filterhtmltag.java

用java编写的程序

package webbook.chapter12;

import java.io.IOException;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import webbook.util.StringUtil;

public class FilterHtmlTag extends BodyTagSupport {
	private static final long serialVersionUID = 8869834058379094900L;

	public int doAfterBody() throws JspTagException {
		BodyContent body = getBodyContent();
		String input = body.getString();
		JspWriter out = body.getEnclosingWriter();
		// 对定制标记所包含的内容进行HTML代码过滤
		String newContent = StringUtil.filterHtml(input);
		try {
			out.println(newContent);
		} catch (IOException e) {	
			throw new JspTagException(e);
		}
		return SKIP_BODY;
	}
}