java.lang.Object | ||||
↳ | java.io.InputStream | |||
↳ | java.io.ObjectInputStream | |||
↳ | org.springframework.core.ConfigurableObjectInputStream | |||
↳ | org.springframework.remoting.rmi.CodebaseAwareObjectInputStream |
Special ObjectInputStream subclass that falls back to a specified codebase to load classes from if not found locally. In contrast to standard RMI conventions for dynamic class download, it is the client that determines the codebase URL here, rather than the "java.rmi.server.codebase" system property on the server.
Uses the JDK's RMIClassLoader to load classes from the specified codebase. The codebase can consist of multiple URLs, separated by spaces. Note that RMIClassLoader requires a SecurityManager to be set, like when using dynamic class download with standard RMI! (See the RMI documentation for details.)
Despite residing in the RMI package, this class is not used for RmiClientInterceptor, which uses the standard RMI infrastructure instead and thus is only able to rely on RMI's standard dynamic class download via "java.rmi.server.codebase". CodebaseAwareObjectInputStream is used by HttpInvokerClientInterceptor (see the "codebaseUrl" property there).
Thanks to Lionel Mestre for suggesting the option and providing a prototype!
createObjectInputStream(InputStream)
setCodebaseUrl(String)
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Inherited Constants | |||||||||||
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From interface
java.io.ObjectStreamConstants
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Inherited Fields | |||||||||||
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From interface
java.io.ObjectStreamConstants
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Public Constructors | |||||||||||
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Create a new CodebaseAwareObjectInputStream for the given InputStream and codebase.
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Create a new CodebaseAwareObjectInputStream for the given InputStream and codebase.
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Protected Methods | |||||||||||
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Return the fallback ClassLoader to use when no ClassLoader was specified
and ObjectInputStream's own default ClassLoader failed.
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Resolve the given class name against a fallback class loader.
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Inherited Methods | |||||||||||
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From class
org.springframework.core.ConfigurableObjectInputStream
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From class
java.io.ObjectInputStream
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From class
java.io.InputStream
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From class
java.lang.Object
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From interface
java.io.Closeable
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From interface
java.io.DataInput
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From interface
java.io.ObjectInput
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Create a new CodebaseAwareObjectInputStream for the given InputStream and codebase.
in | the InputStream to read from |
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codebaseUrl | the codebase URL to load classes from if not found locally (can consist of multiple URLs, separated by spaces) |
IOException |
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Create a new CodebaseAwareObjectInputStream for the given InputStream and codebase.
in | the InputStream to read from |
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classLoader | the ClassLoader to use for loading local classes
(may be null to indicate RMI's default ClassLoader) |
codebaseUrl | the codebase URL to load classes from if not found locally (can consist of multiple URLs, separated by spaces) |
IOException |
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Return the fallback ClassLoader to use when no ClassLoader was specified and ObjectInputStream's own default ClassLoader failed.
The default implementation simply returns null
.
IOException |
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Resolve the given class name against a fallback class loader.
The default implementation simply rethrows the original exception, since there is no fallback available.
className | the class name to resolve |
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ex | the original exception thrown when attempting to load the class |
null
)