java.lang.Object
- org.springframework.core.io.AbstractResource
- - org.springframework.core.io.AbstractFileResolvingResource
  - - org.springframework.core.io.UrlResource
    - - org.springframework.core.io.FileUrlResource

所有已实现的接口:
InputStreamSource, Resource, WritableResource
```
public class FileUrlResource
extends UrlResource
implements WritableResource
```
Subclass of UrlResource which assumes file resolution, to the degree of implementing the WritableResource interface for it. This resource variant also caches resolved File handles from getFile().
This is the class resolved by DefaultResourceLoader for a "file:..." URL location, allowing a downcast to WritableResource for it.
Alternatively, for direct construction from a File handle or NIO Path, consider using FileSystemResource.
从以下版本开始:
5.0.2
作者:
Juergen Hoeller

构造器概要

构造器
构造器	说明
`FileUrlResource(String location)`	Create a new `FileUrlResource` based on the given file location, using the URL protocol "file".
`FileUrlResource(URL url)`	Create a new `FileUrlResource` based on the given URL object.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`Resource`	`createRelative(String relativePath)`	This implementation creates a `UrlResource`, delegating to `UrlResource.createRelativeURL(String)` for adapting the relative path.
`File`	`getFile()`	This implementation returns a File reference for the underlying URL/URI, provided that it refers to a file in the file system.
`OutputStream`	`getOutputStream()`	Return an `OutputStream` for the underlying resource, allowing to (over-)write its content.
`boolean`	`isWritable()`	Indicate whether the contents of this resource can be written via `WritableResource.getOutputStream()`.
`WritableByteChannel`	`writableChannel()`	Return a `WritableByteChannel`.

从类继承的方法 org.springframework.core.io.UrlResource
createRelativeURL, equals, getDescription, getFilename, getInputStream, getURI, getURL, hashCode, isFile

从类继承的方法 org.springframework.core.io.AbstractFileResolvingResource
contentLength, customizeConnection, customizeConnection, exists, getFile, getFileForLastModifiedCheck, isFile, isReadable, lastModified, readableChannel

从类继承的方法 org.springframework.core.io.AbstractResource
isOpen, toString

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.springframework.core.io.InputStreamSource
getInputStream

从接口继承的方法 org.springframework.core.io.Resource
contentLength, exists, getDescription, getFilename, getURI, getURL, isFile, isOpen, isReadable, lastModified, readableChannel

- 构造器详细资料
  - FileUrlResource
```
public FileUrlResource(URL url)
```
    Create a new FileUrlResource based on the given URL object.
    Note that this does not enforce "file" as URL protocol. If a protocol is known to be resolvable to a file, it is acceptable for this purpose.
    参数:
    url - a URL
    另请参阅:
    ResourceUtils.isFileURL(URL), getFile()
  - FileUrlResource
```
public FileUrlResource(String location)
                throws MalformedURLException
```
    Create a new FileUrlResource based on the given file location, using the URL protocol "file".
    The given parts will automatically get encoded if necessary.
    参数:
    location - the location (i.e. the file path within that protocol)
    抛出:
    MalformedURLException - if the given URL specification is not valid
    另请参阅:
    UrlResource(String, String), ResourceUtils.URL_PROTOCOL_FILE
- 方法详细资料
  - getFile
```
public File getFile()
             throws IOException
```
    从类复制的说明: UrlResource
    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 UrlResource
    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:
    ResourceUtils.getFile(java.net.URL, String)
  - isWritable
```
public boolean isWritable()
```
    从接口复制的说明: WritableResource
    Indicate whether the contents of this resource can be written via WritableResource.getOutputStream().
    Will be true for typical resource descriptors; note that actual content writing may still fail when attempted. However, a value of false is a definitive indication that the resource content cannot be modified.
    指定者:
    isWritable 在接口中 WritableResource
    另请参阅:
    WritableResource.getOutputStream(), Resource.isReadable()
  - getOutputStream
```
public OutputStream getOutputStream()
                             throws IOException
```
    从接口复制的说明: WritableResource
    Return an OutputStream for the underlying resource, allowing to (over-)write its content.
    指定者:
    getOutputStream 在接口中 WritableResource
    抛出:
    IOException - if the stream could not be opened
    另请参阅:
    InputStreamSource.getInputStream()
  - writableChannel
```
public WritableByteChannel writableChannel()
                                    throws IOException
```
    从接口复制的说明: WritableResource
    Return a WritableByteChannel.
    It is expected that each call creates a fresh channel.
    The default implementation returns Channels.newChannel(OutputStream) with the result of WritableResource.getOutputStream().
    指定者:
    writableChannel 在接口中 WritableResource
    返回:
    the byte channel for the underlying resource (must not be null)
    抛出:
    FileNotFoundException - if the underlying resource doesn't exist
    IOException - if the content channel could not be opened
    另请参阅:
    WritableResource.getOutputStream()
  - createRelative
```
public Resource createRelative(String relativePath)
                        throws MalformedURLException
```
    从类复制的说明: UrlResource
    This implementation creates a UrlResource, delegating to UrlResource.createRelativeURL(String) for adapting the relative path.
    指定者:
    createRelative 在接口中 Resource
    覆盖:
    createRelative 在类中 UrlResource
    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:
    UrlResource.createRelativeURL(String)

类 FileUrlResource

构造器概要

方法概要

从类继承的方法 org.springframework.core.io.UrlResource

从类继承的方法 org.springframework.core.io.AbstractFileResolvingResource

从类继承的方法 org.springframework.core.io.AbstractResource

从类继承的方法 java.lang.Object

从接口继承的方法 org.springframework.core.io.InputStreamSource

从接口继承的方法 org.springframework.core.io.Resource

构造器详细资料

FileUrlResource

FileUrlResource

方法详细资料

getFile

isWritable

getOutputStream

writableChannel

createRelative