程序包 com.alibaba.nacos.common.packagescan.resource

类 UrlResource

java.lang.Object

com.alibaba.nacos.common.packagescan.resource.AbstractResource

com.alibaba.nacos.common.packagescan.resource.AbstractFileResolvingResource

com.alibaba.nacos.common.packagescan.resource.UrlResource

所有已实现的接口:

InputStreamSource, Resource

直接已知子类:

FileUrlResource

public class UrlResource
extends AbstractFileResolvingResource

Copy from https://github.com/spring-projects/spring-framework.git, with less modifications 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

字段概要

字段

修饰符和类型	字段	说明
private java.net.URL	cleanedUrl	Cleaned URL (with normalized path), used for comparisons.
private java.net.URI	uri	Original URI, if available; used for URI and File access.
private java.net.URL	url	Original URL, used for actual access.

构造器概要

构造器

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

方法概要

修饰符和类型	方法	说明
Resource	createRelative(java.lang.String relativePath)	This implementation creates a UrlResource, delegating to createRelativeUrl(String) for adapting the relative path.
protected java.net.URL	createRelativeUrl(java.lang.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(java.lang.Object other)	This implementation compares the underlying URL references.
private java.net.URL	getCleanedUrl()	Lazily determine a cleaned URL for the given original URL.
private static java.net.URL	getCleanedUrl(java.net.URL originalUrl, java.lang.String originalPath)	Determine a cleaned URL for the given original URL.
java.lang.String	getDescription()	This implementation returns a description that includes the URL.
java.io.File	getFile()	This implementation returns a File reference for the underlying URL/URI, provided that it refers to a file in the file system.
java.lang.String	getFilename()	This implementation returns the name of the file that this URL refers to.
java.io.InputStream	getInputStream()	This implementation opens an InputStream for the given URL.
java.net.URI	getUri()	This implementation returns the underlying URI directly, if possible.
java.net.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 com.alibaba.nacos.common.packagescan.resource.AbstractFileResolvingResource

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

从类继承的方法 com.alibaba.nacos.common.packagescan.resource.AbstractResource

isOpen, toString

从类继承的方法 java.lang.Object

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

字段详细资料

uri

private final java.net.URI uri

Original URI, if available; used for URI and File access.

url

private final java.net.URL url

Original URL, used for actual access.

cleanedUrl

private volatile java.net.URL cleanedUrl

Cleaned URL (with normalized path), used for comparisons.

构造器详细资料

UrlResource

public UrlResource(java.net.URI uri)
            throws java.net.MalformedURLException

Create a new UrlResource based on the given URI object.

参数:

uri - a URI

抛出:

java.net.MalformedURLException - if the given URL path is not valid

从以下版本开始:

2.5

UrlResource

public UrlResource(java.net.URL url)

Create a new UrlResource based on the given URL object.

参数:

url - a URL

UrlResource

public UrlResource(java.lang.String path)
            throws java.net.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:

java.net.MalformedURLException - if the given URL path is not valid

另请参阅:

URL(String)

UrlResource

public UrlResource(java.lang.String protocol,
                   java.lang.String location)
            throws java.net.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:

java.net.MalformedURLException - if the given URL specification is not valid

另请参阅:

URI(String, String, String)

UrlResource

public UrlResource(java.lang.String protocol,
                   java.lang.String location,
                   java.lang.String fragment)
            throws java.net.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:

java.net.MalformedURLException - if the given URL specification is not valid

另请参阅:

URI(String, String, String)

方法详细资料

getCleanedUrl

private static java.net.URL getCleanedUrl(java.net.URL originalUrl,
                                          java.lang.String originalPath)

Determine a cleaned URL for the given original URL.

参数:

originalUrl - the original URL

originalPath - the original URL path

返回:

the cleaned URL (possibly the original URL as-is)

另请参阅:

StringUtils.cleanPath(java.lang.String)

getCleanedUrl

private java.net.URL getCleanedUrl()

Lazily determine a cleaned URL for the given original URL.

另请参阅:

getCleanedUrl(URL, String)

getInputStream

public java.io.InputStream getInputStream()
                                   throws java.io.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:

java.io.FileNotFoundException - if the underlying resource does not exist

java.io.IOException - if the content stream could not be opened

另请参阅:

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

getUrl

public java.net.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 java.net.URI getUri()
                    throws java.io.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:

java.io.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 java.io.File getFile()
                     throws java.io.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:

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

java.io.IOException - in case of general resolution/reading failures

另请参阅:

ResourceUtils.getFile(URL, String)

createRelative

public Resource createRelative(java.lang.String relativePath)
                        throws java.net.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:

java.net.MalformedURLException

另请参阅:

createRelativeUrl(String)

createRelativeUrl

protected java.net.URL createRelativeUrl(java.lang.String relativePath)
                                  throws java.net.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:

java.net.MalformedURLException

从以下版本开始:

5.2

另请参阅:

createRelative(String)

getFilename

public java.lang.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 java.lang.String getDescription()

This implementation returns a description that includes the URL.

另请参阅:

Object.toString()

equals

public boolean equals(java.lang.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()