FileUtil (mica-core 2.7.18.9 API)

java.lang.Object
- org.springframework.util.FileCopyUtils
- - net.dreamlu.mica.core.utils.FileUtil

public class FileUtil
extends org.springframework.util.FileCopyUtils

文件工具类

Author:: L.cm

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class FileUtil.TrueFilter
默认为true

Nested Classes
Modifier and Type	Class and Description
`static class`	`FileUtil.TrueFilter` 默认为true

Field Summary
- Fields inherited from class org.springframework.util.FileCopyUtils
  BUFFER_SIZE

Constructor Summary

Constructors
Constructor and Description

FileUtil()

Constructors
Constructor and Description
`FileUtil()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`deleteQuietly(File file)` Deletes a file, never throwing an exception.
`static String`	`getFileExtension(String fullName)` 获取文件后缀名 jpg
`static String`	`getFileExtensionWithDot(String fullName)` 获取文件后缀名 .jpg
`static String`	`getFilename(String path)` 获取文件后缀名
`static String`	`getPathWithoutExtension(String path)` 获取文件名，去除后缀名
`static File`	`getTempDir()` Returns a `File` representing the system temporary directory.
`static String`	`getTempDirPath()` Returns the path to the system temporary directory.
`static List<File>`	`list(File file)` 扫描目录下的文件
`static List<File>`	`list(File file, FileFilter filter)` 扫描目录下的文件
`static List<File>`	`list(File file, String... fileNamePatterns)` 扫描目录下的文件
`static List<File>`	`list(File file, String fileNamePattern)` 扫描目录下的文件
`static List<File>`	`list(String path)` 扫描目录下的文件
`static List<File>`	`list(String path, FileFilter filter)` 扫描目录下的文件
`static List<File>`	`list(String path, String fileNamePattern)` 扫描目录下的文件
`static void`	`moveFile(File srcFile, File destFile)` Moves a file.
`static List<String>`	`readLines(File file)` NIO 按行读取文件
`static List<String>`	`readLines(File file, Charset cs)` NIO 按行读取文件
`static List<String>`	`readLines(Path path)` NIO 按行读取文件
`static List<String>`	`readLines(Path path, Charset cs)` NIO 按行读取文件
`static List<String>`	`readLines(String path)` NIO 按行读取文件
`static List<String>`	`readLines(String path, Charset cs)` NIO 按行读取文件
`static byte[]`	`readToByteArray(File file)` Reads the contents of a file into a String.
`static String`	`readToString(File file)` Reads the contents of a file into a String.
`static String`	`readToString(File file, Charset encoding)` Reads the contents of a file into a String.
`static void`	`toFile(InputStream in, File file)` 转成file
`static void`	`toFile(org.springframework.web.multipart.MultipartFile multipartFile, File file)` 转成file
`static File`	`toTempDir(String subDirFile)` 拼接临时文件目录.
`static String`	`toTempDirPath(String subDirFile)` 拼接临时文件目录.
`static void`	`writeToFile(File file, String data)` Writes a String to a file creating the file if it does not exist.
`static void`	`writeToFile(File file, String data, boolean append)` Writes a String to a file creating the file if it does not exist.
`static void`	`writeToFile(File file, String data, Charset encoding)` Writes a String to a file creating the file if it does not exist.
`static void`	`writeToFile(File file, String data, Charset encoding, boolean append)` Writes a String to a file creating the file if it does not exist.

Methods inherited from class org.springframework.util.FileCopyUtils
copy, copy, copy, copy, copy, copy, copyToByteArray, copyToByteArray, copyToString

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

- Constructor Detail
  - FileUtil
```
public FileUtil()
```
- Method Detail
  - list
```
public static List<File> list(String path)
```
    扫描目录下的文件
    
    Parameters:
    
    path - 路径
    
    Returns:
    
    文件集合
  - list
```
public static List<File> list(String path,
                              String fileNamePattern)
```
    扫描目录下的文件
    
    Parameters:
    
    path - 路径
    
    fileNamePattern - 文件名 * 号
    
    Returns:
    
