文件工具类
类名：FileUtil
accept
/**
*/
FileUtil fileUtil = new FileUtil();
fileUtil.accept(File pathname);
list
/**
* 扫描目录下的文件
*
* @param path 路径
* @return 文件集合
*/
FileUtil.list(String path);
list
/**
* 扫描目录下的文件
*
* @param path 路径
* @param fileNamePattern 文件名 * 号
* @return 文件集合
*/
FileUtil.list(String path, String fileNamePattern);
list
/**
* 扫描目录下的文件
*
* @param path 路径
* @param filter 文件过滤
* @return 文件集合
*/
FileUtil.list(String path, FileFilter filter);
list
/**
* 扫描目录下的文件
*
* @param file 文件
* @return 文件集合
*/
FileUtil.list(File file);
list
/**
* 扫描目录下的文件
*
* @param file 文件
* @param fileNamePattern Spring AntPathMatcher 规则
* @return 文件集合
*/
FileUtil.list(File file, String fileNamePattern);
list
/**
* 扫描目录下的文件
*
* @param file 文件
* @param filter 文件过滤
* @return 文件集合
*/
FileUtil.list(File file, FileFilter filter);
getFileExtension
/**
* 获取文件后缀名
* @param fullName 文件全名
* @return {String}
*/
FileUtil.getFileExtension(String fullName);
getNameWithoutExtension
/**
* 获取文件名，去除后缀名
* @param file 文件
* @return {String}
*/
FileUtil.getNameWithoutExtension(String file);
getTempDirPath
/**
* Returns the path to the system temporary directory.
*
* @return the path to the system temporary directory.
*/
FileUtil.getTempDirPath();
getTempDir
/**
* Returns a {@link File} representing the system temporary directory.
*
* @return the system temporary directory.
*/
FileUtil.getTempDir();
readToString
/**
* Reads the contents of a file into a String.
* The file is always closed.
*
* @param file the file to read, must not be {@code null}
* @return the file contents, never {@code null}
*/
FileUtil.readToString(File file);
readToString
/**
* Reads the contents of a file into a String.
* The file is always closed.
*
* @param file the file to read, must not be {@code null}
* @param encoding the encoding to use, {@code null} means platform default
* @return the file contents, never {@code null}
*/
FileUtil.readToString(File file, Charset encoding);
readToByteArray
/**
* Reads the contents of a file into a String.
* The file is always closed.
*
* @param file the file to read, must not be {@code null}
* @return the file contents, never {@code null}
*/
FileUtil.readToByteArray(File file);
writeToFile
/**
* Writes a String to a file creating the file if it does not exist.
*
* @param file the file to write
* @param data the content to write to the file
*/
FileUtil.writeToFile(File file, String data);
writeToFile
/**
* Writes a String to a file creating the file if it does not exist.
*
* @param file the file to write
* @param data the content to write to the file
* @param append if {@code true}, then the String will be added to the
* end of the file rather than overwriting
*/
FileUtil.writeToFile(File file, String data, boolean append);
writeToFile
/**
* Writes a String to a file creating the file if it does not exist.
*
* @param file the file to write
* @param data the content to write to the file
* @param encoding the encoding to use, {@code null} means platform default
*/
FileUtil.writeToFile(File file, String data, Charset encoding);
writeToFile
/**
* Writes a String to a file creating the file if it does not exist.
*
* @param file the file to write
* @param data the content to write to the file
* @param encoding the encoding to use, {@code null} means platform default
* @param append if {@code true}, then the String will be added to the
* end of the file rather than overwriting
*/
FileUtil.writeToFile(File file, String data, Charset encoding, boolean append);
toFile
/**
* 转成file
* @param multipartFile MultipartFile
* @param file File
*/
FileUtil.toFile(MultipartFile multipartFile, File file);
toFile
/**
* 转成file
* @param in InputStream
* @param file File
*/
FileUtil.toFile(InputStream in, File file);
moveFile
/**
* Moves a file.
* <p>
* When the destination file is on another file system, do a "copy and delete".
*
* @param srcFile the file to be moved
* @param destFile the destination file
* @throws NullPointerException if source or destination is {@code null}
* @throws IOException if source or destination is invalid
* @throws IOException if an IO error occurs moving the file
*/
FileUtil.moveFile(File srcFile, File destFile);
deleteQuietly
/**
* Deletes a file, never throwing an exception. If file is a directory, delete it and all sub-directories.
* <p>
* The difference between File.delete() and this method are:
* <ul>
* <li>A directory to be deleted does not have to be empty.</li>
* <li>No exceptions are thrown when a file or directory cannot be deleted.</li>
* </ul>
*
* @param file file or directory to delete, can be {@code null}
* @return {@code true} if the file or directory was deleted, otherwise
* {@code false}
*/
FileUtil.deleteQuietly(File file);
copy
/**
* Copy the contents of the given input File to the given output File.
* @param in the file to copy from
* @param out the file to copy to
* @return the number of bytes copied
* @throws IOException in case of I/O errors
*/
FileUtil.copy(File in, File out);
copy
/**
* Copy the contents of the given byte array to the given output File.
* @param in the byte array to copy from
* @param out the file to copy to
* @throws IOException in case of I/O errors
*/
FileUtil.copy(byte[] in, File out);
copyToByteArray
/**
* Copy the contents of the given input File into a new byte array.
* @param in the file to copy from
* @return the new byte array that has been copied to
* @throws IOException in case of I/O errors
*/
FileUtil.copyToByteArray(File in);
copy
/**
* Copy the contents of the given InputStream to the given OutputStream.
* Closes both streams when done.
* @param in the stream to copy from
* @param out the stream to copy to
* @return the number of bytes copied
* @throws IOException in case of I/O errors
*/
FileUtil.copy(InputStream in, OutputStream out);
copy
/**
* Copy the contents of the given byte array to the given OutputStream.
* Closes the stream when done.
* @param in the byte array to copy from
* @param out the OutputStream to copy to
* @throws IOException in case of I/O errors
*/
FileUtil.copy(byte[] in, OutputStream out);
copyToByteArray
/**
* Copy the contents of the given InputStream into a new byte array.
* Closes the stream when done.
* @param in the stream to copy from (may be {@code null} or empty)
* @return the new byte array that has been copied to (possibly empty)
* @throws IOException in case of I/O errors
*/
FileUtil.copyToByteArray(InputStream in);
copy
/**
* Copy the contents of the given Reader to the given Writer.
* Closes both when done.
* @param in the Reader to copy from
* @param out the Writer to copy to
* @return the number of characters copied
* @throws IOException in case of I/O errors
*/
FileUtil.copy(Reader in, Writer out);
copy
/**
* Copy the contents of the given String to the given output Writer.
* Closes the writer when done.
* @param in the String to copy from
* @param out the Writer to copy to
* @throws IOException in case of I/O errors
*/
FileUtil.copy(String in, Writer out);
copyToString
/**
* Copy the contents of the given Reader into a String.
* Closes the reader when done.
* @param in the reader to copy from (may be {@code null} or empty)
* @return the String that has been copied to (possibly empty)
* @throws IOException in case of I/O errors
*/
FileUtil.copyToString(Reader in);