Class StandardJarScanner

java.lang.Object
org.apache.tomcat.util.scan.StandardJarScanner
All Implemented Interfaces:
JarScanner
public class StandardJarScanner extends Object implements JarScanner
The default JarScanner implementation scans the WEB-INF/lib directory followed by the provided classloader and then works up the classloader hierarchy. This implementation is sufficient to meet the requirements of the Servlet 3.0 specification as well as to provide a number of Tomcat specific extensions. The extensions are:
  • Scanning the classloader hierarchy (enabled by default)
  • Testing all files to see if they are JARs (disabled by default)
  • Testing all directories to see if they are exploded JARs (disabled by default)
All of the extensions may be controlled via configuration.

  • Constructor Details

    • StandardJarScanner

      public StandardJarScanner()

  • Method Details

    • isScanClassPath

      public boolean isScanClassPath()

    • setScanClassPath

      public void setScanClassPath(boolean scanClassPath)

    • isScanManifest

      public boolean isScanManifest()

    • setScanManifest

      public void setScanManifest(boolean scanManifest)

    • isScanAllFiles

      public boolean isScanAllFiles()

    • setScanAllFiles

      public void setScanAllFiles(boolean scanAllFiles)

    • isScanAllDirectories

      public boolean isScanAllDirectories()

    • setScanAllDirectories

      public void setScanAllDirectories(boolean scanAllDirectories)

    • isScanBootstrapClassPath

      public boolean isScanBootstrapClassPath()

    • setScanBootstrapClassPath

      public void setScanBootstrapClassPath(boolean scanBootstrapClassPath)

    • getJarScanFilter

      public JarScanFilter getJarScanFilter()
      Specified by:
      getJarScanFilter in interface JarScanner

    • setJarScanFilter

      public void setJarScanFilter(JarScanFilter jarScanFilter)
      Specified by:
      setJarScanFilter in interface JarScanner

    • scan

      public void scan(JarScanType scanType, ServletContext context, JarScannerCallback callback)
      Scan the provided ServletContext and class loader for JAR files. Each JAR file found will be passed to the callback handler to be processed.
      Specified by:
      scan in interface JarScanner
      Parameters:
      scanType - The type of JAR scan to perform. This is passed to the filter which uses it to determine how to filter the results
      context - The ServletContext - used to locate and access WEB-INF/lib
      callback - The handler to process any JARs found

    • doScanClassPath

      protected void doScanClassPath(JarScanType scanType, ServletContext context, JarScannerCallback callback, Set<URL> processedURLs)

    • processURLs

      protected void processURLs(JarScanType scanType, JarScannerCallback callback, Set<URL> processedURLs, boolean isWebapp, Deque<URL> classPathUrlsToProcess)

    • addClassPath

      protected void addClassPath(Deque<URL> classPathUrlsToProcess)

    • process

      protected void process(JarScanType scanType, JarScannerCallback callback, URL url, String webappPath, boolean isWebapp, Deque<URL> classPathUrlsToProcess) throws IOException
      Throws:
      IOException