自定义标签2.x

2.x只需要继承SimpleTagSupport

1.x 输出流  JspWriter out = pageContext.getOut();

2.x 输出流  JspWriter out = getJspContext().getOut();

如果标签体有内容

StringWriter sw = new StringWriter();
getJspBody().invoke(sw);
getJspContext().getOut().println(sw.toString() + message);

tld的的<bodycontent>有点不一样，不能写JSP和empty

写tagdependent

转载于:https://www.cnblogs.com/vhyc/p/6653503.html