我正在尝试创建一个宁静的应用程序通过以下你管视频，因为我是完全新的这一点。我无法创建表自动使用hibernate.ddl-auto = update。我也尝试使用hibernate.ddl-auto = create和spring.jpa.hibernate.hbm2ddl.auto = create。我也必须改变服务器端口每一次运行应用程序。如何解决这些问题？
RestfulApplication1.java

package com.springboot.first.app;

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

数据源自动配置;

@SpringBootApplication
@EnableAutoConfiguration(exclude= 
{DataSourceAutoConfiguration.class})
public class RestfulApplication1 {

public static void main(String[] args) {
    SpringApplication.run(RestfulApplication1Application.class, args);
    }
}

application.properties

spring.datasource.username=root
spring.datasource.password=**********

spring.datasource.url=jdbc:mysql://localhost:3306/emp?useSSL=false

jpa.属性。休眠方言= org.hibernate.dialect.MySQL5无源数据库方言

spring.datasource.driver.class-name=com.mysql.jdbc.Driver
 spring.jpa.show-sql=true
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.generate-ddl=true

server.port = 6104

Employee.java

package com.springboot.first.app.model;

import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
import lombok.Data;

@Data
@Entity
@Table(name="Employee")

public class Employee {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    
    private long id;
    @Column(name = "first_name" , nullable = false)
     private String firstName;
    
    @Column(name = "last_name")
     private String lastName;
    
    @Column(name="email")
     private String email;
}

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