ElasticSearch-1 ES基础概念及命令操作

ElasticSearch-2 ES6 TransportClient + SpringBoot2 增删改查

ElasticSearch-3 ES6 TransportClient 实现全文检索

ElasticSearch-4 ES7 RestHighLevelClient + SpringBoot2 增删改查

ElasticSearch-5 ES7 RestHighLevelClient 实现仿京东搜索

• Controller

@RestController
public class ContentController {

    @Autowired
    private ContentService contentService;

    @GetMapping("/parse/{keyword}")
    public Boolean parse(@PathVariable("keyword") String keyword) throws Exception {
        return contentService.parseContent(keyword);
    }

    @GetMapping("/search/{keyword}/{pageNo}/{pageSize}")
    public List<Map<String,Object>> search(@PathVariable("keyword") String keyword,@PathVariable("pageNo") int pageNo,@PathVariable("pageSize") int pageSize) throws IOException {
        return contentService.searchPageHighlightBuilder(keyword, pageNo, pageSize);
    }
}

Service

@Service
public class ContentService {


    @Autowired
    private RestHighLevelClient restHighLevelClient;

    public Boolean parseContent(String keyword) throws Exception {
        ObjectMapper objectMapper = new ObjectMapper();
        List<Content> contents = new HtmlParseUtil().parseJD(keyword);

        BulkRequest bulkRequest = new BulkRequest();
        bulkRequest.timeout("2m");

        for (int i=0; i < contents.size(); i++) {
            bulkRequest.add(new IndexRequest("jd_goods").source(objectMapper.writeValueAsString(contents.get(i)),XContentType.JSON));
        }
        BulkResponse bulk = restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);
        return !bulk.hasFailures();
    }

    // 2、获取这些数据实现搜索功能
    public List<Map<String, Object>> searchPageHighlightBuilder(String keyword,int pageNo,int pageSize) throws IOException {
        if (pageNo <= 1) {
            pageNo = 1;
        }
        // 条件搜索
        SearchRequest searchRequest = new SearchRequest("jd_goods");
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();

        // 分页
        sourceBuilder.from(pageNo);
        sourceBuilder.size(pageSize);

        // 精准匹配
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", keyword);
        sourceBuilder.query(termQueryBuilder);
        sourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));

        // 高亮
        HighlightBuilder highlightBuilder = new HighlightBuilder();
        highlightBuilder.field("title");
        highlightBuilder.preTags("<span style='color:red'>");
        highlightBuilder.postTags("</span>");
        highlightBuilder.requireFieldMatch(true); // 多个高亮
        sourceBuilder.highlighter(highlightBuilder);

        // 执行搜索
        searchRequest.source(sourceBuilder);
        SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);

        // 解析结果
        ArrayList<Map<String, Object>> list = new ArrayList<>();
        for (SearchHit hit : searchResponse.getHits().getHits()) {

            // 解析高亮的字段
            Map<String, HighlightField> highlightFields = hit.getHighlightFields();
            HighlightField title = highlightFields.get("title");
            Map<String, Object> sourceAsMap = hit.getSourceAsMap(); // 原来的结果
            if (title != null) {
                Text[] fragments = title.fragments();
                String n_title = "";
                for (Text text: fragments) {
                    n_title += text;
                }
                sourceAsMap.put("title",n_title);
            }
            list.add(hit.getSourceAsMap());
        }
        return list;
    }
}

• pojo

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Content {
    private String title;
    private String img;
    private String price;
}

• utils

@Component
public class HtmlParseUtil {
    public static void main(String[] args) throws Exception {
        new HtmlParseUtil().parseJD("娃哈哈").forEach(System.out::println);
    }

    public List<Content> parseJD(String keyword) throws Exception {

        String url = "https://search.jd.com/Search?keyword="+keyword+"&enc=utf-8";

        Document document = Jsoup.parse(new URL(url), 30000);
        Element element = document.getElementById("J_goodsList");

        Elements elements = element.getElementsByTag("li");

        ArrayList<Content> goodsList= new ArrayList<>();
        for (Element el : elements) {
            String img = el.getElementsByTag("img").eq(0).attr("source-data-lazy-img");
            String price = el.getElementsByClass("p-price").eq(0).text();
            String title = el.getElementsByClass("p-name").eq(0).text();

            Content content = new Content();
            content.setImg(img);
            content.setPrice(price);
            content.setTitle(title);
            goodsList.add(content);
        }
        return goodsList;
    }
}

