Develop Reference

java.nio.file.AccessDeniedException error?

Im trying to zip my created folder. Right now im testing localy and it create folder but after that i want to zip it.
This is my code for zip:
public static void pack(final String sourceDirPath, final String zipFilePath) throws IOException {
Path p = Files.createFile(Paths.get(zipFilePath));
try (ZipOutputStream zs = new ZipOutputStream(Files.newOutputStream(p))) {
Path pp = Paths.get(sourceDirPath);
Files.walk(pp).filter(path -> !Files.isDirectory(path)).forEach(path -> {
ZipEntry zipEntry = new ZipEntry(pp.relativize(path).toString());
try {
zs.putNextEntry(zipEntry);
Files.copy(path, zs);
zs.closeEntry();
} catch (IOException e) {
System.err.println(e);
}
});
} }
But im getting an error AccessDeniedException. Is there any option to zip created folder, i dont want to zip file because in that folder i will have subfolders, so i want to zip main folder. Any suggestion how can i achive that?

According to:
Getting "java.nio.file.AccessDeniedException" when trying to write to a folder
I think you should add the filename and the extension to your 'zipFilePath', for example: "C:\Users\XXXXX\Desktop\zippedFile.zip"

Relative path to file | Springboot

I am new to Spring-boot/Java and trying to read the contents of a file in a String.
What's the issue:
I'm getting "File not found exception" and unable to read the file. Apparently, I'm not giving the correct file path.
i've attached the directory structure and my code. I'm in FeedProcessor file and want to read feed_template.php (see image)
public static String readFileAsString( ) {
String text = "";
try {
// text = new String(Files.readAllBytes(Paths.get("/src/main/template/feed_template_head.php")));
text = new String(Files.readAllBytes(Paths.get("../../template/feed_template_head.php")));
} catch (IOException e) {
e.printStackTrace();
}
return text;
}

You need to put template folder inside resource folder. And then use following code.
#Configuration
public class ReadFile {
private static final String FILE_NAME =
"classpath:template/feed_template_head.php";
#Bean
public void initSegmentPerformanceReportRequestBean(
#Value(FILE_NAME) Resource resource,
ObjectMapper objectMapper) throws IOException {
new BufferedReader(resource.getInputStream()).lines()
.forEach(eachLine -> System.out.println(eachLine));
}
}
I suggest you to go though once Resource topic in spring.
https://docs.spring.io/spring/docs/3.0.x/spring-framework-reference/html/resources.html

How to display uploaded image via CSS

i want to upload an image via primefaces:fileUpload and then display it on a div for example with css.
I can already save the image on the server:
public void upload() throws IOException, URISyntaxException {
if (logo != null) {
File fileImage = new File(System.getProperty("jboss.server.data.dir"), "uploads.png");
BufferedImage img = ImageIO.read(new ByteArrayInputStream(logo.getContents()));
if (fileImage.exists()) {
fileImage.delete();
}
ImageIO.write(img, "png", fileImage);
}
}
And then i tried to get the web path to the file but that didn't worked:
public String getImagePath(){
File fileImage = new File(System.getProperty("jboss.server.data.dir"), "uploads.png");
Set<String> set = FacesContext.getCurrentInstance().getExternalContext().getResourcePaths(fileImage.getAbsolutePath());
return set.iterator().next();
}
I need something like this:
/ewarehouse/javax.faces.resource/dynamiccontent.properties.xhtml?ln=primefaces&v=6.2&v=6.2&pfdrid=f52e395e4f38c09a1990e8f9d0c5806d&pfdrt=sc&pfdrid_c=true
Can someone help me or has a other way to do this ?

