com.jn.langx.io.resource

类 ClassPathResource

java.lang.Object

com.jn.langx.io.resource.AbstractResource<T>

com.jn.langx.io.resource.AbstractLocatableResource<URL>

com.jn.langx.io.resource.ClassPathResource

所有已实现的接口:

Locatable, Resource<URL>, Urlable

public class ClassPathResource
extends AbstractLocatableResource<URL>

classpath:/xx/yy/zz classpath:xx/yy/zz

字段概要

字段

限定符和类型	字段和说明
static String	PREFIX

构造器概要

构造器

构造器和说明
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.

方法概要

限定符和类型	方法和说明
long	contentLength() Determine the content length for this resource.
boolean	equals(Object obj)
boolean	exists() Determine whether this resource actually exists in physical form.
String	getAbsolutePath()
ClassLoader	getClassLoader()
InputStream	getInputStream() Return an InputStream for the content of an underlying resource.
URL	getRealResource()
URL	getUrl() This implementation returns a URL for the underlying class path resource, if available.
URL	getUrlOrNull()
int	hashCode()
protected URL	resolveURL()
String	toString()

从类继承的方法 com.jn.langx.io.resource.AbstractLocatableResource

getLocation, getPath, getPrefix, setLocation, setLocation

从类继承的方法 com.jn.langx.io.resource.AbstractResource

isReadable, readableChannel

从类继承的方法 java.lang.Object

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

字段详细资料

PREFIX

public static final String PREFIX

另请参阅:

常量字段值

构造器详细资料

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.

参数:

path - the absolute path within the class path

另请参阅:

ClassLoader.getResourceAsStream(String)

ClassPathResource

public ClassPathResource(String path,
                         @Nullable
                         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.

参数:

path - the absolute path within the classpath

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

另请参阅:

ClassLoader.getResourceAsStream(String)

ClassPathResource

public ClassPathResource(String path,
                         @Nullable
                         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.

参数:

path - relative or absolute path within the class path

clazz - the class to load resources with

另请参阅:

Class.getResourceAsStream(java.lang.String)

方法详细资料

getAbsolutePath

public String getAbsolutePath()

getRealResource

public URL getRealResource()

getUrl

public URL getUrl()
           throws IOException

This implementation returns a URL for the underlying class path resource, if available.

抛出:

IOException

另请参阅:

ClassLoader.getResource(String), Class.getResource(String)

exists

public boolean exists()

从接口复制的说明: Resource

Determine whether this resource actually exists in physical form.

This method performs a definitive existence check, whereas the existence of a Resource handle only guarantees a valid descriptor handle.

指定者:

exists 在接口中 Resource<URL>

覆盖:

exists 在类中 AbstractResource<URL>

contentLength

public long contentLength()

从接口复制的说明: Resource

Determine the content length for this resource.

getClassLoader

public final ClassLoader getClassLoader()

resolveURL

protected URL resolveURL()

getInputStream

public InputStream getInputStream()
                           throws IOException

从接口复制的说明: Resource

Return an InputStream for the content of an underlying resource.

It is expected that each call creates a fresh stream.

This requirement is particularly important when you consider an API such as JavaMail, which needs to be able to read the stream multiple times when creating mail attachments. For such a use case, it is required that each getInputStream() call returns a fresh stream.

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

toString

public String toString()

覆盖:

toString 在类中 AbstractLocatableResource<URL>

equals

public boolean equals(Object obj)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

getUrlOrNull

public URL getUrlOrNull()