package com.atlassian.plugin.refimpl.servlet;
   
   import com.atlassian.plugin.servlet.ContentTypeResolver;
   
   import java.util.Collections;
   import java.util.HashMap;
   import java.util.Map;
   
   /**
   * A simple content type resolver that can identify css and js resources.
   */
  public class SimpleContentTypeResolver implements ContentTypeResolver {
      private final Map<String, String> mimeTypes;
  
      public SimpleContentTypeResolver() {
          final Map<String, String> types = new HashMap<String, String>();
          types.put(".js", "application/x-javascript");
          types.put(".css", "text/css");
          mimeTypes = Collections.unmodifiableMap(types);
      }
  
      public String getContentType(final String requestUrl) {
          final String extension = requestUrl.substring(requestUrl.lastIndexOf('.'));
          return mimeTypes.get(extension);
      }
  }