FileResource (Apache Tomcat 11.0.21 API Documentation)
Description: declaration: package: org.apache.catalina.webresources, class: FileResource

# Class FileResource

java.lang.Object
org.apache.catalina.webresources.AbstractResource
org.apache.catalina.webresources.FileResource

All Implemented Interfaces:
  `WebResource`

public class FileResource extends AbstractResource
Represents a single resource (file or directory) that is located on a file system.

- ## Field Summary

  ### Fields inherited from class AbstractResource

  `sm`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `FileResource(WebResourceRoot root, String webAppPath, File resource, boolean readOnly, Manifest manifest)`
  `FileResource(WebResourceRoot root, String webAppPath, File resource, boolean readOnly, Manifest manifest, WebResourceLockSet lockSet, String lockKey)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `canRead()`
  `boolean`
  `delete()`
  `protected InputStream`
  `doGetInputStream()`
  `boolean`
  `exists()`
  `String`
  `getCanonicalPath()`
  `Certificate[]`
  `getCertificates()`
  `URL`
  `getCodeBase()`
  Returns the code base for this resource.
  `final byte[]`
  `getContent()`
  `long`
  `getContentLength()`
  `long`
  `getCreation()`
  `long`
  `getLastModified()`
  `protected Log`
  `getLog()`
  `Manifest`
  `getManifest()`
  `String`
  `getName()`
  `URL`
  `getURL()`
  `boolean`
  `isDirectory()`
  `boolean`
  `isFile()`
  `boolean`
  `isVirtual()`
  Indicates if this resource is required for applications to correctly scan the file structure but that does not exist in either the main or any additional `WebResourceSet`.

  ### Methods inherited from class AbstractResource

  `getETag, getInputStream, getLastModifiedHttp, getMimeType, getStrongETag, getWebappPath, getWebResourceRoot, setMimeType`

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### FileResource

    public FileResource(WebResourceRoot root, String webAppPath, File resource, boolean readOnly, Manifest manifest)

  - ### FileResource

    public FileResource(WebResourceRoot root, String webAppPath, File resource, boolean readOnly, Manifest manifest, WebResourceLockSet lockSet, String lockKey)

- ## Method Details

  - ### getLastModified

    public long getLastModified()
    Returns:
      `File.lastModified()`.

  - ### exists

    public boolean exists()
    Returns:
      `File.exists()`.

  - ### isVirtual

    public boolean isVirtual()
    Description copied from interface: `WebResource`
    Indicates if this resource is required for applications to correctly scan the file structure but that does not exist in either the main or any additional `WebResourceSet`. For example, if an external directory is mapped to /WEB-INF/lib in an otherwise empty web application, /WEB-INF will be represented as a virtual resource.
    Returns:
      `true` for a virtual resource

  - ### isDirectory

    public boolean isDirectory()
    Returns:
      `File.isDirectory()`.

  - ### isFile

    public boolean isFile()
    Returns:
      `File.isFile()`.

  - ### delete

    public boolean delete()
    Returns:
      `File.delete()`.

  - ### getName

    public String getName()
    Returns:
      `File.getName()`.

  - ### getContentLength

    public long getContentLength()
    Returns:
      `File.length()`.

  - ### getCanonicalPath

    public String getCanonicalPath()
    Returns:
      `File.getCanonicalPath()`.

  - ### canRead

    public boolean canRead()
    Returns:
      `File.canRead()`.

  - ### doGetInputStream

    protected InputStream doGetInputStream()
    Specified by:
      `doGetInputStream` in class `AbstractResource`

  - ### getContent

    public final byte[] getContent()
    Returns:
      the binary content of this resource or `null` if it is not available in a byte[] because, for example, it is too big.

  - ### getCreation

    public long getCreation()
    Returns:
      The time the file was created. If not available, the result of `WebResource.getLastModified()` will be returned.

  - ### getURL

    public URL getURL()
    Returns:
      a URL to access the resource or `null` if no such URL is available or if the resource does not exist.

  - ### getCodeBase

    public URL getCodeBase()
    Description copied from interface: `WebResource`
    Returns the code base for this resource.

    The expectation is that this will be deprecated and then removed once the SecurityManager has been fully removed from the JRE, and it has been confirmed that the JRE no longer depends on code base.

    Returns:
      the code base for this resource that will be used when looking up the assigned permissions for the code base in the security policy file when running under a security manager.

  - ### getCertificates

    public Certificate[] getCertificates()
    Returns:
      the certificates that were used to sign this resource to verify it or @null if none.
    See Also:
      - `JarEntry.getCertificates()`

  - ### getManifest

    public Manifest getManifest()
    Returns:
      the manifest associated with this resource or @null if none.
    See Also:
      - `JarFile.getManifest()`

  - ### getLog

    protected Log getLog()
    Specified by:
      `getLog` in class `AbstractResource`