JarFile

java.lang.Object
- java.util.zip.ZipFile
- - java.util.jar.JarFile

所有已实现的接口:

Closeable, AutoCloseable
```
public class JarFile
extends ZipFile
```
The JarFile class is used to read the contents of a jar file from any file that can be opened with java.io.RandomAccessFile. It extends the class java.util.zip.ZipFile with support for reading an optional Manifest entry. The Manifest can be used to specify meta-information about the jar file and its entries.
Unless otherwise noted, passing a null argument to a constructor or method in this class will cause a NullPointerException to be thrown. If the verify flag is on when opening a signed jar file, the content of the file is verified against its signature embedded inside the file. Please note that the verification process does not include validating the signer's certificate. A caller should inspect the return value of JarEntry#getCodeSigners() to further determine if the signature can be trusted.

从以下版本开始:

1.2

另请参阅:

Manifest, ZipFile, JarEntry

字段概要

字段
限定符和类型	字段	说明
`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`
`static String`	`MANIFEST_NAME`	The JAR manifest file name.

从类继承的字段 java.util.zip.ZipFile
OPEN_DELETE, OPEN_READ

构造器概要

构造器
构造器	说明
`JarFile(File file)`	Creates a new `JarFile` to read from the specified `File` object.
`JarFile(File file, boolean verify)`	Creates a new `JarFile` to read from the specified `File` object.
`JarFile(File file, boolean verify, int mode)`	Creates a new `JarFile` to read from the specified `File` object in the specified mode.
`JarFile(String name)`	Creates a new `JarFile` to read from the specified file `name`.
`JarFile(String name, boolean verify)`	Creates a new `JarFile` to read from the specified file `name`.

方法概要

所有方法实例方法具体方法
限定符和类型	方法	说明
`Enumeration<JarEntry>`	`entries()`	Returns an enumeration of the zip file entries.
`ZipEntry`	`getEntry(String name)`	Returns the `ZipEntry` for the given entry name or `null` if not found.
`InputStream`	`getInputStream(ZipEntry ze)`	Returns an input stream for reading the contents of the specified zip file entry.
`JarEntry`	`getJarEntry(String name)`	Returns the `JarEntry` for the given entry name or `null` if not found.
`Manifest`	`getManifest()`	Returns the jar file manifest, or `null` if none.
`Stream<JarEntry>`	`stream()`	Return an ordered `Stream` over the ZIP file entries.

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

从类继承的方法 java.util.zip.ZipFile
close, finalize, getComment, getName, size

- 字段详细资料
  - CENATT
```
public static final int CENATT
```
    另请参阅:
    
    常量字段值
  - CENATX
```
public static final int CENATX
```
    另请参阅:
    
    常量字段值
  - CENCOM
```
public static final int CENCOM
```
    另请参阅:
    
    常量字段值
  - CENCRC
```
public static final int CENCRC
```
    另请参阅:
    
    常量字段值
  - CENDSK
```
public static final int CENDSK
```
    另请参阅:
    
    常量字段值
  - CENEXT
```
public static final int CENEXT
```
    另请参阅:
    
    常量字段值
  - CENFLG
```
public static final int CENFLG
```
    另请参阅:
    
    常量字段值
  - CENHDR
```
public static final int CENHDR
```
    另请参阅:
    
    常量字段值
  - CENHOW
```
public static final int CENHOW
```
    另请参阅:
    
    常量字段值
  - CENLEN
```
public static final int CENLEN
```
    另请参阅:
    
    常量字段值
  - CENNAM
```
public static final int CENNAM
```
    另请参阅:
    
    常量字段值
  - CENOFF
```
public static final int CENOFF
```
    另请参阅:
    
    常量字段值
  - CENSIG
```
public static final long CENSIG
```
    另请参阅:
    
    常量字段值
  - CENSIZ
```
public static final int CENSIZ
```
    另请参阅:
    
    常量字段值
  - CENTIM
```
public static final int CENTIM
```
    另请参阅:
    
    常量字段值
  - CENVEM
```
public static final int CENVEM
```
    另请参阅:
    
