程序员Spring-Boot码农笔记

elasticsearch入门到放弃之springboot el

2019-07-07  本文已影响73人  zhaoyunxing

代码地址：https://github.com/zhaoyunxing92/spring-boot-learn-box/tree/master/spring-boot-elasticsearch/spring-boot-data-elasticsearch

这个就跟我在以前写的【springboot mongodb配置解析】一样效果，单纯的以为设置好正好密码就可以很嗨皮的使用mongodb了，elasticsearch同样也遇到了该问题。期间的过程我不想多说了，直接往下看吧.(下面主要在x-pack开启模式下使用,正常模式下很简单不写了)

系列文章

参考文档

环境信息

环境信息很重要,不然很难成功

pom.xml文件

 <!--修改es版本这样设置最简单-->
<properties>
    <elasticsearch.version>6.4.0</elasticsearch.version>
</properties>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>transport</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>x-pack-transport</artifactId>
    <version>${elasticsearch.version}</version>
</dependency>

<!--这个好像要添加不然下载不到 spring-boot-starter-data-elasticsearch:6.4.0 -->
<repository>
    <id>spring-libs-snapshot</id>
    <name>Spring Snapshot Repository</name>
    <url>https://repo.spring.io/libs-snapshot</url>
</repository>

application.yml配置

spring:
  data:
    elasticsearch:
      repositories:
        enabled: true
      cluster-nodes: 172.26.104.209:9300 # 集群模式下用逗号分开
      cluster-name: elasticsearch
      properties:
        xpack.security.user: elastic:123456

spring-data-elasticsearch 主键解释

@Document

这个主键对应的ElasticsearchCase#createIndex()方法

@Id

看名字就知道了，不解释了

@Field

这个主键对应的ElasticsearchCase#setMappings()方法

spring-data-elasticsearch 正式编码

我这里是重写了TransportClient类，不过很抱歉elasticsearch的开发者说到8.0就换一种方式了。issues#188983

ElasticsearchConfig.java

主要是替换TransportClientFactoryBean为PreBuiltXPackTransportClient,支持x-pack

/**
 * @author zhaoyunxing
 * @date: 2019-07-07 09:47
 * @des: es 配置类
 * @see org.springframework.data.elasticsearch.client.TransportClientFactoryBean
 * @see org.springframework.data.elasticsearch.client.ClusterNodes
 */
@Configuration
@EnableConfigurationProperties(ElasticsearchProperties.class)
public class ElasticsearchConfig {

    private final ElasticsearchProperties properties;

    public ElasticsearchConfig(ElasticsearchProperties properties) {
        this.properties = properties;
    }

    @Bean
    public TransportClient transportClient(){
        return new PreBuiltXPackTransportClient(settings())
                .addTransportAddresses(addresses());
    }

    /**
     * .put("client.transport.sniff", true)
     * .put("client.transport.ignore_cluster_name", false)
     * .put("client.transport.ping_timeout", clientPingTimeout)
     * .put("client.transport.nodes_sampler_interval", clientNodesSamplerInterval)
     *
     * @return Settings
     */
    private Settings settings() {
        Settings.Builder builder = Settings.builder();
        builder.put("cluster.name", properties.getClusterName());
        properties.getProperties().forEach(builder::put);
        return builder.build();
    }

    private TransportAddress[] addresses() {
        String clusterNodesStr = properties.getClusterNodes();
        Assert.hasText(clusterNodesStr, "Cluster nodes source must not be null or empty!");
        String[] nodes = StringUtils.delimitedListToStringArray(clusterNodesStr, ",");

        return Arrays.stream(nodes).map(node -> {
            String[] segments = StringUtils.delimitedListToStringArray(node, ":");
            Assert.isTrue(segments.length == 2,
                    () -> String.format("Invalid cluster node %s in %s! Must be in the format host:port!", node, clusterNodesStr));
            String host = segments[0].trim();
            String port = segments[1].trim();
            Assert.hasText(host, () -> String.format("No host name given cluster node %s!", node));
            Assert.hasText(port, () -> String.format("No port given in cluster node %s!", node));
            return new TransportAddress(toInetAddress(host), Integer.valueOf(port));
        }).toArray(TransportAddress[]::new);
    }

    private static InetAddress toInetAddress(String host) {
        try {
            return InetAddress.getByName(host);
        } catch (UnknownHostException ex) {
            throw new IllegalArgumentException(ex);
        }
    }
}

