将雅虎的搜索添加到自己的WEB项目中

public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException
{
    //定义Yahoo的搜索Web Service的访问URL的基本部分
    String baseUrl = "http://api.search.yahoo.com/WebSearchService/V1/webSearch?appid=YahooDemo&ei=gb2312&type=all";
    //获得客户的查询关键字
    String query = request.getParameter("query");
    //对query进编码转换
    query = new String(query.getBytes("ISO8859-1"),"gb2312");
    //对query进URL编码
    query = URLEncoder.encode(query,"gb2312");
    //构造出查询关键字参数
    query = "&query="+query;
    //获得客户的记录数
    String results = request.getParameter("results");
    //构造出记录数参数
    results = "&results="+results;   
    //构造出完整的URL
    String url = baseUrl+query+results;
    //建立一个HttpURLConnection对象进行搜索
    HttpURLConnection con = (HttpURLConnection)new URL(url).openConnection();
    //设置HttpURLConnection对象的访问方法
    con.setRequestMethod("GET");
       
    //将查询的结果以XML文档返回给客户端
    response.setContentType("text/xml");
    response.setCharacterEncoding("UTF-8");
    PrintWriter out = response.getWriter();
    //建立一个BufferedReader对象读取查询结果
    BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
    String line = null;
    //一行一行地读取查询结果
    while ((line = reader.readLine())!=null){
        //对读取的数据进行编码转换
        line = new String(line.getBytes(),"gb2312");
        out.println(line);
    }
    out.flush();
    out.close();
}