JS+Ajax实现百度智能搜索框

网络编程 2024/11/15 佚名

3 2 1

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！