org.springframework.web.servlet.handler

Class ConversionServiceExposingInterceptor

java.lang.Object

org.springframework.web.servlet.handler.ConversionServiceExposingInterceptor

All Implemented Interfaces:

HandlerInterceptor

public class ConversionServiceExposingInterceptor
extends Object
implements HandlerInterceptor

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

Constructors

Constructor and Description
ConversionServiceExposingInterceptor(ConversionService conversionService) Creates a new ConversionServiceExposingInterceptor.

Method Summary

Modifier and Type	Method and Description
boolean	preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) Interception point before the execution of a handler.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.web.servlet.HandlerInterceptor

afterCompletion, postHandle

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 interface: HandlerInterceptor

Interception point before the execution of a handler. Called after HandlerMapping determined an appropriate handler object, but before HandlerAdapter invokes the handler.

DispatcherServlet processes a handler in an execution chain, consisting of any number of interceptors, with the handler itself at the end. With this method, each interceptor can decide to abort the execution chain, typically sending an HTTP error or writing a custom response.

Note: special considerations apply for asynchronous request processing. For more details see AsyncHandlerInterceptor.

The default implementation returns true.

Specified by:

preHandle in interface HandlerInterceptor

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