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Allow entries to be streamed from JarURLConnections' jar file 

Fixes gh-23821
This commit is contained in:
Andy Wilkinson 2020-11-03 17:59:38 +00:00
parent 2d9d40bd2d
commit f3d4b3e5ac
3 changed files with 33 additions and 1 deletions
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6
spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/JarFileWrapper.java
View File

@ -24,6 +24,7 @@ import java.security.Permission;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.Manifest;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
/**
@ -67,6 +68,11 @@ class JarFileWrapper extends AbstractJarFile {
return this.parent.entries();
}
@Override
public Stream<JarEntry> stream() {
return this.parent.stream();
}
@Override
public JarEntry getJarEntry(String name) {
return this.parent.getJarEntry(name);

17
spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/jar/JarFileWrapperTests.java
View File

@ -28,6 +28,7 @@ import java.util.Enumeration;
import java.util.Set;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;
import java.util.stream.Stream;
import java.util.zip.ZipEntry;
import org.junit.jupiter.api.AfterEach;
@ -150,6 +151,12 @@ class JarFileWrapperTests {
.isThrownBy(() -> JarFileWrapper.class.getDeclaredMethod("close"));
}
@Test
void streamDelegatestoParent() {
this.wrapper.stream();
this.parent.verify(Call.STREAM);
}
/**
* {@link JarFile} that we can spy (even on Java 11+)
*/
@ -179,6 +186,12 @@ class JarFileWrapperTests {
return super.entries();
}
@Override
public Stream<java.util.jar.JarEntry> stream() {
mark(Call.STREAM);
return super.stream();
}
@Override
public JarEntry getJarEntry(String name) {
mark(Call.GET_JAR_ENTRY);
@ -257,7 +270,9 @@ class JarFileWrapperTests {
GET_COMMENT,
SIZE
SIZE,
STREAM
}

11
spring-boot-project/spring-boot-tools/spring-boot-loader/src/test/java/org/springframework/boot/loader/jar/JarURLConnectionTests.java
View File

@ -21,6 +21,9 @@ import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.net.URL;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.stream.Collectors;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
@ -201,6 +204,14 @@ class JarURLConnectionTests {
assertThat(connection.getLastModified()).isEqualTo(connection.getJarEntry().getTime());
}
@Test
void entriesCanBeStreamedFromJarFileOfConnection() throws Exception {
URL url = new URL("jar:" + this.rootJarFile.toURI().toURL() + "!/");
JarURLConnection connection = JarURLConnection.get(url, this.jarFile);
List<String> entryNames = connection.getJarFile().stream().map(JarEntry::getName).collect(Collectors.toList());
assertThat(entryNames).hasSize(12);
}
@Test
void jarEntryBasicName() {
assertThat(new JarEntryName(new StringSequence("a/b/C.class")).toString()).isEqualTo("a/b/C.class");