Upgrade javax.servlet dependency to 3.0 for .web

In support of SPR-7672 which will support code-based configuration
alternatives to web.xml using new features in the Servlet 3.0 API.

This upgrade does *not* force Spring users to upgrade to Servlet 3.0
capable containers.  Compatibility with and support for
javax.servlet >= 2.4 remains.

Issue: SPR-7672

org.springframework.web/src/test/java/org/springframework/mock/web/MockHttpServletRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2009 the original author or authors.
+ * Copyright 2002-2011 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.
@@ -18,6 +18,7 @@ package org.springframework.mock.web;
 
 import java.io.BufferedReader;
 import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
@@ -34,19 +35,28 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
+
+import javax.servlet.AsyncContext;
+import javax.servlet.DispatcherType;
 import javax.servlet.RequestDispatcher;
 import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
 import javax.servlet.ServletInputStream;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
 import javax.servlet.http.Cookie;
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
+import javax.servlet.http.Part;
 
 import org.springframework.util.Assert;
 import org.springframework.util.LinkedCaseInsensitiveMap;
 
 /**
  * Mock implementation of the {@link javax.servlet.http.HttpServletRequest}
- * interface. Supports the Servlet 2.5 API level.
+ * interface. Supports the Servlet 2.5 API level; throws
+ * {@link UnsupportedOperationException} for all methods introduced in Servlet 3.0.
  *
  * <p>Used for testing the web framework; also useful for testing
  * application controllers.
@@ -55,6 +65,7 @@ import org.springframework.util.LinkedCaseInsensitiveMap;
  * @author Rod Johnson
  * @author Rick Evans
  * @author Mark Fisher
+ * @author Chris Beams
  * @since 1.0.2
  */
 public class MockHttpServletRequest implements HttpServletRequest {
@@ -847,4 +858,53 @@ public class MockHttpServletRequest implements HttpServletRequest {
 		return isRequestedSessionIdFromURL();
 	}
 
+
+	//---------------------------------------------------------------------
+	// Methods introduced in Servlet 3.0
+	//---------------------------------------------------------------------
+
+	public AsyncContext getAsyncContext() {
+		throw new UnsupportedOperationException();
+	}
+
+	public DispatcherType getDispatcherType() {
+		throw new UnsupportedOperationException();
+	}
+
+	public boolean isAsyncSupported() {
+		throw new UnsupportedOperationException();
+	}
+
+	public AsyncContext startAsync() {
+		throw new UnsupportedOperationException();
+	}
+
+	public AsyncContext startAsync(ServletRequest arg0, ServletResponse arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public boolean isAsyncStarted() {
+		throw new UnsupportedOperationException();
+	}
+
+	public boolean authenticate(HttpServletResponse arg0) throws IOException, ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public Part getPart(String arg0) throws IOException, IllegalStateException, ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public Collection<Part> getParts() throws IOException, IllegalStateException, ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public void login(String arg0, String arg1) throws ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public void logout() throws ServletException {
+		throw new UnsupportedOperationException();
+	}
+
 }

org.springframework.web/src/test/java/org/springframework/mock/web/MockHttpServletResponse.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 the original author or authors.
+ * Copyright 2002-2011 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.
@@ -39,7 +39,7 @@ import org.springframework.web.util.WebUtils;
 
 /**
  * Mock implementation of the {@link javax.servlet.http.HttpServletResponse}
- * interface. Supports the Servlet 2.5 API level.
+ * interface. Supports the Servlet 3.0 API level
  *
  * <p>Used for testing the web framework; also useful for testing
  * application controllers.
@@ -292,9 +292,9 @@ public class MockHttpServletResponse implements HttpServletResponse {
 	 * @param name the name of the header
 	 * @return the associated header value, or <code>null<code> if none
 	 */
-	public Object getHeader(String name) {
+	public String getHeader(String name) {
 		HeaderValueHolder header = HeaderValueHolder.getByName(this.headers, name);
-		return (header != null ? header.getValue() : null);
+		return (header != null ? header.getValue().toString() : null);
 	}
 
 	/**
@@ -302,9 +302,9 @@ public class MockHttpServletResponse implements HttpServletResponse {
 	 * @param name the name of the header
 	 * @return the associated header values, or an empty List if none
 	 */
-	public List<Object> getHeaders(String name) {
+	public List<String> getHeaders(String name) {
 		HeaderValueHolder header = HeaderValueHolder.getByName(this.headers, name);
-		return (header != null ? header.getValues() : Collections.emptyList());
+		return (header != null ? header.getStringValues() : Collections.<String>emptyList());
 	}
 
