休眠不创建表但没有错误消息

Question

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，但是没有创建该表。

状态更新程序

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>

应用程序属性

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

我也得下黄线dialect在这条线上spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect它说'spring.jpa.hibernate.dialect”是未知属性。你的意思是“spring.jpa.hibernate.ddl-auto”以防万一这可能是一个问题。

Answer 1

通过阅读另一篇文章发现了问题，实际上其中的包和类存在问题，他们无法找到彼此，因此未创建表。

我创建了一个新项目并将所有类放在同一个包中并且它有效，所以我将基于此修复我现有的项目。