SpringBoot集成Elasticsearch并进行增删改查操作_spring-boot-data-elastic修改指定字段数据

作者：菜鸟追梦旅行 | 2024-02-08 09:42:07

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spring-boot-data-elastic修改指定字段数据

今天给大家简单的介绍一下SpringBoot如何集成Elasticsearch，并简单的介绍一下基于SpringBoot模式下怎么进行简单的增删改查操作，这边增删改查操作有点类似于JPA的模式。（什么是JPA模式，大家可以自行搜索答案）

废话不多说，现在马上开始我们今天的内容。如何新建Springboot项目我这边就不废话了，不会的同学可以看我以前写的教程。

文章地址：https://blog.csdn.net/linzhiqiang0316/article/details/79177132

1.首先是引入相关的依赖，下面是我的pom文件。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>

   <groupId>com.elasticsearch</groupId>
   <artifactId>elasticsearch</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>jar</packaging>

   <name>ElasticSearch</name>
   <description>ElasticSearch project for Spring Boot</description>

   <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>2.0.2.RELEASE</version>
       <relativePath/> 
   </parent>

   <properties>
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
       <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
       <java.version>1.8</java.version>
   </properties>

   <dependencies>
       
       <dependency>
           <groupId>com.google.code.gson</groupId>
           <artifactId>gson</artifactId>
           <version>2.8.0</version>
       </dependency>

       
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-data-elasticsearch</artifactId>
           <version>2.0.2.RELEASE</version>
       </dependency>
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
       </dependency>

       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
           <scope>test</scope>
       </dependency>
   </dependencies>

   <build>
       <plugins>
           <plugin>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
           </plugin>
       </plugins>
   </build>
</project>
pom.xml文件中最重要的其实就是引入ES（Elasticsearch的简称后面我都这么叫），也就是spring-boot-starter-data-elasticsearch 依赖。

2.接下来就是对应的配置文件了，具体配置文件如下所示：

# elasticsearch集群名称，默认的是elasticsearch
spring.data.elasticsearch.cluster-name=my-application

#节点的地址注意api模式下端口号是9300，千万不要写成9200
spring.data.elasticsearch.cluster-nodes=192.168.11.24:9300

#是否开启本地存储
spring.data.elasticsearch.repositories.enable=true
3.索引对应的实体类如下所示：

package com.elasticsearch.entity;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;

/**
* @author linzhiqiang
* @date 2018/5/16
*/
@Document(indexName = "company",type = "employee", shards = 1,replicas = 0, refreshInterval = "-1")
public class Employee {
@Id
private String id;
@Field
private String firstName;
@Field
private String lastName;
@Field
private Integer age = 0;
@Field
private String about;

public String getId() {
return id;
}

public void setId(String id) {
this.id = id;
}

public String getFirstName() {
return firstName;
}

public void setFirstName(String firstName) {
this.firstName = firstName;
}

public String getLastName() {
return lastName;
}

public void setLastName(String lastName) {
this.lastName = lastName;
}

public Integer getAge() {
return age;
}

public void setAge(Integer age) {
this.age = age;
}

public String getAbout() {
return about;
}

public void setAbout(String about) {
this.about = about;
}
}
4.实体类对应的dao接口如下所示：

package com.elasticsearch.dao;

/**
* Created by 19130 on 2018/5/16.
*/
import com.elasticsearch.entity.Employee;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import org.springframework.stereotype.Component;
/**
* @author linzhiqiang
*/
@Component
public interface EmployeeRepository extends ElasticsearchRepository<Employee,String>{

/**
* 查询雇员信息
* @param id
* @return
*/
Employee queryEmployeeById(String id);
}
5.实体类对应的控制类如下所示：

package com.elasticsearch.controller;
import com.elasticsearch.dao.EmployeeRepository;
import com.elasticsearch.entity.Employee;
import com.google.gson.Gson;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
* @author linzhiqiang
*/
@RestController
@RequestMapping("es")
public class EmployeeController {

@Autowired
private EmployeeRepository employeeRepository;

/**
* 添加
* @return
*/
@RequestMapping("add")
public String add() {
Employee employee = new Employee();
employee.setId("1");
employee.setFirstName("xuxu");
employee.setLastName("zh");
employee.setAge(26);
employee.setAbout("i am in peking");
employeeRepository.save(employee);
System.err.println("add a obj");
return "success";
}

/**
* 删除
* @return
*/
@RequestMapping("delete")
public String delete() {
Employee employee = employeeRepository.queryEmployeeById("1");
employeeRepository.delete(employee);
return "success";
}

/**
* 局部更新
* @return
*/
@RequestMapping("update")
public String update() {
Employee employee = employeeRepository.queryEmployeeById("1");
employee.setFirstName("哈哈");
employeeRepository.save(employee);
System.err.println("update a obj");
return "success";
}
/**
* 查询
* @return
*/
@RequestMapping("query")
public Employee query() {
Employee accountInfo = employeeRepository.queryEmployeeById("1");
System.err.println(new Gson().toJson(accountInfo));
return accountInfo;
}
}
以上所有的增删改查操作都要基于搭建好的ES系统（关于Linux上面如何搭建ES系统大家可以自行google）

关于我踩过的坑：

1.ES中API的端口号是9300而不是9200。

2.ES系统中Elasticsearch.yml配置文件中要加入network.host: 0.0.0.0，否则外网地址访问不了。

3.最新的资料一定要去官网上面查看，博客上面好多都是过时的。官网地址：https://www.elastic.co

4.注意JDK、ES、Springboot三者之间的版本，很多时候错误都是版本冲突引起的。

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