运行spring应用程序时出现以下错误。我需要一些帮助来解决这个问题。如果有人能告诉我如何调试和解决这个问题，我将不胜感激。我正在通过互联网并在我的pom.xml文件中进行不同的组合。
我的日志
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC Statement
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67) ~[hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlString(AbstractSchemaMigrator.java:525) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlStrings(AbstractSchemaMigrator.java:470) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.createTable(AbstractSchemaMigrator.java:273) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:71) ~[hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:203) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:110) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:183) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:72) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:309) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:452) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:889) [hibernate-core-5.2.10.Final.jar:5.2.10.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) [spring-orm-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:358) [spring-orm-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:384) [spring-orm-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:373) [spring-orm-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1776) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1712) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:499) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:858) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:122) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:386) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
at ca.naijaconnects.naijaconnectsproject.NaijaconnectsProjectApplication.main(NaijaconnectsProjectApplication.java:15) ~[classes/:na]
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'varchar2(40) not null, user_password varchar2(40) not null, primary key (user_na' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_131]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.8.0_131]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.8.0_131]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[na:1.8.0_131]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.Util.getInstance(Util.java:408) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2490) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2448) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.StatementImpl.executeInternal(StatementImpl.java:845) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:745) ~[mysql-connector-java-5.1.43.jar:5.1.43]
at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:92) ~[HikariCP-2.6.3.jar:na]
at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-2.6.3.jar:na]
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54) ~[hibernate-core-5.2.10.Final.jar:5.2.10.Final]
... 33 common frames omitted
[2m2017-09-10 02:50:18.820[0;39m [32m INFO[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mj.LocalContainerEntityManagerFactoryBean[0;39m [2m:[0;39m Initialized JPA EntityManagerFactory for persistence unit 'default'
[2m2017-09-10 02:50:18.920[0;39m [33m WARN[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mConfigServletWebServerApplicationContext[0;39m [2m:[0;39m Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'naijaConnectsController': Unsatisfied dependency expressed through field 'userLoginRepo'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'ca.naijaconnects.naijaconnectsproject.repo.UserLoginRepo' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
[2m2017-09-10 02:50:18.920[0;39m [32m INFO[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mj.LocalContainerEntityManagerFactoryBean[0;39m [2m:[0;39m Closing JPA EntityManagerFactory for persistence unit 'default'
[2m2017-09-10 02:50:18.920[0;39m [32m INFO[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mcom.zaxxer.hikari.HikariDataSource [0;39m [2m:[0;39m testdb - Shutdown initiated...
[2m2017-09-10 02:50:18.982[0;39m [32m INFO[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mcom.zaxxer.hikari.HikariDataSource [0;39m [2m:[0;39m testdb - Shutdown completed.
[2m2017-09-10 02:50:19.001[0;39m [32m INFO[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mo.apache.catalina.core.StandardService [0;39m [2m:[0;39m Stopping service [Tomcat]
[2m2017-09-10 02:50:19.044[0;39m [33m WARN[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mo.s.b.c.e.EventPublishingRunListener [0;39m [2m:[0;39m Error calling ApplicationEventListener
java.lang.ClassCastException: org.springframework.boot.context.event.ApplicationFailedEvent cannot be cast to org.springframework.boot.web.context.WebServerInitializedEvent
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:159) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
at org.springframework.boot.context.event.EventPublishingRunListener.finished(EventPublishingRunListener.java:114) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplicationRunListeners.callFinishedListener(SpringApplicationRunListeners.java:79) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplicationRunListeners.finished(SpringApplicationRunListeners.java:72) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:803) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
at ca.naijaconnects.naijaconnectsproject.NaijaconnectsProjectApplication.main(NaijaconnectsProjectApplication.java:15) [classes/:na]
[2m2017-09-10 02:50:19.065[0;39m [32m INFO[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mutoConfigurationReportLoggingInitializer[0;39m [2m:[0;39m
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
[2m2017-09-10 02:50:19.840[0;39m [31mERROR[0;39m [35m16904[0;39m [2m---[0;39m [2m[ main][0;39m [36mo.s.b.d.LoggingFailureAnalysisReporter [0;39m [2m:[0;39m
***************************
APPLICATION FAILED TO START
***************************
Description:
Field userLoginRepo in ca.naijaconnects.naijaconnectsproject.controller.NaijaConnectsController required a bean of type 'ca.naijaconnects.naijaconnectsproject.repo.UserLoginRepo' that could not be found.
Action:
Consider defining a bean of type 'ca.naijaconnects.naijaconnectsproject.repo.UserLoginRepo' in your configuration.
