Merge branch '5.3.x'

spring-beans/src/main/java/org/springframework/beans/factory/xml/ParserContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -64,24 +64,24 @@ public final class ParserContext {
 	}
 
 
-	public final XmlReaderContext getReaderContext() {
+	public XmlReaderContext getReaderContext() {
 		return this.readerContext;
 	}
 
-	public final BeanDefinitionRegistry getRegistry() {
+	public BeanDefinitionRegistry getRegistry() {
 		return this.readerContext.getRegistry();
 	}
 
-	public final BeanDefinitionParserDelegate getDelegate() {
+	public BeanDefinitionParserDelegate getDelegate() {
 		return this.delegate;
 	}
 
 	@Nullable
-	public final BeanDefinition getContainingBeanDefinition() {
+	public BeanDefinition getContainingBeanDefinition() {
 		return this.containingBeanDefinition;
 	}
 
-	public final boolean isNested() {
+	public boolean isNested() {
 		return (this.containingBeanDefinition != null);
 	}
 

spring-context/src/main/java/org/springframework/context/annotation/ClassPathScanningCandidateComponentProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -16,6 +16,7 @@
 
 package org.springframework.context.annotation;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.lang.annotation.Annotation;
 import java.util.ArrayList;
@@ -424,40 +425,38 @@ public class ClassPathScanningCandidateComponentProvider implements EnvironmentC
 				if (traceEnabled) {
 					logger.trace("Scanning " + resource);
 				}
-				if (resource.isReadable()) {
-					try {
-						MetadataReader metadataReader = getMetadataReaderFactory().getMetadataReader(resource);
-						if (isCandidateComponent(metadataReader)) {
-							ScannedGenericBeanDefinition sbd = new ScannedGenericBeanDefinition(metadataReader);
-							sbd.setSource(resource);
-							if (isCandidateComponent(sbd)) {
-								if (debugEnabled) {
-									logger.debug("Identified candidate component class: " + resource);
-								}
-								candidates.add(sbd);
-							}
-							else {
-								if (debugEnabled) {
-									logger.debug("Ignored because not a concrete top-level class: " + resource);
-								}
+				try {
+					MetadataReader metadataReader = getMetadataReaderFactory().getMetadataReader(resource);
+					if (isCandidateComponent(metadataReader)) {
+						ScannedGenericBeanDefinition sbd = new ScannedGenericBeanDefinition(metadataReader);
+						sbd.setSource(resource);
+						if (isCandidateComponent(sbd)) {
+							if (debugEnabled) {
+								logger.debug("Identified candidate component class: " + resource);
 							}
+							candidates.add(sbd);
 						}
 						else {
-							if (traceEnabled) {
-								logger.trace("Ignored because not matching any filter: " + resource);
+							if (debugEnabled) {
+								logger.debug("Ignored because not a concrete top-level class: " + resource);
 							}
 						}
 					}
-					catch (Throwable ex) {
-						throw new BeanDefinitionStoreException(
-								"Failed to read candidate component class: " + resource, ex);
+					else {
+						if (traceEnabled) {
+							logger.trace("Ignored because not matching any filter: " + resource);
+						}
 					}
 				}
-				else {
+				catch (FileNotFoundException ex) {
 					if (traceEnabled) {
-						logger.trace("Ignored because not readable: " + resource);
+						logger.trace("Ignored non-readable " + resource + ": " + ex.getMessage());
 					}
 				}
+				catch (Throwable ex) {
+					throw new BeanDefinitionStoreException(
+							"Failed to read candidate component class: " + resource, ex);
+				}
 			}
 		}
 		catch (IOException ex) {

spring-context/src/main/java/org/springframework/scheduling/support/CronTrigger.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -105,11 +105,11 @@ public class CronTrigger implements Trigger {
 			}
 		}
 		else {
-			date = new Date();
+			date = new Date(triggerContext.getClock().millis());
 		}
 		ZonedDateTime dateTime = ZonedDateTime.ofInstant(date.toInstant(), this.zoneId);
 		ZonedDateTime next = this.expression.next(dateTime);
-		return next != null ? Date.from(next.toInstant()) : null;
+		return (next != null ? Date.from(next.toInstant()) : null);
 	}
 
