p;        "http://infoseek.go.com/Titles?qt=",
                     "&nh="),
      new SearchSpec("lycos",
                     "http://lycospro.lycos.com/cgi-bin/pursuit?query=",
                     "&maxhits="),
      new SearchSpec("hotbot",
                     "http://www.hotbot.com/?MT=",
                     "&DC=")
    };

  public SearchSpec(String name,
                    String baseURL,
                    String numResultsSuffix) {
    this.name = name;
    this.baseURL = baseURL;
    this.numResultsSuffix = numResultsSuffix;
  }

  public String makeURL(String searchString, String numResults) {
    return(baseURL + searchString + numResultsSuffix + numResults);
  }

  public String getName() {
    return(name);
  }

  public static SearchSpec[] getCommonSpecs() {
    return(commonSpecs);
  }
}




　　 SearchEngines.html

　　 下面是调用上述Servlet的HTML表单。
＜!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"＞
＜HTML＞
＜HEAD＞
  ＜TITLE＞访问多个搜索引擎＜/TITLE＞
＜/HEAD＞

＜BODY BGCOLOR="#FDF5E6"＞

＜FORM ACTION="/servlet/hall.SearchEngines"＞
  ＜CENTER＞
    搜索关键字:
    ＜INPUT TYPE="TEXT" NAME="searchString"＞＜BR＞
    每页显示几个查询结果:
    ＜INPUT TYPE="TEXT" NAME="numResults"
                       VALUE=10 SIZE=3＞＜BR＞
    ＜INPUT TYPE="RADIO" NAME="searchEngine"
                        VALUE="google"＞
    Google |
    ＜INPUT TYPE="RADIO" NAME="searchEngine"
                        VALUE="infoseek"＞
    Infoseek |
    ＜INPUT TYPE="RADIO" NAME="searchEngine"
                        VALUE="lycos"＞
    Lycos |
    ＜INPUT TYPE="RADIO" NAME="searchEngine"
                        VALUE="hotbot"＞
    HotBot
    ＜BR＞
    ＜INPUT TYPE="SUBMIT" VALUE="Search"＞
  ＜/CENTER＞
＜/FORM＞

＜/BODY＞
＜/HTML＞

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