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
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <html> <head> <title>Insert title here</title> <script src="/UploadFiles/2021-04-02/jquery.min.js">后台searchServlet.Java
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<String> datas=new ArrayList<String>(); 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, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub request.setCharacterEncoding("UTF-8"); response.setCharacterEncoding("UTF-8"); String keyword=request.getParameter("keyword"); //System.out.println(keyword); List<String> 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<String> getData(String keyword) { List<String> list=new ArrayList<String>(); for(String data:datas) { if(data.contains(keyword)){ list.add(data); } } return list; } }xml配置
<span style="font-size:18px;"><strong><"1.0" encoding="UTF-8""http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <servlet> <servlet-name>searchServlet</servlet-name> <servlet-class>search.searchServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>searchServlet</servlet-name> <url-pattern>/search/searchServlet</url-pattern> </servlet-mapping> <display-name>DropMeum</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app></strong></span>目录结构
总结
以上所述是小编给大家介绍的JS+Ajax实现百度智能搜索框，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
