URLFile (sorm-码云(gitee.com))

java.lang.Object
- java.io.File
- - sf.tools.URLFile

All Implemented Interfaces:

Serializable, Comparable<File>
```
public class URLFile
extends File
```
习惯用File来进行资源的IO操作。但实际上Java对资源的访问定位基本上是采用URL方式来做的。
File方式的好处：File对象可以很方便的进行读写操作 URL方式的好处：可以以描述zip/jar包中的文件，以及位于网络上的资源文件。虽然这些文件只能读不能写，但URL对象却是是唯一能完整描述各种资源定位的唯一手段。
这个设计思路上的差异随着JEF的变迁日益突出。JEF最初试图封装出一种可读写的资源统一API，（以File为主）。但是随后又碰到各种复杂的资源定位路径的问题，最后越搞越复杂。
这个类就是当初试图让URL类的资源向File类靠拢而设计的。不管怎么说，这个类至少起到了一个本地缓存的作用。或许是今后对统一资源定位抽象设计进行改善的一个方法。

Author:

See Also:

Serialized Form

Field Summary
- Fields inherited from class java.io.File
  pathSeparator, pathSeparatorChar, separator, separatorChar

Constructor Summary

Constructors
Constructor and Description

URLFile(URI uri)

URLFile(URL url)

Constructors
Constructor and Description
`URLFile(URI uri)`
`URLFile(URL url)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`canRead()`
`boolean`	`canWrite()`
`int`	`compareTo(File pathname)`
`boolean`	`createNewFile()`
`boolean`	`delete()`
`void`	`deleteOnExit()`
`boolean`	`equals(Object obj)`
`boolean`	`exists()`
`File`	`getAbsoluteFile()`
`String`	`getAbsolutePath()`
`File`	`getCanonicalFile()`
`String`	`getCanonicalPath()`
`FileInputStream`	`getInputStream()`
`File`	`getLocalFile()` 返回本地文件，只有当`isLocalFile()`=true时才能使用
`String`	`getName()`
`String`	`getParent()`
`File`	`getParentFile()`
`String`	`getPath()`
`File`	`getZipContainer()`
`String`	`getZipEntryPath()`
`int`	`hashCode()`
`boolean`	`isAbsolute()`
`boolean`	`isDirectory()`
`boolean`	`isFile()`
`boolean`	`isHidden()`
`boolean`	`isLocalFile()` 是否一个本地文件
`boolean`	`isZipFile()`
`long`	`lastModified()`
`long`	`length()`
`String[]`	`list()`
`String[]`	`list(FilenameFilter filter)`
`File[]`	`listFiles()`
`File[]`	`listFiles(FileFilter filter)`
`File[]`	`listFiles(FilenameFilter filter)`
`boolean`	`mkdir()`
`boolean`	`mkdirs()`
`boolean`	`renameTo(File dest)`
`boolean`	`setLastModified(long time)`
`boolean`	`setReadOnly()`
`String`	`toString()`
`URI`	`toURI()`
`URL`	`toURL()`

Methods inherited from class java.io.File
canExecute, createTempFile, createTempFile, getFreeSpace, getTotalSpace, getUsableSpace, listRoots, setExecutable, setExecutable, setReadable, setReadable, setWritable, setWritable, toPath

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - URLFile
```
public URLFile(URI uri)
```
  - URLFile
```
public URLFile(URL url)
```
- Method Detail
  - isLocalFile
```
public boolean isLocalFile()
```
    是否一个本地文件
    
    Returns:
  - getLocalFile
```
public File getLocalFile()
```
    返回本地文件，只有当isLocalFile()=true时才能使用
    
    Returns:
  - getInputStream
```
public FileInputStream getInputStream()
                               throws IOException
```
    Throws:
    
    IOException
  - getName
```
public String getName()
```
    Overrides:
    
    getName in class File
  - getParent
```
public String getParent()
```
    Overrides:
    
    getParent in class File
  - getParentFile
```
public File getParentFile()
```
    Overrides:
    
    getParentFile in class File
  - getPath
```
public String getPath()
```
    Overrides:
    
    getPath in class File
  - isAbsolute
```
public boolean isAbsolute()
```
    Overrides:
    
    isAbsolute in class File
  - getAbsolutePath
```
public String getAbsolutePath()
```
    Overrides:
    
    getAbsolutePath in class File
  - getAbsoluteFile
```
public File getAbsoluteFile()
```
    Overrides:
    
    getAbsoluteFile in class File
  - getCanonicalPath
```
public String getCanonicalPath()
                        throws IOException
```
    Overrides:
    
    getCanonicalPath in class File
    
    Throws:
    
