ServletContextAttributeExporter (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.web.context.support
Class ServletContextAttributeExporter

java.lang.Object
  org.springframework.web.context.support.ServletContextAttributeExporter

All Implemented Interfaces:: ServletContextAware

public class ServletContextAttributeExporter
extends Object
implements ServletContextAware
extends Object
implements ServletContextAware

Exporter that takes Spring-defined objects and exposes them as ServletContext attributes. Usually, bean references will be used to export Spring-defined beans as ServletContext attributes.

Useful to make Spring-defined beans available to code that is not aware of Spring at all, but rather just of the Servlet API. Client code can then use plain ServletContext attribute lookups to access those objects, despite them being defined in a Spring application context.

Alternatively, consider using the WebApplicationContextUtils class to access Spring-defined beans via the WebApplicationContext interface. This makes client code aware of Spring API, of course.

Since:: 1.1.4
Author:: Juergen Hoeller
See Also:: ServletContext.getAttribute(java.lang.String), WebApplicationContextUtils.getWebApplicationContext(javax.servlet.ServletContext)

Field Summary

protected Log logger


Constructor Summary

ServletContextAttributeExporter()


Method Summary

void setAttributes(Map attributes)
          Set the ServletContext attributes to expose as key-value pairs.

void setServletContext(ServletContext servletContext)
          Set the ServletContext that this object runs in.

Methods inherited from class java.lang.Object

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

Field Summary
`protected Log`	`logger`

Constructor Summary
`ServletContextAttributeExporter()`

Method Summary
`void`	`setAttributes(Map attributes)` Set the ServletContext attributes to expose as key-value pairs.
`void`	`setServletContext(ServletContext servletContext)` Set the ServletContext that this object runs in.

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

Field Detail

logger

protected final Log logger

Constructor Detail

ServletContextAttributeExporter

public ServletContextAttributeExporter()

Method Detail

setAttributes

public void setAttributes(Map attributes)

Set the ServletContext attributes to expose as key-value pairs. Each key will be considered a ServletContext attributes key, and each value will be used as corresponding attribute value.

Usually, you will use bean references for the values, to export Spring-defined beans as ServletContext attributes. Of course, it is also possible to define plain values to export.

Parameters:: attributes - Map with String keys and Object values

setServletContext

public void setServletContext(ServletContext servletContext)

Description copied from interface: ServletContextAware

Set the ServletContext that this object runs in.

Invoked after population of normal bean properties but before an init callback like InitializingBean's afterPropertiesSet or a custom init-method. Invoked after ApplicationContextAware's setApplicationContext.