ElasticSearch快速入门（三）=＞集成Spring Boot + 效仿京东搜索小实战

痛定思痛。 2023-10-03 13:43 27阅读 0赞

## 六、集成Spring Boot ##

### 6.1 环境的搭建 ###

*  新建一个空项目
 *  新建一个spring boot模块
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center]
 *  发现导入的默认es依赖和我们本地的es版本不一样
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 1]
 *  自定义es 的版本
    
        <properties>
            <java.version>1.8</java.version>
            
            <elasticsearch.version>7.6.1</elasticsearch.version>
        </properties>
 *  编写配置类ElasticSearchClientConfig

@Bean
    public RestHighLevelClient restHighLevelClient() {
        
        RestHighLevelClient client = new RestHighLevelClient(
            RestClient.builder(
                new HttpHost("localhost", 9200, "http")));
        return client;
    }

### 6.2 API测试 ###

#### 6.2.1 关于索引的API测试 ####

> **创建索引**

代码实现

@Autowired
    @Qualifier("restHighLevelClient")
    private RestHighLevelClient client;
    //测试索引的创建
    @Test
    public void testCreateIndex() throws IOException {
        
        // 1、创建索引请求
        CreateIndexRequest request = new CreateIndexRequest("cvzhanshi_index");
        // 2、客户端执行请求 IndicesClient, 请求后获得响应
        CreateIndexResponse createIndexResponse = client.indices().create(request, RequestOptions.DEFAULT);
        System.out.println(createIndexResponse);
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 2]

> **判断索引是否存在**

代码实现

//测试获取索引
    @Test
    void testExistIndex() throws IOException{
        
        GetIndexRequest request = new GetIndexRequest("cvzhanshi_index");
        boolean exists = client.indices().exists(request, RequestOptions.DEFAULT);
        System.out.println(exists);
    }

![在这里插入图片描述][aad70824efc84deaade803050d85300d.png_pic_center]

换一个不存在的索引名字

![在这里插入图片描述][2725857cb4c249ee8d92ce90edf688ec.png_pic_center]

> **删除索引**

代码实现

// 测试删除索引
    @Test
    void testDeleteIndex() throws IOException {
        
        DeleteIndexRequest request = new DeleteIndexRequest("cvzhanshi_index");
        //删除
        AcknowledgedResponse delete = client.indices().delete(request, RequestOptions.DEFAULT);
        System.out.println(delete.isAcknowledged());
    
    }

![在这里插入图片描述][62480c9c11634a07ba7d3f6d08977401.png_pic_center]

--------------------

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 3]

> **完整代码**

@SpringBootTest
    class EsApiApplicationTests {
        
    
        @Autowired
        @Qualifier("restHighLevelClient")
        private RestHighLevelClient client;
        //测试索引的创建
        @Test
        public void testCreateIndex() throws IOException {
        
            // 1、创建索引请求
            CreateIndexRequest request = new CreateIndexRequest("cvzhanshi_index");
            // 2、客户端执行请求 IndicesClient, 请求后获得响应
            CreateIndexResponse createIndexResponse = client.indices().create(request, RequestOptions.DEFAULT);
            System.out.println(createIndexResponse);
        }
    
        //测试获取索引
        @Test
        void testExistIndex() throws IOException{
        
            GetIndexRequest request = new GetIndexRequest("cvzhanshi_index1");
            boolean exists = client.indices().exists(request, RequestOptions.DEFAULT);
            System.out.println(exists);
        }
    
        // 测试删除索引
        @Test
        void testDeleteIndex() throws IOException {
        
            DeleteIndexRequest request = new DeleteIndexRequest("cvzhanshi_index");
            //删除
            AcknowledgedResponse delete = client.indices().delete(request, RequestOptions.DEFAULT);
            System.out.println(delete.isAcknowledged());
    
        }
    }

#### 6.2.2 关于文档的API测试 ####

> 创建实体类

/**
     * @author cVzhanshi
     * @create 2021-08-14 14:19
     */
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    @Component
    public class User {
        
        private String name;
        private int age;
    }

导入json依赖

<dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.2.74</version>
    </dependency>

