hellotag.java

J2EE 技术 源码 书籍源代码（j2ee编程技术）

package tag;
import javax.servlet.jsp.tagext.TagSupport;
import java.io.*;
import javax.servlet.jsp.JspWriter;
public class HelloTag extends TagSupport {
	public int doStartTag() {
        try {
            //使用JSPWriter获得JSP的输出对象
            JspWriter JSPWriterOutput = pageContext.getOut();
            JSPWriterOutput.print("Hello !");
        } catch (IOException ioEx) {
            System.out.println("IOException in HelloTag " + ioEx);
        }
        return (SKIP_BODY);
    }
public int doEndTag() {
		return EVAL_PAGE;
	}
}