ZipOutputStream

java.lang.Object
- java.io.OutputStream
- - java.io.FilterOutputStream
  - - com.sh.common.zip.ZipOutputStream

所有已实现的接口:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable
```
public class ZipOutputStream
extends java.io.FilterOutputStream
```
Reimplementation of java.util.zip.ZipOutputStream that does handle the extended functionality of this package, especially internal/external file attributes and extra fields with different layouts for local file data and central directory entries.
This class will try to use RandomAccessFile when you know that the output is going to go to a file.

If RandomAccessFile cannot be used, this implementation will use a Data Descriptor to store size and CRC information for DEFLATED entries, this means, you don't need to calculate them yourself. Unfortunately this is not possible for the STORED method, here setting the CRC and uncompressed size information is required before putNextEntry can be called.

嵌套类概要

嵌套类
限定符和类型类和说明

static class ZipOutputStream.UnicodeExtraFieldPolicy
enum that represents the possible policies for creating Unicode extra fields.

嵌套类
限定符和类型	类和说明
`static class`	`ZipOutputStream.UnicodeExtraFieldPolicy` enum that represents the possible policies for creating Unicode extra fields.

字段概要

字段
限定符和类型	字段和说明
`static int`	`DEFAULT_COMPRESSION` Default compression level for deflated entries.
`static int`	`DEFLATED` Compression method for deflated entries.
`static int`	`EFS_FLAG` 已过时。 use `UFT8_NAMES_FLAG` instead
`static int`	`STORED` Compression method for stored entries.
`static int`	`UFT8_NAMES_FLAG` General purpose flag, which indicates that filenames are written in utf-8.

构造器概要

构造器
构造器和说明
`ZipOutputStream(java.io.File file)` Creates a new ZIP OutputStream writing to a File.
`ZipOutputStream(java.io.OutputStream out)` Creates a new ZIP OutputStream filtering the underlying stream.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`close()` Closes this output stream and releases any system resources associated with the stream.
`void`	`closeEntry()` Writes all necessary data for this entry.
`void`	`finish()` Finishs writing the contents and closes this as well as the underlying stream.
`void`	`flush()` Flushes this output stream and forces any buffered output bytes to be written out to the stream.
`java.lang.String`	`getEncoding()` The encoding to use for filenames and the file comment.
`boolean`	`isSeekable()` This method indicates whether this archive is writing to a seekable stream (i.e., to a random access file).
`void`	`putNextEntry(ZipEntry ze)` Begin writing next entry.
`void`	`setComment(java.lang.String comment)` Set the file comment.
`void`	`setCreateUnicodeExtraFields(ZipOutputStream.UnicodeExtraFieldPolicy b)` Whether to create Unicode Extra Fields.
`void`	`setEncoding(java.lang.String encoding)` The encoding to use for filenames and the file comment.
`void`	`setFallbackToUTF8(boolean b)` Whether to fall back to UTF and the language encoding flag if the file name cannot be encoded using the specified encoding.
`void`	`setLevel(int level)` Sets the compression level for subsequent entries.
`void`	`setMethod(int method)` Sets the default compression method for subsequent entries.
`void`	`setUseLanguageEncodingFlag(boolean b)` Whether to set the language encoding flag if the file name encoding is UTF-8.
`void`	`write(byte[] b, int offset, int length)` Writes bytes to ZIP entry.
`void`	`write(int b)` Writes a single byte to ZIP entry.

从类继承的方法 java.io.FilterOutputStream
write

从类继承的方法 java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - DEFLATED
```
public static final int DEFLATED
```
    Compression method for deflated entries.
    
    从以下版本开始:
    
    1.1
    
    另请参阅:
    
    常量字段值
  - DEFAULT_COMPRESSION
```
public static final int DEFAULT_COMPRESSION
```
    Default compression level for deflated entries.
    
    从以下版本开始:
    
    Ant 1.7
    
    另请参阅:
    
    常量字段值
  - STORED
```
public static final int STORED
```
    Compression method for stored entries.
    
    从以下版本开始:
    
    1.1
    
    另请参阅:
    
    常量字段值
  - UFT8_NAMES_FLAG
```
public static final int UFT8_NAMES_FLAG
```
    General purpose flag, which indicates that filenames are written in utf-8.
    
    另请参阅:
    
    常量字段值
  - EFS_FLAG
```
public static final int EFS_FLAG
```
    已过时。 use UFT8_NAMES_FLAG instead
    
    General purpose flag, which indicates that filenames are written in utf-8.
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - ZipOutputStream
```
public ZipOutputStream(java.io.OutputStream out)
```
    Creates a new ZIP OutputStream filtering the underlying stream.
    
    参数:
    
    out - the outputstream to zip
    
    从以下版本开始:
    
    1.1
  - ZipOutputStream
```
public ZipOutputStream(java.io.File file)
                throws java.io.IOException
```
    Creates a new ZIP OutputStream writing to a File. Will use random access if possible.
    
    参数:
    
    file - the file to zip to
    
    抛出:
    
    java.io.IOException - on error
    
    从以下版本开始:
    
    1.14
- 方法详细资料
  - isSeekable
```
public boolean isSeekable()
```
    This method indicates whether this archive is writing to a seekable stream (i.e., to a random access file).
    For seekable streams, you don't need to calculate the CRC or uncompressed size for STORED entries before invoking putNextEntry(com.sh.common.zip.ZipEntry).
    
