表未使用 Springboot 应用程序创建到 MySQL 数据库中

Question

我正在为在线商店创建一个新的后端 API，我已经为商品、购物车、用户等创建了实体类。但是，当我运行应用程序时，表不会在数据库中创建。

我在日志中也没有收到任何错误，所以这让我有点困惑，无法理解可能出现的问题。

下面是用户类和application.properties

package com.onlineDairyShop.entities;

import jakarta.persistence.CascadeType;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.JoinColumn;
import jakarta.persistence.OneToOne;
import jakarta.persistence.Table;

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

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    
    private String name;
    
    private int age;
    
    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "address_id", referencedColumnName = "id")
    private Address address;
    
    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = "cart_id", referencedColumnName = "id")
    private Cart cart;

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

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

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

    public Cart getCart() {
        return cart;
    }

    public void setId(Cart cart) {
        this.cart = cart;
    }
    
    @Override
    public String toString() {
        return "User [id=" + id + ", name=" + name + ", age=" + age + ", address=" + address + "]";
    }
    
}

这是应用程序属性

server.port=8183

#db configuration
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/OnlineShop
spring.datasource.username=root
spring.datasource.password=franklampard08@


# hibernate configuration and JPA configuration

spring.jpa.hibernate.ddl-auto=update
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQLDialect
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.open-in-view=true

这是pom.xml

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.onlineDairyShop</groupId>
    <artifactId>onlineDairyShop</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>onlineDairyShop</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </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>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

这是相同的日志

2024-04-23T00:22:00.380+05:30  INFO 1688 --- [           main] c.o.o.OnlineDairyShopApplication         : No active profile set, falling back to 1 default profile: "default"
2024-04-23T00:22:00.786+05:30  INFO 1688 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2024-04-23T00:22:00.800+05:30  INFO 1688 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 8 ms. Found 0 JPA repository interfaces.
2024-04-23T00:22:01.082+05:30  INFO 1688 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port 8181 (http)
2024-04-23T00:22:01.089+05:30  INFO 1688 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2024-04-23T00:22:01.089+05:30  INFO 1688 --- [           main] o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/10.1.20]
2024-04-23T00:22:01.126+05:30  INFO 1688 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2024-04-23T00:22:01.127+05:30  INFO 1688 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 705 ms
2024-04-23T00:22:01.216+05:30  INFO 1688 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2024-04-23T00:22:01.254+05:30  INFO 1688 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 6.4.4.Final
2024-04-23T00:22:01.274+05:30  INFO 1688 --- [           main] o.h.c.internal.RegionFactoryInitiator    : HHH000026: Second-level cache disabled
2024-04-23T00:22:01.365+05:30  INFO 1688 --- [           main] o.s.o.j.p.SpringPersistenceUnitInfo      : No LoadTimeWeaver setup: ignoring JPA class transformer
2024-04-23T00:22:01.376+05:30  INFO 1688 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2024-04-23T00:22:01.566+05:30  INFO 1688 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection com.mysql.cj.jdbc.ConnectionImpl@f18b738
2024-04-23T00:22:01.567+05:30  INFO 1688 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2024-04-23T00:22:01.606+05:30  WARN 1688 --- [           main] org.hibernate.orm.deprecation            : HHH90000025: MySQLDialect does not need to be specified explicitly using 'hibernate.dialect' (remove the property setting and it will be selected by default)
2024-04-23T00:22:01.742+05:30  INFO 1688 --- [           main] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000489: No JTA platform available (set 'hibernate.transaction.jta.platform' to enable JTA platform integration)
2024-04-23T00:22:01.747+05:30  INFO 1688 --- [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2024-04-23T00:22:02.043+05:30  INFO 1688 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port 8181 (http) with context path ''
2024-04-23T00:22:02.049+05:30  INFO 1688 --- [           main] c.o.o.OnlineDairyShopApplication         : Started OnlineDairyShopApplication in 1.923 seconds (process running for 2.428)

请帮忙并提前致谢。

我尝试在谷歌中搜索这个问题的答案，询问同事并关注了一些stackoverflow问题，但是它没有得到解决

Answer 1

您是否尝试过将 ddl-auto 更改为第一次运行时的“创建”？

spring.jpa.hibernate.ddl-auto=创建