    文件集合
  - list
```
public static List<File> list(String path,
                              FileFilter filter)
```
    扫描目录下的文件
    
    Parameters:
    
    path - 路径
    
    filter - 文件过滤
    
    Returns:
    
    文件集合
  - list
```
public static List<File> list(File file)
```
    扫描目录下的文件
    
    Parameters:
    
    file - 文件
    
    Returns:
    
    文件集合
  - list
```
public static List<File> list(File file,
                              String fileNamePattern)
```
    扫描目录下的文件
    
    Parameters:
    
    file - 文件
    
    fileNamePattern - "xxx*", "*xxx", "*xxx*" and "xxx*yyy"
    
    Returns:
    
    文件集合
  - list
```
public static List<File> list(File file,
                              String... fileNamePatterns)
```
    扫描目录下的文件
    
    Parameters:
    
    file - 文件
    
    fileNamePatterns - "xxx*", "*xxx", "*xxx*" and "xxx*yyy"
    
    Returns:
    
    文件集合
  - list
```
public static List<File> list(File file,
                              FileFilter filter)
```
    扫描目录下的文件
    
    Parameters:
    
    file - 文件
    
    filter - 文件过滤
    
    Returns:
    
    文件集合
  - getFilename
```
@Nullable
public static String getFilename(@Nullable
                                           String path)
```
    获取文件后缀名
    
    Parameters:
    
    path - 文件路径
    
    Returns:
    
    {String}
  - getFileExtension
```
@Nullable
public static String getFileExtension(@Nullable
                                                String fullName)
```
    获取文件后缀名 jpg
    
    Parameters:
    
    fullName - 文件全名
    
    Returns:
    
    {String}
  - getFileExtensionWithDot
```
@Nullable
public static String getFileExtensionWithDot(@Nullable
                                                       String fullName)
```
    获取文件后缀名 .jpg
    
    Parameters:
    
    fullName - 文件全名
    
    Returns:
    
    {String}
  - getPathWithoutExtension
```
@Nullable
public static String getPathWithoutExtension(@Nullable
                                                       String path)
```
    获取文件名，去除后缀名
    
    Parameters:
    
    path - 文件
    
    Returns:
    
    {String}
  - getTempDirPath
```
public static String getTempDirPath()
```
    Returns the path to the system temporary directory.
    
    Returns:
    
    the path to the system temporary directory.
  - toTempDirPath
```
public static String toTempDirPath(String subDirFile)
```
    拼接临时文件目录.
    
    Returns:
    
    临时文件目录.
  - getTempDir
```
public static File getTempDir()
```
    Returns a File representing the system temporary directory.
    
    Returns:
    
    the system temporary directory.
  - toTempDir
```
public static File toTempDir(String subDirFile)
```
    拼接临时文件目录.
    
    Returns:
    
    the system temporary directory.
  - readToString
```
public static String readToString(File file)
```
    Reads the contents of a file into a String. The file is always closed.
    
    Parameters:
    
    file - the file to read, must not be null
    
    Returns:
    
    the file contents, never null
  - readToString
```
public static String readToString(File file,
                                  Charset encoding)
```
    Reads the contents of a file into a String. The file is always closed.
    
    Parameters:
    
    file - the file to read, must not be null
    
    encoding - the encoding to use, null means platform default
    
    Returns:
    
    the file contents, never null
  - readToByteArray
```
public static byte[] readToByteArray(File file)
```
    Reads the contents of a file into a String. The file is always closed.
    
    Parameters:
    
    file - the file to read, must not be null
    
    Returns:
    
    the file contents, never null
  - writeToFile
```
public static void writeToFile(File file,
                               String data)
```
    Writes a String to a file creating the file if it does not exist.
    
    Parameters:
    
    file - the file to write
    
    data - the content to write to the file
  - writeToFile
```
public static void writeToFile(File file,
                               String data,
                               boolean append)
```
    Writes a String to a file creating the file if it does not exist.
    
