JSP :: How To Get Content Type Of Jar To Download That File
May 21, 2014
String contentType = fi.getContentType(); gives text/plain when my file is.txt file and gives image/jpeg when my file is .jpeg file but when my file is .jar or .docx it will return application/octet-stream and application/vnd.openxmlformats-officedocument.wordprocessingml.document respictively so what to do to get exact mime type.
I have written a code to download .csv file with records from DB.
To download records i am uploading a .CSV file containing telephone number.
After downloading the .CSV file page is not getting refreshed.
Below is the code snippet i am using,where i am setting response content type as test/csv.
ServletOutputStream op = resp.getOutputStream(); // Set content type of output resp.setContentType("text/csv"); resp.setHeader("Content-Disposition", "attachment; filename="test""); op.flush(); op.close();
How that page will get refreshed after csv file download or after response.
Is there a way of detecting the file's type (whether it is a pdf, jpg, png,or anything else) by reading the content of the file. We could read the extension of file to determine it's type, but then extensions can be forged too. So I would like to know if the content inside a file is of a particular type or not. I'm not sure about this, but I have heard somewhere about each having having a specific kind of header which determines its type. So is it possible to read that header and determine it using a program?
JFrame parentFrame = new JFrame(); JFileChooser fileChooser = new JFileChooser(); fileChooser.setDialogTitle(txtPushCode.getText()); int userSelection = fileChooser.showSaveDialog(parentFrame); if (userSelection == JFileChooser.APPROVE_OPTION) {
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But as you can see, it downloads only to "C:android empcoloricon.png". I want to download it to path where I chose in FileChooser with the name and extension I choose. In short, how can I use dynamic file path names in where ever I want in my applications?
I'm working on a simple text editor, and I'm currently saving the contents of my JTextPane in a file using an HTMLEditorKit (text is a JTextPane):
private void save() throws IOException { int returnVal = fc.showSaveDialog(window); if (returnVal == JFileChooser.APPROVE_OPTION) { StyledDocument doc = (StyledDocument)text.getDocument(); HTMLEditorKit kit = new HTMLEditorKit(); BufferedOutputStream out;
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The problem I'm having is that after opening a file that I saved, it does not display (if I disable text/html, it displays the entire html code, but when I re-enable it, nothing displays at all.) Am I loading it wrong, or am I setting the JTextPane's text incorrectly? Or is it, perhaps, another error that I didn't catch?
is my current exercise.so far i have gotten the code to create a file, and ask the user to input their age.what should i use to save what the user writes into the file?
Java Code:
package assignment7; import java.io.*; import java.util.*; public class Exercise2 { public static void main ( String [ ] args ) throws IOException { Scanner scan = new Scanner(System.in);
I am trying to display the files stored in server using jsp. I used the code below to display. But for pdf it is asking to download (No option for open). For XLS, XLSX, DOCX, PPT and PPTX it is showing zip file to download. For type doc it is showing junk data.
<% String fileName=(String)request.getAttribute("fileName"); int loc = fileName.lastIndexOf("."); String fileName1 = fileName.substring(0, loc); String fileName2 = fileName.substring(loc + 1, fileName.length());
Usually, the code works very well. But sometimes, the download gets stalled indefinitely. Is there a way to set a time out period for the downloading of this file?
Is there a way to measure current download speed of a file being downloaded? I've searched all over google and the only thing i get is average download speed. This is basically how it is being done, the result is average download speed.
Java Code:
OutputStream out = null; URLConnection conn; InputStream in = null; long startup = System.currentTimeMillis(); try { URL url = new URL(adress); out = new BufferedOutputStream(
Jun 16, 2014 6:21:33 PM practice.TestFTPProgram main SEVERE: null java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
I can't find an handler or a listener to intercept the 'Save as' window that should pops up when i click on a download link in a webview embedded page.
