在JSP 如何使用switch

DAY 22

JSP 學習分享系列第 22 篇

switch jsp 鐵人賽

akey19761213

2009-11-03 09:23:50

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在JSP 如何使用switch,
一個簡單的小範例,把0~9的數字變成ZERO ~ NINE
=== switch_sample.jsp ===

<HTML>
  <HEAD>
    <TITLE>use switch statement in jsp page</TITLE>
  </HEAD>
  <BODY bgcolor="#6E6E6E">
    <FORM NAME="form1" ACTION="switch_sample.jsp" METHOD="get">
      <TABLE bgcolor="#D8D8D8">
        <tr>
          <td> Enter number </td>
          <td><input type="text" name="num"></td>
        </tr>
        <tr align="center"><td></td>
          <td><INPUT TYPE="submit" VALUE="show"></td></tr></TABLE>
    </FORM>
    <br>
    <TABLE bgcolor="#E0ECF8"><tr><td>
          <%
          if (request.getParameter("num") != null &&
                  request.getParameter("num") != "") {
            for (int i = 0; i < request.getParameter("num").length(); i++) {
              char value = request.getParameter("num").charAt(i);

              // switch statement with some value
              switch (value) {
                case '0':
                  out.print("ZERO");
                  break;
                case '1':
                  out.print("ONE");
                  break;
                case '2':
                  out.println("TWO");
                  break;
                case '3':
                  out.println("THREE");
                  break;
                case '4':
                  out.println("FOUR");
                  break;
                case '5':
                  out.println("FIVE");
                  break;
                case '6':
                  out.println("SIX");
                  break;
                case '7':
                  out.println("SEVEN");
                  break;
                case '8':
                  out.println("EIGHT");
                  break;
                case '9':
                  out.println("NINE");
                  break;
              }
            }
          }
          %>
        </td></tr></TABLE>