使用ES+JavaWeb实现关键词索引相关文章内容
Posted Mr.zhou_Zxy
tags:
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ElasticSearch + JavaWeb
使用JavaWeb提供一个页面和搜索框，在搜索框中输入关键词，通过ES检索，找出匹配到的文章内容
一 JavaCode
1.ES2Web
package com.zxy.web.servlet;
import com.zxy.pojo.Suitable;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.SearchType;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
public class ES2Web {
public static List<String> getIndexWord(String indexWord) throws UnknownHostException {
System.out.println("ES2Web.getIndexWord():" + indexWord);
List<String> ulist = new ArrayList<String>();
Suitable suitable = new Suitable();
Settings settings = Settings.builder()
.put("cluster.name", "hzbigdata2101")
.build();
PreBuiltTransportClient client = new PreBuiltTransportClient(settings);
client.addTransportAddresses(
new TransportAddress(InetAddress.getByName("192.168.130.110"), 9300)
);
SearchResponse searchResponse = client.prepareSearch("chinese")
.setSearchType(SearchType.QUERY_THEN_FETCH)
.setQuery(QueryBuilders.matchQuery("content", indexWord))
.get();
SearchHits hits = searchResponse.getHits();
System.out.println("totalHits:"+hits.totalHits);
System.out.println("maxSource:"+hits.getMaxScore());
SearchHit[] searchHits = hits.getHits();
for(SearchHit hit:searchHits){
String[] split = hit.getSourceAsString().split(":");
System.out.println(split[0] + " + " + split[1]);
int i = split[1].lastIndexOf("\\"");
System.out.println("i" + i);
String substring = split[1].substring(1, i);
System.out.println(substring);
ulist.add(substring);
suitable.setSuitableWord(ulist);
System.out.println("index:"+hit.getIndex());
System.out.println("type:"+hit.getType());
System.out.println("docID:"+hit.getId());
System.out.println("content:"+hit.getSourceAsString());
}
return suitable.getSuitableWord();
}
}
2.LoginServlet
package com.zxy.web.servlet;
import com.zxy.service.UserService;
import com.zxy.service.impl.UserServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
public class LoginServlet extends HttpServlet {
private UserService userService = new UserServiceImpl();
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String indexWord1 = request.getParameter("indexWord");
String indexWord = new String(indexWord1.getBytes("ISO-8859-1"),"utf-8");
System.out.println("loginservlet->indexword:"+indexWord);
List<String> suitable = ES2Web.getIndexWord(indexWord);
System.out.println("匹配到的数据:" + suitable);
if (suitable != null) {
request.getSession().setAttribute("indexWord", indexWord);
request.getSession().setAttribute("suitable", suitable);
response.sendRedirect("/success.jsp");
}else {
request.getRequestDispatcher("/error.jsp").forward(request, response);
}
}
}
二 JspCode
1. index.jsp
<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<html>
<head>
<title>登陆</title>
</head>
<body>
<%-- 所有的表单提交都使用post方式提交 --%>
<%-- 项目名/servlet路径：
绝对路径：/loginServlet
相对路径：loginServlet
--%>
<form action="/loginServlet" method="post">
关键字：<input type="text" name="indexWord" ><br>
<%-- 关键字:<input name="indexWord" onkeyup="value=value.replace(/[^\\w\\u4E00-\\u9FA5]/g, '')"/><br>--%>
<input type="submit" value="搜索">
</form>
</body>
</html>
2.success.jsp
<%@ page import="com.zxy.pojo.User" %>
<%@ page import="java.util.List" %>
<%@ page import="com.zxy.pojo.Suitable" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>successful</title>
</head>
<%--
jsp 有9大内置对象
page
pageContext
request
response
session
application
exception
out
--%>
<body>
<h2>搜索引擎</h2>
<%
Object indexWord = session.getAttribute("indexWord");
System.out.println("success.jsp->indexword:" + indexWord);
%>
<h3>关键词:<%=indexWord%></h3>
<h3>匹配项:</h3>
<%
List<String> suitables = (List<String>) session.getAttribute("suitable");
for(String suitable:suitables){
%>
<h4><%=suitable%></h4>
<%
}
%>
</body>
</html>
3.error.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>error</title>
</head>
<body>
<h1 style="color: red">你的用户名或者密码有误!</h1>
</body>
</html>
三 ES导入数据
curl -HContent-Type:application/json -XPUT 'http://hadoop:9200/chinese/test/3?pretty' -d \\
'
{
"content":"运动员还在国际舞台当中取得冠军"
}
'
curl -HContent-Type:application/json -XPUT 'http://hadoop:9200/chinese/test/4?pretty' -d \\
'
{
"content":"运动员，指从事体育运动的人员，词语起源于古希腊文。运动员分为运动健将、一级运动员、二级运动员、三级运动员、少年级运动员五个技术等级。"
}
'
curl -HContent-Type:application/json -XPUT 'http://hadoop:9200/chinese/test/7?pretty' -d \\
'
{
"content":"SSM框架简要介绍_Mr.zhou_Zxy-CSDN博客_简要介绍ssm框架"
}
'
等数据....
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