Package com.imyeyu.io

Class JarReader

java.lang.Object

java.util.zip.ZipFile

java.util.jar.JarFile

com.imyeyu.io.JarReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class JarReader
extends JarFile

Jar 文件读取

Version:

2021-12-01 17:39

Author:

夜雨

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CENATT
static final int	CENATX
static final int	CENCOM
static final int	CENCRC
static final int	CENDSK
static final int	CENEXT
static final int	CENFLG
static final int	CENHDR
static final int	CENHOW
static final int	CENLEN
static final int	CENNAM
static final int	CENOFF
static final long	CENSIG
static final int	CENSIZ
static final int	CENTIM
static final int	CENVEM
static final int	CENVER
static final int	ENDCOM
static final int	ENDHDR
static final int	ENDOFF
static final long	ENDSIG
static final int	ENDSIZ
static final int	ENDSUB
static final int	ENDTOT
static final int	EXTCRC
static final int	EXTHDR
static final int	EXTLEN
static final long	EXTSIG
static final int	EXTSIZ
static final int	LOCCRC
static final int	LOCEXT
static final int	LOCFLG
static final int	LOCHDR
static final int	LOCHOW
static final int	LOCLEN
static final int	LOCNAM
static final long	LOCSIG
static final int	LOCSIZ
static final int	LOCTIM
static final int	LOCVER

Fields inherited from class java.util.jar.JarFile

MANIFEST_NAME

Fields inherited from class java.util.zip.ZipFile

OPEN_DELETE, OPEN_READ

Constructor Summary

Constructors

Constructor	Description
JarReader(File file)	默认构造

Method Summary

Modifier and Type	Method	Description
byte[]	getBytes(String path)	读取某文件为字节数据
Map<String,InputStream>	getFiles()	jar 所有文件的数据流映射列表，Map<路径, 数据流>
InputStream	getInputStream(String path)	获取文件输入流
boolean	has(String path)	该文件是否存在

Methods inherited from class java.util.jar.JarFile

baseVersion, entries, getEntry, getInputStream, getJarEntry, getManifest, getVersion, isMultiRelease, runtimeVersion, stream, versionedStream

Methods inherited from class java.util.zip.ZipFile

close, getComment, getName, size

Methods inherited from class java.lang.Object

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

Field Details

LOCSIG

static final long LOCSIG

See Also:

• Constant Field Values

EXTSIG

static final long EXTSIG

See Also:

• Constant Field Values

CENSIG

static final long CENSIG

See Also:

• Constant Field Values

ENDSIG

static final long ENDSIG

See Also:

• Constant Field Values

LOCHDR

static final int LOCHDR

See Also:

• Constant Field Values

EXTHDR

static final int EXTHDR

See Also:

• Constant Field Values

CENHDR

static final int CENHDR

See Also:

• Constant Field Values

ENDHDR

static final int ENDHDR

See Also:

• Constant Field Values

LOCVER

static final int LOCVER

See Also:

• Constant Field Values

LOCFLG

static final int LOCFLG

See Also:

• Constant Field Values

LOCHOW

static final int LOCHOW

See Also:

• Constant Field Values

LOCTIM

static final int LOCTIM

See Also:

• Constant Field Values

LOCCRC

static final int LOCCRC

See Also:

• Constant Field Values

LOCSIZ

static final int LOCSIZ

See Also:

• Constant Field Values

LOCLEN

static final int LOCLEN

See Also:

• Constant Field Values

LOCNAM

static final int LOCNAM

See Also:

• Constant Field Values

LOCEXT

static final int LOCEXT

See Also:

• Constant Field Values

EXTCRC

static final int EXTCRC

See Also:

• Constant Field Values

EXTSIZ

static final int EXTSIZ

See Also:

• Constant Field Values

EXTLEN

static final int EXTLEN

See Also:

• Constant Field Values

CENVEM

static final int CENVEM

See Also:

• Constant Field Values

CENVER

static final int CENVER

See Also:

• Constant Field Values

CENFLG

static final int CENFLG

See Also:

• Constant Field Values

CENHOW

static final int CENHOW

See Also:

• Constant Field Values

CENTIM

static final int CENTIM

See Also:

• Constant Field Values

CENCRC

static final int CENCRC

See Also:

• Constant Field Values

CENSIZ

static final int CENSIZ

See Also:

• Constant Field Values

CENLEN

static final int CENLEN

See Also:

• Constant Field Values

CENNAM

static final int CENNAM

See Also:

• Constant Field Values

CENEXT

static final int CENEXT

See Also:

• Constant Field Values

CENCOM

static final int CENCOM

See Also:

• Constant Field Values

CENDSK

static final int CENDSK

See Also:

• Constant Field Values

CENATT

static final int CENATT

See Also:

• Constant Field Values

CENATX

static final int CENATX

See Also:

• Constant Field Values

CENOFF

static final int CENOFF

See Also:

• Constant Field Values

ENDSUB

static final int ENDSUB

See Also:

• Constant Field Values

ENDTOT

static final int ENDTOT

See Also:

• Constant Field Values

ENDSIZ

static final int ENDSIZ

See Also:

• Constant Field Values

ENDOFF

static final int ENDOFF

See Also:

• Constant Field Values

ENDCOM

static final int ENDCOM

See Also:

• Constant Field Values

Constructor Details

JarReader

public JarReader(File file)
          throws IOException

默认构造

Parameters:

file - 文件

Throws:

IOException - 读取异常

Method Details

has

public boolean has(String path)

该文件是否存在

Parameters:

path - 路径

Returns:

true 为存在

getInputStream

public InputStream getInputStream(String path)
                           throws FileNotFoundException

获取文件输入流

Parameters:

path - 路径

Returns:

输入流

Throws:

FileNotFoundException - 文件不存在

getBytes

public byte[] getBytes(String path)
                throws IOException

读取某文件为字节数据

Parameters:

path - 路径

Returns:

字节数据

Throws:

FileNotFoundException - 文件不存在

IOException

getFiles

public Map<String,InputStream> getFiles()

jar 所有文件的数据流映射列表，Map<路径, 数据流>