com.alipay.api.internal.util.file

类 FileUtils

java.lang.Object

com.alipay.api.internal.util.file.FileUtils

public class FileUtils
extends Object

构造器概要

构造器

构造器和说明
FileUtils()

方法概要

限定符和类型	方法和说明
static FileInputStream	openInputStream(File file) Opens a FileInputStream for the specified file, providing better error messages than simply calling new FileInputStream(file).
static String	readFileToString(File file) 已过时。 2.5 use readFileToString(File, Charset) instead
static String	readFileToString(File file, Charset encoding) Reads the contents of a file into a String.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

FileUtils

public FileUtils()

方法详细资料

readFileToString

@Deprecated
public static String readFileToString(File file)
                                           throws IOException

已过时。 2.5 use readFileToString(File, Charset) instead

Reads the contents of a file into a String using the default encoding for the VM. The file is always closed.

参数:

file - the file to read, must not be null

返回:

the file contents, never null

抛出:

IOException - in case of an I/O error

从以下版本开始:

1.3.1

readFileToString

public static String readFileToString(File file,
                                      Charset encoding)
                               throws IOException

Reads the contents of a file into a String. The file is always closed.

参数:

file - the file to read, must not be null

encoding - the encoding to use, null means platform default

返回:

the file contents, never null

抛出:

IOException - in case of an I/O error

从以下版本开始:

2.3

openInputStream

public static FileInputStream openInputStream(File file)
                                       throws IOException

Opens a FileInputStream for the specified file, providing better error messages than simply calling new FileInputStream(file).

At the end of the method either the stream will be successfully opened, or an exception will have been thrown.

An exception is thrown if the file does not exist. An exception is thrown if the file object exists but is a directory. An exception is thrown if the file exists but cannot be read.

参数:

file - the file to open for input, must not be null

返回:

a new FileInputStream for the specified file

抛出:

FileNotFoundException - if the file does not exist

IOException - if the file object is a directory

IOException - if the file cannot be read

从以下版本开始:

1.3