    返回:
    
    true if seekable
    
    从以下版本开始:
    
    1.17
  - setEncoding
```
public void setEncoding(java.lang.String encoding)
```
    The encoding to use for filenames and the file comment.
    For a list of possible values see http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html. Defaults to the platform's default character encoding.
    
    参数:
    
    encoding - the encoding value
    
    从以下版本开始:
    
    1.3
  - getEncoding
```
public java.lang.String getEncoding()
```
    The encoding to use for filenames and the file comment.
    
    返回:
    
    null if using the platform's default character encoding.
    
    从以下版本开始:
    
    1.3
  - setUseLanguageEncodingFlag
```
public void setUseLanguageEncodingFlag(boolean b)
```
    Whether to set the language encoding flag if the file name encoding is UTF-8.
    Defaults to true.
    
    参数:
    
    b - boolean
  - setCreateUnicodeExtraFields
```
public void setCreateUnicodeExtraFields(ZipOutputStream.UnicodeExtraFieldPolicy b)
```
    Whether to create Unicode Extra Fields.
    Defaults to NEVER.
    
    参数:
    
    b - UnicodeExtraFieldPolicy
  - setFallbackToUTF8
```
public void setFallbackToUTF8(boolean b)
```
    Whether to fall back to UTF and the language encoding flag if the file name cannot be encoded using the specified encoding.
    Defaults to false.
    
    参数:
    
    b - boolean
  - finish
```
public void finish()
            throws java.io.IOException
```
    Finishs writing the contents and closes this as well as the underlying stream.
    
    抛出:
    
    java.io.IOException - on error
    
    从以下版本开始:
    
    1.1
  - closeEntry
```
public void closeEntry()
                throws java.io.IOException
```
    Writes all necessary data for this entry.
    
    抛出:
    
    java.io.IOException - on error
    
    从以下版本开始:
    
    1.1
  - putNextEntry
```
public void putNextEntry(ZipEntry ze)
                  throws java.io.IOException
```
    Begin writing next entry.
    
    参数:
    
    ze - the entry to write
    
    抛出:
    
    java.io.IOException - on error
    
    从以下版本开始:
    
    1.1
  - setComment
```
public void setComment(java.lang.String comment)
```
    Set the file comment.
    
    参数:
    
    comment - the comment
    
    从以下版本开始:
    
    1.1
  - setLevel
```
public void setLevel(int level)
```
    Sets the compression level for subsequent entries.
    Default is Deflater.DEFAULT_COMPRESSION.
    
    参数:
    
    level - the compression level.
    
    抛出:
    
    java.lang.IllegalArgumentException - if an invalid compression level is specified.
    
    从以下版本开始:
    
    1.1
  - setMethod
```
public void setMethod(int method)
```
    Sets the default compression method for subsequent entries.
    Default is DEFLATED.
    
    参数:
    
    method - an int from java.util.zip.ZipEntry
    
    从以下版本开始:
    
    1.1
  - write
```
public void write(byte[] b,
                  int offset,
                  int length)
           throws java.io.IOException
```
    Writes bytes to ZIP entry.
    
    覆盖:
    
    write 在类中 java.io.FilterOutputStream
    
    参数:
    
    b - the byte array to write
    
    offset - the start position to write from
    
    length - the number of bytes to write
    
    抛出:
    
    java.io.IOException - on error
  - write
```
public void write(int b)
           throws java.io.IOException
```
    Writes a single byte to ZIP entry.
    Delegates to the three arg method.
    
    覆盖:
    
    write 在类中 java.io.FilterOutputStream
    
    参数:
    
    b - the byte to write
    
    抛出:
    
    java.io.IOException - on error
    
    从以下版本开始:
    
    1.14
  - close
```
public void close()
           throws java.io.IOException
```
    Closes this output stream and releases any system resources associated with the stream.
    
    指定者:
    
    close 在接口中 java.io.Closeable
    
    指定者:
    
    close 在接口中 java.lang.AutoCloseable
    
    覆盖:
    
    close 在类中 java.io.FilterOutputStream
    
    抛出:
    
    java.io.IOException - if an I/O error occurs.
    
    从以下版本开始:
    
    1.14
  - flush
```
public void flush()
           throws java.io.IOException
```
    Flushes this output stream and forces any buffered output bytes to be written out to the stream.
    
    指定者:
    
    flush 在接口中 java.io.Flushable
    
    覆盖:
    
    flush 在类中 java.io.FilterOutputStream
    
    抛出:
    
    java.io.IOException - if an I/O error occurs.
    
    从以下版本开始:
    
    1.14

类 ZipOutputStream

嵌套类概要

字段概要

构造器概要

方法概要

从类继承的方法 java.io.FilterOutputStream

从类继承的方法 java.lang.Object

字段详细资料

DEFLATED

DEFAULT_COMPRESSION

STORED

UFT8_NAMES_FLAG

EFS_FLAG

构造器详细资料

ZipOutputStream

ZipOutputStream

方法详细资料

isSeekable

setEncoding

getEncoding

setUseLanguageEncodingFlag

setCreateUnicodeExtraFields

setFallbackToUTF8

finish

closeEntry

putNextEntry

setComment

setLevel

setMethod

write

write

close

flush