我没有任何错误，但我无法生成数据库，这是我在控制台中的内容：
2015-05-14 16:23:23.655 INFO 4580 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {4.3.8.Final}
2015-05-14 16:23:23.663 INFO 4580 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2015-05-14 16:23:23.670 INFO 4580 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2015-05-14 16:23:24.218 INFO 4580 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2015-05-14 16:23:25.307 INFO 4580 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2015-05-14 16:23:25.466 INFO 4580 --- [ main] o.h.h.i.ast.ASTQueryTranslatorFactory : HHH000397: Using ASTQueryTranslatorFactory
2015-05-14 16:23:25.817 INFO 4580 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export
2015-05-14 16:23:25.825 INFO 4580 --- [ main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete
2015-05-14 16:23:26.508 INFO 4580 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@20d04b: startup date [Thu May 14 16:23:13 CEST 2015]; root of context hierarchy
2015-05-14 16:23:26.790 INFO 4580 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2015-05-14 16:23:26.791 INFO 4580 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],methods=[],params=[],headers=[],consumes=[],produces=[text/html],custom=[]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest)
2015-05-14 16:23:26.878 INFO 4580 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-05-14 16:23:26.878 INFO 4580 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-05-14 16:23:27.038 INFO 4580 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-05-14 16:23:27.617 INFO 4580 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2015-05-14 16:23:27.832 INFO 4580 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2015-05-14 16:23:27.837 INFO 4580 --- [ main] demo.DemoJpaTApplication : Started DemoJpaTApplication in 15.327 seconds (JVM running for 16.798)
这里是我的2个实体：数据库和实体（我有很多实体属于一个数据库）
package entities;
import java.io.Serializable;
import java.util.Collection;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
@Entity
public class Database implements Serializable {
private int id_database;
private String database_name;
@OneToMany
@JoinColumn(name="id_entity")
private Collection <Entities> entities;
public int getId_database() {
return id_database;
}
public void setId_database(int id_database) {
this.id_database = id_database;
}
public String getDatabase_name() {
return database_name;
}
public void setDatabase_name(String database_name) {
this.database_name = database_name;
}
public Database() {
super();
// TODO Auto-generated constructor stub
}
public Database(int id_database, String database_name) {
super();
this.id_database = id_database;
this.database_name = database_name;
}
@Override
public String toString() {
return "Database [id_database=" + id_database + ", database_name="
+ database_name + "]";
}
}
package entities;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
@Entity
public class Entities implements Serializable {
private int id_entity;
private String entity_name;
@ManyToOne
@JoinColumn(name="id_database")
private Database d;
public int getId_entity() {
return id_entity;
}
public void setId_entity(int id_entity) {
this.id_entity = id_entity;
}
public String getEntity_name() {
return entity_name;
}
public void setEntity_name(String entity_name) {
this.entity_name = entity_name;
}
}
这是我的application.properties，其中我提到了连接及其详细信息，驱动程序....，我正在关注spring boot的官方文档
# DataSourcesettings:
spring.datasource.url= jdbc:mysql://localhost:3306/db_hajar
spring.datasource.username= root
spring.datasource.password=
spring.datasource.driverClassName= com.mysql.jdbc.Driver
# Specifythe DBMS
spring.jpa.database = MYSQL
# Show or not log for each sqlquery
spring.jpa.show-sql = true
# Hibernateddlauto (create, create-drop, update)
spring.jpa.hibernate.ddl-auto =update
# Namingstrategy
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
# ViewResolver
spring.view.prefix: /WEB-INF/views/
spring.view.suffix: .jsp
答案 0 :(得分：0)
您是否尝试将ddl-auto属性设置为create或create-drop？
spring.jpa.hibernate.ddl-auto = create