    常量字段值
  - CENVER
```
public static final int CENVER
```
    另请参阅:
    
    常量字段值
  - ENDCOM
```
public static final int ENDCOM
```
    另请参阅:
    
    常量字段值
  - ENDHDR
```
public static final int ENDHDR
```
    另请参阅:
    
    常量字段值
  - ENDOFF
```
public static final int ENDOFF
```
    另请参阅:
    
    常量字段值
  - ENDSIG
```
public static final long ENDSIG
```
    另请参阅:
    
    常量字段值
  - ENDSIZ
```
public static final int ENDSIZ
```
    另请参阅:
    
    常量字段值
  - ENDSUB
```
public static final int ENDSUB
```
    另请参阅:
    
    常量字段值
  - ENDTOT
```
public static final int ENDTOT
```
    另请参阅:
    
    常量字段值
  - EXTCRC
```
public static final int EXTCRC
```
    另请参阅:
    
    常量字段值
  - EXTHDR
```
public static final int EXTHDR
```
    另请参阅:
    
    常量字段值
  - EXTLEN
```
public static final int EXTLEN
```
    另请参阅:
    
    常量字段值
  - EXTSIG
```
public static final long EXTSIG
```
    另请参阅:
    
    常量字段值
  - EXTSIZ
```
public static final int EXTSIZ
```
    另请参阅:
    
    常量字段值
  - LOCCRC
```
public static final int LOCCRC
```
    另请参阅:
    
    常量字段值
  - LOCEXT
```
public static final int LOCEXT
```
    另请参阅:
    
    常量字段值
  - LOCFLG
```
public static final int LOCFLG
```
    另请参阅:
    
    常量字段值
  - LOCHDR
```
public static final int LOCHDR
```
    另请参阅:
    
    常量字段值
  - LOCHOW
```
public static final int LOCHOW
```
    另请参阅:
    
    常量字段值
  - LOCLEN
```
public static final int LOCLEN
```
    另请参阅:
    
    常量字段值
  - LOCNAM
```
public static final int LOCNAM
```
    另请参阅:
    
    常量字段值
  - LOCSIG
```
public static final long LOCSIG
```
    另请参阅:
    
    常量字段值
  - LOCSIZ
```
public static final int LOCSIZ
```
    另请参阅:
    
    常量字段值
  - LOCTIM
```
public static final int LOCTIM
```
    另请参阅:
    
    常量字段值
  - LOCVER
```
public static final int LOCVER
```
    另请参阅:
    
    常量字段值
  - MANIFEST_NAME
```
public static final String MANIFEST_NAME
```
    The JAR manifest file name.
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - JarFile
```
public JarFile(String name)
        throws IOException
```
    Creates a new JarFile to read from the specified file name. The JarFile will be verified if it is signed.
    
    参数:
    
    name - the name of the jar file to be opened for reading
    
    抛出:
    
    IOException - if an I/O error has occurred
    
    SecurityException - if access to the file is denied by the SecurityManager
  - JarFile
```
public JarFile(String name,
               boolean verify)
        throws IOException
```
    Creates a new JarFile to read from the specified file name.
    
    参数:
    
    name - the name of the jar file to be opened for reading
    
    verify - whether or not to verify the jar file if it is signed.
    
    抛出:
    
    IOException - if an I/O error has occurred
    
    SecurityException - if access to the file is denied by the SecurityManager
  - JarFile
```
public JarFile(File file)
        throws IOException
```
    Creates a new JarFile to read from the specified File object. The JarFile will be verified if it is signed.
    
    参数:
    
    file - the jar file to be opened for reading
    
    抛出:
    
    IOException - if an I/O error has occurred
    
    SecurityException - if access to the file is denied by the SecurityManager
  - JarFile
```
public JarFile(File file,
               boolean verify)
        throws IOException
```
    Creates a new JarFile to read from the specified File object.
    
    参数:
    
    file - the jar file to be opened for reading
    
    verify - whether or not to verify the jar file if it is signed.
    
