ConversionServiceExposingInterceptor (Spring Framework 4.3.30.RELEASE API)

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

所有已实现的接口:
AsyncHandlerInterceptor, 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.
从以下版本开始:
3.0.1
作者:
Keith Donald

构造器概要
构造器
构造器说明
ConversionServiceExposingInterceptor(ConversionService conversionService)
Creates a new ConversionServiceExposingInterceptor.

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`boolean`	`preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)`	This implementation always returns `true`.

从类继承的方法 org.springframework.web.servlet.handler.HandlerInterceptorAdapter
afterCompletion, afterConcurrentHandlingStarted, postHandle

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ConversionServiceExposingInterceptor
```
public ConversionServiceExposingInterceptor(ConversionService conversionService)
```
    Creates a new ConversionServiceExposingInterceptor.
    参数:
    conversionService - the conversion service to export to request scope when this interceptor is invoked
- 方法详细资料
  - preHandle
```
public boolean preHandle(HttpServletRequest request,
                         HttpServletResponse response,
                         Object handler)
                  throws ServletException,
                         IOException
```
    从类复制的说明: HandlerInterceptorAdapter
    This implementation always returns true.
    指定者:
    preHandle 在接口中 HandlerInterceptor
    覆盖:
    preHandle 在类中 HandlerInterceptorAdapter
    参数:
    request - current HTTP request
    response - current HTTP response
    handler - chosen handler to execute, for type and/or instance evaluation
    返回:
    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.
    抛出:
    ServletException
    IOException