    IOException
  - getCanonicalFile
```
public File getCanonicalFile()
                      throws IOException
```
    Overrides:
    
    getCanonicalFile in class File
    
    Throws:
    
    IOException
  - toURL
```
public URL toURL()
          throws MalformedURLException
```
    Overrides:
    
    toURL in class File
    
    Throws:
    
    MalformedURLException
  - toURI
```
public URI toURI()
```
    Overrides:
    
    toURI in class File
  - canRead
```
public boolean canRead()
```
    Overrides:
    
    canRead in class File
  - canWrite
```
public boolean canWrite()
```
    Overrides:
    
    canWrite in class File
  - exists
```
public boolean exists()
```
    Overrides:
    
    exists in class File
  - isDirectory
```
public boolean isDirectory()
```
    Overrides:
    
    isDirectory in class File
  - isFile
```
public boolean isFile()
```
    Overrides:
    
    isFile in class File
  - isHidden
```
public boolean isHidden()
```
    Overrides:
    
    isHidden in class File
  - lastModified
```
public long lastModified()
```
    Overrides:
    
    lastModified in class File
  - isZipFile
```
public boolean isZipFile()
```
  - getZipContainer
```
public File getZipContainer()
```
  - getZipEntryPath
```
public String getZipEntryPath()
```
  - length
```
public long length()
```
    Overrides:
    
    length in class File
  - createNewFile
```
public boolean createNewFile()
                      throws IOException
```
    Overrides:
    
    createNewFile in class File
    
    Throws:
    
    IOException
  - delete
```
public boolean delete()
```
    Overrides:
    
    delete in class File
  - deleteOnExit
```
public void deleteOnExit()
```
    Overrides:
    
    deleteOnExit in class File
  - list
```
public String[] list()
```
    Overrides:
    
    list in class File
  - list
```
public String[] list(FilenameFilter filter)
```
    Overrides:
    
    list in class File
  - listFiles
```
public File[] listFiles()
```
    Overrides:
    
    listFiles in class File
  - listFiles
```
public File[] listFiles(FilenameFilter filter)
```
    Overrides:
    
    listFiles in class File
  - listFiles
```
public File[] listFiles(FileFilter filter)
```
    Overrides:
    
    listFiles in class File
  - mkdir
```
public boolean mkdir()
```
    Overrides:
    
    mkdir in class File
  - mkdirs
```
public boolean mkdirs()
```
    Overrides:
    
    mkdirs in class File
  - renameTo
```
public boolean renameTo(File dest)
```
    Overrides:
    
    renameTo in class File
  - setLastModified
```
public boolean setLastModified(long time)
```
    Overrides:
    
    setLastModified in class File
  - setReadOnly
```
public boolean setReadOnly()
```
    Overrides:
    
    setReadOnly in class File
  - compareTo
```
public int compareTo(File pathname)
```
    Specified by:
    
    compareTo in interface Comparable<File>
    
    Overrides:
    
    compareTo in class File
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class File
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class File
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class File

Class URLFile

Field Summary

Fields inherited from class java.io.File

Constructor Summary

Method Summary

Methods inherited from class java.io.File

Methods inherited from class java.lang.Object

Constructor Detail

URLFile

URLFile

Method Detail

isLocalFile

getLocalFile

getInputStream

getName

getParent

getParentFile

getPath

isAbsolute

getAbsolutePath

getAbsoluteFile

getCanonicalPath

getCanonicalFile

toURL

toURI

canRead

canWrite

exists

isDirectory

isFile

isHidden

lastModified

isZipFile

getZipContainer

getZipEntryPath

length

createNewFile

delete

deleteOnExit

list

list

listFiles

listFiles

listFiles

mkdir

mkdirs

renameTo

setLastModified

setReadOnly

compareTo

equals

hashCode

toString