首先浏览实现后的结果，输入一个a之后会出现包含a的下拉列表，当我们点击某一个的时候，搜索框中就会出现点击的值。实现所需要的主要是ajax+js。
前端search.jsp
rush:js;">
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Insert title here
百度一下" style="">
rush:js;">
package search;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import net.sf.json.JSONArray;
import javax.servlet.
servletexception;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class searchServlet
*/
@WebServlet("/searchServlet")
public class searchServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
static List
datas=new ArrayList();
static {//假数据，模拟数据库读取
datas.add("ajax");
datas.add("bjax");
datas.add("ajaxfd");
datas.add("bfvd");
datas.add("dafdx");
datas.add("fdax");
datas.add("ahg");
datas.add("ddx");
}
/**
* @see HttpServlet#HttpServlet()
*/
public searchServlet() {
super();
// Todo Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request,HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request,HttpServletResponse response) throws servletexception,IOException {
// Todo Auto-generated method stub
doPost(request,response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request,HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request,IOException {
// Todo Auto-generated method stub
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
String keyword=request.getParameter("keyword");
//System.out.println(keyword);
List listdata= getData(keyword);
// 返回json,以流的形式写到前台
response.getWriter().write(JSONArray.fromObject(listdata).toString());
}
//获取假数据中符合条件的值
public List getData(String keyword)
{
List list=new ArrayList();
for(String data:datas)
{
if(data.contains(keyword)){
list.add(data);
}
}
return list;
}
}
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