无法让spring boot自动创建数据库架构
无法让spring boot自动创建数据库架构
提问于 2014-11-12 15:47:00
我无法让spring boot在启动时自动加载我的数据库模式。
这是我的application.properties：
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=test
spring.datasource.password=
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.jpa.database = MYSQL
spring.jpa.show-sql = true
spring.jpa.hibernate.ddl-auto = create
spring.jpa.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.naming_strategy = org.hibernate.cfg.ImprovedNamingStrategy这是我的Application.java：
@EnableAutoConfiguration
@ComponentScan
public class Application {
public static void main(final String[] args){
SpringApplication.run(Application.class, args);
}
}以下是一个示例实体：
@Entity
@Table(name = "survey")
public class Survey implements Serializable {
private Long _id;
private String _name;
private List<Question> _questions;
/**
* @return survey's id.
*/
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "survey_id", unique = true, nullable = false)
public Long getId() {
return _id;
}
/**
* @return the survey name.
*/
@Column(name = "name")
public String getName() {
return _name;
}
/**
* @return a list of survey questions.
*/
@OneToMany(mappedBy = "survey")
@OrderBy("id")
public List<Question> getQuestions() {
return _questions;
}
/**
* @param id the id to set to.
*/
public void setId(Long id) {
_id = id;
}
/**
* @param name the name for the question.
*/
public void setName(final String name) {
_name = name;
}
/**
* @param questions list of questions to set.
*/
public void setQuestions(List<Question> questions) {
_questions = questions;
}
}你知道我做错了什么吗？
回答 18
Stack Overflow用户
发布于 2017-03-11 09:00:57
@SpringBootApplication
@EnableConfigurationProperties
@EntityScan(basePackages = {"com.project.ppaa.model"}) // scan JPA entities
public class Application {
private static ConfigurableApplicationContext applicationContext;
public static void main(String[] args) {
Application.applicationContext = SpringApplication.run(Application.class, args);
}
}它应该会自动工作，但如果它不能工作，您可以输入基本包
@EntityScan(basePackages = {"com.project.ppaa.model"}) // scan JPA entities manuallyStack Overflow用户
发布于 2018-05-22 05:59:57
使用以下两个设置可以正常工作。
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=createStack Overflow用户
发布于 2018-09-15 16:07:23
您只需像这样添加createDatabaseIfNotExist=true
spring.datasource.url=jdbc:mysql://localhost:3306/test?createDatabaseIfNotExist=true&amp;useUnicode=true&amp;characterEncoding=utf-8&amp;autoReconnect=true添加到application.properties文件中
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原文链接：
https://stackoverflow.com/questions/26881739
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