the file name specified. Is there anyway to fix this? If IE cannot handle ...

91. User File Download    coderanch.com

92. Trying to download File    coderanch.com

Hi, I am trying to download a file stored in Database(in a blob).I am just reading it and writing output to outputstream. inputstream is = blob.getBinaryStream(); BufferedInputStream in = new BufferedInputStream(is); and then writing it to output ServletOutputStream out = response.getOutputStream(); byte[] buffer = new byte[4 * 1024]; int data; while((data = in.read(buffer)) != -1){ out.write(buffer, 0, data); I am setting ...

93. How to use File download using CommonsFile API    coderanch.com

I have used CommonsFile to upload a file to my server and write the BLOB into the database. When i retrieve the Blob from the database how can i provide it for the user to download as file. Should i write it to a File before i send it to the client. or can i send the Input/Output stream directly to ...

94. File download Problem    coderanch.com

95. Force file download    coderanch.com

I have to give the user an option to download a csv file I have created a link which points to this file in the server but when user clicks on the link rather than downloading the file the csv file is displayed in the browser We are following FrontServlet Architecture hence Streaming the file as the response or response.setHeader is ...

96. code for file download    coderanch.com

public class POTD extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) { response.setContentType("application/jar"); ServletContext sc = getServletContext(); InputStream is = sc.getResourceAsStream("/test.jar"); int read = 0; byte[] bytes = new byte[1024]; try { OutputStream os = response.getOutputStream(); while ((read = is.read(bytes)) != -1) { os.write(bytes, 0, read); } os.flush(); os.close(); } catch (Exception e) { } } }

97. Download data to file    coderanch.com

Looks fine to me. As to adding the double quotes, you could create a method that adds them at the beginning of a line, the end of a lne, and before and after each comma, and then prints the whole line to the output. This only works if the data contains no commas, of course. And if it contains no commas, ...

98. File Download problem from java    coderanch.com

99. File download link    coderanch.com

Hi, I am a beginner in website development in java. I wish to develop a website that allow users to download zip files from the web. The zip files are stored in another FTP server (with login and password) different from the web server. I only know that one of the way is to add the link below in the webpage: ...

100. Download file HELP?    coderanch.com

Hello all javaranch: I have a jsp a link to download the file that I get from database as BLOB. I am using spring, so I have a controller, go get the file from database, and outstream the file and instream, but when I click on the links download, the dialog box not display, to allow me SAVE or OPEN file. ...