> **添加文档（插入）**

代码实现

//测试文档的添加
    @Test
    public void testAddDocument() throws IOException {
        
        //创建对象
        User user = new User("cvzhanshi", 20);
        //创建请求
        IndexRequest request = new IndexRequest("cvzhanshi_index");
        //规则 put /kuang_index/_doc/1
        request.id("1");
        //设置请求超时时间 1s
        request.timeout(TimeValue.timeValueSeconds(1));
        // 将我们的数据放入请求  json
        request.source(JSON.toJSONString(user), XContentType.JSON);
        // 客户端发送请求 , 获取响应的结果
        IndexResponse indexResponse  = client.index(request, RequestOptions.DEFAULT);
    
        System.out.println(indexResponse.toString());
        System.out.println(indexResponse.status());
    
    }

![在这里插入图片描述][dfdf0725adf449de852dbef47f08714a.png_pic_center]

--------------------

![在这里插入图片描述][3d3ccbdbded74eeea43aeb96b6308b3d.png_pic_center]

> **判断文档是否存在**

代码实现

//判断文档是否存在
    @Test
    void testIsExists() throws IOException {
        
        GetRequest getRequest = new GetRequest("cvzhanshi_index", "1");
        // 不获取返回的 _source 的上下文了
        getRequest.fetchSourceContext(new FetchSourceContext(false));
        getRequest.storedFields("_none_");
    
        boolean exists = client.exists(getRequest, RequestOptions.DEFAULT);
        System.out.println(exists);
    
    }

![在这里插入图片描述][e79727dbbf104fd2ad82237a15f4de11.png_pic_center]

> 获取文档信息

代码实现

//获取文档信息
    @Test
    void testGetDocument() throws IOException {
        
        GetRequest getRequest = new GetRequest("cvzhanshi_index", "1");
        // 不获取返回的 _source 的上下文了
        //		getRequest.fetchSourceContext(new FetchSourceContext(false));
        //		getRequest.storedFields("_none_");
        GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
        System.out.println(getResponse);
        System.out.println(getResponse.getSourceAsString());
    }

![在这里插入图片描述][71b42f0fa00748cb9487fd7a15c687ee.png_pic_center]

> 更新文档信息

代码实现

//获取文档信息
    @Test
    void testUpdateDocument() throws IOException {
        
        UpdateRequest request = new UpdateRequest("cvzhanshi_index","1");
        request.timeout("1s");
    
        User user = new User("cv战士", 21);
        request.doc(JSON.toJSONString(user),XContentType.JSON);
    
        UpdateResponse update = client.update(request, RequestOptions.DEFAULT);
        System.out.println(update.status());
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 4]

> 删除文档信息

代码实现

// 删除文档记录
    @Test
    void testDeleteRequest() throws IOException {
        
        DeleteRequest deleteRequest = new DeleteRequest("cvzhanshi_index", "1");
        deleteRequest.timeout("1s");
        DeleteResponse deleteResponse = client.delete(deleteRequest, RequestOptions.DEFAULT);
        System.out.println(deleteResponse.status());
    }

![在这里插入图片描述][7e967adbd85148c99a98361cbb2a1e6a.png_pic_center]

> **批量插入数据**

代码实现

// 特殊的，真的项目一般都会批量插入数据！
    @Test
    void testBulkRequest() throws IOException {
        
        BulkRequest bulkRequest = new BulkRequest();
        bulkRequest.timeout("10s");
    
        List<User> userList = new ArrayList<>();
        userList.add(new User("cvzhanshi",20));
        userList.add(new User("user",21));
        userList.add(new User("ursula",22));
        userList.add(new User("wile",23));
        userList.add(new User("CVZHANSHI",24));
    
        for (int i = 0;i< userList.size();i++){
        
            bulkRequest.add(
                new IndexRequest("cvzhanshi_index")
                .id("" + (i+1))
                .source(JSON.toJSONString(userList.get(i)),XContentType.JSON)
            );
        }
        BulkResponse bulk = client.bulk(bulkRequest, RequestOptions.DEFAULT);
        System.out.println(bulk.hasFailures());//false 返回是否失败，false表示成功
    
