一、Solr 简介

  Solr是一个独立的企业级搜索应用服务器，它对外提供类似于Web-service的API接口。用户可以通过http请求，向搜索引擎服务器提交一定格式的XML文件，生成索引；也可以通过Http Get操作提出查找请求，并得到XML格式的返回结果。

二、Maven依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--slor依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-solr</artifactId>
</dependency>

三、Solr 配置

# 单机版:solr服务器配置 core1 相当于数据库名，需要创建
spring.data.solr.host=http://192.168.247.128:8983/solr/core1

四、操作Solr

1. 实体类

@Data
public class User implements Serializable {
    // 必须实现可序列化接口，要在网络上传输
    // 使用 @Field注解，里面的名字是根据你在solr数据库中配置的来决定
    @Field("id")
    private String id;
    @Field("item_name")
    private String name;
    @Field("item_sex")
    private String sex;
    @Field("item_address")
    private String address;
    @Field("item_host")
    private Integer host;
}

2. 业务接口与实现

public interface SolrService {
    List<User> addUser();
}

@Service
public class SolrServiceImpl implements SolrService {
    @Override
    public List<User> addUser() {
        List<User> list = new ArrayList<>();
        User user = new User();
        for (int i = 0; i <5 ; i++) {
            user.setId(UUID.randomUUID().toString().replace("-",""));
            user.setName("jack"+i);
            if( i % 2 ==0) {
                user.setSex("男");
            }else {
                user.setSex("女");
            }
            user.setAddress("太原市迎泽区"+i);
            user.setHost(73040+i);
            list.add(user);
        }
        return list;
    }
}

3. 控制器

@RestController
@RequestMapping("/solr")
@Slf4j
public class SolrController {
    @Autowired
    private SolrService solrService;
    // 获取solr客户端
    @Autowired
    private SolrClient solrClient;

    // 批量增加
    @PostMapping("/addUsers")
    public void addUsers() throws IOException, SolrServerException {
        List<User> users = solrService.addUser();
        solrClient.addBeans(users);
        // 提交数据
        solrClient.commit();
    }

    // 单个增加
    @PostMapping("/addUser")
    public void addUser() throws IOException, SolrServerException {
        User user = new User();
        user.setId("456788");
        user.setName("张慧");
        user.setAddress("北京市");
        user.setSex("女");
        user.setHost(456752);
        solrClient.addBean(user);
        solrClient.commit();
    }

    // 根据id查询
    @GetMapping("/getByIdFromSolr/{id}")
    public void getByIdFromSolr(@PathVariable("id") String id) throws IOException, SolrServerException {
        // 根据id查询内容
        SolrDocument solrDocument = solrClient.getById(id);
        // 获取filedName
        Collection<String> fieldNames = solrDocument.getFieldNames();
        // 获取file名和内容
        Map<String, Object> fieldValueMap = solrDocument.getFieldValueMap();
        List<SolrDocument> childDocuments = solrDocument.getChildDocuments();
        log.info("byId==================" + solrDocument);
        log.info("fieldNames==================" + fieldNames);
        log.info("fieldValueMap==================" + fieldValueMap);
        log.info("childDocuments==================" + childDocuments);

    }

    // 根据id删除
    @DeleteMapping("/delById/{id}")
    public void delById(@PathVariable("id") String id) throws IOException, SolrServerException {
        //根据id删除信息
        UpdateResponse updateResponse = solrClient.deleteById(id);
        //执行的时间
        long elapsedTime = updateResponse.getElapsedTime();

        int qTime = updateResponse.getQTime();
        //请求地址
        String requestUrl = updateResponse.getRequestUrl();
        //请求的结果{responseHeader={status=0,QTime=2}}
        NamedList<Object> response = updateResponse.getResponse();
        //请求结果的头{status=0,QTime=2}
        NamedList responseHeader = updateResponse.getResponseHeader();
        //请求的状态 0
        int status = updateResponse.getStatus();

        log.info("elapsedTime===========" + elapsedTime);
        log.info("qTime===========" + qTime);
        log.info("requestUrl===========" + requestUrl);
        log.info("response===========" + response);
        log.info("responseHeader===========" + responseHeader);
        log.info("status===========" + status);
    }
    // 查询solr
    @GetMapping("/queryFromSolr")
    public Object queryFromSolr() throws IOException, SolrServerException {
        //第一种方式
//        Map<String, String> queryParamMap = new HashMap<String, String>();
//        queryParamMap.put("q", "*:*");
//        queryParamMap.put("f1","id,name");
//        queryParamMap.put("sort","id asc");
//        MapSolrParams mapSolrParams = new MapSolrParams(queryParamMap);
//        solrClient.query(mapSolrParams);

        //第二种方式
        SolrQuery solrQuery = new SolrQuery();
        solrQuery.setQuery("*:*");
//        solrQuery.addField("*");
        solrQuery.add("q", "id:4567");

        solrQuery.setSort("id", SolrQuery.ORDER.asc);
        //设置查询的条数
        solrQuery.setRows(50);
        //设置查询的开始
        solrQuery.setStart(0);
        //设置高亮
        solrQuery.setHighlight(true);
        //设置高亮的字段
        solrQuery.addHighlightField("item_name");
        //设置高亮的样式
        solrQuery.setHighlightSimplePre("<font color='red'>");
        solrQuery.setHighlightSimplePost("</font>");
        log.info("{}",solrQuery);
        QueryResponse response = solrClient.query(solrQuery);
        //返回高亮显示结果
        Map<String, Map<String, List<String>>> highlighting = response.getHighlighting();
        //response.getResults();查询返回的结果
        SolrDocumentList documentList = response.getResults();
        for (SolrDocument solrDocument : documentList) {
            log.info("solrDocument==============" + solrDocument);
        }
        return documentList;
    }
}

4. 测试
   POST请求：localhost:9999/solr/addUsers

   
   批量操作

POST请求：localhost:9999/solr/addUser

单个增加

GET请求：localhost:9999/solr/getByIdFromSolr/456788

根据id查询

GET请求：localhost:9999/solr/queryFromSolr

查询solr

DELETE请求：localhost:9999/solr/delById/456788

根据id删除

5. 配置字段高亮显示

    /**
     * 设置结果高亮显示
     */
    @Test
    public void hl() throws IOException, SolrServerException {
        /**
         * 集群版CloudSolrClient继承自SolrClient 进行强转
         * 单机版不需要直接使用solrClient
         */
        CloudSolrClient cloudSolrClient =(CloudSolrClient)solrClient;
        //设置默认的操作实例
        cloudSolrClient.setDefaultCollection("collection1");
        //设置查找的参数
        SolrQuery query = new SolrQuery();
        query.setQuery("item_title:手机");
        //开启高亮
        query.setHighlight(true);
        //设置高亮字段
        query.addHighlightField("item_title");
        //前缀
        query.setHighlightSimplePre("<font color='red'>");
        //后缀
        query.setHighlightSimplePost("</font>");
        //执行查找
        QueryResponse response = cloudSolrClient.query(query);
        //打印高亮信息
        log.info(response.getHighlighting());
    }