cn.sexycode.util.core.io

类 UrlResource

java.lang.Object

cn.sexycode.util.core.io.AbstractResource

cn.sexycode.util.core.io.AbstractFileResolvingResource

cn.sexycode.util.core.io.UrlResource

所有已实现的接口:

InputStreamSource, Resource

直接已知子类:

FileUrlResource

public class UrlResource
extends AbstractFileResolvingResource

Resource implementation for java.net.URL locators. Supports resolution as a URL and also as a File in case of the "file:" protocol.

从以下版本开始:

28.12.2003

作者:

Juergen Hoeller

另请参阅:

URL

构造器概要

构造器

构造器和说明
UrlResource(String path) Create a new UrlResource based on a URL path.
UrlResource(String protocol, String location) Create a new UrlResource based on a URI specification.
UrlResource(String protocol, String location, String fragment) Create a new UrlResource based on a URI specification.
UrlResource(URI uri) Create a new UrlResource based on the given URI object.
UrlResource(URL url) Create a new UrlResource based on the given URL object.

方法概要

限定符和类型	方法和说明
Resource	createRelative(String relativePath) This implementation creates a UrlResource, delegating to createRelativeURL(String) for adapting the relative path.
protected URL	createRelativeURL(String relativePath) This delegate creates a java.net.URL, applying the given path relative to the path of the underlying URL of this resource descriptor.
boolean	equals(Object other) This implementation compares the underlying URL references.
String	getDescription() This implementation returns a description that includes the URL.
File	getFile() This implementation returns a File reference for the underlying URL/URI, provided that it refers to a file in the file system.
String	getFilename() This implementation returns the name of the file that this URL refers to.
InputStream	getInputStream() This implementation opens an InputStream for the given URL.
URI	getURI() This implementation returns the underlying URI directly, if possible.
URL	getURL() This implementation returns the underlying URL reference.
int	hashCode() This implementation returns the hash code of the underlying URL reference.
boolean	isFile() This implementation always returns false.

从类继承的方法 cn.sexycode.util.core.io.AbstractFileResolvingResource

contentLength, customizeConnection, customizeConnection, exists, getFile, getFileForLastModifiedCheck, isFile, isReadable, lastModified, readableChannel

从类继承的方法 cn.sexycode.util.core.io.AbstractResource

isOpen, toString

从类继承的方法 java.lang.Object

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

构造器详细资料

UrlResource

public UrlResource(URI uri)
            throws MalformedURLException

Create a new UrlResource based on the given URI object.

参数:

uri - a URI

抛出:

MalformedURLException - if the given URL path is not valid

从以下版本开始:

2.5

UrlResource

public UrlResource(URL url)

Create a new UrlResource based on the given URL object.

参数:

url - a URL

UrlResource

public UrlResource(String path)
            throws MalformedURLException

Create a new UrlResource based on a URL path.

Note: The given path needs to be pre-encoded if necessary.

参数:

path - a URL path

抛出:

MalformedURLException - if the given URL path is not valid

另请参阅:

URL.URL(String)

UrlResource

public UrlResource(String protocol,
                   String location)
            throws MalformedURLException

Create a new UrlResource based on a URI specification.

The given parts will automatically get encoded if necessary.

参数:

protocol - the URL protocol to use (e.g. "jar" or "file" - without colon); also known as "scheme"

location - the location (e.g. the file path within that protocol); also known as "scheme-specific part"

抛出:

MalformedURLException - if the given URL specification is not valid

另请参阅:

URI.URI(String, String, String)

UrlResource

public UrlResource(String protocol,
                   String location,
                   String fragment)
            throws MalformedURLException

Create a new UrlResource based on a URI specification.

The given parts will automatically get encoded if necessary.

参数:

protocol - the URL protocol to use (e.g. "jar" or "file" - without colon); also known as "scheme"

location - the location (e.g. the file path within that protocol); also known as "scheme-specific part"

fragment - the fragment within that location (e.g. anchor on an HTML page, as following after a "#" separator)

抛出:

MalformedURLException - if the given URL specification is not valid

另请参阅:

URI.URI(String, String, String)

方法详细资料

getInputStream

public InputStream getInputStream()
                           throws IOException

This implementation opens an InputStream for the given URL.

It sets the useCaches flag to false, mainly to avoid jar file locking on Windows.

返回:

the input stream for the underlying resource (must not be null)

抛出:

FileNotFoundException - if the underlying resource doesn't exist

IOException - if the content stream could not be opened

另请参阅:

URL.openConnection(), URLConnection.setUseCaches(boolean), URLConnection.getInputStream()

getURL

public URL getURL()

This implementation returns the underlying URL reference.

指定者:

getURL 在接口中 Resource

覆盖:

getURL 在类中 AbstractResource

getURI

public URI getURI()
           throws IOException

This implementation returns the underlying URI directly, if possible.

指定者:

getURI 在接口中 Resource

覆盖:

getURI 在类中 AbstractResource

抛出:

IOException - if the resource cannot be resolved as URI, i.e. if the resource is not available as descriptor

isFile

public boolean isFile()

从类复制的说明: AbstractResource

This implementation always returns false.

指定者:

isFile 在接口中 Resource

覆盖:

isFile 在类中 AbstractFileResolvingResource

另请参阅:

Resource.getFile()

getFile

public File getFile()
             throws IOException

This implementation returns a File reference for the underlying URL/URI, provided that it refers to a file in the file system.

指定者:

getFile 在接口中 Resource

覆盖:

getFile 在类中 AbstractFileResolvingResource

抛出:

FileNotFoundException - if the resource cannot be resolved as absolute file path, i.e. if the resource is not available in a file system

IOException - in case of general resolution/reading failures

另请参阅:

org.springframework.util.ResourceUtils#getFile(URL, String)

createRelative

public Resource createRelative(String relativePath)
                        throws MalformedURLException

This implementation creates a UrlResource, delegating to createRelativeURL(String) for adapting the relative path.

指定者:

createRelative 在接口中 Resource

覆盖:

createRelative 在类中 AbstractResource

参数:

relativePath - the relative path (relative to this resource)

返回:

the resource handle for the relative resource

抛出:

MalformedURLException

另请参阅:

createRelativeURL(String)

createRelativeURL

protected URL createRelativeURL(String relativePath)
                         throws MalformedURLException

This delegate creates a java.net.URL, applying the given path relative to the path of the underlying URL of this resource descriptor. A leading slash will get dropped; a "#" symbol will get encoded.

抛出:

MalformedURLException

从以下版本开始:

5.2

另请参阅:

createRelative(String), URL.URL(URL, String)

getFilename

public String getFilename()

This implementation returns the name of the file that this URL refers to.

指定者:

getFilename 在接口中 Resource

覆盖:

getFilename 在类中 AbstractResource

另请参阅:

URL.getPath()

getDescription

public String getDescription()

This implementation returns a description that includes the URL.

另请参阅:

Object.toString()

equals

public boolean equals(Object other)

This implementation compares the underlying URL references.

覆盖:

equals 在类中 AbstractResource

另请参阅:

Resource.getDescription()

hashCode

public int hashCode()

This implementation returns the hash code of the underlying URL reference.

覆盖:

hashCode 在类中 AbstractResource

另请参阅:

Resource.getDescription()