Spring Boot2 JPA 不会自动创建表的问题的各种解决方法

请你确认以下条款是否都做到了

方法一: JPA 实体类必须有 @Entity 注解

package com.haoshuashua.demo.jpa.entity;

import lombok.Data;
import lombok.NoArgsConstructor;
import javax.persistence.*;
import java.math.BigDecimal;

@Data
@Entity  // 这个注解很重要
@Table(name="t_assets")
@NoArgsConstructor
public class Asset {

    @Id    //主键id
    @GeneratedValue(strategy= GenerationType.IDENTITY)//主键生成策略
    @Column(name="id")//数据库字段名
    private long id;

    // 用户编号
    @Column(name="user_id")
    private long userId;
}

方法二： Application 需要加上 @EnableAutoConfiguration 注解

package com.haoshuashua.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@EnableAutoConfiguration  // 这个注解很重要
@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

方法三: application.yml 里必须有 `generate-ddl: true`

spring:
  aop:
    auto: true
  profiles:
    active: ${SPRING_ENV:prd}

  servlet:
    multipart:
      enabled: true
      max-file-size: 100MB
      max-request-size: 120MB
  jpa:
    generate-ddl: true
    hibernate:
      hbm2ddl.auto: update
  show-sql: false

  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    sql-script-encoding: UTF-8
    druid:
      initial-size: 64
      max-active: 128
      min-idle: 10
      max-wait: 30000
      pool-prepared-statements: false
      test-on-borrow: false
      test-on-return: true
      test-while-idle: true
      time-between-eviction-runs-millis: 60000
      min-evictable-idle-time-millis: 30000
      max-evictable-idle-time-millis: 60000
      filters: stat,slf4j
      web-stat-filter:
        enabled: true
        url-pattern: "/*"
        exclusions: "*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*,/static/*"
      stat-view-servlet:
        url-pattern: "/druid/*"
        login-username: admin
        login-password: 123123
        enabled: true
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
    default-property-inclusion: NON_NULL
  application:
    name: member-system

Spring Boot2 JPA 不会自动创建表的问题的各种解决方法

方法一: JPA 实体类必须有 @Entity 注解

方法二： Application 需要加上 @EnableAutoConfiguration 注解

方法三: application.yml 里必须有 generate-ddl: true

方法三: application.yml 里必须有 `generate-ddl: true`