• index

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">

<head>
    <meta charset="utf-8"/>
    <title>狂神说Java-ES仿京东实战</title>
    <link rel="stylesheet" th:href="@{/css/style.css}"/>
    <script th:src="@{/js/vue.min.js}"></script>
    <script th:src="@{/js/axios.min.js}"></script>
</head>

<body class="pg">
<div class="page" id="app">
    <div id="mallPage" class=" mallist tmall- page-not-market ">

        <!-- 头部搜索 -->
        <div id="header" class=" header-list-app">
            <div class="headerLayout">
                <div class="headerCon ">
                    <!-- Logo-->
                    <h1 id="mallLogo">
                        <img th:src="@{/images/jdlogo.png}" alt="">
                    </h1>

                    <div class="header-extra">

                        <!--搜索-->
                        <div id="mallSearch" class="mall-search">
                            <form name="searchTop" class="mallSearch-form clearfix">
                                <fieldset>
                                    <legend>天猫搜索</legend>
                                    <div class="mallSearch-input clearfix">
                                        <div class="s-combobox" id="s-combobox-685">
                                            <div class="s-combobox-input-wrap">
                                                <input v-model="keyword" type="text" autocomplete="off" value="dd" id="mq"
                                                       class="s-combobox-input" aria-haspopup="true">
                                            </div>
                                        </div>
                                        <button @click.prevent="searchKey" type="submit" id="searchbtn">搜索</button>
                                    </div>
                                </fieldset>
                            </form>
                            <ul class="relKeyTop">
                                <li><a>狂神说Java</a></li>
                                <li><a>狂神说前端</a></li>
                                <li><a>狂神说Linux</a></li>
                                <li><a>狂神说大数据</a></li>
                                <li><a>狂神聊理财</a></li>
                            </ul>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- 商品详情页面 -->
        <div id="content">
            <div class="main">
                <!-- 品牌分类 -->
                <form class="navAttrsForm">
                    <div class="attrs j_NavAttrs" style="display:block">
                        <div class="brandAttr j_nav_brand">
                            <div class="j_Brand attr">
                                <div class="attrKey">
                                    品牌
                                </div>
                                <div class="attrValues">
                                    <ul class="av-collapse row-2">
                                        <li><a href="#"> 狂神说 </a></li>
                                        <li><a href="#"> Java </a></li>
                                    </ul>
                                </div>
                            </div>
                        </div>
                    </div>
                </form>

                <!-- 排序规则 -->
                <div class="filter clearfix">
                    <a class="fSort fSort-cur">综合<i class="f-ico-arrow-d"></i></a>
                    <a class="fSort">人气<i class="f-ico-arrow-d"></i></a>
                    <a class="fSort">新品<i class="f-ico-arrow-d"></i></a>
                    <a class="fSort">销量<i class="f-ico-arrow-d"></i></a>
                    <a class="fSort">价格<i class="f-ico-triangle-mt"></i><i class="f-ico-triangle-mb"></i></a>
                </div>

                <!-- 商品详情 -->
                <div class="view grid-nosku">

                    <div class="product" v-for="result in results">
                        <div class="product-iWrap">
                            <!--商品封面-->
                            <div class="productImg-wrap">
                                <a class="productImg">
                                    <img :src="result.img">
                                </a>
                            </div>
                            <!--价格-->
                            <p class="productPrice">
                                <em><b>¥</b>{{result.price}}</em>
                            </p>
                            <!--标题-->
                            <p class="productTitle">
                                <a v-html="result.title"></a>
                            </p>
                            <!-- 店铺名 -->
                            <div class="productShop">
                                <span>店铺： 狂神说Java </span>
                            </div>
                            <!-- 成交信息 -->
                            <p class="productStatus">
                                <span>月成交<em>999笔</em></span>
                                <span>评价 <a>3</a></span>
                            </p>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>


<script th:src="@{/js/axios.min.js}"></script>
<script th:src="@{/js/vue.min.js}"></script>

<script>
    new Vue({
        el: '#app',
        data: {
            keyword:'', // 搜索的关键字
            results:[]  // 搜索结果
        },
        methods:{
            searchKey(){
                var keyword = this.keyword;


                // 对接接口
                axios.get('search/' + keyword + "/1/10").then(response => {
                    // console.log(response);
                    this.results = response.data; // 绑定数据
                })

            }
        }
    })
</script>
</body>
</html>

静态资源：https://pan.baidu.com/s/1GG9IyeIxPa6z0UJztDqUsQ 验证码gnpb
power by 狂神