I'm trying to parse and compare the content of a zip file. However I'm stuck at what SHOULD be a very simple problem, however I can't seem to find a solution. I have done the following:
ZipInputStream zin1 = new ZipInputStream(fin); ZipEntry ze1 = null; fin2 = new FileInputStream(fileName2); ZipInputStream zin2 = new ZipInputStream(fin2); ZipEntry ze2 = null; //fin.close(); ze1 = zin1.getNextEntry(); ze2 = zin2.getNextEntry();
Which gives me the first entry of each zipfile as a ZipEntry type object. I have tried getting the path of the file (inside the zip file) and using this to create a File type object. This does not seem to work though I get:
Exception in thread "main" java.io.FileNotFoundException: My DocumentsmetadatacoreProperties.xml (The system cannot find the file specified) at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.<init>(Unknown Source) at java.io.FileReader.<init>(Unknown Source)
And this is because I get a null return from trying to create the File file1 = new File(correctLocation);
I guess I cannot access the file inside a zip file this way. So my question is how can I make a ZipEntry type object into a File type object?
I have a class that do a soap request to a web service , the response is containing a base64 string repressing a file content , how can i send this string to a servlet (maybe any other way) to send it to the user as a downloaded file .
I need to get the html in string when i hit the hit the jsp in servlets basically i need to put the output of jsp in pdf file when i hit one link i need to download that data in pdf file. I am using itextpdf.
//Get the output stream for writing PDF object OutputStream outStream=pResponse.getOutputStream(); ByteArrayOutputStream baosPDF = new ByteArrayOutputStream();
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I need to convert the sample download.jsp to html so that i can parse
I am trying to read a content of file downloaded from ftp and return it as a String. This is what I use:
Java Code:
import java.io.BufferedInputStream; import java.io.IOException; import java.io.InputStream; import org.apache.commons.net.ftp.FTPClient; public class Test { public static void main(String [] args) throws IOException{ FTPClient ftp = new FTPClient();
[code]....
The code does not work, although all the links are correct.
I just created an applet that I want to call from a html file.
The applet code looks like this (and works):
package jav12;
import java.awt.*; import javax.swing.*; public class Welcome extends JApplet { public Welcome(){ } public void init() { getContentPane().add(new Label("Yessss it works",Label.CENTER));
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When I click on the html file the content of the page is blocked and the applet isn't loaded. What can I do to fix this. I think it has something to do with rights. This is a crosspost to JApplet content blocked
I would like to syout on the console a line of a serialized object in this example I would like to have as output 80 20 in the console. How can i put the scroll to my code?
import java.io.*; public class Box implements Serializable{ public static void main (String[] args) throws ClassNotFoundException { Pond myBox = new Pond(); myBox.setWidth(70); myBox.setHeight(20);
I have the file in my project sitemap.xml, which i am trying to write via XMLStreamWriter. My code gets successfully executed as i can see the logs. But my sitemap.xml file keeps blank. Why nothing is getting write in my sitemap.xml file. Below is my servlet code.
This is sort of like the last problem I had but it's all about the formatting at the end. I have a file that reads something like:
Name a bunch of text here and perhaps a second or even a third line
I need to output this as:
Name; "a bunch of text here and perhaps a second or even a third line"
Right now I find 'Name' and it outputs:
Namea bunch of text here and perhaps a second or even a third line
How would I add ";" and quotes in the middle? I can imagine that I may need to find name, then skip to the next line and just add name manually as the variable output of the search string.
This is where I am now
public static void main(String[] args) { boolean output=false; String name=""; String junk="CHAMBERS"; TextIO.putln("Search for a name"); name = TextIO.getln(); TextIO.readFile("doc.txt");
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So I'm almost there, but those dange double Names are killing me. I tried to add a bit of code where:
<%@ page import="javax.print.*"%> <%@ page import="javax.print.attribute.*"%> <%@ page import="java.io.*"%> <%out.println("Printing..."); String filename = "c:/20140505_3_40.txt";//this is the text file i want to send to printer // am using tomcat 8 PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();