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SSLContext (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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javax.net.ssl
Class SSLContext

java.lang.Object
  |
  +--javax.net.ssl.SSLContext

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public class SSLContext

extends Object

Instances of this class represent a secure socket protocol implementation which acts as a factory for secure socket factories. This class is initialized with an optional set of key and trust managers and source of secure random bytes.

Since:

1.4

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Constructor Summary
protected	SSLContext(SSLContextSpi contextSpi, Provider provider, String protocol)           Creates an SSLContext object.

 

Method Summary
SSLSessionContext	getClientSessionContext()           Returns the client session context, which represents the set of SSL sessions available for use during the handshake phase of client-side SSL sockets.
static SSLContext	getInstance(String protocol)           Generates a SSLContext object that implements the specified secure socket protocol.
static SSLContext	getInstance(String protocol, Provider provider)           Generates a SSLContext object that implements the specified secure socket protocol from the specified provider.
static SSLContext	getInstance(String protocol, String provider)           Generates a SSLContext object that implements the specified secure socket protocol from the specified provider.
String	getProtocol()           Returns the protocol name of this SSLContext object.
Provider	getProvider()           Returns the provider of this SSLContext object.
SSLSessionContext	getServerSessionContext()           Returns the server session context, which represents the set of SSL sessions available for use during the handshake phase of server-side SSL sockets.
SSLServerSocketFactory	getServerSocketFactory()           Returns a ServerSocketFactory object for this context.
SSLSocketFactory	getSocketFactory()           Returns a SocketFactory object for this context.
void	init(KeyManager[] km, TrustManager[] tm, SecureRandom random)           Initializes this context.

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

SSLContext

protected SSLContext(SSLContextSpi contextSpi,
                     Provider provider,
                     String protocol)

Creates an SSLContext object.

Parameters:

contextSpi - the delegate

provider - the provider

protocol - the protocol

Method Detail

getInstance

public static SSLContext getInstance(String protocol)
                              throws NoSuchAlgorithmException

Generates a SSLContext object that implements the specified secure socket protocol.

If the default provider package provides an implementation of the requested key management algorithm, an instance of SSLContext containing that implementation is returned. If the algorithm is not available in the default provider package, other provider packages are searched.

Parameters:

protocol - the standard name of the requested protocol.

Returns:

the new SSLContext object

Throws:

NoSuchAlgorithmException - if the specified protocol is not available in the default provider package or any of the other provider packages that were searched.

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getInstance

public static SSLContext getInstance(String protocol,
                                     String provider)
                              throws NoSuchAlgorithmException,
                                     NoSuchProviderException

Generates a SSLContext object that implements the specified secure socket protocol from the specified provider.

Parameters:

protocol - the standard name of the requested protocol.

provider - the name of the provider

Returns:

the new SSLContext object

Throws:

NoSuchAlgorithmException - if the specified protocol is not available from the specified provider.

NoSuchProviderException - if the specified provider has not been configured.

IllegalArgumentException - if provider is not specified

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getInstance

public static SSLContext getInstance(String protocol,
                                     Provider provider)
                              throws NoSuchAlgorithmException

Generates a SSLContext object that implements the specified secure socket protocol from the specified provider.

Parameters:

protocol - the standard name of the requested protocol.

provider - an instance of the provider

Returns:

the new SSLContext object

Throws:

NoSuchAlgorithmException - if the specified protocol is not available from the specified provider.

IllegalArgumentException - if provider is not specified

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getProtocol

public final String getProtocol()

Returns the protocol name of this SSLContext object.

This is the same name that was specified in one of the getInstance calls that created this SSLContext object.

Returns:

the protocol name of this SSLContext object.

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getProvider

public final Provider getProvider()

Returns the provider of this SSLContext object.

Returns:

the provider of this SSLContext object

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init

public final void init(KeyManager[] km,
                       TrustManager[] tm,
                       SecureRandom random)
                throws KeyManagementException

Initializes this context. Either of the first two parameters may be null in which case the installed security providers will be searched for the highest priority implementation of the appropriate factory. Likewise, the secure random parameter may be null in which case the default implementation will be used.

Only the first instance of a particular key and/or trust manager implementation type in the array is used. (For example, only the first javax.net.ssl.X509KeyManager in the array will be used.)

Parameters:

km - the sources of authentication keys or null

tm - the sources of peer authentication trust decisions or null

random - the source of randomness for this generator or null

Throws:

KeyManagementException - if this operation fails

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getSocketFactory

public final SSLSocketFactory getSocketFactory()

Returns a SocketFactory object for this context.

Returns:

the SocketFactory object

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getServerSocketFactory

public final SSLServerSocketFactory getServerSocketFactory()

Returns a ServerSocketFactory object for this context.

Returns:

the ServerSocketFactory object

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getServerSessionContext

public final SSLSessionContext getServerSessionContext()

Returns the server session context, which represents the set of SSL sessions available for use during the handshake phase of server-side SSL sockets.

This context may be unavailable in some environments, in which case this method returns null. For example, when the underlying SSL provider does not provide an implementation of SSLSessionContext interface, this method returns null. A non-null session context is returned otherwise.

Returns:

server session context bound to this SSL context

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getClientSessionContext

public final SSLSessionContext getClientSessionContext()

Returns the client session context, which represents the set of SSL sessions available for use during the handshake phase of client-side SSL sockets.

This context may be unavailable in some environments, in which case this method returns null. For example, when the underlying SSL provider does not provide an implementation of SSLSessionContext interface, this method returns null. A non-null session context is returned otherwise.

Returns:

client session context bound to this SSL context

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.