 	/**

org.springframework.web/src/test/java/org/springframework/mock/web/MockServletContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2010 the original author or authors.
+ * Copyright 2002-2011 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.
@@ -23,6 +23,7 @@ import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.Collections;
 import java.util.Enumeration;
+import java.util.EventListener;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
@@ -30,9 +31,17 @@ import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
 import javax.activation.FileTypeMap;
+import javax.servlet.Filter;
+import javax.servlet.FilterRegistration;
+import javax.servlet.FilterRegistration.Dynamic;
 import javax.servlet.RequestDispatcher;
 import javax.servlet.Servlet;
 import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRegistration;
+import javax.servlet.SessionCookieConfig;
+import javax.servlet.SessionTrackingMode;
+import javax.servlet.descriptor.JspConfigDescriptor;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
@@ -67,8 +76,12 @@ import org.springframework.web.util.WebUtils;
  * and XmlWebApplicationContext with an underlying MockServletContext (as long as
  * the MockServletContext has been configured with a FileSystemResourceLoader).
  *
+ * Supports the Servlet 3.0 API level, but throws {@link UnsupportedOperationException}
+ * for all methods introduced in Servlet 3.0.
+ *
  * @author Rod Johnson
  * @author Juergen Hoeller
+ * @author Chris Beams
  * @since 1.0.2
  * @see #MockServletContext(org.springframework.core.io.ResourceLoader)
  * @see org.springframework.web.context.support.XmlWebApplicationContext
@@ -361,4 +374,119 @@ public class MockServletContext implements ServletContext {
 		}
 	}
 
+
+	//---------------------------------------------------------------------
+	// Methods introduced in Servlet 3.0
+	//---------------------------------------------------------------------
+
+	public Dynamic addFilter(String arg0, String arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public Dynamic addFilter(String arg0, Filter arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public Dynamic addFilter(String arg0, Class<? extends Filter> arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public void addListener(Class<? extends EventListener> arg0) {
+		throw new UnsupportedOperationException();
+	}
+
+	public void addListener(String arg0) {
+		throw new UnsupportedOperationException();
+	}
+
+	public <T extends EventListener> void addListener(T arg0) {
+		throw new UnsupportedOperationException();
+	}
+
+	public javax.servlet.ServletRegistration.Dynamic addServlet(String arg0, String arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public javax.servlet.ServletRegistration.Dynamic addServlet(String arg0,
+			Servlet arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public javax.servlet.ServletRegistration.Dynamic addServlet(String arg0,
+			Class<? extends Servlet> arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public <T extends Filter> T createFilter(Class<T> arg0)
+			throws ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public <T extends EventListener> T createListener(Class<T> arg0)
+			throws ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public <T extends Servlet> T createServlet(Class<T> arg0)
+			throws ServletException {
+		throw new UnsupportedOperationException();
+	}
+
+	public void declareRoles(String... arg0) {
+		throw new UnsupportedOperationException();
+	}
+
+	public ClassLoader getClassLoader() {
+		throw new UnsupportedOperationException();
+	}
+
+	public Set<SessionTrackingMode> getDefaultSessionTrackingModes() {
+		throw new UnsupportedOperationException();
+	}
+
+	public int getEffectiveMajorVersion() {
+		throw new UnsupportedOperationException();
+	}
+
+	public int getEffectiveMinorVersion() {
+		throw new UnsupportedOperationException();
+	}
+
+	public Set<SessionTrackingMode> getEffectiveSessionTrackingModes() {
+		throw new UnsupportedOperationException();
+	}
+
+	public FilterRegistration getFilterRegistration(String arg0) {
+		throw new UnsupportedOperationException();
+	}
+
+	public Map<String, ? extends FilterRegistration> getFilterRegistrations() {
+		throw new UnsupportedOperationException();
+	}
+
+	public JspConfigDescriptor getJspConfigDescriptor() {
+		throw new UnsupportedOperationException();
+	}
+
+	public ServletRegistration getServletRegistration(String arg0) {
+		throw new UnsupportedOperationException();
+	}
+
+	public Map<String, ? extends ServletRegistration> getServletRegistrations() {
+		throw new UnsupportedOperationException();
+	}
+
+	public SessionCookieConfig getSessionCookieConfig() {
+		throw new UnsupportedOperationException();
+	}
+
+	public boolean setInitParameter(String arg0, String arg1) {
+		throw new UnsupportedOperationException();
+	}
+
+	public void setSessionTrackingModes(Set<SessionTrackingMode> arg0)
+			throws IllegalStateException, IllegalArgumentException {
+		throw new UnsupportedOperationException();
+	}
+
 }

org.springframework.web/src/test/java/org/springframework/web/context/request/ServletWebRequestTests.java

@@ -136,7 +136,7 @@ public class ServletWebRequestTests {
 		request.checkNotModified(currentTime);
 
 		assertEquals(200, servletResponse.getStatus());
-		assertEquals(currentTime, servletResponse.getHeader("Last-Modified"));
+		assertEquals(""+currentTime, servletResponse.getHeader("Last-Modified"));
 	}
 
 	@Test