org.springframework.boot.loader.jar

Class JarFile

java.lang.Object

java.util.zip.ZipFile

java.util.jar.JarFile

org.springframework.boot.loader.jar.JarFile

All Implemented Interfaces:

Closeable, AutoCloseable, Iterable<JarEntryData>

public class JarFile
extends JarFile
implements Iterable<JarEntryData>

Extended variant of JarFile that behaves in the same way but offers the following additional functionality.

• New filtered files can be created from existing files.
• A nested JarFile can be obtained based on any directory entry.
• A nested JarFile can be obtained for embedded JAR files (as long as their entry is not compressed).
• Entry data can be accessed as RandomAccessData.

Author:

Phillip Webb

Field Summary

Fields

Modifier and Type	Field and Description
static int	CENATT
static int	CENATX
static int	CENCOM
static int	CENCRC
static int	CENDSK
static int	CENEXT
static int	CENFLG
static int	CENHDR
static int	CENHOW
static int	CENLEN
static int	CENNAM
static int	CENOFF
static long	CENSIG
static int	CENSIZ
static int	CENTIM
static int	CENVEM
static int	CENVER
static int	ENDCOM
static int	ENDHDR
static int	ENDOFF
static long	ENDSIG
static int	ENDSIZ
static int	ENDSUB
static int	ENDTOT
static int	EXTCRC
static int	EXTHDR
static int	EXTLEN
static long	EXTSIG
static int	EXTSIZ
static int	LOCCRC
static int	LOCEXT
static int	LOCFLG
static int	LOCHDR
static int	LOCHOW
static int	LOCLEN
static int	LOCNAM
static long	LOCSIG
static int	LOCSIZ
static int	LOCTIM
static 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 and Description
JarFile(File file) Create a new JarFile backed by the specified file.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
Enumeration<JarEntry>	entries()
ZipEntry	getEntry(String name)
JarFile	getFilteredJarFile(JarEntryFilter... filters) Return a new jar based on the filtered contents of this file.
InputStream	getInputStream(ZipEntry ze)
JarEntry	getJarEntry(String name)
JarEntryData	getJarEntryData(AsciiBytes name)
JarEntryData	getJarEntryData(String name)
Manifest	getManifest()
String	getName()
JarFile	getNestedJarFile(JarEntryData sourceEntry) Return a nested JarFile loaded from the specified entry.
JarFile	getNestedJarFile(ZipEntry ze) Return a nested JarFile loaded from the specified entry.
protected RandomAccessDataFile	getRootJarFile()
URL	getUrl() Return a URL that can be used to access this JAR file.
Iterator<JarEntryData>	iterator()
static void	registerUrlProtocolHandler() Register a 'java.protocol.handler.pkgs' property so that a URLStreamHandler will be located to deal with jar URLs.
int	size()
String	toString()

Methods inherited from class java.util.zip.ZipFile

finalize, getComment

Methods inherited from class java.lang.Object

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

Field Detail

LOCSIG

public static final long LOCSIG

See Also:

Constant Field Values

EXTSIG

public static final long EXTSIG

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Constant Field Values

CENSIG

public static final long CENSIG

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Constant Field Values

ENDSIG

public static final long ENDSIG

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Constant Field Values

LOCHDR

public static final int LOCHDR

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EXTHDR

public static final int EXTHDR

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CENHDR

public static final int CENHDR

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ENDHDR

public static final int ENDHDR

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LOCVER

public static final int LOCVER

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Constant Field Values

LOCFLG

public static final int LOCFLG

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Constant Field Values

LOCHOW

public static final int LOCHOW

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Constant Field Values

LOCTIM

public static final int LOCTIM

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LOCCRC

public static final int LOCCRC

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LOCSIZ

public static final int LOCSIZ

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LOCLEN

public static final int LOCLEN

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LOCNAM

public static final int LOCNAM

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LOCEXT

public static final int LOCEXT

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Constant Field Values

EXTCRC

public static final int EXTCRC

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EXTSIZ

public static final int EXTSIZ

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EXTLEN

public static final int EXTLEN

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Constant Field Values

CENVEM

public static final int CENVEM

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Constant Field Values

CENVER

public static final int CENVER

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Constant Field Values

CENFLG

public static final int CENFLG

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CENHOW

public static final int CENHOW

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CENTIM

public static final int CENTIM

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CENCRC

public static final int CENCRC

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CENSIZ

public static final int CENSIZ

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CENLEN

public static final int CENLEN

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Constant Field Values

CENNAM

public static final int CENNAM

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CENEXT

public static final int CENEXT

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CENCOM

public static final int CENCOM

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CENDSK

public static final int CENDSK

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CENATT

public static final int CENATT

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CENATX

public static final int CENATX

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CENOFF

public static final int CENOFF

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ENDSUB

public static final int ENDSUB

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Constant Field Values

ENDTOT

public static final int ENDTOT

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ENDSIZ

public static final int ENDSIZ

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ENDOFF

public static final int ENDOFF

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ENDCOM

public static final int ENDCOM

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Constant Field Values

Constructor Detail

JarFile

public JarFile(File file)
        throws IOException

Create a new JarFile backed by the specified file.

Parameters:

file - the root jar file

Throws:

IOException

Method Detail

getRootJarFile

protected final RandomAccessDataFile getRootJarFile()

getManifest

public Manifest getManifest()
                     throws IOException

Overrides:

getManifest in class JarFile

Throws:

IOException

entries

public Enumeration<JarEntry> entries()

Overrides:

entries in class JarFile

iterator

public Iterator<JarEntryData> iterator()

Specified by:

iterator in interface Iterable<JarEntryData>

getJarEntry

public JarEntry getJarEntry(String name)

Overrides:

getJarEntry in class JarFile

getEntry

public ZipEntry getEntry(String name)

Overrides:

getEntry in class JarFile

getJarEntryData

public JarEntryData getJarEntryData(String name)

getJarEntryData

public JarEntryData getJarEntryData(AsciiBytes name)

getInputStream

public InputStream getInputStream(ZipEntry ze)
                           throws IOException

Overrides:

getInputStream in class JarFile

Throws:

IOException

getNestedJarFile

public JarFile getNestedJarFile(ZipEntry ze)
                         throws IOException

Return a nested JarFile loaded from the specified entry.

Parameters:

ze - the zip entry

Returns:

a JarFile for the entry

Throws:

IOException

getNestedJarFile

public JarFile getNestedJarFile(JarEntryData sourceEntry)
                         throws IOException

Return a nested JarFile loaded from the specified entry.

Parameters:

sourceEntry - the zip entry

Returns:

a JarFile for the entry

Throws:

IOException

getFilteredJarFile

public JarFile getFilteredJarFile(JarEntryFilter... filters)
                           throws IOException

Return a new jar based on the filtered contents of this file.

Parameters:

filters - the set of jar entry filters to be applied

Returns:

a filtered JarFile

Throws:

IOException

size

public int size()

Overrides:

size in class ZipFile

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class ZipFile

Throws:

IOException

getUrl

public URL getUrl()
           throws MalformedURLException

Return a URL that can be used to access this JAR file. NOTE: the specified URL cannot be serialized and or cloned.

Returns:

the URL

Throws:

MalformedURLException

toString

public String toString()

Overrides:

toString in class Object

getName

public String getName()

Overrides:

getName in class ZipFile

registerUrlProtocolHandler

public static void registerUrlProtocolHandler()

Register a 'java.protocol.handler.pkgs' property so that a URLStreamHandler will be located to deal with jar URLs.