Spring Boot + Hibernate + Postgres - 不创建表格 [英] Spring Boot + Hibernate + Postgres - not creating tables
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问题描述
我试图根据实体生成模式表。应用程序正确启动，SQL生成但没有结果 - 没有创建表。怎么了？我在普通的Spring MVC + Hibernate JPA中使用了相同的设置，没有使用Spring Boot，并且一切正常。
这是我的pom.xml：
<？xml version =1.0encoding =UTF-8？>
< project xmlns =http://maven.apache.org/POM/4.0.0xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
xsi：schemaLocation =http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\">
< modelVersion> 4.0.0< / modelVersion>
< groupId> com.agileplayers< / groupId>
< artifactId> applicationname< / artifactId>
< version> 0.0.1-SNAPSHOT< / version>
<包装> jar< / packaging>
< name> ApplicationName< / name>
< description>应用程序名称< / description>
< parent>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-starter-parent< / artifactId>
< version> 1.3.5.RELEASE< / version>
< relativePath /> <！ - 从存储库查找父级 - >
< / parent>
<属性>
< project.build.sourceEncoding> UTF-8< /project.build.sourceEncoding>
< java.version> 1.8< /java.version>
< / properties>
<依赖关系>
< dependency>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-starter-actuator< / artifactId>
< /依赖关系>
< dependency>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-starter-data-jpa< / artifactId>
< /依赖关系>
< dependency>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-starter-security< / artifactId>
< /依赖关系>
< dependency>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-starter-web< / artifactId>
< /依赖关系>
< dependency>
< groupId> org.postgresql< / groupId>
< artifactId> postgresql< / artifactId>
<！ - < scope>运行时< / scope> - >
< version> 9.4-1201-jdbc41< / version>
< /依赖关系>
< dependency>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-starter-test< / artifactId>
< scope> test< / scope>
< /依赖关系>
< /依赖关系>
< build>
< plugins>
< plugin>
< groupId> org.springframework.boot< / groupId>
< artifactId> spring-boot-maven-plugin< / artifactId>
< / plugin>
< / plugins>
< / build>
< / project>
application.properties：
spring.datasource.url = jdbc：postgresql：// localhost：5432 / postgres
spring.datasource.driverClassName = org.postgresql.Driver
spring.jpa.properties.hibernate .dialect = org.hibernate.dialect.PostgreSQL82Dialect
spring.datasource.schema = schemaName
spring.datasource.username = userName
spring.datasource.password = userPassword
spring.jpa.hibernate.ddl-auto =创建
spring.jpa.show-sql = true
spring.jpa.generate-ddl = true
BaseEntity.java：
package com.agileplayers。 applicationname.core.domain;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import java.util.Date;
@MappedSuperclass
public class BaseEntity {
@Id
@GeneratedValue
private int id;
私人日期createdOn;
public String description;
$ b $ public BaseEntity（）{
}
public int getId（）{
return id;
}
public void setId（int id）{
this.id = id;
}
public Date getCreatedOn（）{
return createdOn;
}
public void setCreatedOn（Date createdOn）{
this.createdOn = createdOn;
}
public String getDescription（）{
return description;
}
public void setDescription（String description）{
this.description = description;
$ b 扩展BaseEntity的实体示例 - Entry.java：
package com.agileplayers.applicationname.core.domain;
import javax.persistence.Entity;
import javax.persistence.ManyToOne;
import java.util.Date;
@Entity
公共类条目扩展BaseEntity {
私有字符串类型;
@ManyToOne
私人账户;
$ b public public Entry（）{
}
public String getType（）{
return type;
}
public void setType（String type）{
this.type = type;
}
public Account getAccount（）{
return account;
}
public void setAccount（Account account）{
this.account = account;
}
}
解决方案 I已经解决了这个问题。而不是 spring.datasource.schema = schemaName 应该有 spring.jpa.properties.hibernate.default_schema = schemaName 。
生成表格所需的一系列必要属性如下：
spring.datasource.url = jdbc：postgresql：// localhost：5432 / postgres
spring.jpa.properties.hibernate.default_schema = schemaName
spring.datasource.username = userName
spring.datasource.password = userPassword
spring.jpa.hibernate.ddl-auto = create-drop
spring.jpa.show-sql = true
I am trying to generate schema tables based on entities. The application starts correctly, the SQL is generated but there is no result - none of tables are created. What's wrong? I have used the same settings in plain Spring MVC + Hibernate JPA without Spring Boot and everything was working correctly.
Here is my 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.agileplayers</groupId>
<artifactId>applicationname</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>ApplicationName</name>
<description>Application Name</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<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.postgresql</groupId>
<artifactId>postgresql</artifactId>
<!--<scope>runtime</scope>-->
<version>9.4-1201-jdbc41</version>
</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>
</plugin>
</plugins>
</build>
</project>
application.properties:
spring.datasource.url = jdbc:postgresql://localhost:5432/postgres
spring.datasource.driverClassName = org.postgresql.Driver
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQL82Dialect
spring.datasource.schema=schemaName
spring.datasource.username=userName
spring.datasource.password=userPassword
spring.jpa.hibernate.ddl-auto=create
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
BaseEntity.java:
package com.agileplayers.applicationname.core.domain;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import java.util.Date;
@MappedSuperclass
public class BaseEntity {
@Id
@GeneratedValue
private int id;
private Date createdOn;
public String description;
public BaseEntity() {
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Date getCreatedOn() {
return createdOn;
}
public void setCreatedOn(Date createdOn) {
this.createdOn = createdOn;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
example of Entity which extends BaseEntity - Entry.java:
package com.agileplayers.applicationname.core.domain;
import javax.persistence.Entity;
import javax.persistence.ManyToOne;
import java.util.Date;
@Entity
public class Entry extends BaseEntity{
private String type;
@ManyToOne
private Account account;
public Entry() {
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public Account getAccount() {
return account;
}
public void setAccount(Account account) {
this.account = account;
}
}
解决方案 I have fixed the issue. Instead of spring.datasource.schema=schemaName there should be spring.jpa.properties.hibernate.default_schema=schemaName.
The set of necessary properties required for generating tables in my case is the following:
spring.datasource.url = jdbc:postgresql://localhost:5432/postgres
spring.jpa.properties.hibernate.default_schema = schemaName
spring.datasource.username = userName
spring.datasource.password = userPassword
spring.jpa.hibernate.ddl-auto = create-drop
spring.jpa.show-sql = true
这篇关于Spring Boot + Hibernate + Postgres - 不创建表格的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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