Article.java

主要看点是我时间格式的处理解决上篇【elasticsearch入门到放弃之elasticsearch-in-java】遗留的问题

/**
 * @author zhaoyunxing
 * @date: 2019-06-28 14:38
 * @des:
 */
@Data
@ToString
@AllArgsConstructor
@NoArgsConstructor
@Document(indexName = "blog", type = "article")
public class Article {
    @Id
    @Field(type = FieldType.Text, store = false)
    private String id;
    /**
     * 文章名称
     */
    @Field(type = FieldType.Text, store = true, analyzer = "ik_smart", searchAnalyzer = "ik_max_word")
    private String name;
    /**
     * 内容
     */
    @Field(type = FieldType.Text, store = true, analyzer = "ik_smart", searchAnalyzer = "ik_max_word")
    private String content;
    /**
     * 创建时间 采用自定义的时间格式
     */
    @Field(type = FieldType.Date, store = true, format = DateFormat.custom, pattern = "yyyy-MM-dd HH:mm:ss:SSS||yyyy-MM-dd||epoch_millis||date_optional_time")
    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd HH:mm:ss:SSS", timezone = "GMT+8")
    private Date createTime;
}

CURD操作

这里你只要熟悉spring-data-elasticsearch的命名规则就很嗨皮的编写代码的，不了解就去翻文档吧,IDAE编辑器也会提示你怎么写。我就直接贴代码了

@RunWith(SpringRunner.class)
@SpringBootTest
public class ElasticsearchCase {

    @Autowired
    private ArticleService articleService;
    @Autowired
    private ElasticsearchTemplate elasticsearchTemplate;

    /**
     * 创建文章,更新文档只有保证id一直就可以了
     */
    @Test
    public void addDocument() {
        System.out.println("***********************一次性插入30条数据***********************");
        List<Article> articles = new ArrayList<>(30);
        for (int i = 1; i <= 30; i++) {
            Article article = new Article();
            article.setName("elasticsearch入门到放弃之docker搭建" + i);
            article.setContent("在我的观念里elasticsearch是" + i + "大数据的产物");
            article.setCreateTime(new Date());
            article.setId(String.valueOf(i));
            articles.add(article);
        }
        articleService.saveAll(articles);
    }

    /**
     * 查询全部 默认是查询10条数据的，但是findAll()查询的是全部数据，说明它真的是findAll()
     */
    @Test
    public void findAll() {
        System.out.println("***********************获取全部数据***********************");
        articleService.findAll().forEach(System.out::println);
    }

    /**
     * 根据id查询
     */
    @Test
    public void findById() {
        System.out.println("***********************根据id查询***********************");
        Article article = articleService.findById(String.valueOf(27)).orElseGet(Article::new);
        System.out.println(article);
    }

    /**
     * 根据名称查询 默认值返回10条数据
     */
    @Test
    public void findByName() {
        System.out.println("***********************根据名称查询***********************");
        articleService.findArticleByName("docker搭建").forEach(System.out::println);
    }

    /**
     * 标题中包含或者内容中包含,设置分页 三条数据分页
     */
    @Test
    public void findArticleByNameOrContent() {
        System.out.println("***********************根据名称和内容查询***********************");
        articleService.findArticleByNameOrContent("docker搭建", "30", PageRequest.of(0, 3)).forEach(System.out::println);
    }

    /**
     * 指定时间域名并且根据id进行deac排序(aec)类似不写了
     */
    @Test
    public void findArticlesByCreateTimeBetweenAndOrderByCreateTimeDesc() {
        System.out.println("***********************指定时间域名并且根据id进行deac排序***********************");

        articleService.findArticlesByCreateTimeBetweenOrderByIdDesc("2019-07-07 14:41:39:998", "2019-07-07 16:33:29:175", PageRequest.of(0, 3)).forEach(System.out::println);
    }

    /**
     * 模糊匹配查询对应的是QueryString方法这个可以参考：<a>https://www.jianshu.com/p/9f6f7f67df4e</a>
     */
    @Test
    public void nativeSearchQuery() {
        System.out.println("***********************模糊查询***********************");
        // 构建查询对象
        NativeSearchQuery query = new NativeSearchQueryBuilder()
                .withQuery(QueryBuilders.queryStringQuery("sunny在学用docker搭建elasticsearch环境").defaultField("content"))
                .withPageable(PageRequest.of(0, 3))
                .build();

        elasticsearchTemplate.queryForList(query, Article.class).forEach(System.out::println);
    }

    /**
     * 删除文章 deleteAll()、delete() 这些方法类似不写了
     */
    @Test
    public void deleteDocumentById() {
        System.out.println("***********************根据id删除***********************");
        articleService.deleteById("1");
    }
}

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