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SEC-3158 findRequiredWebApplicationContext() compatibility with spring framework 4.1.x

This commit is contained in:
Alex Panchenko 2015-12-01 12:51:07 +06:00
parent ed01213a27
commit 3af4140742
1 changed files with 25 additions and 1 deletions
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26
web/src/main/java/org/springframework/security/web/context/support/SecurityWebApplicationContextUtils.java
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@ -15,6 +15,7 @@
*/ */
package org.springframework.security.web.context.support; package org.springframework.security.web.context.support;
import java.util.Enumeration;
import javax.servlet.ServletContext; import javax.servlet.ServletContext;
import org.springframework.web.context.WebApplicationContext; import org.springframework.web.context.WebApplicationContext;
@ -43,10 +44,33 @@ public abstract class SecurityWebApplicationContextUtils extends WebApplicationC
* @throws IllegalStateException if no WebApplicationContext can be found * @throws IllegalStateException if no WebApplicationContext can be found
*/ */
public static WebApplicationContext findRequiredWebApplicationContext(ServletContext servletContext) { public static WebApplicationContext findRequiredWebApplicationContext(ServletContext servletContext) {
WebApplicationContext wac = findWebApplicationContext(servletContext); WebApplicationContext wac = _findWebApplicationContext(servletContext);
if (wac == null) { if (wac == null) {
throw new IllegalStateException("No WebApplicationContext found: no ContextLoaderListener registered?"); throw new IllegalStateException("No WebApplicationContext found: no ContextLoaderListener registered?");
} }
return wac; return wac;
} }
/**
* Copy of {@link #findWebApplicationContext(ServletContext)} for compatibility with spring framework 4.1.x.
* @see #findWebApplicationContext(ServletContext)
*/
private static WebApplicationContext _findWebApplicationContext(ServletContext sc) {
WebApplicationContext wac = getWebApplicationContext(sc);
if (wac == null) {
Enumeration<String> attrNames = sc.getAttributeNames();
while (attrNames.hasMoreElements()) {
String attrName = attrNames.nextElement();
Object attrValue = sc.getAttribute(attrName);
if (attrValue instanceof WebApplicationContext) {
if (wac != null) {
throw new IllegalStateException("No unique WebApplicationContext found: more than one " +
"DispatcherServlet registered with publishContext=true?");
}
wac = (WebApplicationContext) attrValue;
}
}
}
return wac;
}
} }