filenotfoundexception | 易学教程

Java applet can't open files under Safari 7 (Mac OS X 10.9)

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问题 We have a web app that uses Java applet to manipulate files on local disk. We develop it for quite a while and we already know all types with issues an applet may have with modern OS'es and browsers and latest Java versions and new security restrictions. Yesterday Apple rolled out its new Mac OS 10.9 Mavericks with new Safari browser (7.0). I tested our web app under Safari 7 / Mac OS X 10.9 just to find that Safari 7 (probably?) blocks access to local files from Java applet. Although the

Python's “open()” throws different errors for “file not found” - how to handle both exceptions?

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I have a script where a user is prompted to type a filename (of a file that is to be opened), and if the file doesn't exist in the current directory, the user is prompted again. Here is the short version: file = input("Type filename: ") ... try: fileContent = open(filename, "r") ... except FileNotFoundError: ... When I tested my script on my MacOS X in Python 3.3x it worked perfectly fine when I type the wrong filename on purpose (it executes the suite under "expect"). However, when I wanted to run my code on a Windows computer in Python 3.2x, I get an error that says that "FileNotFoundError"

How to reference a File in raw folder in Android

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I just want to create a File object like this File myImageFile = new File ("image1") ; but it is giving me exception of FileNotFoundException How can i reference a file inside my raw Folder EDIT: Actually i wanted to do something like this MultipartEntity multipartEntity= new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); multipartEntity.addPart("uploaded", new FileBody(new File("myimage"))); here are 2 functions. one to read from RAW and one from the Assets /** * Method to read in a text file placed in the res/raw directory of the * application. The method reads in all lines of the

Xamarin build error Exception while loading assemblies: System.IO.FileNotFoundException

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问题 always i try to Build my Xamarin app i get this error. And i dont know why. I use the System.Security.dll of .Net Framework 4 and i though this should work. Thanks. C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(2,2): Error: Exception while loading assemblies: System.IO.FileNotFoundException: Could not load assembly 'System.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. Perhaps it doesn't exist in the Mono for Android profile?

Get FileNotFoundException when initialising FileInputStream with File object

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问题 I am trying to initialise a FileInputStream object using a File object. I am getting a FileNotFound error on the line fis = new FileInputStream(file); This is strange since I have opened this file through the same method to do regex many times. My method is as follows: private BufferedInputStream fileToBIS(File file){ FileInputStream fis = null; BufferedInputStream bis =null; try { fis = new FileInputStream(file); bis = new BufferedInputStream(fis); } catch (FileNotFoundException e) { // TODO

FileNotFoundException for HttpURLConnection in Ice Cream Sandwich

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I have an Android app that works fine with Android 2.x and 3.x, but it fails when run on Android 4.x. The problem is in this section of code: URL url = new URL("http://blahblah.blah/somedata.xml"); HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod("GET"); urlConnection.setDoOutput(true); urlConnection.connect(); InputStream inputStream = urlConnection.getInputStream(); When the application is running on Android 4.x, the getInputStream() call results in a FileNotFoundException . When the same binary is running on earlier versions of

Android FileNotFound Exception - Cannot getInputStream from image URL that does not have file format

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问题 The title is pretty self explanatory. the following code...: URL imageUrl = new URL(url); try { HttpURLConnection conn= (HttpURLConnection)imageUrl.openConnection(); conn.setDoInput(true); conn.connect(); int length = conn.getContentLength(); InputStream is = conn.getInputStream(); return BitmapFactory.decodeStream(is); } catch (IOException e) { e.printStackTrace(); } Will fail if the url does not contain the file format. For example, some images hosted by google will display the image yet

HttpURLConnection java.io.FileNotFoundException

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问题 The code below works great if I connect to what seems to be Apache servers, however when I try to connect to my .Net server it throws an error. I am guessing it is a header requirement, but I can not seem to get a successful response no matter what I try. public String Download(String Url) { String filepath=null; try { //set the download URL, a url that points to a file on the internet //this is the file to be downloaded URL url = new URL(Url); //create the new connection HttpURLConnection

java.io.FileNotFoundException in eclipse

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问题 Code: import java.io.*; import java.util.Scanner; public class Driver { private int colorStrength; private String color; public static void main(String[] args) throws IOException { String line, file = "strength.txt"; File openFile = new File(file); Scanner inFile = new Scanner(openFile); while (inFile.hasNext()) { line = inFile.nextLine(); System.out.println(line); } inFile.close(); } } This is a small part of a program I am writing for a class (the two private attributes have yet to be used

How to check if file exists in a Windows Store App?

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Is there any other way of checking whether a file exists in a Windows Store app? try { var file = await ApplicationData.Current.LocalFolder.GetFileAsync("Test.xml"); //no exception means file exists } catch (FileNotFoundException ex) { //find out through exception } According to the accepted answer in this post , there is no other way at the moment. However, the File IO team is considering changing the the api so that it returns null instead of throwing an exception. Quote from the linked post: Currently the only way to check if a file exists is to catch the FileNotFoundException. As has been