servlet和JSP过滤器Filter

作者: 来源:网络文章时间:2005-12-15 0:10:56

servlet和JSP过滤器Filter(24)         "<HTML>\n" +
        "<HEAD><TITLE>Today's Special</TITLE></HEAD>\n" +
        "<BODY BGCOLOR=\"WHITE\">\n" +
        "<CENTER>\n" +
        "<H1>Today's Special: " + title + "s!</H1>\n" +
        "<IMG SRC=\"images/" + picture + "\"\n" +
        " ALT=\"" + title + "\">\n" +
        "<BR CLEAR=\"ALL\">\n" +
        "Special deal: for only twice the price, you can\n" +
        "<I>buy one, get one free!</I>.\n" +
        "</BODY></HTML>");
  }

  // Rotate among the three available filter images.

  private void updateSpecials() {
    double num = Math.random();
    if (num < 0.333) {
      title = "Air Filter";
      picture = "air-filter.jpg";
    } else if (num < 0.666) {
      title = "Coffee Filter";
      picture = "coffee-filter.gif";
    } else {
      title = "Pump Filter";

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