JarInputStream

java.lang.Object
- java.io.InputStream
- - java.io.FilterInputStream
  - - java.util.zip.InflaterInputStream
    - - java.util.zip.ZipInputStream
      - java.util.jar.JarInputStream

所有已实现的接口:

Closeable, AutoCloseable
```
public class JarInputStream
extends ZipInputStream
```
The JarInputStream class is used to read the contents of a JAR file from any input stream. It extends the class java.util.zip.ZipInputStream with support for reading an optional Manifest entry. The Manifest can be used to store meta-information about the JAR file and its entries.

从以下版本开始:

1.2

另请参阅:

Manifest, ZipInputStream

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`

从类继承的字段 java.io.FilterInputStream
in

从类继承的字段 java.util.zip.InflaterInputStream
buf, inf, len

构造器概要

构造器
构造器	说明
`JarInputStream(InputStream in)`	Creates a new `JarInputStream` and reads the optional manifest.
`JarInputStream(InputStream in, boolean verify)`	Creates a new `JarInputStream` and reads the optional manifest.

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
`protected ZipEntry`	`createZipEntry(String name)`	Creates a new `JarEntry` (`ZipEntry`) for the specified JAR file entry name.
`Manifest`	`getManifest()`	Returns the `Manifest` for this JAR file, or `null` if none.
`ZipEntry`	`getNextEntry()`	Reads the next ZIP file entry and positions the stream at the beginning of the entry data.
`JarEntry`	`getNextJarEntry()`	Reads the next JAR file entry and positions the stream at the beginning of the entry data.
`int`	`read(byte[] b, int off, int len)`	Reads from the current JAR file entry into an array of bytes.

从类继承的方法 java.io.FilterInputStream
read

从类继承的方法 java.util.zip.InflaterInputStream
fill, mark, markSupported, read, reset

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

从类继承的方法 java.util.zip.ZipInputStream
available, close, closeEntry, skip

- 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
- 构造器详细资料
  - JarInputStream
```
public JarInputStream(InputStream in)
               throws IOException
```
    Creates a new JarInputStream and reads the optional manifest. If a manifest is present, also attempts to verify the signatures if the JarInputStream is signed.
    
    参数:
    
    in - the actual input stream
    
    抛出:
    
    IOException - if an I/O error has occurred
  - JarInputStream
```
public JarInputStream(InputStream in,
                      boolean verify)
               throws IOException
```
    Creates a new JarInputStream and reads the optional manifest. If a manifest is present and verify is true, also attempts to verify the signatures if the JarInputStream is signed.
    
    参数:
    
    in - the actual input stream
    
    verify - whether or not to verify the JarInputStream if it is signed.
    
    抛出:
    
    IOException - if an I/O error has occurred
- 方法详细资料
  - getManifest
```
public Manifest getManifest()
```
    Returns the Manifest for this JAR file, or null if none.
    
    返回:
    
    the Manifest for this JAR file, or null if none.
  - getNextEntry
```
public ZipEntry getNextEntry()
                      throws IOException
```
    Reads the next ZIP file entry and positions the stream at the beginning of the entry data. If verification has been enabled, any invalid signature detected while positioning the stream for the next entry will result in an exception.
    
    覆盖:
    
    getNextEntry 在类中 ZipInputStream
    
    返回:
    
    the next ZIP file entry, or null if there are no more entries
    
    抛出:
    
    ZipException - if a ZIP file error has occurred
    
    IOException - if an I/O error has occurred
    
    SecurityException - if any of the jar file entries are incorrectly signed.
  - getNextJarEntry
```
public JarEntry getNextJarEntry()
                         throws IOException
```
    Reads the next JAR file entry and positions the stream at the beginning of the entry data. If verification has been enabled, any invalid signature detected while positioning the stream for the next entry will result in an exception.
    
    返回:
    
    the next JAR file entry, or null if there are no more entries
    
    抛出:
    
    ZipException - if a ZIP file error has occurred
    
    IOException - if an I/O error has occurred
    
    SecurityException - if any of the jar file entries are incorrectly signed.
  - read
```
public int read(byte[] b,
                int off,
                int len)
         throws IOException
```
    Reads from the current JAR file entry into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned. If verification has been enabled, any invalid signature on the current entry will be reported at some point before the end of the entry is reached.
    
    覆盖:
    
    read 在类中 ZipInputStream
    
    参数:
    
    b - the buffer into which the data is read
    
    off - the start offset in the destination array b
    
    len - the maximum number of bytes to read
    
    返回:
    
    the actual number of bytes read, or -1 if the end of the entry is reached
    
    抛出:
    
    NullPointerException - If b is null.
    
    IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than b.length - off
    
    ZipException - if a ZIP file error has occurred
    
    IOException - if an I/O error has occurred
    
    SecurityException - if any of the jar file entries are incorrectly signed.
    
    另请参阅:
    
    FilterInputStream.in
  - createZipEntry
```
protected ZipEntry createZipEntry(String name)
```
    Creates a new JarEntry (ZipEntry) for the specified JAR file entry name. The manifest attributes of the specified JAR file entry name will be copied to the new JarEntry.
    
    覆盖:
    
    createZipEntry 在类中 ZipInputStream
    
    参数:
    
    name - the name of the JAR/ZIP file entry
    
    返回:
    
    the JarEntry object just created

类 JarInputStream

字段概要

从类继承的字段 java.io.FilterInputStream

从类继承的字段 java.util.zip.InflaterInputStream

构造器概要

方法概要

从类继承的方法 java.io.FilterInputStream

从类继承的方法 java.util.zip.InflaterInputStream

从类继承的方法 java.lang.Object

从类继承的方法 java.util.zip.ZipInputStream

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

构造器详细资料

JarInputStream

JarInputStream

方法详细资料

getManifest

getNextEntry

getNextJarEntry

read

createZipEntry