 

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -88,7 +88,15 @@ public abstract class AbstractFileResolvingResource extends AbstractResource {
 	@Override
 	public boolean isReadable() {
 		try {
-			URL url = getURL();
+			return checkReadable(getURL());
+		}
+		catch (IOException ex) {
+			return false;
+		}
+	}
+
+	boolean checkReadable(URL url) {
+		try {
 			if (ResourceUtils.isFileURL(url)) {
 				// Proceed with file system resolution
 				File file = getFile();

spring-core/src/main/java/org/springframework/core/io/ClassPathResource.java

@@ -142,6 +142,18 @@ public class ClassPathResource extends AbstractFileResolvingResource {
 		return (resolveURL() != null);
 	}
 
+	/**
+	 * This implementation checks for the resolution of a resource URL upfront,
+	 * then proceeding with {@link AbstractFileResolvingResource}'s length check.
+	 * @see java.lang.ClassLoader#getResource(String)
+	 * @see java.lang.Class#getResource(String)
+	 */
+	@Override
+	public boolean isReadable() {
+		URL url = resolveURL();
+		return (url != null && checkReadable(url));
+	}
+
 	/**
 	 * Resolves a URL for the underlying class path resource.
 	 * @return the resolved URL, or {@code null} if not resolvable

spring-core/src/main/java/org/springframework/core/io/InputStreamSource.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -48,8 +48,9 @@ public interface InputStreamSource {
 	 * creating mail attachments. For such a use case, it is <i>required</i>
 	 * that each {@code getInputStream()} call returns a fresh stream.
 	 * @return the input stream for the underlying resource (must not be {@code null})
-	 * @throws java.io.FileNotFoundException if the underlying resource doesn't exist
+	 * @throws java.io.FileNotFoundException if the underlying resource does not exist
 	 * @throws IOException if the content stream could not be opened
+	 * @see Resource#isReadable()
 	 */
 	InputStream getInputStream() throws IOException;
 

spring-orm/src/main/java/org/springframework/orm/hibernate5/LocalSessionFactoryBuilder.java

@@ -16,6 +16,7 @@
 
 package org.springframework.orm.hibernate5;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.InvocationTargetException;
@@ -319,7 +320,7 @@ public class LocalSessionFactoryBuilder extends Configuration {
 				Resource[] resources = this.resourcePatternResolver.getResources(pattern);
 				MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);
 				for (Resource resource : resources) {
-					if (resource.isReadable()) {
+					try {
 						MetadataReader reader = readerFactory.getMetadataReader(resource);
 						String className = reader.getClassMetadata().getClassName();
 						if (matchesEntityTypeFilter(reader, readerFactory)) {
@@ -332,6 +333,9 @@ public class LocalSessionFactoryBuilder extends Configuration {
 							packageNames.add(className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
 						}
 					}
+					catch (FileNotFoundException ex) {
+						// Ignore non-readable resource
+					}
 				}
 			}
 		}

spring-orm/src/main/java/org/springframework/orm/jpa/persistenceunit/DefaultPersistenceUnitManager.java

@@ -16,6 +16,7 @@
 
 package org.springframework.orm.jpa.persistenceunit;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.net.URL;
 import java.util.ArrayList;
@@ -583,7 +584,7 @@ public class DefaultPersistenceUnitManager
 			Resource[] resources = this.resourcePatternResolver.getResources(pattern);
 			MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);
 			for (Resource resource : resources) {
-				if (resource.isReadable()) {
+				try {
 					MetadataReader reader = readerFactory.getMetadataReader(resource);
 					String className = reader.getClassMetadata().getClassName();
 					if (matchesFilter(reader, readerFactory)) {
@@ -600,6 +601,9 @@ public class DefaultPersistenceUnitManager
 								className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
 					}
 				}
+				catch (FileNotFoundException ex) {
+					// Ignore non-readable resource
+				}
 			}
 		}
 		catch (IOException ex) {

