【发布时间】:2017-01-17 13:05:45
【问题描述】:
我正在做一个spring-boot项目并尝试使用hibernate创建一个表,当我运行应用程序并且服务器正常启动时我没有收到任何错误,但是没有创建表。
StatusUpdate.java
package model;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.PrePersist;
@Entity
@Table(name="status_update")
public class StatusUpdate {
@Id
@Column(name="id")
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
@Column(name="text")
private String text;
@Column(name="added")
@Temporal(TemporalType.TIMESTAMP)
private Date added;
@PrePersist
protected void onCreate() {
if (added == null) {
added = new Date();
}
}
public StatusUpdate(String text) {
this.text = text;
}
public StatusUpdate(String text, Date added) {
this.text = text;
this.added = added;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Date getAdded() {
return added;
}
public void setAdded(Date added) {
this.added = added;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((added == null) ? 0 : added.hashCode());
result = prime * result + ((id == null) ? 0 : id.hashCode());
result = prime * result + ((text == null) ? 0 : text.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
StatusUpdate other = (StatusUpdate) obj;
if (added == null) {
if (other.added != null)
return false;
} else if (!added.equals(other.added))
return false;
if (id == null) {
if (other.id != null)
return false;
} else if (!id.equals(other.id))
return false;
if (text == null) {
if (other.text != null)
return false;
} else if (!text.equals(other.text))
return false;
return true;
}
}
pom.xml
<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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
<tiles.version>3.0.7</tiles.version>
</properties>
<groupId>com.voja</groupId>
<artifactId>spring-boot-tutorial</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-core</artifactId>
<version>${tiles.version}</version>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-jsp</artifactId>
<version>${tiles.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>1.3.5.RELEASE</version>
</dependency>
</dependencies>
<packaging>war</packaging>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
</configuration>
</plugin>
</plugins>
</build>
</project>
application.properties
debug=true
spring.datasource.url=jdbc:mysql://localhost:3306/springboottutorial
spring.datasource.username=springboot
spring.datasource.password=hello
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect
spring.jpa.generate-ddl=true
spring.jpa.show-sql=true
logging.level.org.hibernate.SQL=DEBUG
我在spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect这一行的dialect 下也看到了一条黄线,上面写着`spring.jpa.hibernate.dialect' 是一个未知属性。你的意思是“spring.jpa.hibernate.ddl-auto”,以防万一这可能是个问题。
【问题讨论】:
-
你的 persistence.xml 是什么样的?
-
正如@911DidBush 提到的,请显示您的persistence.xml。参数 hbm2ddl.auto 在这里很重要。
-
您可以将
spring.jpa.show-sql=true添加到您的application.properties以查看更多日志。也许你能找到一些东西 -
@911DidBush 我是 java 和 spring 的新手。那个文件在哪里?如果我应该创建一个,我没有创建一个,我正在学习一个教程,但没有完成。
-
我还将我的应用程序、属性文件添加到 Q 中。
标签: java eclipse hibernate spring-boot