    抛出:
    
    IOException - if an I/O error has occurred
    
    SecurityException - if access to the file is denied by the SecurityManager.
  - JarFile
```
public JarFile(File file,
               boolean verify,
               int mode)
        throws IOException
```
    Creates a new JarFile to read from the specified File object in the specified mode. The mode argument must be either OPEN_READ or OPEN_READ | OPEN_DELETE.
    
    参数:
    
    file - the jar file to be opened for reading
    
    verify - whether or not to verify the jar file if it is signed.
    
    mode - the mode in which the file is to be opened
    
    抛出:
    
    IOException - if an I/O error has occurred
    
    IllegalArgumentException - if the mode argument is invalid
    
    SecurityException - if access to the file is denied by the SecurityManager
    
    从以下版本开始:
    
    1.3
- 方法详细资料
  - getManifest
```
public Manifest getManifest()
                     throws IOException
```
    Returns the jar file manifest, or null if none.
    
    返回:
    
    the jar file manifest, or null if none
    
    抛出:
    
    IllegalStateException - may be thrown if the jar file has been closed
    
    IOException - if an I/O error has occurred
  - getJarEntry
```
public JarEntry getJarEntry(String name)
```
    Returns the JarEntry for the given entry name or null if not found.
    
    参数:
    
    name - the jar file entry name
    
    返回:
    
    the JarEntry for the given entry name or null if not found.
    
    抛出:
    
    IllegalStateException - may be thrown if the jar file has been closed
    
    另请参阅:
    
    JarEntry
  - getEntry
```
public ZipEntry getEntry(String name)
```
    Returns the ZipEntry for the given entry name or null if not found.
    
    覆盖:
    
    getEntry 在类中 ZipFile
    
    参数:
    
    name - the jar file entry name
    
    返回:
    
    the ZipEntry for the given entry name or null if not found
    
    抛出:
    
    IllegalStateException - may be thrown if the jar file has been closed
    
    另请参阅:
    
    ZipEntry
  - entries
```
public Enumeration<JarEntry> entries()
```
    Returns an enumeration of the zip file entries.
    
    覆盖:
    
    entries 在类中 ZipFile
    
    返回:
    
    an enumeration of the ZIP file entries
  - stream
```
public Stream<JarEntry> stream()
```
    从类复制的说明: ZipFile
    
    Return an ordered Stream over the ZIP file entries. Entries appear in the Stream in the order they appear in the central directory of the ZIP file.
    
    覆盖:
    
    stream 在类中 ZipFile
    
    返回:
    
    an ordered Stream of entries in this ZIP file
  - getInputStream
```
public InputStream getInputStream(ZipEntry ze)
                           throws IOException
```
    Returns an input stream for reading the contents of the specified zip file entry.
    
    覆盖:
    
    getInputStream 在类中 ZipFile
    
    参数:
    
    ze - the zip file entry
    
    返回:
    
    an input stream for reading the contents of the specified zip file entry
    
    抛出:
    
    ZipException - if a zip file format error has occurred
    
    IOException - if an I/O error has occurred
    
    SecurityException - if any of the jar file entries are incorrectly signed.
    
    IllegalStateException - may be thrown if the jar file has been closed

类 JarFile

字段概要

从类继承的字段 java.util.zip.ZipFile

构造器概要

方法概要

从类继承的方法 java.lang.Object

从类继承的方法 java.util.zip.ZipFile

字段详细资料

CENATT

CENATX

CENCOM

CENCRC

CENDSK

CENEXT

CENFLG

CENHDR

CENHOW

CENLEN

CENNAM

CENOFF

CENSIG

CENSIZ

CENTIM

CENVEM

CENVER

ENDCOM

ENDHDR

ENDOFF

ENDSIG

ENDSIZ

ENDSUB

ENDTOT

EXTCRC

EXTHDR

EXTLEN

EXTSIG

EXTSIZ

LOCCRC

LOCEXT

LOCFLG

LOCHDR

LOCHOW

LOCLEN

LOCNAM

LOCSIG

LOCSIZ

LOCTIM

LOCVER

MANIFEST_NAME

构造器详细资料

JarFile

JarFile

JarFile

JarFile

JarFile

方法详细资料

getManifest

getJarEntry

getEntry

entries

stream

getInputStream