我有一个groovy类，它能够将其输出写入StringWriter-(通过setStringWriter方法)。在java中我会使用下面的代码:filter.setStringWriter(newStringWriter(){@Overridepublicvoidwrite(Stringstring){//dosomethingwiththestring}});对于Groovy我被告知要使用闭包，我已经尝试了以下但没有成功:defs={Stringline->printline}asStringWriterfilter.setStringWriter(s)或filter.setStri