apache commons-io相关介绍-IOUtils类

IOUtils类

IOUtils类普通的IO流(InputStream, OutputStream)/读写器(Reader、Writer)操作函数，该类提供下列静态函数用于输入输出操作。

• closeQuietly these methods close a stream ignoring nulls and exceptions
• toXxx/read these methods read data from a stream
• write these methods write data to a stream
• copy these methods copy all the data from one stream to another
• contentEquals these methods compare the content of two streams

关闭流

close(URLConnection)
closeQuietly(Closeable)
closeQuietly(InputStream)
closeQuietly(OutputStream)
closeQuietly(Reader)
closeQuietly(Writer)
closeQuietly(ServerSocket)
closeQuietly(Socket)
closeQuietly(Selector)

比较流或者阅读器的内容

contentEquals(InputStream, InputStream)
contentEquals(Reader, Reader)
contentEqualsIgnoreEOL(Reader, Reader)

复制操作

copy(InputStream, OutputStream)
copy(InputStream, Writer)
copy(InputStream, Writer, String)
copy(InputStream, Writer, Charset)
copy(Reader, OutputStream)
copy(Reader, OutputStream, String)
copy(Reader, OutputStream, Charset)
copy(Reader, Writer)
copyLarge(InputStream, OutputStream)
copyLarge(InputStream, OutputStream, byte[])
copyLarge(InputStream, OutputStream, long, long)
copyLarge(InputStream, OutputStream, long, long, byte[])
copyLarge(Reader, Writer)
copyLarge(Reader, Writer, char[])
copyLarge(Reader, Writer, long, long)
copyLarge(Reader, Writer, long, long, char[])

行迭代器

lineIterator(InputStream, String)
lineIterator(InputStream, Charset)
lineIterator(Reader)

读取内容

read(InputStream, byte[])
read(InputStream, byte[], int, int)
read(Reader, char[])
read(Reader, char[], int, int)
readFully(InputStream, byte[])
readFully(InputStream, byte[], int, int)
readFully(Reader, char[])
readFully(Reader, char[], int, int)
readLines(InputStream)
readLines(InputStream, String)
readLines(InputStream, Charset)
readLines(Reader)

定位读取位置

skip(InputStream, long)
skip(Reader, long)
skipFully(InputStream, long)
skipFully(Reader, long)

缓冲

toBufferedInputStream(InputStream)
toBufferedReader(Reader)

转成字节/字符

toByteArray(InputStream)
toByteArray(InputStream, int)
toByteArray(InputStream, long)
toByteArray(Reader)
toByteArray(Reader, String)
toByteArray(Reader, Charset)
toByteArray(String)
toByteArray(URI)
toByteArray(URL)
toByteArray(URLConnection)
toCharArray(InputStream)
toCharArray(InputStream, String)
toCharArray(InputStream, Charset)
toCharArray(Reader)

转成输入流

toInputStream(CharSequence)
toInputStream(CharSequence, String)
toInputStream(CharSequence, Charset)
toInputStream(String)
toInputStream(String, String)
toInputStream(String, Charset)

toString

toString(byte[])
toString(byte[], String)
toString(InputStream)
toString(InputStream, String)
toString(InputStream, Charset)
toString(Reader)
toString(URI)
toString(URI, String)
toString(URI, Charset)
toString(URL)
toString(URL, String)
toString(URL, Charset)

写入数据

write(byte[], OutputStream)
write(byte[], Writer)
write(byte[], Writer, String)
write(byte[], Writer, Charset)
write(char[], OutputStream)
write(char[], OutputStream, String)
write(char[], OutputStream, Charset)
write(char[], Writer)
write(CharSequence, OutputStream)
write(CharSequence, OutputStream, String)
write(CharSequence, OutputStream, Charset)
write(CharSequence, Writer)
write(String, OutputStream)
write(String, OutputStream, String)
write(String, OutputStream, Charset)
write(String, Writer)
write(StringBuffer, OutputStream)
write(StringBuffer, OutputStream, String)
write(StringBuffer, Writer)
writeLines(Collection<?>, String, OutputStream)
writeLines(Collection<?>, String, OutputStream, String)
writeLines(Collection<?>, String, OutputStream, Charset)
writeLines(Collection<?>, String, Writer)