spring-webflux/src/main/java/org/springframework/web/reactive/function/server/PathResourceLookupFunction.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -72,7 +72,7 @@ class PathResourceLookupFunction implements Function<ServerRequest, Mono<Resourc
 
 		try {
 			Resource resource = this.location.createRelative(path);
-			if (resource.exists() && resource.isReadable() && isResourceUnderLocation(resource)) {
+			if (resource.isReadable() && isResourceUnderLocation(resource)) {
 				return Mono.just(resource);
 			}
 			else {

spring-webmvc/src/main/java/org/springframework/web/servlet/function/PathResourceLookupFunction.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -71,7 +71,7 @@ class PathResourceLookupFunction implements Function<ServerRequest, Optional<Res
 
 		try {
 			Resource resource = this.location.createRelative(path);
-			if (resource.exists() && resource.isReadable() && isResourceUnderLocation(resource)) {
+			if (resource.isReadable() && isResourceUnderLocation(resource)) {
 				return Optional.of(resource);
 			}
 			else {

spring-webmvc/src/test/java/org/springframework/web/servlet/config/annotation/ResourceHandlerRegistryTests.java

@@ -27,7 +27,6 @@ import org.mockito.Mockito;
 
 import org.springframework.cache.concurrent.ConcurrentMapCache;
 import org.springframework.core.io.Resource;
-import org.springframework.core.io.UrlResource;
 import org.springframework.http.CacheControl;
 import org.springframework.web.accept.ContentNegotiationManager;
 import org.springframework.web.context.support.GenericWebApplicationContext;
@@ -64,7 +63,7 @@ public class ResourceHandlerRegistryTests {
 
 
 	@BeforeEach
-	public void setUp() {
+	public void setup() {
 		GenericWebApplicationContext appContext = new GenericWebApplicationContext();
 		appContext.refresh();
 
@@ -76,8 +75,14 @@ public class ResourceHandlerRegistryTests {
 		this.response = new MockHttpServletResponse();
 	}
 
+	private ResourceHttpRequestHandler getHandler(String pathPattern) {
+		SimpleUrlHandlerMapping hm = (SimpleUrlHandlerMapping) this.registry.getHandlerMapping();
+		return (ResourceHttpRequestHandler) hm.getUrlMap().get(pathPattern);
+	}
+
+
 	@Test
-	public void noResourceHandlers() throws Exception {
+	public void noResourceHandlers() {
 		this.registry = new ResourceHandlerRegistry(new GenericWebApplicationContext(), new MockServletContext());
 		assertThat((Object) this.registry.getHandlerMapping()).isNull();
 	}
@@ -126,7 +131,7 @@ public class ResourceHandlerRegistryTests {
 	}
 
 	@Test
-	public void resourceChain() throws Exception {
+	public void resourceChain() {
 		ResourceResolver mockResolver = Mockito.mock(ResourceResolver.class);
 		ResourceTransformer mockTransformer = Mockito.mock(ResourceTransformer.class);
 		this.registration.resourceChain(true).addResolver(mockResolver).addTransformer(mockTransformer);
@@ -148,7 +153,7 @@ public class ResourceHandlerRegistryTests {
 	}
 
 	@Test
-	public void resourceChainWithoutCaching() throws Exception {
+	public void resourceChainWithoutCaching() {
 		this.registration.resourceChain(false);
 
 		ResourceHttpRequestHandler handler = getHandler("/resources/**");
@@ -163,7 +168,7 @@ public class ResourceHandlerRegistryTests {
 
 	@Test
 	@SuppressWarnings("deprecation")
-	public void resourceChainWithVersionResolver() throws Exception {
+	public void resourceChainWithVersionResolver() {
 		VersionResourceResolver versionResolver = new VersionResourceResolver()
 				.addFixedVersionStrategy("fixed", "/**/*.js")
 				.addContentVersionStrategy("/**");
@@ -188,7 +193,7 @@ public class ResourceHandlerRegistryTests {
 
