MessageSourceResourceBundle.containsKey throws NullPointerException [SPR-10136]

[spring-projects-issues]

Adrien Bonnin opened SPR-10136 and commented

When I try to use containsKey method on a MessageSourceResourceBundle instance I got the following NullPointerException :

Exception in thread "main" java.lang.NullPointerException
at java.util.ResourceBundle.handleKeySet(ResourceBundle.java:1787)
at java.util.ResourceBundle.containsKey(ResourceBundle.java:1741)
at net.toto.main(Main.java:36)

Here is a sample code :

Locale locale = Locale.getDefault();

ResourceBundleMessageSource bundle = new ResourceBundleMessageSource();
bundle.setBasename("bundles.Main");
System.out.println(bundle.getMessage("settings", new Object[0], locale));

MessageSourceResourceBundle bundle2 = new MessageSourceResourceBundle(bundle, locale);
System.out.println(bundle2.getString("settings"));

bundle2.containsKey("settings"); // NullPointerException

---

Affects: 3.1.2

Backported to: 3.1.4

[spring-projects-issues]

Juergen Hoeller commented

This is fundamentally a JDK 1.6 API compatibility issue: containsKey (along with keySet and others) has been introduced in JDK 1.6, with Spring's MessageSourceResourceBundle adapter originally not having been designed to support those methods. We'll fix this for 3.2.1 and 3.1.4.

Juergen

[spring-projects-issues]

Juergen Hoeller commented

Fixed through overriding containsKey. Note that enumeration of keys doesn't work at all with a MessageSource, so ResourceBundle's keySet and getKeys methods throw an UnsupportedOperationException now.

Juergen

[spring-projects-issues]

Adrien Bonnin commented

Thank you :)