changed contentLength() from int to long

org.springframework.core/src/main/java/org/springframework/core/io/AbstractFileResolvingResource.java

@@ -129,7 +129,7 @@ public abstract class AbstractFileResolvingResource extends AbstractResource {
 	}
 
 	@Override
-	public int contentLength() throws IOException {
+	public long contentLength() throws IOException {
 		URL url = getURL();
 		if (ResourceUtils.isFileURL(url)) {
 			// Proceed with file system resolution...

org.springframework.core/src/main/java/org/springframework/core/io/AbstractResource.java

@@ -112,8 +112,8 @@ public abstract class AbstractResource implements Resource {
 	 * if available.
 	 * @see #getFile()
 	 */
-	public int contentLength() throws IOException {
-		return (int) getFile().length();
+	public long contentLength() throws IOException {
+		return getFile().length();
 	}
 
 	/**

org.springframework.core/src/main/java/org/springframework/core/io/Resource.java

@@ -96,7 +96,7 @@ public interface Resource extends InputStreamSource {
 	 * @throws IOException if the resource cannot be resolved
 	 * (in the file system or as some other known physical resource type)
 	 */
-	int contentLength() throws IOException;
+	long contentLength() throws IOException;
 
 	/**
 	 * Determine the last-modified timestamp for this resource.

org.springframework.web.servlet/src/main/java/org/springframework/web/servlet/resource/ResourceHttpRequestHandler.java

@@ -148,7 +148,11 @@ public class ResourceHttpRequestHandler extends WebContentGenerator implements H
 		if (mediaType != null) {
 			response.setContentType(mediaType.toString());
 		}
-		response.setContentLength(resource.contentLength());
+		long length = resource.contentLength();
+		if (length > Integer.MAX_VALUE) {
+			throw new IOException("Resource content too long (beyond Integer.MAX_VALUE): " + resource);
+		}
+		response.setContentLength((int) length);
 		FileCopyUtils.copy(resource.getInputStream(), response.getOutputStream());
 	}