Ajax+servlet实现搜索框智能提示

package com; import java.io.IOException; import java.net.URLDecoder; import java.util.ArrayList; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; public class SearchServlet extends HttpServlet { private static final long serialVersionUID = -8843549013487105146L; public static List<String> datas = new ArrayList<String>(); static{ datas.add("北京"); datas.add("北平"); datas.add("java"); datas.add("javase"); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); //获取客户端发送的数据信息keyword String keyword = request.getParameter("keyword"); //解决前端页面传递的中文编码 keyword = URLDecoder.decode(keyword,"UTF-8"); //获取关键字后进行处理，得到关联数据 List<String> listData = getData(keyword); //返回json格式 System.out.println(JSONArray.fromObject(listData)); response.getWriter().write(JSONArray.fromObject(listData).toString()); } private List<String> getData(String keyword){ List<String> list = new ArrayList<String>(); for(String data:datas){ if(data.contains(keyword)){ list.add(data); } } return list; } }