code: private static List<Class<?>> rs2class(String pkg, List<NutResource> list) {
          Set<Class<?>> re = new LinkedHashSet<Class<?>>(list.size());
          if (!list.isEmpty()) {
              for (NutResource nr : list) {
                  if (!nr.getName().endsWith(".class") || nr.getName().endsWith("package-info.class")) {
                      continue;
                  }
                  // Class快速载入
                  String className = pkg + "." + nr.getName().substring(0, nr.getName().length() - 6).replaceAll("[/\\\\]", ".");
                  try {
                  	Class<?> klass = Lang.loadClass(className);
                      re.add(klass);
  					continue;
  				}
  				catch (Throwable e) {}
                  // 失败了? 尝试终极方法,当然了,慢多了
                  InputStream in = null;
                  try {
                      in = nr.getInputStream();
                      className = ClassTools.getClassName(in);
                      if (className == null) {
                          if (log.isInfoEnabled())
                              log.infof("Resource can't map to Class, Resource %s", nr);
                          continue;
                      }
                      Class<?> klass = Lang.loadClass(className);
                      re.add(klass);
                  }
                  catch (Throwable e) {
                      if (log.isInfoEnabled())
                          log.info("Resource can't map to Class, Resource " + nr.getName());
                  }
                  finally {
                      Streams.safeClose(in);
                  }
              }
          }
          return new ArrayList<Class<?>>(re);
      }
docs: 将一组 NutResource 转换成 class 对象
  
  @param packagePath
  包前缀
  @param list
  列表
  @return 类对象列表