这是我的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>ca.naijaconnects</groupId>
<artifactId>naijaconnectsProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>naijaconnectsProject</name>
<description>none</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.M3</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.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</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.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>8.0.15</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.persistence/persistence-api -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-rest-core</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-validation -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-libs-release</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
这是我的运行应用程序： -
package ca.naijaconnects.naijaconnectsproject;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@SpringBootApplication
public class NaijaconnectsProjectApplication {
public static void main(String[] args) {
ApplicationContext factory = new AnnotationConfigApplicationContext();
SpringApplication.run(NaijaconnectsProjectApplication.class, args);
}
}
这是我的配置文件： -
package ca.naijaconnects.naijaconnectsproject.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import ca.naijaconnects.naijaconnectsproject.entity.UserLoginDetails;
@Configuration
@EnableJpaRepositories
public class ApplicationConfig
{
@Bean
public UserLoginDetails userLoginDetails()
{
return new UserLoginDetails();
}
}
这是我的控制器： -
package ca.naijaconnects.naijaconnectsproject.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import ca.naijaconnects.naijaconnectsproject.entity.UserLoginDetails;
import ca.naijaconnects.naijaconnectsproject.repo.UserLoginRepo;
@Controller
@RequestMapping(value="/testing")
public class NaijaConnectsController
{
@Autowired
UserLoginRepo userLoginRepo;
@SuppressWarnings("unchecked")
@RequestMapping(value = "/insertLogins", method = RequestMethod.POST)
public @ResponseBody List<UserLoginDetails> PostFormDataJSONArray() {
UserLoginDetails userLoginDetail = new UserLoginDetails();
userLoginDetail.setUserName("timisenco");
userLoginDetail.setUserPassword("Test@2017");
return (List<UserLoginDetails>) userLoginRepo.save(userLoginDetail);
}
}
这是我的实体： -
package ca.naijaconnects.naijaconnectsproject.entity;
import java.io.Serializable;
import javax.persistence.*;
import org.springframework.context.annotation.Bean;
@Entity
//@Table(name = "userlogindetails")
public class UserLoginDetails
{
@Id
@Column(name = "USER_NAME", nullable = false,columnDefinition="varchar2(40)")
private String userName;
@Column(name = "USER_Pawword", nullable = false,columnDefinition="varchar2(40)")
private String userPassword;
public UserLoginDetails()
{
}
@Bean
public String getUserName()
{
return userName;
}
@Bean
public void setUserName(String userName)
{
this.userName = userName;
}
@Bean
public String getUserPassword()
{
return userPassword;
}
@Bean
public void setUserPassword(String userPasword)
{
this.userPassword = userPassword;
}
}
这是回购： -
package ca.naijaconnects.naijaconnectsproject.repo;
import java.util.List;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.data.jpa.repository.*;
import org.springframework.stereotype.Repository;
import ca.naijaconnects.naijaconnectsproject.entity.UserLoginDetails;
@org.springframework.data.rest.core.annotation.RepositoryRestResource(exported=false)
public interface UserLoginRepo extends JpaRepository<UserLoginDetails, String>
{
//UserLoginDetails findOne(String);
@SuppressWarnings("unchecked")
UserLoginDetails save(UserLoginDetails account);
//UserLoginDetails findByEmailAddress(EmailAddress emailAddress);
}
我的应用程序属性： -
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost/naijaconnectsdb
spring.datasource.username=naijaConnects
spring.datasource.password=Connects@2017
spring.datasource.name=naijaconnectsdb
spring.jpa.hibernate.ddl-auto=update //fixed it after comments
spring.jpa.generate-ddl=true
spring.jpa.show-sql=true
spring.data.jpa.repositories.enabled=true
spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
答案 0 :(得分：0)
我可以看到很多错误。正如您所要求的建议调试方法，这就是它。
清理你的pom.xml。它很脏，很难理解。当您使用spring-boot和spring boot时，jpa现在删除以下依赖项。
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-rest-core</artifactId>
</dependency>
还添加了两次依赖项： -
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
删除它。
稍后，一旦应用程序运行，您可以根据需要使用这些依赖项。
我建议现在使用springboot的发布版本。因此，在父春季启动依赖项中将2.0.0.M3更改为2.0.0.M3。
修复您的application.properties文件，因为它有很多问题。以下是更新的： -
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/naijaconnectsdb
spring.datasource.username=naijaConnects
spring.datasource.password=Connects@2017
spring.jpa.hibernate.ddl-auto=update //fixed it after comments
spring.jpa.generate-ddl=true
spring.jpa.show-sql=true
spring.data.jpa.repositories.enabled=true
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
请尝试关注，然后查看您获得的异常，并尝试从那里进行故障排除。