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Add caching to JarFile.getUrl()

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Fixes gh-1178
This commit is contained in:
Phillip Webb 2014-06-26 11:23:35 -07:00
parent 200cd535c2
commit 35b26b52f2
1 changed files with 8 additions and 3 deletions
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11
spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/JarFile.java
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@ -84,6 +84,8 @@ public class JarFile extends java.util.jar.JarFile implements Iterable<JarEntryD
private SoftReference<Manifest> manifest;
private URL url;
/**
* Create a new {@link JarFile} backed by the specified file.
* @param file the root jar file
@ -417,9 +419,12 @@ public class JarFile extends java.util.jar.JarFile implements Iterable<JarEntryD
* @throws MalformedURLException
*/
public URL getUrl() throws MalformedURLException {
Handler handler = new Handler(this);
String file = this.rootFile.getFile().toURI() + this.pathFromRoot + "!/";
return new URL("jar", "", -1, file, handler);
if (this.url == null) {
Handler handler = new Handler(this);
String file = this.rootFile.getFile().toURI() + this.pathFromRoot + "!/";
this.url = new URL("jar", "", -1, file, handler);
}
return this.url;
}
@Override