Wrap URLEncoder, URLDecoder

These classes throw an exception that is ugly to work with when using
UTF-8 encoding as the JVM is required to support UTF-8, which means
the declared exception cannot occur. Wrap these into a helper class
that catches the declared exception and rethrows as RuntimeException.

Change-Id: Id277cf029348583f5edad5f5447b4ec4198dc980

gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectsCollection.java

@@ -22,12 +22,10 @@ import com.google.gerrit.extensions.restapi.TopLevelResource;
 import com.google.gerrit.reviewdb.client.Project;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.OutputFormat;
+import com.google.gerrit.server.util.Url;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 
-import java.io.UnsupportedEncodingException;
-import java.net.URLDecoder;
-
 public class ProjectsCollection implements
     RestCollection<TopLevelResource, ProjectResource> {
   private final DynamicMap<RestView<ProjectResource>> views;
@@ -56,7 +54,9 @@ public class ProjectsCollection implements
       throws ResourceNotFoundException {
     ProjectControl ctl;
     try {
-      ctl = controlFactory.controlFor(decode(id), user.get());
+      ctl = controlFactory.controlFor(
+          new Project.NameKey(Url.decode(id)),
+          user.get());
     } catch (NoSuchProjectException e) {
       throw new ResourceNotFoundException(id);
     }
@@ -66,14 +66,6 @@ public class ProjectsCollection implements
     return new ProjectResource(ctl);
   }
 
-  private static Project.NameKey decode(String id) {
-    try {
-      return new Project.NameKey(URLDecoder.decode(id, "UTF-8"));
-    } catch (UnsupportedEncodingException e) {
-      throw new RuntimeException("JVM does not support UTF-8", e);
-    }
-  }
-
   @Override
   public DynamicMap<RestView<ProjectResource>> views() {
     return views;