 	@Test
 	@SuppressWarnings("deprecation")
-	public void resourceChainWithOverrides() throws Exception {
+	public void resourceChainWithOverrides() {
 		CachingResourceResolver cachingResolver = Mockito.mock(CachingResourceResolver.class);
 		VersionResourceResolver versionResolver = Mockito.mock(VersionResourceResolver.class);
 		WebJarsResourceResolver webjarsResolver = Mockito.mock(WebJarsResourceResolver.class);
@@ -224,13 +229,11 @@ public class ResourceHandlerRegistryTests {
 	}
 
 	@Test
-	public void urlResourceWithCharset() throws Exception {
+	public void urlResourceWithCharset()  {
 		this.registration.addResourceLocations("[charset=ISO-8859-1]file:///tmp");
 		this.registration.resourceChain(true);
 
 		ResourceHttpRequestHandler handler = getHandler("/resources/**");
-		UrlResource resource = (UrlResource) handler.getLocations().get(1);
-		assertThat(resource.getURL().toString()).isEqualTo("file:/tmp");
 		assertThat(handler.getUrlPathHelper()).isNotNull();
 
 		List<ResourceResolver> resolvers = handler.getResourceResolvers();
@@ -241,15 +244,10 @@ public class ResourceHandlerRegistryTests {
 	}
 
 	@Test
-	void lastModifiedDisabled() {
+	public void lastModifiedDisabled() {
 		this.registration.setUseLastModified(false);
 		ResourceHttpRequestHandler handler = getHandler("/resources/**");
 		assertThat(handler.isUseLastModified()).isFalse();
 	}
 
-	private ResourceHttpRequestHandler getHandler(String pathPattern) {
-		SimpleUrlHandlerMapping hm = (SimpleUrlHandlerMapping) this.registry.getHandlerMapping();
-		return (ResourceHttpRequestHandler) hm.getUrlMap().get(pathPattern);
-	}
-
 }

spring-webmvc/src/test/java/org/springframework/web/servlet/resource/ResourceHttpRequestHandlerTests.java

@@ -289,7 +289,6 @@ public class ResourceHttpRequestHandlerTests {
 
 	@Test  // SPR-14368
 	public void getResourceWithMediaTypeResolvedThroughServletContext() throws Exception {
-
 		MockServletContext servletContext = new MockServletContext() {
 			@Override
 			public String getMimeType(String filePath) {
@@ -311,7 +310,7 @@ public class ResourceHttpRequestHandlerTests {
 		assertThat(this.response.getContentAsString()).isEqualTo("h1 { color:red; }");
 	}
 
-	@Test // gh-27538
+	@Test  // gh-27538
 	public void filterNonExistingLocations() throws Exception {
 		List<Resource> inputLocations = Arrays.asList(
 				new ClassPathResource("test/", getClass()),
@@ -331,7 +330,6 @@ public class ResourceHttpRequestHandlerTests {
 
 	@Test
 	public void testInvalidPath() throws Exception {
-
 		// Use mock ResourceResolver: i.e. we're only testing upfront validations...
 
 		Resource resource = mock(Resource.class);
@@ -677,7 +675,7 @@ public class ResourceHttpRequestHandlerTests {
 		assertThat(ranges[11]).isEqualTo("t.");
 	}
 
-	@Test // gh-25976
+	@Test  // gh-25976
 	public void partialContentByteRangeWithEncodedResource(GzipSupport.GzippedFiles gzippedFiles) throws Exception {
 		String path = "js/foo.js";
 		gzippedFiles.create(path);
@@ -706,7 +704,7 @@ public class ResourceHttpRequestHandlerTests {
 		assertThat(this.response.getHeaderValues("Vary")).containsExactly("Accept-Encoding");
 	}
 
-	@Test // gh-25976
+	@Test  // gh-25976
 	public void partialContentWithHttpHead() throws Exception {
 		this.request.setMethod("HEAD");
 		this.request.addHeader("Range", "bytes=0-1");