It worked for me to create a servlet and refered to the file position.
background-image: url('#{'/'}ewarehouse#{'/'}images//dynamic#{'/'}?file=uploads.png')
In css it look a bit weird but this way it worked Thanks for the answer to #JasperdeVries and #Kukeltje

Extracting Text From JPG

I've tried this code and added the needed jar files but still I'm getting an error message like Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'libtesseract302'.
Is there a complete tutorial how to extract text and what things should be done to address the error? Any help is appreciated...
import net.sourceforge.tess4j.*;
import java.io.File;
public class ExtractTxtFromImg {
public static void main(String[] args) {
File imgFile = new File("C:\\Documents and Settings\\rueca\\Desktop\\sampleImg.jpg");
Tesseract instance = Tesseract.getInstance(); // JNA Interface Mapping
// Tesseract1 instance = new Tesseract1(); // JNA Direct Mapping
try {
String result = instance.doOCR(imgFile);
System.out.println(result);
} catch (Exception e) {
System.err.println(e.getMessage());
}
}
}

In addition to adding the jars, you also need to add the natives. You can do so with Djava.library.path="C:\[absolute path to dir containing *.dll files and such]"
Note that you need to provide the directory, not the file itself.

Can't load a BufferedImage

I have a form with that code:
public Form()
{
initComponents();
try
{
File file= new File("avatar.jpg");
BufferedImage image= ImageIO.read(file);
}
catch (IOException ex)
{
System.out.println("Failed to load image");
}
}
The problem is that the code always throws the IOException and enters in the catch block.
So the file isn't read.
I have created the project with Netbeans 7.2, and the directory looks like this:
What's the problem? Maybe the file shouldn't be there but in the father directory? Or what?

Is your image being packaged within your jar? to find this out, extract you jar file like you would an ordinary zip file and check if the image is anywhere there (normally located by jarname\packagename\filename. If so then you'll need to extract your image as a resource using getResourceAsStream().
It would be something like:
public class Test {
private static final String absName = "/yourpackage/yourimage.jpg";
public static void main(String[] args) {
Class c=null;
try {
c = Class.forName("yourpackage.Test");//pkg is the package name in which the resource lies
} catch (Exception ex) {
// This should not happen.
}
InputStream s = c.getResourceAsStream(absName);
// do something with it.
}
public InputStream getResourceAsStream(String name) {
name = resolveName(name);
ClassLoader cl = getClassLoader();
if (cl==null) {
return ClassLoader.getSystemResourceAsStream(name); // A system class.
}
return cl.getResourceAsStream(name);
}
public java.net.URL getResource(String name) {
name = resolveName(name);
ClassLoader cl = getClassLoader();
if (cl==null) {
return ClassLoader.getSystemResource(name); // A system class.
}
return cl.getResource(name);
}
private String resolveName(String name) {
if (name == null) {
return name;
}
if (!name.startsWith("/")) {
Class c = this;
while (c.isArray()) {
c = c.getComponentType();
}
String baseName = c.getName();
int index = baseName.lastIndexOf('.');
if (index != -1) {
name = baseName.substring(0, index).replace('.', '/') + "/" + name;
}
} else {
name = name.substring(1);
}
return name;
}
}
Reference:
Accessing Resources

It looks like you have a namespace of poker.*
It all depends on where the jvm is initialized from.
Where is your main? Is it in /Users/ramy/NetBeansProjects/Poker/src?
Also, I suggest you use getResource() for all of your file loading needs, especially inside jars.
this.getClass().getResource("/resource/buttons1.png")
or
this.getClass().getResourceAsStream("/resource/TX_Jello2.ttf")
You can find out where your programs default path is by doing the following:
System.getProperty("user.dir");

Without seeing the error I would say the most likely cause is it can't find the file. So I suggest you replace "avatar.jpg" in the File constructor with the absolute file path to it. e.g.
File file = new File("INSERT_PATH_TO_FILE/avatar.jpg");

You cannot assume the image will be "there" because the relative path between your .java and the image seems ok.
Accessing a resource depends of your "kind" of project (Web, standalone....). In your case, you can try to get the image from your classpath
final File inputFile = new ClassPathResource("....").getFile();
final BufferedImage inputImg = ImageIO.read(inputFile);