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WebRequest is a resolvable dependency in Servlet/Portlet web application contexts (SPR-6727)

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This commit is contained in:
Juergen Hoeller
2010-01-20 22:09:13 +00:00
parent 1b6f3f1f22
commit 0a6f2348b8
4 changed files with 87 additions and 26 deletions
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53
org.springframework.web/src/main/java/org/springframework/web/context/support/WebApplicationContextUtils.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2009 the original author or authors.
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -38,7 +38,9 @@ import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.RequestScope;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.context.request.ServletWebRequest;
import org.springframework.web.context.request.SessionScope;
import org.springframework.web.context.request.WebRequest;
/**
* Convenience methods for retrieving the root
@@ -153,6 +155,7 @@ public abstract class WebApplicationContextUtils {
beanFactory.registerResolvableDependency(ServletRequest.class, new RequestObjectFactory());
beanFactory.registerResolvableDependency(HttpSession.class, new SessionObjectFactory());
beanFactory.registerResolvableDependency(WebRequest.class, new WebRequestObjectFactory());
if (jsfPresent) {
FacesDependencyRegistrar.registerFacesDependencies(beanFactory);
}
@@ -220,6 +223,18 @@ public abstract class WebApplicationContextUtils {
}
}
/**
* Return the current RequestAttributes instance as ServletRequestAttributes.
* @see RequestContextHolder#currentRequestAttributes()
*/
private static ServletRequestAttributes currentRequestAttributes() {
RequestAttributes requestAttr = RequestContextHolder.currentRequestAttributes();
if (!(requestAttr instanceof ServletRequestAttributes)) {
throw new IllegalStateException("Current request is not a servlet request");
}
return (ServletRequestAttributes) requestAttr;
}
/**
* Factory that exposes the current request object on demand.
@@ -227,11 +242,7 @@ public abstract class WebApplicationContextUtils {
private static class RequestObjectFactory implements ObjectFactory<ServletRequest>, Serializable {
public ServletRequest getObject() {
RequestAttributes requestAttr = RequestContextHolder.currentRequestAttributes();
if (!(requestAttr instanceof ServletRequestAttributes)) {
throw new IllegalStateException("Current request is not a servlet request");
}
return ((ServletRequestAttributes) requestAttr).getRequest();
return currentRequestAttributes().getRequest();
}
@Override
@@ -247,11 +258,7 @@ public abstract class WebApplicationContextUtils {
private static class SessionObjectFactory implements ObjectFactory<HttpSession>, Serializable {
public HttpSession getObject() {
RequestAttributes requestAttr = RequestContextHolder.currentRequestAttributes();
if (!(requestAttr instanceof ServletRequestAttributes)) {
throw new IllegalStateException("Current request is not a servlet request");
}
return ((ServletRequestAttributes) requestAttr).getRequest().getSession();
return currentRequestAttributes().getRequest().getSession();
}
@Override
@@ -261,6 +268,22 @@ public abstract class WebApplicationContextUtils {
}
/**
* Factory that exposes the current WebRequest object on demand.
*/
private static class WebRequestObjectFactory implements ObjectFactory<WebRequest>, Serializable {
public WebRequest getObject() {
return new ServletWebRequest(currentRequestAttributes().getRequest());
}
@Override
public String toString() {
return "Current ServletWebRequest";
}
}
/**
* Inner class to avoid hard-coded JSF dependency.
*/
@@ -271,11 +294,19 @@ public abstract class WebApplicationContextUtils {
public FacesContext getObject() {
return FacesContext.getCurrentInstance();
}
@Override
public String toString() {
return "Current JSF FacesContext";
}
});
beanFactory.registerResolvableDependency(ExternalContext.class, new ObjectFactory<ExternalContext>() {
public ExternalContext getObject() {
return FacesContext.getCurrentInstance().getExternalContext();
}
@Override
public String toString() {
return "Current JSF ExternalContext";
}
});
}
}