小编geo*_*dri的帖子

我正在使用Spring启动并试图在User和Skill之间实现多对多的关系.我有一个表users_skills,其中包含user_id和skill_id列.在尝试实现关系时,我一直在STS中的@JoinColumn注释中得到"JoinColumn无法解析为类型"错误.以下是我的用户类

   @Entity
   @Table(name = "users")
   public class User {


@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private long id;
private String email;
private String firstName;
private String lastName;
private List<Skill> skills = new ArrayList<Skill>();



protected User() {}

public User(String email,String firstName, String lastName) {
    this.email = email;
    this.firstName = firstName;
    this.lastName = lastName;
}    


public Long getId() {
    return this.id;
}

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

public String getEmail() {
    return this.email;
}

public void setEmail(String email) {
    this.email = …

我正在尝试从 logstash docker 容器连接到 kafka docker 容器，但我总是收到以下消息：

 Connection to node 0 (localhost/127.0.0.1:9092) could not be established. Broker may not be available.

我的 docker-compose.yml 文件是

version: '3.2'

services:
  elasticsearch:
    build:
      context: elasticsearch/
      args:
        ELK_VERSION: $ELK_VERSION
    volumes:
      - type: bind
        source: ./elasticsearch/config/elasticsearch.yml
        target: /usr/share/elasticsearch/config/elasticsearch.yml
        read_only: true
      - type: volume
        source: elasticsearch
        target: /usr/share/elasticsearch/data
    ports:
      - "9200:9200"
      - "9300:9300"
    environment:
      ES_JAVA_OPTS: "-Xmx256m -Xms256m"
      ELASTIC_PASSWORD: changeme
    networks:
      - elk
    depends_on:
      - kafka

  logstash:
    build:
      context: logstash/
      args:
        ELK_VERSION: $ELK_VERSION
    volumes:
      - type: bind
        source: …