Iterator按照指定格式转化成List
org.apache.commons.collections.functors.ChainedTransformer;org.apache.commons.collections.functors.CloneTransformer;org.apache.commons.collections.functors.ClosureTransformer;org.apache.commons.collections.functors.ConstantTransformer;org.apache.commons.collections.functors.EqualPredicate;org.apache.commons.collections.functors.ExceptionTransformer;org.apache.commons.collections.functors.FactoryTransformer;org.apache.commons.collections.functors.InstantiateTransformer;org.apache.commons.collections.functors.InvokerTransformer;org.apache.commons.collections.functors.MapTransformer;org.apache.commons.collections.functors.NOPTransformer;org.apache.commons.collections.functors.PredicateTransformer;org.apache.commons.collections.functors.StringValueTransformer;org.apache.commons.collections.functors.SwitchTransformer;

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