hellotag.java

介绍了j2ee开发常用的学习知识,如servlet,javamail,EJB等知识,并有项目源码.

/*
 * HelloTag.java
 *
 * Created on 2007年11月28日, 上午9:40
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package com.tag;

/**
 *
 * @author hyl
 */
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 Tag!");
        } catch (IOException ioEx) {
            System.out.println("IOException in HelloTag " + ioEx);
        }
        return (SKIP_BODY);
    }
    public int doEndTag() {
        return EVAL_PAGE;
    }
}