实现freemarker的TemplateDirectiveModel自定义标签问题

Question

public class TestTemplateDirectiveModel implements TemplateDirectiveModel 重写execute方法,TemplateDirectiveBody body 为空,body.render(evn.getOut());报空异常,这个请问下是什么原因造成的?

Answer 1

http://zwllxs.iteye.com/blog/2036826