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## org.springframework.remoting.caucho
Class HessianClientInterceptor

    java.lang.Object
      org.springframework.remoting.support.RemotingSupport
          org.springframework.remoting.support.RemoteAccessor
              org.springframework.remoting.support.UrlBasedRemoteAccessor
                  org.springframework.remoting.caucho.HessianClientInterceptor

All Implemented Interfaces:
  Advice, Interceptor, MethodInterceptor, Aware, BeanClassLoaderAware, InitializingBean

Direct Known Subclasses:
  HessianProxyFactoryBean

    public class HessianClientInterceptor

extends UrlBasedRemoteAccessor
implements MethodInterceptor

`MethodInterceptor` for accessing a Hessian service. Supports authentication via username and password. The service URL must be an HTTP URL exposing a Hessian service.

Hessian is a slim, binary RPC protocol. For information on Hessian, see the Hessian website

Note: There is no requirement for services accessed with this proxy factory to have been exported using Spring's `HessianServiceExporter`, as there is no special handling involved. As a consequence, you can also access services that have been exported using Caucho's `HessianServlet`.

Since:
  29.09.2003
Author:
  Juergen Hoeller
See Also:
  `RemoteAccessor.setServiceInterface(java.lang.Class)`, `UrlBasedRemoteAccessor.setServiceUrl(java.lang.String)`, `setUsername(java.lang.String)`, `setPassword(java.lang.String)`, `HessianServiceExporter`, `HessianProxyFactoryBean`, `HessianProxyFactory`, `HessianServlet`

Field Summary

Fields inherited from class org.springframework.remoting.support.RemotingSupport
`logger`

Constructor Summary
`HessianClientInterceptor()`

Method Summary
`void` | `afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`protected RemoteAccessException` | `convertHessianAccessException(Throwable ex)` Convert the given Hessian access exception to an appropriate Spring RemoteAccessException.
`protected Object` | `createHessianProxy(com.caucho.hessian.client.HessianProxyFactory proxyFactory)` Create the Hessian proxy that is wrapped by this interceptor.
`Object` | `invoke(MethodInvocation invocation)`
`void` | `prepare()` Initialize the Hessian proxy for this interceptor.
`void` | `setChunkedPost(boolean chunkedPost)` Set whether to use a chunked post for sending a Hessian request.
`void` | `setDebug(boolean debug)` Set whether Hessian's debug mode should be enabled.
`void` | `setHessian2(boolean hessian2)` Set whether version 2 of the Hessian protocol should be used for parsing requests and replies.
`void` | `setHessian2Reply(boolean hessian2)` Set whether version 2 of the Hessian protocol should be used for parsing replies.
`void` | `setHessian2Request(boolean hessian2)` Set whether version 2 of the Hessian protocol should be used for parsing requests.
`void` | `setOverloadEnabled(boolean overloadEnabled)` Set whether overloaded methods should be enabled for remote invocations.
`void` | `setPassword(String password)` Set the password that this factory should use to access the remote service.
`void` | `setProxyFactory(com.caucho.hessian.client.HessianProxyFactory proxyFactory)` Set the HessianProxyFactory instance to use.
`void` | `setReadTimeout(long timeout)` Set the timeout to use when waiting for a reply from the Hessian service.
`void` | `setSendCollectionType(boolean sendCollectionType)` Set whether to send the Java collection type for each serialized collection.
`void` | `setSerializerFactory(com.caucho.hessian.io.SerializerFactory serializerFactory)` Specify the Hessian SerializerFactory to use.
`void` | `setUsername(String username)` Set the username that this factory should use to access the remote service.

Methods inherited from class org.springframework.remoting.support.UrlBasedRemoteAccessor
`getServiceUrl, setServiceUrl`

Methods inherited from class org.springframework.remoting.support.RemoteAccessor
`getServiceInterface, setServiceInterface`

Methods inherited from class org.springframework.remoting.support.RemotingSupport
`getBeanClassLoader, overrideThreadContextClassLoader, resetThreadContextClassLoader, setBeanClassLoader`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### HessianClientInterceptor

    public HessianClientInterceptor()

Method Detail

### setProxyFactory

    public void setProxyFactory(com.caucho.hessian.client.HessianProxyFactory proxyFactory)

  Set the HessianProxyFactory instance to use. If not specified, a default HessianProxyFactory will be created.

