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## org.springframework.web.servlet.handler
Class ConversionServiceExposingInterceptor

    java.lang.Object
      org.springframework.web.servlet.handler.HandlerInterceptorAdapter
          org.springframework.web.servlet.handler.ConversionServiceExposingInterceptor

All Implemented Interfaces:
  HandlerInterceptor

    public class ConversionServiceExposingInterceptor

extends HandlerInterceptorAdapter

Interceptor that places the configured `ConversionService` in request scope so it's available during request processing. The request attribute name is "org.springframework.core.convert.ConversionService", the value of `ConversionService.class.getName()`.

Mainly for use within JSP tags such as the spring:eval tag.

Since:
  3.0.1
Author:
  Keith Donald

Constructor Summary
`ConversionServiceExposingInterceptor(ConversionService conversionService)` Creates a new `ConversionServiceExposingInterceptor`.

Method Summary
`boolean` | `preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)` This implementation always returns `true`.

Methods inherited from class org.springframework.web.servlet.handler.HandlerInterceptorAdapter
`afterCompletion, postHandle`

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

Constructor Detail

### ConversionServiceExposingInterceptor

    public ConversionServiceExposingInterceptor(ConversionService conversionService)

  Creates a new `ConversionServiceExposingInterceptor`.

  Parameters:
    `conversionService` - the conversion service to export to request scope when this interceptor is invoked

Method Detail

### preHandle

    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler)
                      throws ServletException,
                             IOException

  Description copied from class: `HandlerInterceptorAdapter`
  This implementation always returns `true`.

  Specified by:
    `preHandle` in interface `HandlerInterceptor`
  Overrides:
    `preHandle` in class `HandlerInterceptorAdapter`
  Parameters:
    `request` - current HTTP request
    `response` - current HTTP response
    `handler` - chosen handler to execute, for type and/or instance evaluation
  Returns:
    `true` if the execution chain should proceed with the next interceptor or the handler itself. Else, DispatcherServlet assumes that this interceptor has already dealt with the response itself.
  Throws:
    `ServletException`
    `IOException`

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