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Protect against multiple define package calls

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Ensure that multiple calls to define package are not made when the
same class is contained in multiple jars.
This commit is contained in:
Phillip Webb 2013-07-13 22:44:27 -07:00
parent dc1b787a01
commit 8d39abb8d9
1 changed files with 7 additions and 1 deletions
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8
spring-launcher/src/main/java/org/springframework/launcher/LaunchedURLClassLoader.java
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@ -46,7 +46,12 @@ public class LaunchedURLClassLoader extends URLClassLoader {
if (lastDot != -1) {
String packageName = name.substring(0, lastDot);
if (getPackage(packageName) == null) {
definePackageForFindClass(name, packageName);
try {
definePackageForFindClass(name, packageName);
}
catch (Exception ex) {
// Swallow and continue
}
}
}
return super.findClass(name);
@ -72,6 +77,7 @@ public class LaunchedURLClassLoader extends URLClassLoader {
if (jarFile.getManifest() != null
&& jarFile.getJarEntry(path) != null) {
definePackage(packageName, jarFile.getManifest(), url);
return null;
}
}
}