com.atlassian.confluence.util

Class ClasspathUtils

java.lang.Object

com.atlassian.confluence.util.ClasspathUtils

public class ClasspathUtils
extends Object

Classpath discovery utilities

Constructor Summary

Constructors

Constructor and Description
ClasspathUtils()

Method Summary

Modifier and Type	Method and Description
static List<String>	getClassesFromJar(URL jarUrl) Get a list of class files in the JAR specified by a URL.
static ClasspathClasses	getClassesInClasspathJars() Gets a list of JARs from the thread context classloader, and returns a ClasspathClasses object with the class file names and the JARs which they appear in.
static List<URL>	getClassLoaderClasspath(ClassLoader classloader) Get the classpath searched for by a particular classloader (only supports URLClassLoaders presently)
static ClasspathClasses	getFilesInClasspathJars() Gets a list of JARs from the thread context classloader, and returns a ClasspathClasses object with the class file names and the JARs which they appear in.
static Optional<File>	getJarFileFromClass(Class clazz) If the provided class has been loaded from a jar file, will find the absolute path to that jar file.
static URL[]	getSystemClasspath() Deprecated. since 7.0.1
static List<ClassLoader>	getThreadContentClassLoaderHierarchy() Get a list of classloaders in the thread context classloader hierarchy
static URL[]	getThreadContextClasspath() This method will return an array of URLs used by the thread context classloader and its parent classloaders.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClasspathUtils

public ClasspathUtils()

Method Detail

getSystemClasspath

@Deprecated
public static URL[] getSystemClasspath()

Deprecated. since 7.0.1

This method will return an array of URLs used by the system classloader.

Returns:

Array of URLs in classpath lookup order

getThreadContextClasspath

public static URL[] getThreadContextClasspath()

This method will return an array of URLs used by the thread context classloader and its parent classloaders.

Returns:

Array of URLs loaded in the classpath.

getThreadContentClassLoaderHierarchy

public static List<ClassLoader> getThreadContentClassLoaderHierarchy()

Get a list of classloaders in the thread context classloader hierarchy

Returns:

list of classloaders in order of delegation

getClassLoaderClasspath

public static List<URL> getClassLoaderClasspath(ClassLoader classloader)

Get the classpath searched for by a particular classloader (only supports URLClassLoaders presently)

Parameters:

classloader - to examine

Returns:

List of paths searched on by the classloader, or null if the classloader does not support path discovery

getClassesFromJar

public static List<String> getClassesFromJar(URL jarUrl)

Get a list of class files in the JAR specified by a URL.

Parameters:

jarUrl - the URL of a JAR on the classpath, such as one of the items in the list returned by getClassLoaderClasspath(ClassLoader)

Returns:

a List of Strings which are the class files in the JAR, an empty list if the JAR contains no class files or null if the JAR cannot be opened.

getClassesInClasspathJars

public static ClasspathClasses getClassesInClasspathJars()

Gets a list of JARs from the thread context classloader, and returns a ClasspathClasses object with the class file names and the JARs which they appear in. Useful for finding duplicate classes in the classpath.

Returns:

a ClasspathClasses object contains classes found in JARs on the classpath. If the thread context classloader is not a URLClassLoader, returns null.

See Also:

getThreadContextClasspath()

getFilesInClasspathJars

public static ClasspathClasses getFilesInClasspathJars()

Gets a list of JARs from the thread context classloader, and returns a ClasspathClasses object with the class file names and the JARs which they appear in. Useful for finding duplicate classes in the classpath.

Returns:

a ClasspathClasses object contains classes found in JARs on the classpath. If the thread context classloader is not a URLClassLoader, returns null.

See Also:

getThreadContextClasspath()

getJarFileFromClass

public static Optional<File> getJarFileFromClass(Class clazz)

If the provided class has been loaded from a jar file, will find the absolute path to that jar file.

Parameters:

clazz - The jar file that contained the class file that represents this class will be found.