org.springframework.core.io
Class ClassPathResource

java.lang.Object
  org.springframework.core.io.AbstractResource
      org.springframework.core.io.ClassPathResource

All Implemented Interfaces:

InputStreamSource, Resource

public class ClassPathResource

extends AbstractResource

Resource implementation for class path resources. Uses either the thread context class loader, a given ClassLoader or a given Class for loading resources.

Supports resolution as java.io.File if the class path resource resides in the file system, but not for resources in a JAR. Always supports resolution as URL.

Since:

28.12.2003

Author:

Juergen Hoeller

See Also:

Thread.getContextClassLoader(), ClassLoader.getResourceAsStream(java.lang.String), Class.getResourceAsStream(java.lang.String)

Constructor Summary

	ClassPathResource(String path) Create a new ClassPathResource for ClassLoader usage.
	ClassPathResource(String path, Class clazz) Create a new ClassPathResource for Class usage.
	ClassPathResource(String path, ClassLoader classLoader) Create a new ClassPathResource for ClassLoader usage.
protected	ClassPathResource(String path, ClassLoader classLoader, Class clazz) Create a new ClassPathResource with optional ClassLoader and Class.

Method Summary

Resource	createRelative(String relativePath) This implementation throws a FileNotFoundException, assuming that relative resources cannot be created for this resource.
boolean	equals(Object obj) This implementation compares description strings.
String	getDescription() Return a description for this resource, to be used for error output when working with the resource.
File	getFile() This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to an absolute file path.
String	getFilename() This implementation always throws IllegalStateException, assuming that the resource does not carry a filename.
InputStream	getInputStream() Return an InputStream.
URL	getURL() This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to a URL.
int	hashCode() This implementation returns the description's hash code.

Methods inherited from class org.springframework.core.io.AbstractResource

exists, isOpen, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ClassPathResource

public ClassPathResource(String path)

Create a new ClassPathResource for ClassLoader usage. A leading slash will be removed, as the ClassLoader resource access methods will not accept it.

The thread context class loader will be used for loading the resource.

Parameters:

path - the absolute path within the class path

See Also:

ClassLoader.getResourceAsStream(java.lang.String), Thread.getContextClassLoader()

ClassPathResource

public ClassPathResource(String path,
                         ClassLoader classLoader)

Create a new ClassPathResource for ClassLoader usage. A leading slash will be removed, as the ClassLoader resource access methods will not accept it.

Parameters:

path - the absolute path within the classpath

classLoader - the class loader to load the resource with, or null for the thread context class loader

See Also:

ClassLoader.getResourceAsStream(java.lang.String)

ClassPathResource

public ClassPathResource(String path,
                         Class clazz)

Create a new ClassPathResource for Class usage. The path can be relative to the given class, or absolute within the classpath via a leading slash.

Parameters:

path - relative or absolute path within the class path

clazz - the class to load resources with

See Also:

Class.getResourceAsStream(java.lang.String)

ClassPathResource

protected ClassPathResource(String path,
                            ClassLoader classLoader,
                            Class clazz)

Create a new ClassPathResource with optional ClassLoader and Class. Only for internal usage.

Parameters:

path - relative or absolute path within the classpath

classLoader - the class loader to load the resource with, if any

clazz - the class to load resources with, if any

Method Detail

getInputStream

public InputStream getInputStream()
                           throws IOException

Description copied from interface: InputStreamSource

Return an InputStream. It is expected that each call creates a fresh stream.

Throws:

IOException - if the stream could not be opened

getURL

public URL getURL()
           throws IOException

Description copied from class: AbstractResource

This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to a URL.

Specified by:

getURL in interface Resource

Overrides:

getURL in class AbstractResource

Throws:

IOException

getFile

public File getFile()
             throws IOException

Description copied from class: AbstractResource

This implementation throws a FileNotFoundException, assuming that the resource cannot be resolved to an absolute file path.

Specified by:

getFile in interface Resource

Overrides:

getFile in class AbstractResource

Throws:

IOException

createRelative

public Resource createRelative(String relativePath)

Description copied from class: AbstractResource

This implementation throws a FileNotFoundException, assuming that relative resources cannot be created for this resource.

Specified by:

createRelative in interface Resource

Overrides:

createRelative in class AbstractResource

getFilename

public String getFilename()

Description copied from class: AbstractResource

This implementation always throws IllegalStateException, assuming that the resource does not carry a filename.

Specified by:

getFilename in interface Resource

Overrides:

getFilename in class AbstractResource

getDescription

public String getDescription()

Description copied from interface: Resource

Return a description for this resource, to be used for error output when working with the resource.

Implementations are also encouraged to return this value from their toString method.

See Also:

Object.toString()

equals

public boolean equals(Object obj)

Description copied from class: AbstractResource

This implementation compares description strings.

Overrides:

equals in class AbstractResource

See Also:

Resource.getDescription()

hashCode

public int hashCode()

Description copied from class: AbstractResource

This implementation returns the description's hash code.

Overrides:

hashCode in class AbstractResource

See Also:

Resource.getDescription()