    }

![在这里插入图片描述][efbb1e68e46e4fefa4318a8e91a25e07.png_pic_center]

**当然批量更新，删除等操作类似**

![在这里插入图片描述][f27ffc4a871149589ab0dd96897af222.png_pic_center]

> 查询

语法实现

// 查询
    // SearchRequest 搜索请求
    // SearchSourceBuilder 条件构造
    //  HighlightBuilder 构建高亮
    //  TermQueryBuilder 精确查询
    //  MatchAllQueryBuilder
    //  xxx QueryBuilder 对应我们刚才看到的命令！
    @Test
    void testSearch() throws IOException {
        
        SearchRequest searchRequest = new SearchRequest("cvzhanshi_index");
        //构建搜索条件
        SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
    
        //查询条件,我们可以使用SearchSourceBuilder工具来实现
        //精确匹配QueryBuilders.termQuery()
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("name", "cvzhanshi");
        sourceBuilder.query(termQueryBuilder);
        sourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));
    
        searchRequest.source(sourceBuilder);
    
        SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
        System.out.println(JSON.toJSONString(searchResponse));
        System.out.println("+++++++++++++++++++++++++++++++++++++++++");
        for (SearchHit hit : searchResponse.getHits()) {
        
            System.out.println(hit.getSourceAsMap());
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 5]

> 完整代码

@SpringBootTest
    class EsApiApplicationTests {
        
    
        @Autowired
        @Qualifier("restHighLevelClient")
        private RestHighLevelClient client;
    
        //测试文档的添加
        @Test
        void testAddDocument() throws IOException {
        
            //创建对象
            User user = new User("cvzhanshi", 20);
            //创建请求
            IndexRequest request = new IndexRequest("cvzhanshi_index");
            //规则 put /kuang_index/_doc/1
            request.id("1");
            //设置请求超时时间 1s
            request.timeout(TimeValue.timeValueSeconds(1));
            // 将我们的数据放入请求  json
            request.source(JSON.toJSONString(user), XContentType.JSON);
            // 客户端发送请求 , 获取响应的结果
            IndexResponse indexResponse  = client.index(request, RequestOptions.DEFAULT);
    
            System.out.println(indexResponse.toString());
            System.out.println(indexResponse.status());
        }
    
        //判断文档是否存在
        @Test
        void testIsExists() throws IOException {
        
            GetRequest getRequest = new GetRequest("cvzhanshi_index", "1");
            // 不获取返回的 _source 的上下文了
            getRequest.fetchSourceContext(new FetchSourceContext(false));
            getRequest.storedFields("_none_");
    
            boolean exists = client.exists(getRequest, RequestOptions.DEFAULT);
            System.out.println(exists);
    
        }
    
        //获取文档信息
        @Test
        void testGetDocument() throws IOException {
        
            GetRequest getRequest = new GetRequest("cvzhanshi_index", "1");
            // 不获取返回的 _source 的上下文了
            //		getRequest.fetchSourceContext(new FetchSourceContext(false));
            //		getRequest.storedFields("_none_");
            GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
            System.out.println(getResponse);
            System.out.println(getResponse.getSourceAsString());
        }
    
        //更新文档信息
        @Test
        void testUpdateDocument() throws IOException {
        
            UpdateRequest request = new UpdateRequest("cvzhanshi_index","1");
            request.timeout("1s");
    
            User user = new User("cv战士", 21);
            request.doc(JSON.toJSONString(user),XContentType.JSON);
    
            UpdateResponse update = client.update(request, RequestOptions.DEFAULT);
            System.out.println(update.status());
        }
        // 删除文档记录
        @Test
        void testDeleteRequest() throws IOException {
        
