iteratetag.java

来自「beginJsp2.0外文书籍源代码」· Java 代码 · 共 33 行

package custom;

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;

public class iterateTag extends TagSupport
{
  private int arrayCount = 0;
  private String[] strings = null;

  public int doStartTag()
  {
    arrayCount = 0;
    strings = (String[]) pageContext.getAttribute("strings");
    pageContext.setAttribute("currentString", strings[arrayCount]);
    pageContext.setAttribute("arrayCount", new Integer(arrayCount));

    return EVAL_BODY_INCLUDE;
  } 

  public int doAfterBody() throws JspException
  {
    arrayCount++;
    if (arrayCount >= strings.length)
      return SKIP_BODY;

    pageContext.setAttribute("currentString", strings[arrayCount]);
    pageContext.setAttribute("arrayCount", new Integer(arrayCount));

    return EVAL_BODY_AGAIN;
  } 
}