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问题：

JPA实体未创建表

司徒阳曜
2023-03-14

所以我从JDBC转移到JPA，我从我的schema.sql文件中删除了“创建表”sql语句，所以现在这个文件看起来像这样：

INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED)
VALUES(1001, 'Max', 'Mad', 0547547547, sysdate());
INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED)
VALUES(1002, 'Boy', 'Johnny', 0547547547, sysdate());

我的实体，成员。课堂上，是这样的：

@Entity
public class Member   {


    @Id
    @GeneratedValue
    private int id;

    private String lastName;
    private String firstName;
    private int phoneNumber;
    private Date created;


    public Member(int id, String firstName, String lastName, int phoneNumber, Date created) {
        super();
        this.id = id;
        this.firstName = firstName;
        this.lastName = lastName;
        this.phoneNumber = phoneNumber;
        this.created = created;
    }

    public Member(String firstName, String lastName, int phoneNumber, Date created) {
        super();
        this.firstName = firstName;
        this.lastName = lastName;
        this.phoneNumber = phoneNumber;
        this.created = created;
    }


    public Member(){  

    }

    public long getId() {
        return id;
    }
    public void setId(int userId) {
        this.id = userId;
    }
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public long getPhoneNumber() {
        return phoneNumber;
    }
    public void setPhoneNumber(int phoneNumber) {
        this.phoneNumber = phoneNumber;
    }
    public Date getCreated() {
        return created;
    }
    public void setCreated(Date created) {
        this.created = created;
    }

    @Override
    public String toString() {
        return "Member [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + ", phoneNumber="
                + phoneNumber + ", created=" + created + "]";
    }


}

以下是我得到的例外：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'inMemoryDatabaseShutdownExecutor' defined in class path resource [org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.class]: Unsatisfied dependency expressed through method 'inMemoryDatabaseShutdownExecutor' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker': Invocation of init method failed; nested exception is org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement #1 of URL [file:/C:/Users/apodga/javaworkspace2/springbootdb/target/classes/schema.sql]: INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()); nested exception is org.h2.jdbc.JdbcSQLException: Table "MEMBER" not found; SQL statement:
INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()) [42102-196]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:458) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1249) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1098) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:304) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:858) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:122) ~[spring-boot-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:386) [spring-boot-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M5.jar:2.0.0.M5]
    at com.recweb.springbootdb.SpringbootdbApplication.main(SpringbootdbApplication.java:29) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.0.M5.jar:2.0.0.M5]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker': Invocation of init method failed; nested exception is org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement #1 of URL [file:/C:/Users/apodga/javaworkspace2/springbootdb/target/classes/schema.sql]: INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()); nested exception is org.h2.jdbc.JdbcSQLException: Table "MEMBER" not found; SQL statement:
INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()) [42102-196]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:591) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1133) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1060) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:809) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:715) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    ... 26 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker': Invocation of init method failed; nested exception is org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement #1 of URL [file:/C:/Users/apodga/javaworkspace2/springbootdb/target/classes/schema.sql]: INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()); nested exception is org.h2.jdbc.JdbcSQLException: Table "MEMBER" not found; SQL statement:
INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()) [42102-196]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1704) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:225) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveNamedBean(DefaultListableBeanFactory.java:1011) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:340) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:335) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerPostProcessor.postProcessAfterInitialization(DataSourceInitializerPostProcessor.java:57) ~[spring-boot-autoconfigure-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:438) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1708) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    ... 36 common frames omitted
Caused by: org.springframework.jdbc.datasource.init.ScriptStatementFailedException: Failed to execute SQL script statement #1 of URL [file:/C:/Users/apodga/javaworkspace2/springbootdb/target/classes/schema.sql]: INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()); nested exception is org.h2.jdbc.JdbcSQLException: Table "MEMBER" not found; SQL statement:
INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()) [42102-196]
    at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:492) ~[spring-jdbc-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.jdbc.datasource.init.ResourceDatabasePopulator.populate(ResourceDatabasePopulator.java:240) ~[spring-jdbc-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.jdbc.datasource.init.DatabasePopulatorUtils.execute(DatabasePopulatorUtils.java:48) ~[spring-jdbc-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer.runScripts(DataSourceInitializer.java:186) ~[spring-boot-autoconfigure-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer.createSchema(DataSourceInitializer.java:102) ~[spring-boot-autoconfigure-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerInvoker.afterPropertiesSet(DataSourceInitializerInvoker.java:64) ~[spring-boot-autoconfigure-2.0.0.M5.jar:2.0.0.M5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1763) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1700) ~[spring-beans-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    ... 49 common frames omitted
Caused by: org.h2.jdbc.JdbcSQLException: Table "MEMBER" not found; SQL statement:
INSERT INTO MEMBER (ID, LASTNAME, FIRSTNAME, PHONENUMBER, CREATED) VALUES(1001, 'Max', 'Mad', 0547547547, sysdate()) [42102-196]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:345) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.message.DbException.get(DbException.java:179) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.message.DbException.get(DbException.java:155) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.readTableOrView(Parser.java:5552) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.readTableOrView(Parser.java:5529) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.parseInsert(Parser.java:1062) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.parsePrepared(Parser.java:417) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.parse(Parser.java:321) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.parse(Parser.java:293) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.command.Parser.prepareCommand(Parser.java:258) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.engine.Session.prepareLocal(Session.java:578) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.engine.Session.prepareCommand(Session.java:519) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1204) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.jdbc.JdbcStatement.executeInternal(JdbcStatement.java:176) ~[h2-1.4.196.jar:1.4.196]
    at org.h2.jdbc.JdbcStatement.execute(JdbcStatement.java:164) ~[h2-1.4.196.jar:1.4.196]
    at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:95) ~[HikariCP-2.7.2.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-2.7.2.jar:na]
    at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:471) ~[spring-jdbc-5.0.0.RELEASE.jar:5.0.0.RELEASE]
    ... 56 common frames omitted

如您所见，它表示找不到表成员。如果我将“createtablemember”sql语句带回模式。sql文件，也不例外

我在Eclipse上使用Spring Boot。

谢谢！

共有3个答案

严嘉良
2023-03-14

其中一个原因可能是，如果实体类与主应用程序包位于完全不同的包中。

这可能会阻止您的实体被扫描。因为没有扫描的实体，所以不会向数据库中插入任何表，这意味着您甚至不会看到任何明显的异常或错误消息。那么，丢失的表可能会导致您粘贴到此处的异常。

如果是这种情况，您应该在主应用程序中使用@EntityScan注释。例如

@EntityScan("your.package.with.annotated.entities")
public class SomeClassInOtherPackage{
    // ...
}
萧卜霸
2023-03-14

对我来说，有效的方法是将这一行添加到应用程序中。属性：

spring.datasource.initialize=false
楚涵润
2023-03-14

> 

spring.jpa.hibernate.ddl-auto=create-drop

或

spring.jpa.hibernate.ddl-auto=create

从文件中：

创建drop

删除模式并在SessionFactory启动时重新创建它。此外，在SessionFactory关闭时删除模式。

创造

将生成数据库删除，然后创建数据库。

在使用hibernate之前，您可能会三思而后行。ddl auto正在生产中。

  • 重命名schema。sql到导入。sql或to数据。sql，因此spring boot将在创建数据库后初始化数据库（通过运行sql文件，使用数据）
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