            DeleteRequest deleteRequest = new DeleteRequest("cvzhanshi_index", "1");
            deleteRequest.timeout("1s");
            DeleteResponse deleteResponse = client.delete(deleteRequest, RequestOptions.DEFAULT);
            System.out.println(deleteResponse.status());
        }
    
    
        // 特殊的，真的项目一般都会批量插入数据！
        @Test
        void testBulkRequest() throws IOException {
        
            BulkRequest bulkRequest = new BulkRequest();
            bulkRequest.timeout("10s");
    
            List<User> userList = new ArrayList<>();
            userList.add(new User("cvzhanshi",20));
            userList.add(new User("user",21));
            userList.add(new User("ursula",22));
            userList.add(new User("wile",23));
            userList.add(new User("CVZHANSHI",24));
    
            for (int i = 0;i< userList.size();i++){
        
                bulkRequest.add(
                    new IndexRequest("cvzhanshi_index")
                    .id("" + (i+1))
                    .source(JSON.toJSONString(userList.get(i)),XContentType.JSON)
                );
            }
            BulkResponse bulk = client.bulk(bulkRequest, RequestOptions.DEFAULT);
            System.out.println(bulk.hasFailures());//false 返回是否失败，false表示成功
        }
    
        // 查询
        // SearchRequest 搜索请求
        // SearchSourceBuilder 条件构造
        //  HighlightBuilder 构建高亮
        //  TermQueryBuilder 精确查询
        //  MatchAllQueryBuilder
        //  xxx QueryBuilder 对应我们刚才看到的命令！
        @Test
        void testSearch() throws IOException {
        
            SearchRequest searchRequest = new SearchRequest("cvzhanshi_index");
            //构建搜索条件
            SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
    
            //查询条件,我们可以使用SearchSourceBuilder工具来实现
            //精确匹配QueryBuilders.termQuery()
            TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("name", "cvzhanshi");
            sourceBuilder.query(termQueryBuilder);
            sourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));
    
            searchRequest.source(sourceBuilder);
    
            SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
            System.out.println(JSON.toJSONString(searchResponse));
            System.out.println("+++++++++++++++++++++++++++++++++++++++++");
            for (SearchHit hit : searchResponse.getHits()) {
        
                System.out.println(hit.getSourceAsMap());
            }
        }
    }

## 七、小实战-效仿京东搜索 ##

### 7.1 环境搭建 ###

*  新建spring boot项目
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 6]
 *  修改es的版本，与本地es版本对应，导入json依赖(肯定能用到)
    
        <properties>
            <java.version>1.8</java.version>
            
            <elasticsearch.version>7.6.1</elasticsearch.version>
        </properties>
        
        
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.74</version>
        </dependency>
 *  配置文件的编写
    
        server:
          port: 9090
        
        # 关闭thymeleaf缓存
        spring:
          thymeleaf:
            cache: false
 *  前端页面

> 前端页面可以关注公众号“狂神说”分享的网盘链接自行下载
> 
> ES资料地址：链接：https://pan.baidu.com/s/1PT3jLvCksOhq7kgAKzQm7g 提取码：s824

解压后

![在这里插入图片描述][d172fa772e424c18ae5eeb49a0e75209.png_pic_center]

粘贴进项目中

![在这里插入图片描述][63099d71038948c4bd4bf759191eaaee.png_pic_center]

*  测试，创建IndexController
    
        /**
         * @author cVzhanshi
         * @create 2021-08-14 17:05
         */
        @Controller
        public class IndexController {
              
        
            @GetMapping({
              "/","/index"})
            public String index(){
              
                return "index";
            }
        }
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 7]

### 7.2 爬取数据 ###

> 获取请求返回的数据，筛选出我们想要的数据

*  导入爬虫所需要的依赖
    
        
        <dependency>
            <groupId>org.jsoup</groupId>
            <artifactId>jsoup</artifactId>
            <version>1.13.1</version>
        </dependency>
 *  爬取数据的工具类的编写
    
