Question

我正在使用spring-boot和postgreSQL开发基本的Restful服务。我尝试使用JPA创建表，这是application.properties文件

# Disable feature detection by this undocumented parameter. Check the org.hibernate.engine.jdbc.internal.JdbcServiceImpl.configure method for more details.
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults = false

#Default port set
#PostrgreSQL connection
spring.datasource.url=jdbc:postgresql://localhost:5432/mydb
spring.datasource.username=myuser
spring.datasource.password=123456789

spring.jpa.generate-ddl=true
spring.jpa.show-sql = true
#create/create-drop/update/
spring.jpa.hibernate.ddl-auto = create
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQLDialect
spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.EJB3NamingStrategy

这是实体

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name = "User", schema = "public")
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "ID")
    private Long id;

    @Column(name = "USERNAME")
    String userName;

    @Column(name = "USERSURNAME")
    String userSurName;

    @Column(name = "USERJOB")
    String userJob;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserSurName() {
        return userSurName;
    }

    public void setUserSurName(String userSurName) {
        this.userSurName = userSurName;
    }

    public String getUserJob() {
        return userJob;
    }

    public void setUserJob(String userJob) {
        this.userJob = userJob;
    }
}

当我运行应用程序时，我期望必须创建User表。但是没有表或架构。我找不到任何错误。

这是日志。

2018-07-25 11:31:11.139  INFO 10264 --- [  restartedMain] com.app.service.DemoApplication        : Starting DemoApplication on S00 with PID 10264 (D:\JAVA\WEBZEROWORKSPACE\webzeroproject\target\classes started by s00 in D:\JAVA\WEBZEROWORKSPACE\webzeroproject)
2018-07-25 11:31:11.140  INFO 10264 --- [  restartedMain] com.app.service.DemoApplication        : No active profile set, falling back to default profiles: default
2018-07-25 11:31:11.144  INFO 10264 --- [  restartedMain] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@477d52e0: startup date [Wed Jul 25 11:31:11 EET 2018]; root of context hierarchy
2018-07-25 11:31:11.413  INFO 10264 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$8dd8984d] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2018-07-25 11:31:11.491  INFO 10264 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2018-07-25 11:31:11.491  INFO 10264 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2018-07-25 11:31:11.491  INFO 10264 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-07-25 11:31:11.517  INFO 10264 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2018-07-25 11:31:11.518  INFO 10264 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 374 ms
2018-07-25 11:31:11.542  INFO 10264 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Servlet dispatcherServlet mapped to [/]
2018-07-25 11:31:11.542  INFO 10264 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-07-25 11:31:11.542  INFO 10264 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-07-25 11:31:11.542  INFO 10264 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-07-25 11:31:11.542  INFO 10264 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2018-07-25 11:31:11.576  INFO 10264 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-2 - Starting...
2018-07-25 11:31:11.618  INFO 10264 --- [  restartedMain] com.zaxxer.hikari.HikariDataSource       : HikariPool-2 - Start completed.
2018-07-25 11:31:11.618  INFO 10264 --- [  restartedMain] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2018-07-25 11:31:11.618  INFO 10264 --- [  restartedMain] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [
    name: default
    ...]
2018-07-25 11:31:11.618  INFO 10264 --- [  restartedMain] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
2018-07-25 11:31:11.618  INFO 10264 --- [  restartedMain] o.h.e.j.e.i.LobCreatorBuilderImpl        : HHH000422: Disabling contextual LOB creation as connection was null
2018-07-25 11:31:11.618  INFO 10264 --- [  restartedMain] org.hibernate.type.BasicTypeRegistry     : HHH000270: Type registration [java.util.UUID] overrides previous : org.hibernate.type.UUIDBinaryType@1cb89f80
2018-07-25 11:31:11.680  INFO 10264 --- [  restartedMain] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2018-07-25 11:31:11.700  INFO 10264 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 11:31:11.762  INFO 10264 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@477d52e0: startup date [Wed Jul 25 11:31:11 EET 2018]; root of context hierarchy
2018-07-25 11:31:11.784  WARN 10264 --- [  restartedMain] aWebConfiguration$JpaWebMvcConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2018-07-25 11:31:11.785  INFO 10264 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/{user}],methods=[DELETE]}" onto public void com.sihab.service.CommonRestController.deleteUser(java.lang.Long)
2018-07-25 11:31:11.785  INFO 10264 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/{user}],methods=[GET]}" onto public com.sihab.model.User com.sihab.service.CommonRestController.getUser(java.lang.Long)
2018-07-25 11:31:11.785  INFO 10264 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-07-25 11:31:11.785  INFO 10264 --- [  restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-07-25 11:31:11.801  INFO 10264 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 11:31:11.801  INFO 10264 --- [  restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-07-25 11:31:11.840  WARN 10264 --- [  restartedMain] ion$DefaultTemplateResolverConfiguration : Cannot find template location: classpath:/templates/ (please add some templates or check your Thymeleaf configuration)
2018-07-25 11:31:11.918  INFO 10264 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
2018-07-25 11:31:11.951  INFO 10264 --- [  restartedMain] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-07-25 11:31:11.952  INFO 10264 --- [  restartedMain] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'dataSource' has been autodetected for JMX exposure
2018-07-25 11:31:11.958  INFO 10264 --- [  restartedMain] o.s.j.e.a.AnnotationMBeanExporter        : Located MBean 'dataSource': registering with JMX server as MBean [com.zaxxer.hikari:name=dataSource,type=HikariDataSource]
2018-07-25 11:31:11.971  INFO 10264 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2018-07-25 11:31:11.972  INFO 10264 --- [  restartedMain] com.sihab.service.DemoApplication        : Started DemoApplication in 0.856 seconds (JVM running for 1978.331)
2018-07-25 11:31:11.979  INFO 10264 --- [  restartedMain] .ConditionEvaluationDeltaLoggingListener : Condition evaluation unchanged

编辑：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.test</groupId>
    <artifactId>webzero</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <description>web project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


    <name>webtest</name>
</project>

Answer 1

我试图重现相同的问题，但是不能，这是我的步骤：

转到https://start.spring.io并使用JPA创建一个演示项目，
带有Spring Boot 1.5.14版本的Postgres依赖关系。
将用户类添加到与@SpringBootApplication相同的包中上课了。
使用相同的属性更新了Application.properties（更新的数据库详细信息）。

以下是休眠特定的日志：

org.hibernate.tool.hbm2ddl.SchemaExport：HHH000227：运行hbm2ddl   模式导出

休眠：如果存在public.user级联，则删除表

Hibernate：删除序列hibernate_sequence

休眠：创建表public.user（id int8不为null，userjob   varchar（255），用户名varchar（255），用户姓氏varchar（255），   主键（id））

休眠：创建序列hibernate_sequence从1开始递增1

我的Pom.xml是

<?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.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.14.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

如果按照上述说明仍然遇到问题，则可以发布pom.xml。

如果您要将实体类放置在与SpringBoot应用程序放置位置不同的包中，则可以通过使用

注释SpringBootApplication来提供实体路径，从而使用做到这一点

@EntityScan( basePackages = {"package-name"} )

更多信息，https://dzone.com/articles/spring-boot-entity-scan

为什么休眠不创建表和架构

1 个答案: