org.frameworkset.util

类 ResourceUtils

java.lang.Object

org.frameworkset.util.ResourceUtils

public class ResourceUtils
extends java.lang.Object

Title: ResourceUtils.java

Description:

bboss workgroup

Copyright (c) 2008

字段概要

字段

限定符和类型	字段和说明
static java.lang.String	CLASSPATH_URL_PREFIX Pseudo URL prefix for loading from the class path: "classpath:"
static java.lang.String	FILE_URL_PREFIX URL prefix for loading from the file system: "file:"
static java.lang.String	JAR_URL_SEPARATOR Separator between JAR URL and file path within the JAR
static java.lang.String	URL_PROTOCOL_CODE_SOURCE URL protocol for an entry from an OC4J jar file: "code-source"
static java.lang.String	URL_PROTOCOL_FILE URL protocol for a file in the file system: "file"
static java.lang.String	URL_PROTOCOL_JAR URL protocol for an entry from a jar file: "jar"
static java.lang.String	URL_PROTOCOL_VFSZIP URL protocol for an entry from a JBoss jar file: "vfszip"
static java.lang.String	URL_PROTOCOL_WSJAR URL protocol for an entry from a WebSphere jar file: "wsjar"
static java.lang.String	URL_PROTOCOL_ZIP URL protocol for an entry from a zip file: "zip"

构造器概要

构造器

构造器和说明
ResourceUtils()

方法概要

限定符和类型	方法和说明
static java.net.URL	extractJarFileURL(java.net.URL jarUrl) Extract the URL for the actual jar file from the given URL (which may point to a resource in a jar file or to a jar file itself).
static java.io.File	getFile(java.lang.String resourceLocation) Resolve the given resource location to a java.io.File, i.e.
static java.io.File	getFile(java.net.URI resourceUri) Resolve the given resource URI to a java.io.File, i.e. to a file in the file system.
static java.io.File	getFile(java.net.URI resourceUri, java.lang.String description) Resolve the given resource URI to a java.io.File, i.e. to a file in the file system.
static java.io.File	getFile(java.net.URL resourceUrl) Resolve the given resource URL to a java.io.File, i.e. to a file in the file system.
static java.io.File	getFile(java.net.URL resourceUrl, java.lang.String description) Resolve the given resource URL to a java.io.File, i.e. to a file in the file system.
static java.net.URL	getFileURL(java.lang.String file)
static java.net.URL	getFileURL(java.lang.String baseDir, java.lang.String file)
static java.lang.String	getRealPath(java.lang.String contextPath, java.lang.String path)
static java.net.URL	getURL(java.lang.String resourceLocation) Resolve the given resource location to a java.net.URL.
static boolean	isJarURL(java.net.URL url) Determine whether the given URL points to a resource in a jar file, that is, has protocol "jar", "zip", "wsjar" or "code-source".
static boolean	isUrl(java.lang.String resourceLocation) Return whether the given resource location is a URL: either a special "classpath" pseudo URL or a standard URL.
static java.net.URI	toURI(java.lang.String location) Create a URI instance for the given location String, replacing spaces with "%20" quotes first.
static java.net.URI	toURI(java.net.URL url) Create a URI instance for the given URL, replacing spaces with "%20" quotes first.

从类继承的方法 java.lang.Object

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

字段详细资料

CLASSPATH_URL_PREFIX

public static final java.lang.String CLASSPATH_URL_PREFIX

Pseudo URL prefix for loading from the class path: "classpath:"

另请参阅:

常量字段值

FILE_URL_PREFIX

public static final java.lang.String FILE_URL_PREFIX

URL prefix for loading from the file system: "file:"

另请参阅:

常量字段值

URL_PROTOCOL_FILE

public static final java.lang.String URL_PROTOCOL_FILE

URL protocol for a file in the file system: "file"

另请参阅:

常量字段值

URL_PROTOCOL_JAR

public static final java.lang.String URL_PROTOCOL_JAR

URL protocol for an entry from a jar file: "jar"

另请参阅:

常量字段值

URL_PROTOCOL_ZIP

public static final java.lang.String URL_PROTOCOL_ZIP

URL protocol for an entry from a zip file: "zip"

另请参阅:

常量字段值

URL_PROTOCOL_VFSZIP

public static final java.lang.String URL_PROTOCOL_VFSZIP

URL protocol for an entry from a JBoss jar file: "vfszip"

另请参阅:

常量字段值

URL_PROTOCOL_WSJAR

public static final java.lang.String URL_PROTOCOL_WSJAR

URL protocol for an entry from a WebSphere jar file: "wsjar"

另请参阅:

常量字段值

URL_PROTOCOL_CODE_SOURCE

public static final java.lang.String URL_PROTOCOL_CODE_SOURCE

URL protocol for an entry from an OC4J jar file: "code-source"

另请参阅:

常量字段值

JAR_URL_SEPARATOR

public static final java.lang.String JAR_URL_SEPARATOR

Separator between JAR URL and file path within the JAR

另请参阅:

常量字段值

构造器详细资料

ResourceUtils

public ResourceUtils()

方法详细资料

isUrl

public static boolean isUrl(java.lang.String resourceLocation)

Return whether the given resource location is a URL: either a special "classpath" pseudo URL or a standard URL.

参数:

resourceLocation - the location String to check

返回:

whether the location qualifies as a URL

另请参阅:

CLASSPATH_URL_PREFIX, URL

getURL

public static java.net.URL getURL(java.lang.String resourceLocation)
                           throws java.io.FileNotFoundException

Resolve the given resource location to a java.net.URL.

Does not check whether the URL actually exists; simply returns the URL that the given location would correspond to.

参数:

resourceLocation - the resource location to resolve: either a "classpath:" pseudo URL, a "file:" URL, or a plain file path

返回:

a corresponding URL object

抛出:

java.io.FileNotFoundException - if the resource cannot be resolved to a URL

getFile

public static java.io.File getFile(java.lang.String resourceLocation)
                            throws java.io.FileNotFoundException

Resolve the given resource location to a java.io.File, i.e. to a file in the file system.

Does not check whether the fil actually exists; simply returns the File that the given location would correspond to.

参数:

resourceLocation - the resource location to resolve: either a "classpath:" pseudo URL, a "file:" URL, or a plain file path

返回:

a corresponding File object

抛出:

java.io.FileNotFoundException - if the resource cannot be resolved to a file in the file system

getFileURL

public static java.net.URL getFileURL(java.lang.String file)

getRealPath

public static java.lang.String getRealPath(java.lang.String contextPath,
                                           java.lang.String path)

getFileURL

public static java.net.URL getFileURL(java.lang.String baseDir,
                                      java.lang.String file)

getFile

public static java.io.File getFile(java.net.URL resourceUrl)
                            throws java.io.FileNotFoundException

Resolve the given resource URL to a java.io.File, i.e. to a file in the file system.

参数:

resourceUrl - the resource URL to resolve

返回:

a corresponding File object

抛出:

java.io.FileNotFoundException - if the URL cannot be resolved to a file in the file system

getFile

public static java.io.File getFile(java.net.URL resourceUrl,
                                   java.lang.String description)
                            throws java.io.FileNotFoundException

Resolve the given resource URL to a java.io.File, i.e. to a file in the file system.

参数:

resourceUrl - the resource URL to resolve

description - a description of the original resource that the URL was created for (for example, a class path location)

返回:

a corresponding File object

抛出:

java.io.FileNotFoundException - if the URL cannot be resolved to a file in the file system

getFile

public static java.io.File getFile(java.net.URI resourceUri)
                            throws java.io.FileNotFoundException

Resolve the given resource URI to a java.io.File, i.e. to a file in the file system.

参数:

resourceUri - the resource URI to resolve

返回:

a corresponding File object

抛出:

java.io.FileNotFoundException - if the URL cannot be resolved to a file in the file system

getFile

public static java.io.File getFile(java.net.URI resourceUri,
                                   java.lang.String description)
                            throws java.io.FileNotFoundException

Resolve the given resource URI to a java.io.File, i.e. to a file in the file system.

参数:

resourceUri - the resource URI to resolve

description - a description of the original resource that the URI was created for (for example, a class path location)

返回:

a corresponding File object

抛出:

java.io.FileNotFoundException - if the URL cannot be resolved to a file in the file system

isJarURL

public static boolean isJarURL(java.net.URL url)

Determine whether the given URL points to a resource in a jar file, that is, has protocol "jar", "zip", "wsjar" or "code-source".

"zip" and "wsjar" are used by BEA WebLogic Server and IBM WebSphere, respectively, but can be treated like jar files. The same applies to "code-source" URLs on Oracle OC4J, provided that the path contains a jar separator.

参数:

url - the URL to check

返回:

whether the URL has been identified as a JAR URL

extractJarFileURL

public static java.net.URL extractJarFileURL(java.net.URL jarUrl)
                                      throws java.net.MalformedURLException

Extract the URL for the actual jar file from the given URL (which may point to a resource in a jar file or to a jar file itself).

参数:

jarUrl - the original URL

返回:

the URL for the actual jar file

抛出:

java.net.MalformedURLException - if no valid jar file URL could be extracted

toURI

public static java.net.URI toURI(java.net.URL url)
                          throws java.net.URISyntaxException

Create a URI instance for the given URL, replacing spaces with "%20" quotes first.

Furthermore, this method works on JDK 1.4 as well, in contrast to the URL.toURI() method.

参数:

url - the URL to convert into a URI instance

返回:

the URI instance

抛出:

java.net.URISyntaxException - if the URL wasn't a valid URI

另请参阅:

URL.toURI()

toURI

public static java.net.URI toURI(java.lang.String location)
                          throws java.net.URISyntaxException

Create a URI instance for the given location String, replacing spaces with "%20" quotes first.

参数:

location - the location String to convert into a URI instance

返回:

the URI instance

抛出:

java.net.URISyntaxException - if the location wasn't a valid URI