        /**
         * @author cVzhanshi
         * @create 2021-08-15 10:36
         */
        @Component
        public class HtmlParseUtil {
              
            public List<Content> parseJD(String keywords) throws IOException {
              
                //获取请求:     https://search.jd.com/Search?keyword=java&enc=utf-8&wq=java&pvid=f807c58b66dc4baab4c7ed71834c36be
                //前提,联网,ajax不能获得
        
                String url = "https://search.jd.com/Search?keyword=" + keywords + "&enc=utf-8";
                //解析网页。(Jsoup返回Document就是浏览器Document对象)
                //        Document document = Jsoup.parse(new URL(url), 30000);
                //设置绕过登录
                Document document = Jsoup.connect(url).userAgent("Mozilla/5.0 (Windows NT 5.1; zh-CN) AppleWebKit/535.12 (KHTML, like Gecko) Chrome/22.0.1229.79 Safari/535.12").timeout(30000).get();
                System.out.println(document.html());
                //所有你在js中可以使用的方法，这里都能用!
                Element element = document.getElementById("J_goodsList");
                //获取所有的Li元素
                Elements elements = element.getElementsByTag("li");
                System.out.println(elements);
                List<Content> contents = new ArrayList<>();
        
                //获取元素中的内容,这el就是每一 个Li标签了!
                for (Element el : elements) {
              
                    //由于图片是延迟加载
                    //data-lazy-img
                    String img = el.getElementsByTag("img").eq(0).attr("data-lazy-img");
                    String price = el.getElementsByClass("p-price").eq(0).text();
                    String title = el.getElementsByClass("p-name").eq(0).text();
                    contents.add(new Content(img,price,title));
                }
                return contents;
            }
        }
 *  测试工具类
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 8]

### 7.3 业务的编写 ###

*  编写es的配置类
    
        /**
         * @author cVzhanshi
         * @create 2021-08-14 11:43
         */
        @Configuration
        public class ElasticSearchClientConfig {
              
            @Bean
            public RestHighLevelClient restHighLevelClient() {
              
                RestHighLevelClient client = new RestHighLevelClient(
                        RestClient.builder(
                                new HttpHost("localhost", 9200, "http")));
                return client;
            }
        }
 *  编写service层的ContentService
    
        /**
         * @author cVzhanshi
         * @create 2021-08-15 11:23
         */
        //业务的编写
        @Service
        public class ContentService {
              
        
            @Autowired
            private RestHighLevelClient restHighLevelClient;
        
            public Boolean parseContent(String keywords) throws IOException {
              
                List<Content> contents = new HtmlParseUtil().parseJD(keywords);
                BulkRequest bulkRequest = new BulkRequest();
                bulkRequest.timeout("2m");
                for (int i = 0; i < contents.size(); i++) {
              
                    bulkRequest.add(new IndexRequest("jd_goods")
                                    .source(JSON.toJSONString(contents.get(i)), XContentType.JSON)
                                   );
                }
                BulkResponse bulkResponse = restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);
                return !bulkResponse.hasFailures();
            }
        
            public List<Map<String, Object>> searchPage(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));
                //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 documentFields : searchResponse.getHits().getHits()) {
              
                    list.add(documentFields.getSourceAsMap());
                }
                System.out.println(list);
                return list;
            }
        
        
            // 2.获取这些数据实现搜索高亮功能
            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.requireFieldMatch(false); //多个高亮显示
                highlightBuilder.preTags("<span style='color:red'>");
                highlightBuilder.postTags("</span>");
                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()) {
              
                    Map<String, HighlightField> highlightFields = hit.getHighlightFields();
                    HighlightField title = highlightFields.get("title");
                    Map<String, Object> sourceAsMap = hit.getSourceAsMap(); //原来的结果!
                    //解析高亮的字段，将原来的字段换为我们高亮的字段即可!
                    if (title != null) {
              
                        Text[] fragments = title.fragments();
                        String n_title = "";
                        for (Text text : fragments) {
              
                            n_title += text;
                            sourceAsMap.put("title", n_title); //高亮字段替换掉原来的内容即可!
                        }
                    }
                    list.add(sourceAsMap);
                }
                return list;
            }
        }
 *  编写controller层的ContentController
    
