filenotfoundexception

why sometime it throws FileNotFoundException

由 烈酒焚心 提交于 2019-12-06 17:11:59
问题 The code works for most of the time, but some time it throws exception. Couldn't figure out what could cause it. What is does is to create a file at /storage/emulated/0/Download/theFileName.jpg and write data to it (from sourceFile which does exist), but got "file not exist" exception for the newly created file. (it does have uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE", and uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE " in manifest). File

Download image from web url in java?

由 此生再无相见时 提交于 2019-12-06 11:41:56
问题 URL url = new URL("http://localhost:8080/Work/images/abt.jpg"); InputStream in = new BufferedInputStream(url.openStream()); ByteArrayOutputStream out = new ByteArrayOutputStream(); byte[] buf = new byte[1024]; int n=0; while (-1!=(n=in.read(buf))) { out.write(buf, 0, n); } out.close(); in.close(); byte[] response1 = out.toByteArray(); FileOutputStream fos = new FileOutputStream("C://abt.jpg"); fos.write(response1); fos.close(); in this code there is some error in last 3 lines SEVERE: Servlet

Android APIv29 FileNotFoundException EACCES (Permission denied)

由 微笑、不失礼 提交于 2019-12-06 06:33:13
问题 I'm not able to access storage when building for targetSdkVersion v29. Here is my gradle configuration: compileSdkVersion 29 buildToolsVersion "29.0.2" ... minSdkVersion 15 targetSdkVersion 29 NOTE that WRITE_EXTERNAL_STORAGE permission is granted and the same setup works fine when building for targetSdkVersion 28 . Here is my implementation: val outputFolder = File(baseFolder + File.separator + "Output Folder") if (!outputFolder.exists()) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)

FileNotFoundException thrown for a referenced assembly

由 陌路散爱 提交于 2019-12-06 03:02:17
问题 I'm getting a really weird FileNotFoundException thrown the first time I try to use a class defined in an assembly I have referenced. The assembly hasn't changed, and the location in the project file corresponds correctly to the physical path on disk. This suddenly started failing in a solution that consists of two library projects, a windows service project and a console application, when I added installers to the windows service and a setup project. However, I have the console app as a

Guarding against exceptions (preventative maintenance) when working with network / file system calls?

由 雨燕双飞 提交于 2019-12-06 02:11:32
I have a friend who is in disagreement with me on this, and I'm just looking to get some feedback as to who is right and wrong in this situation. FileInfo file = ...; if (file.Exists) { //File somehow gets deleted //Attempt to do stuff with file... } The problem my friend points out is that, "so what if the file exists when I check for existence? There is nothing to guard against the chance that right after the check the file gets deleted and attempts to access it result in an exception. So, is it even worth it to check for existence before-hand?" The only thing I could come up with is that

Getting file from sdcard with Uri

由 淺唱寂寞╮ 提交于 2019-12-06 01:49:25
I let the user select a file from the sdcard to upload to my server and save the Uri that gets returned to me in onActivityResult example: file:///storage/emulated/0/Download/menu-4.27.13.pdf when I try to convert it to a byte array to send to the server I get the FileNotFoundException if(!fileURI.equals("")){ File pdf = new File(fileURI); try { FileInputStream fin = new FileInputStream(pdf); byte fileContent[] = new byte[(int)pdf.length()]; fin.read(fileContent); fin.close(); String pdfString = Base64.encode(fileContent); sb.append(pdfString); } catch (FileNotFoundException e) { e

java.io.FileNotFoundException in android

由 允我心安 提交于 2019-12-06 01:46:52
问题 I'm selecting a image from gallery using code public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.gallery); Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(i, SELECT_PICTURE); } public void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) { Bitmap bitmap = null; switch (requestCode) { case SELECT_PICTURE: if (resultCode ==

java.io.FileNotFoundException: (No such file or directory) when running from eclipse

由 浪尽此生 提交于 2019-12-05 20:36:03
问题 I am writing to a file and want console output, // TODO Create a game engine and call the runGame() method public static void main(String[] args) throws Exception { NewGame myGame = new TheGame().new NewGame(); myGame.runGame(); PrintStream out = new PrintStream(new FileOutputStream("output.txt")); System.setOut(out); } This gives me console output, but it throws the following exception: java.io.FileNotFoundException: TheGame.txt (No such file or directory) at java.io.FileInputStream.open

Could not load file or assembly log4net

由 耗尽温柔 提交于 2019-12-05 14:04:36
问题 I have added log4net to my project and it is working just fine on my machine, but when I sent the release version of my application to my colleague, he receives this FileNotFoundException : Could not load file or assembly 'log4net, Version=1.2.13.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a' But the strange thing is that in my app.config I'm not even using the above version of log4net: <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>

Java reading txt.file - access denied?

由 别来无恙 提交于 2019-12-05 13:55:54
I have created a txt file which I have saved in My Documents on my computer. I am trying to read the txt file through FileReader and BufferedReader . However, when I try to run the program I get the error message: java.io.FileNotFoundException: <filelocation> (Access is denied) Does anyone know what causes this, and how I might fix the problem? I have tried saving the document other places too, but I always get this message. I am sure the file path is correclty entered. One random guess is that you may be having multiple instance of your test program running so the file is locked by earlier
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