Java Spring Hibernate不是基于我的实体创建表

Question

我想在春天做一个项目。我想使用Hibernate来生成我的表。不幸的是，由于某些我似乎找不到的原因，Hibernate没有创建我的表。我想让它根据我的实体创建我的表。

这里是我的实体:

@Entity
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class Book {
@Id
private Long id;
@Column(name = "title")
private String title;
@Column(name = "author")
private String author;
@Column(name = "description")
private String description;
@Column(name = "release_year")
private Integer releaseYear;
@Column(name = "rentalRate")
private Integer rentalRate;
@Column(name = "pages")
private Integer pages;
@Column(name = "replacement_cost")
private Float replacementCost;
@Column(name = "rating")
private Float rating;
@ManyToOne
@JoinColumn(name="languageId", nullable=false)
private Language language;
}

:

@Entity
@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
@Table(name="Language")
public class Language {
@Id
private Long languageId;
@Column(name = "name")
private String name;
@Column(name = "last_updated")
private String lastUpdated;
@OneToMany(mappedBy = "language")
private Set<Book> books;
}

还有，这是我的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 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>2.5.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>ro.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</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-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<!--Hibernate-->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.27.Final</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.11</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>

<dependency>
<groupId>org.flywaydb</groupId>
<artifactId>flyway-core</artifactId>
<version>7.12.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

和我的应用程序属性:

server.port=8080
spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
spring.datasource.username=practice_user
spring.datasource.password=practice_user
spring.datasource.driver-class-name=org.postgresql.Driver
spring.jpa.show-sql=true
spring.flyway.enabled=false
spring.jpa.hibernate.ddl-auto=update
spring.security.user.name=admin
spring.security.user.password=admin
spring.jpa.generate-ddl=true
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect

我已经尝试过的事情:

• 改变spring.jpa.hibernate.ddl-auto=create
• 改变spring.jpa.database-platform=Postgres

Answer 1

以下应用。Yml文件工作:

spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
spring.datasource.username=practice_user
spring.datasource.password=practice_user
spring.datasource.hikari.schema=public
spring.jpa.generate-ddl = true

你可以替换模式名，如果它不是默认设置为public。

同时，将@Table(name = "BOOK")注释添加到您的图书实体