        /**
         * @author cVzhanshi
         * @create 2021-08-15 11:25
         */
        @RestController
        public class ContentController {
              
            @Autowired
            private ContentService contentService;
        	
            //爬取数据
            @GetMapping("/parse/{keywords}")
            public Boolean parse(@PathVariable("keywords") String keywords) throws Exception {
              
                return contentService.parseContent(keywords);
            }
        	
            //搜索
            @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.searchPage(keyword, pageNo, pageSize);
                return contentService.searchPageHighlightBuilder(keyword, pageNo, pageSize);
            }
        }
 *  先进行数据的爬取，存入到es中，浏览器访问localhost:9090/parse/java
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 9]
 *  因为要使用vue在前端接收数据，所以我们学要vue的js
 *  找个空的文件夹运行命令
    
        npm install vue
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 10]
    
        npm install axios
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 11]
 *  在生成的文件中找到两个js，复制到项目中
    
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 12]

--------------------

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 13]

*  改写index.html，使用vue接收数据
    
        <!DOCTYPE html>
        <html xmlns:th="http://www.thymeleaf.org">
        
            <head>
                <meta charset="utf-8"/>
                <title>cv战士Java-ES仿京东实战</title>
                <link rel="stylesheet" th:href="@{/css/style.css}"/>
                
            </head>
        
            <body class="pg">
                <div class="page" id="app">
                    <div id="mallPage" class=" mallist tmall- page-not-market ">
        
                        
                        <div id="header" class=" header-list-app">
                            <div class="headerLayout">
                                <div class="headerCon ">
                                    
                                    <h1 id="mallLogo">
                                        <img th:src="@{/images/jdlogo.png}" alt="">
                                    </h1>
        
                                    <div class="header-extra">
        
                                        
                                        <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 type="submit" @click.prevent="searchKey" id="searchbtn">搜索</button>
                                                    </div>
                                                </fieldset>
                                            </form>
                                            <ul class="relKeyTop">
                                                <li><a>cv战士Java</a></li>
                                                <li><a>cv战士前端</a></li>
                                                <li><a>cv战士Linux</a></li>
                                                <li><a>cv战士大数据</a></li>
                                                <li><a>cv战士理财</a></li>
                                            </ul>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
        
                        
                        <div id="content">
                            <div class="main">
                                
                                <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="#"> cv战士 </a></li>
                                                        <li><a href="#"> Java </a></li>
                                                    </ul>
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </form>
        
                                
                                <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>
        
                                
                                <div class="view grid-nosku">
        
                                    <div class="product" v-for="result in results">
                                        <div class="product-iWrap">
                                            
                                            <div class="productImg-wrap">
                                                <a class="productImg">
                                                    <img :src="result.img">
                                                </a>
                                            </div>
                                            
                                            <p class="productPrice">
                                                <em>{
             {result.price}}</em>
                                            </p>
                                            
                                            <p class="productTitle">
                                                <a v-html="result.title"></a>
                                            </p>
                                            
                                            <div class="productShop">
                                                <span>店铺： cv战士Java </span>
                                            </div>
                                            
                                            <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: [] //搜索的结果
                        },
                        methods: {
                
                            searchKey() {
                
                                let keyword = this.keyword;
                                console.log(keyword);
                                //对接后端的接口
                                axios.get('search/' + keyword + "/1/20").then(response => {
                
                                    console.log(response);
                                    this.results = response.data;//绑定数据
                                })
                            }
                        }
                    })
        
                </script>
            </body>
        </html>

### 7.5 测试 ###

> 启动项目，直接访问localhost:9090/

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 14]

> 进行搜索，搜索的前提是，之前有把关键的数据爬取下来放在es中

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 15]

--------------------

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQ1NDA4Mzkw_size_16_color_FFFFFF_t_70_pic_center 16]

> 分享代码地址
> 
> Gitee：https://gitee.com/cvzhanshi-ursula/es-api.git
> 
> GitHub：https://github.com/cvzhanshi-ursula/es-api

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