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Fix regression in ClassPathResource descriptions 

ClassPathResource.getDescription() now returns consistent, meaningful
results for all variants of ClassPathResource's constructors.

Issue: SPR-9413
This commit is contained in:
Sam Brannen 2012-05-16 04:24:53 +02:00
parent 500a4dd995
commit b50f6e19a6
2 changed files with 91 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
spring-core/src/main/java/org/springframework/core/io/ClassPathResource.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2010 the original author or authors.
* Copyright 2002-2012 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.
@ -35,6 +35,7 @@ import org.springframework.util.StringUtils;
* Always supports resolution as URL.
*
* @author Juergen Hoeller
* @author Sam Brannen
* @since 28.12.2003
* @see java.lang.ClassLoader#getResourceAsStream(String)
* @see java.lang.Class#getResourceAsStream(String)
@ -108,7 +109,6 @@ public class ClassPathResource extends AbstractFileResolvingResource {
this.clazz = clazz;
}
/**
* Return the path for this resource (as resource path within the class path).
*/
@ -123,7 +123,6 @@ public class ClassPathResource extends AbstractFileResolvingResource {
return (this.classLoader != null ? this.classLoader : this.clazz.getClassLoader());
}
/**
* This implementation checks for the resolution of a resource URL.
* @see java.lang.ClassLoader#getResource(String)
@ -155,8 +154,7 @@ public class ClassPathResource extends AbstractFileResolvingResource {
is = this.classLoader.getResourceAsStream(this.path);
}
if (is == null) {
throw new FileNotFoundException(
getDescription() + " cannot be opened because it does not exist");
throw new FileNotFoundException(getDescription() + " cannot be opened because it does not exist");
}
return is;
}
@ -176,8 +174,7 @@ public class ClassPathResource extends AbstractFileResolvingResource {
url = this.classLoader.getResource(this.path);
}
if (url == null) {
throw new FileNotFoundException(
getDescription() + " cannot be resolved to URL because it does not exist");
throw new FileNotFoundException(getDescription() + " cannot be resolved to URL because it does not exist");
}
return url;
}
@ -209,17 +206,22 @@ public class ClassPathResource extends AbstractFileResolvingResource {
public String getDescription() {
StringBuilder builder = new StringBuilder("class path resource [");
if (this.clazz != null) {
String pathToUse = path;
if (this.clazz != null && !pathToUse.startsWith("/")) {
builder.append(ClassUtils.classPackageAsResourcePath(this.clazz));
builder.append('/');
}
builder.append(this.path);
if (pathToUse.startsWith("/")) {
pathToUse = pathToUse.substring(1);
}
builder.append(pathToUse);
builder.append(']');
return builder.toString();
}
/**
* This implementation compares the underlying class path locations.
*/
@ -230,9 +232,9 @@ public class ClassPathResource extends AbstractFileResolvingResource {
}
if (obj instanceof ClassPathResource) {
ClassPathResource otherRes = (ClassPathResource) obj;
return (this.path.equals(otherRes.path) &&
ObjectUtils.nullSafeEquals(this.classLoader, otherRes.classLoader) &&
ObjectUtils.nullSafeEquals(this.clazz, otherRes.clazz));
return (this.path.equals(otherRes.path)
&& ObjectUtils.nullSafeEquals(this.classLoader, otherRes.classLoader) && ObjectUtils.nullSafeEquals(
this.clazz, otherRes.clazz));
}
return false;
}