  Allows to use an externally configured factory instance, in particular a custom HessianProxyFactory subclass.

### setSerializerFactory

    public void setSerializerFactory(com.caucho.hessian.io.SerializerFactory serializerFactory)

  Specify the Hessian SerializerFactory to use.

  This will typically be passed in as an inner bean definition of type `com.caucho.hessian.io.SerializerFactory`, with custom bean property values applied.

### setSendCollectionType

    public void setSendCollectionType(boolean sendCollectionType)

  Set whether to send the Java collection type for each serialized collection. Default is "true".

### setOverloadEnabled

    public void setOverloadEnabled(boolean overloadEnabled)

  Set whether overloaded methods should be enabled for remote invocations. Default is "false".

  See Also:
    `HessianProxyFactory.setOverloadEnabled(boolean)`

### setUsername

    public void setUsername(String username)

  Set the username that this factory should use to access the remote service. Default is none.

  The username will be sent by Hessian via HTTP Basic Authentication.

  See Also:
    `HessianProxyFactory.setUser(java.lang.String)`

### setPassword

    public void setPassword(String password)

  Set the password that this factory should use to access the remote service. Default is none.

  The password will be sent by Hessian via HTTP Basic Authentication.

  See Also:
    `HessianProxyFactory.setPassword(java.lang.String)`

### setDebug

    public void setDebug(boolean debug)

  Set whether Hessian's debug mode should be enabled. Default is "false".

  See Also:
    `HessianProxyFactory.setDebug(boolean)`

### setChunkedPost

    public void setChunkedPost(boolean chunkedPost)

  Set whether to use a chunked post for sending a Hessian request.

  See Also:
    `HessianProxyFactory.setChunkedPost(boolean)`

### setReadTimeout

    public void setReadTimeout(long timeout)

  Set the timeout to use when waiting for a reply from the Hessian service.

  See Also:
    `HessianProxyFactory.setReadTimeout(long)`

### setHessian2

    public void setHessian2(boolean hessian2)

  Set whether version 2 of the Hessian protocol should be used for parsing requests and replies. Default is "false".

  See Also:
    `HessianProxyFactory.setHessian2Request(boolean)`

### setHessian2Request

    public void setHessian2Request(boolean hessian2)

  Set whether version 2 of the Hessian protocol should be used for parsing requests. Default is "false".

  See Also:
    `HessianProxyFactory.setHessian2Request(boolean)`

### setHessian2Reply

    public void setHessian2Reply(boolean hessian2)

  Set whether version 2 of the Hessian protocol should be used for parsing replies. Default is "false".

  See Also:
    `HessianProxyFactory.setHessian2Reply(boolean)`

### afterPropertiesSet

    public void afterPropertiesSet()

  Description copied from interface: `InitializingBean`
  Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

  This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

  Specified by:
    `afterPropertiesSet` in interface `InitializingBean`
  Overrides:
    `afterPropertiesSet` in class `UrlBasedRemoteAccessor`

### prepare

    public void prepare()
                 throws RemoteLookupFailureException

  Initialize the Hessian proxy for this interceptor.

  Throws:
    `RemoteLookupFailureException` - if the service URL is invalid

### createHessianProxy

    protected Object createHessianProxy(com.caucho.hessian.client.HessianProxyFactory proxyFactory)
                                 throws MalformedURLException

  Create the Hessian proxy that is wrapped by this interceptor.

  Parameters:
    `proxyFactory` - the proxy factory to use
  Returns:
    the Hessian proxy
  Throws:
    `MalformedURLException` - if thrown by the proxy factory
  See Also:
    `HessianProxyFactory.create(java.lang.String)`

### invoke

    public Object invoke(MethodInvocation invocation)
                  throws Throwable

  Specified by:
    `invoke` in interface `MethodInterceptor`
  Throws:
    `Throwable`

### convertHessianAccessException

    protected RemoteAccessException convertHessianAccessException(Throwable ex)

  Convert the given Hessian access exception to an appropriate Spring RemoteAccessException.

  Parameters:
    `ex` - the exception to convert
  Returns:
    the RemoteAccessException to throw

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