    Parameters:
    
    file - the file to write
    
    data - the content to write to the file
    
    append - if true, then the String will be added to the end of the file rather than overwriting
  - writeToFile
```
public static void writeToFile(File file,
                               String data,
                               Charset encoding)
```
    Writes a String to a file creating the file if it does not exist.
    
    Parameters:
    
    file - the file to write
    
    data - the content to write to the file
    
    encoding - the encoding to use, null means platform default
  - writeToFile
```
public static void writeToFile(File file,
                               String data,
                               Charset encoding,
                               boolean append)
```
    Writes a String to a file creating the file if it does not exist.
    
    Parameters:
    
    file - the file to write
    
    data - the content to write to the file
    
    encoding - the encoding to use, null means platform default
    
    append - if true, then the String will be added to the end of the file rather than overwriting
  - toFile
```
public static void toFile(org.springframework.web.multipart.MultipartFile multipartFile,
                          File file)
```
    转成file
    
    Parameters:
    
    multipartFile - MultipartFile
    
    file - File
  - toFile
```
public static void toFile(InputStream in,
                          File file)
```
    转成file
    
    Parameters:
    
    in - InputStream
    
    file - File
  - moveFile
```
public static void moveFile(File srcFile,
                            File destFile)
                     throws IOException
```
    Moves a file.
    When the destination file is on another file system, do a "copy and delete".
    
    Parameters:
    
    srcFile - the file to be moved
    
    destFile - the destination file
    
    Throws:
    
    NullPointerException - if source or destination is null
    
    IOException - if source or destination is invalid
    
    IOException - if an IO error occurs moving the file
  - deleteQuietly
```
public static boolean deleteQuietly(@Nullable
                                    File file)
```
    Deletes a file, never throwing an exception. If file is a directory, delete it and all sub-directories.
    The difference between File.delete() and this method are:
    - A directory to be deleted does not have to be empty.
    - No exceptions are thrown when a file or directory cannot be deleted.
    Parameters:
    
    file - file or directory to delete, can be null
    
    Returns:
    
    true if the file or directory was deleted, otherwise false
  - readLines
```
public static List<String> readLines(String path)
```
    NIO 按行读取文件
    
    Parameters:
    
    path - 文件路径
    
    Returns:
    
    行列表
  - readLines
```
public static List<String> readLines(File file)
```
    NIO 按行读取文件
    
    Parameters:
    
    file - 文件
    
    Returns:
    
    行列表
  - readLines
```
public static List<String> readLines(Path path)
```
    NIO 按行读取文件
    
    Parameters:
    
    path - 文件路径
    
    Returns:
    
    行列表
  - readLines
```
public static List<String> readLines(String path,
                                     Charset cs)
```
    NIO 按行读取文件
    
    Parameters:
    
    path - 文件路径
    
    cs - 字符集
    
    Returns:
    
    行列表
  - readLines
```
public static List<String> readLines(File file,
                                     Charset cs)
```
    NIO 按行读取文件
    
    Parameters:
    
    file - 文件
    
    cs - 字符集
    
    Returns:
    
    行列表
  - readLines
```
public static List<String> readLines(Path path,
                                     Charset cs)
```
    NIO 按行读取文件
    
    Parameters:
    
    path - 文件路径
    
    cs - 字符集
    
    Returns:
    
    行列表

Class FileUtil

Nested Class Summary

Field Summary

Fields inherited from class org.springframework.util.FileCopyUtils

Constructor Summary

Method Summary

Methods inherited from class org.springframework.util.FileCopyUtils

Methods inherited from class java.lang.Object

Constructor Detail

FileUtil

Method Detail

list

list

list

list

list

list

list

getFilename

getFileExtension

getFileExtensionWithDot

getPathWithoutExtension

getTempDirPath

toTempDirPath

getTempDir

toTempDir

readToString

readToString

readToByteArray

writeToFile

writeToFile

writeToFile

writeToFile

toFile

toFile

moveFile

deleteQuietly

readLines

readLines

readLines

readLines

readLines

readLines