java操作elasticsearch 5.6.0查询、插入

浅浅的花香味﹌ 2021-09-16 04:26 242阅读 0赞

[https://blog.csdn.net/lixin2151408/article/details/78276513][https_blog.csdn.net_lixin2151408_article_details_78276513]

**需注意：**

1、ES5\*以上版本需要jdk1.8

2、1.8JDK需tomcat 8

# **一、新建maven项目，添加依赖** #

<dependencies>
    
    <dependency>
    
    <groupId>junit</groupId>
    
    <artifactId>junit</artifactId>
    
    <version>4.9</version>
    
    </dependency>
    
    <dependency>
    
    <groupId>jdk.tools</groupId>
    
    <artifactId>jdk.tools</artifactId>
    
    <version>1.8</version>
    
    <scope>system</scope>
    
    <systemPath>C:/Program Files/Java/jdk1.8.0_144/lib/tools.jar</systemPath>
    
    </dependency>
    
    
    <dependency>
    
    <groupId>org.elasticsearch</groupId>
    
    <artifactId>elasticsearch</artifactId>
    
    <version>5.6.0</version>
    
    </dependency>
    
    <dependency>
    
    <groupId>org.elasticsearch.client</groupId>
    
    <artifactId>transport</artifactId>
    
    <version>5.6.0</version>
    
    </dependency>
    
    <dependency>
    
    <groupId>org.apache.logging.log4j</groupId>
    
    <artifactId>log4j-api</artifactId>
    
    <version>2.7</version>
    
    </dependency>
    
    <dependency>
    
    <groupId>org.apache.logging.log4j</groupId>
    
    <artifactId>log4j-core</artifactId>
    
    <version>2.7</version>
    
    </dependency>
    
    </dependencies>

二、新建log4j相关文件

**在main文件夹下新建resource文件夹，新建log4j.properties和log4j2.xml**

**log4j.properties**

appender.console.type = Console
    
    appender.console.name = console
    
    appender.console.layout.type = PatternLayout
    
    
    rootLogger.level = info
    
    rootLogger.appenderRef.console.ref = console

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
    
     <Configuration status="WARN">
    
        <Appenders>
    
            <Console name="Console" target="SYSTEM_OUT">
    
                <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    
            </Console>
    
            </Appenders>
    
        <Loggers>
    
            <Root level="error">
    
                <AppenderRef ref="Console"/>
    
            </Root>
    
        </Loggers>
    
    </Configuration>

# **三、查询** #

**在es中新建索引/blog/article ，插入几条数据；  
（注意：这里IP地址写自己在elasticsearch.yml中写的network.host，port就写9300，虽然自己设置的es集群port是9200）**

public static void main(String[] args) {
    
    try {
    
    
    //设置集群名称
    
    
    Settings settings = Settings.builder().put("cluster.name", "elasticsearch").build();
    
    //创建client
    
    @SuppressWarnings("resource")
    
    TransportClient client = new PreBuiltTransportClient(settings)
    
    .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("0.0.0.0"), 9300));
    
    //写入数据
    
    // createDate(client);
    
    //搜索数据
    
    GetResponse response = client.prepareGet("blog", "article", "1").execute().actionGet();
    
    //输出结果
    
    System.out.println(response.getSource());
    
    
    //关闭client
    
    client.close();
    
    } catch (Exception e) {
    
    e.printStackTrace();
    
    }
    
    }

四、插入单条数据

**(因为在查询时已经创建client，因此这里直接引入了，单独插入需单独创建)**

/**
    
    * 插入单条数据
    
    * @param client
    
    */
    
    public static void createDate(Client client){
    
    Map<String,Object> map = new HashMap<String, Object>();
    
    map.put("title", "红楼梦");
    
    map.put("content", "重生之我是贾宝玉");
    
    map.put("newcontent", new String[]{"first","我是贾宝玉"}) ;
    
    map.put("about", "i'd like to play");
    
    try {
    
    IndexResponse response = client.prepareIndex("blog", "article",UUID.randomUUID().toString())
    
    .setSource(map).execute().actionGet();
    
    System.out.println("写入数据结果=" + response.status().getStatus() + "！id=" + response.getId());
    
    } catch (Exception e) {
    
    // TODO: handle exception
    
    e.printStackTrace();
    
    }

![Center][]

[https_blog.csdn.net_lixin2151408_article_details_78276513]: https://blog.csdn.net/lixin2151408/article/details/78276513
[Center]: /images/20210527/615aa49a72ce4f6b9c4fb2e8384f37d1.png