code: public static ApplicationClassLoader createNormalApplicationClassLoader(ClassLoader parent, String... jarFilePaths){
          ApplicationClassLoader classLoader = new ApplicationClassLoader(parent, true);
          classLoader.addJarFiles(jarFilePaths);
          return classLoader;
      }
docs: 创建一个普通的applicationClassLoader
  
  @param parent 父加载器
  @param jarFilePaths jar包路径
  @return 创建好的applicationClassLoader