88
spring-core/src/test/java/org/springframework/core/io/ClassPathResourceTests.java
View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2010 the original author or authors.
* Copyright 2002-2012 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.
@ -17,24 +17,59 @@
package org.springframework.core.io;
import static org.hamcrest.CoreMatchers.instanceOf;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.junit.internal.matchers.StringContains.containsString;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.junit.Test;
/**
* Unit tests cornering bug SPR-6888.
* Unit tests that serve as regression tests for the bugs described in SPR-6888
* and SPR-9413.
*
* @author Chris Beams
* @author Sam Brannen
*/
public class ClassPathResourceTests {
private static final String PACKAGE_PATH = "org/springframework/core/io";
private static final String RESOURCE_NAME = "notexist.xml";
private static final String FQ_RESOURCE_PATH = PACKAGE_PATH + '/' + RESOURCE_NAME;
private static final String NONEXISTENT_RESOURCE_NAME = "nonexistent.xml";
private static final String FQ_RESOURCE_PATH = PACKAGE_PATH + '/' + NONEXISTENT_RESOURCE_NAME;
/**
* Absolute path version of {@link #FQ_RESOURCE_PATH}.
*/
private static final String FQ_RESOURCE_PATH_WITH_LEADING_SLASH = '/' + FQ_RESOURCE_PATH;
private static final Pattern DESCRIPTION_PATTERN = Pattern.compile("^class path resource \\[(.+?)\\]$");
private void assertDescriptionContainsExpectedPath(ClassPathResource resource, String expectedPath) {
Matcher matcher = DESCRIPTION_PATTERN.matcher(resource.getDescription());
assertTrue(matcher.matches());
assertEquals(1, matcher.groupCount());
String match = matcher.group(1);
assertEquals(expectedPath, match);
}
private void assertExceptionContainsFullyQualifiedPath(ClassPathResource resource) {
try {
resource.getInputStream();
fail("FileNotFoundException expected for resource: " + resource);
}
catch (IOException ex) {
assertThat(ex, instanceOf(FileNotFoundException.class));
assertThat(ex.getMessage(), containsString(FQ_RESOURCE_PATH));
}
}
@Test
public void stringConstructorRaisesExceptionWithFullyQualifiedPath() {
@ -43,21 +78,48 @@ public class ClassPathResourceTests {
@Test
public void classLiteralConstructorRaisesExceptionWithFullyQualifiedPath() {
assertExceptionContainsFullyQualifiedPath(new ClassPathResource(RESOURCE_NAME, this.getClass()));
assertExceptionContainsFullyQualifiedPath(new ClassPathResource(NONEXISTENT_RESOURCE_NAME, this.getClass()));
}
@Test
public void classLoaderConstructorRaisesExceptionWithFullyQualifiedPath() {
assertExceptionContainsFullyQualifiedPath(new ClassPathResource(FQ_RESOURCE_PATH, this.getClass().getClassLoader()));
assertExceptionContainsFullyQualifiedPath(new ClassPathResource(FQ_RESOURCE_PATH,
this.getClass().getClassLoader()));
}
private void assertExceptionContainsFullyQualifiedPath(ClassPathResource resource) {
try {
resource.getInputStream();
fail("FileNotFoundException expected for resource: " + resource);
} catch (IOException ex) {
assertThat(ex, instanceOf(FileNotFoundException.class));
assertThat(ex.getMessage(), containsString(FQ_RESOURCE_PATH));
@Test
public void getDescriptionWithStringConstructor() {
assertDescriptionContainsExpectedPath(new ClassPathResource(FQ_RESOURCE_PATH), FQ_RESOURCE_PATH);
}
@Test
public void getDescriptionWithStringConstructorAndLeadingSlash() {
assertDescriptionContainsExpectedPath(new ClassPathResource(FQ_RESOURCE_PATH_WITH_LEADING_SLASH),
FQ_RESOURCE_PATH);
}
@Test
public void getDescriptionWithClassLiteralConstructor() {
assertDescriptionContainsExpectedPath(new ClassPathResource(NONEXISTENT_RESOURCE_NAME, this.getClass()),
FQ_RESOURCE_PATH);
}
@Test
public void getDescriptionWithClassLiteralConstructorAndLeadingSlash() {
assertDescriptionContainsExpectedPath(
new ClassPathResource(FQ_RESOURCE_PATH_WITH_LEADING_SLASH, this.getClass()), FQ_RESOURCE_PATH);
}
@Test
public void getDescriptionWithClassLoaderConstructor() {
assertDescriptionContainsExpectedPath(
new ClassPathResource(FQ_RESOURCE_PATH, this.getClass().getClassLoader()), FQ_RESOURCE_PATH);
}
@Test
public void getDescriptionWithClassLoaderConstructorAndLeadingSlash() {
assertDescriptionContainsExpectedPath(new ClassPathResource(FQ_RESOURCE_PATH_WITH_LEADING_SLASH,
this.getClass().getClassLoader()), FQ_RESOURCE_PATH);
}
}