org.springframework.boot.loader.jar

Class RandomAccessJarFile

java.lang.Object

java.util.zip.ZipFile

java.util.jar.JarFile

org.springframework.boot.loader.jar.RandomAccessJarFile

All Implemented Interfaces:

Closeable, AutoCloseable

public class RandomAccessJarFile
extends JarFile

A Jar file that can loaded from a RandomAccessDataFile. This class extends and behaves in the same was a the standard JDK JarFile the following additional functionality.

• Jar entries can be filtered during construction and 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
RandomAccessJarFile(File file, JarEntryFilter... filters) Create a new RandomAccessJarFile backed by the specified file.
RandomAccessJarFile(RandomAccessDataFile file, JarEntryFilter... filters) Create a new RandomAccessJarFile backed by the specified file.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
Enumeration<JarEntry>	entries()
ZipEntry	getEntry(String name)
RandomAccessJarFile	getFilteredJarFile(JarEntryFilter... filters) Return a new jar based on the filtered contents of this file.
InputStream	getInputStream(ZipEntry ze)
JarEntry	getJarEntry(String name)
Manifest	getManifest()
String	getName()
RandomAccessJarFile	getNestedJarFile(ZipEntry ze, JarEntryFilter... filters) Return a nested RandomAccessJarFile loaded from the specified entry.
protected RandomAccessDataFile	getRootJarFile()
URL	getUrl() Return a URL that can be used to access this JAR file.
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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Constant Field Values

EXTHDR

public static final int EXTHDR

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Constant Field Values

CENHDR

public static final int CENHDR

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ENDHDR

public static final int ENDHDR

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Constant Field Values

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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Constant Field Values

LOCCRC

public static final int LOCCRC

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Constant Field Values

LOCSIZ

public static final int LOCSIZ

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Constant Field Values

LOCLEN

public static final int LOCLEN

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LOCNAM

public static final int LOCNAM

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Constant Field Values

LOCEXT

public static final int LOCEXT

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Constant Field Values

EXTCRC

public static final int EXTCRC

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Constant Field Values

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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Constant Field Values

CENHOW

public static final int CENHOW

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Constant Field Values

CENTIM

public static final int CENTIM

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Constant Field Values

CENCRC

public static final int CENCRC

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Constant Field Values

CENSIZ

public static final int CENSIZ

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Constant Field Values

CENLEN

public static final int CENLEN

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Constant Field Values

CENNAM

public static final int CENNAM

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Constant Field Values

CENEXT

public static final int CENEXT

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Constant Field Values

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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Constant Field Values

ENDSUB

public static final int ENDSUB

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Constant Field Values

ENDTOT

public static final int ENDTOT

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Constant Field Values

ENDSIZ

public static final int ENDSIZ

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ENDOFF

public static final int ENDOFF

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Constant Field Values

ENDCOM

public static final int ENDCOM

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Constant Field Values

Constructor Detail

RandomAccessJarFile

public RandomAccessJarFile(File file,
                   JarEntryFilter... filters)
                    throws IOException

Create a new RandomAccessJarFile backed by the specified file.

Parameters:

file - the root jar file

filters - an optional set of jar entry filters

Throws:

IOException

RandomAccessJarFile

public RandomAccessJarFile(RandomAccessDataFile file,
                   JarEntryFilter... filters)
                    throws IOException

Create a new RandomAccessJarFile backed by the specified file.

Parameters:

file - the root jar file

filters - an optional set of jar entry filters

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

getJarEntry

public JarEntry getJarEntry(String name)

Overrides:

getJarEntry in class JarFile

getEntry

public ZipEntry getEntry(String name)

Overrides:

getEntry in class JarFile

getInputStream

public InputStream getInputStream(ZipEntry ze)
                           throws IOException

Overrides:

getInputStream in class JarFile

Throws:

IOException

getNestedJarFile

public RandomAccessJarFile getNestedJarFile(ZipEntry ze,
                                   JarEntryFilter... filters)
                                     throws IOException

Return a nested RandomAccessJarFile loaded from the specified entry.

Parameters:

ze - the zip entry

filters - an optional set of jar entry filters to be applied

Returns:

a RandomAccessJarFile for the entry

Throws:

IOException

getFilteredJarFile

public RandomAccessJarFile 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 RandomAccessJarFile

Throws:

IOException

getName

public String getName()

Overrides:

getName in class ZipFile

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

toString

public String toString()

Overrides:

toString in class Object

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