mysql - jdbc4.MySQLSyntaxErrorException : Unknown database

Question

我正在尝试将我的项目连接到 MySQL，但我不断收到一个我不熟悉的错误，并且一切似乎都是正确的，这是 spring boot 多模块化项目 我的主类 - 模块 admin-rest

@EntityScan(basePackages = {"com.valentine.domain"})
@SpringBootApplication(scanBasePackages = {"com.valentine.adminportal", "com.valentine.service", "com.valentine.utility"})
@EnableJpaRepositories("com.valentine.repository")
@EnableTransactionManagement
@EnableAspectJAutoProxy(proxyTargetClass = true)
public class AdminPortalApplication {

    public static void main(String[] args) {
        SpringApplication.run(AdminPortalApplication.class, args);
    }

应用程序属性

spring.jpa.hibernate.format_sql=true

spring.datasource.url=jdbc:mysql://localhost:3306/bookstoredb
spring.datasource.username=root
spring.datasource.password=user
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

spring.datasource.platform=mysql

spring.datasource.testWhileIdle=true
spring.datasource.validationQuery=SELECT 1


spring.jpa.properties.hbm2ddl=update

spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

spring.jpa.properties.hibernate.hbm2ddl.auto=update

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

我的域模型位于另一个名为域的模块中，您可以从主类中的实体扫描中看到

我的pom文件

 <?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <groupId>com.valentine</groupId>
        <artifactId>onlinestore</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.valentine.onlinestore</groupId>
    <artifactId>admin-rest</artifactId>

    <dependencies>

        <dependency>
            <groupId>com.valentine.onlinestore</groupId>
            <artifactId>service-api</artifactId>
        </dependency>

        <dependency>
            <groupId>com.valentine.onlinestore</groupId>
            <artifactId>service</artifactId>
        </dependency>

        <dependency>
            <groupId>com.valentine.onlinestore</groupId>
            <artifactId>utility</artifactId>
        </dependency>

        <dependency>
            <groupId>com.valentine.onlinestore</groupId>
            <artifactId>domain</artifactId>
        </dependency>

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>

        <dependency>
            <groupId>net.sf.dozer</groupId>
            <artifactId>dozer-spring</artifactId>
        </dependency>

        <dependency>
            <groupId>net.sf.dozer</groupId>
            <artifactId>dozer</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</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-starter-web</artifactId>
        </dependency>

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

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

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <!-- this is added to check weather user logged in or not-->

        <dependency>
            <groupId>org.easymock</groupId>
            <artifactId>easymock</artifactId>
        </dependency>

        <!--for checking -->
        <dependency>
            <groupId>net.sourceforge.htmlunit</groupId>
            <artifactId>htmlunit</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>

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

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-commons</artifactId>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.1.7.Final</version>
        </dependency>

        <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>4.1.7.Final</version>
        </dependency>

    </dependencies>

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


</project>

错误和异常

Thu Jan 18 02:28:05 MSK 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
02:28:05.850 [main] ERROR o.a.tomcat.jdbc.pool.ConnectionPool - Unable to create initial connections of pool.
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'bookstoredb'
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
    at com.mysql.jdbc.Util.getInstance(Util.java:408)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:873)
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1710)
        at com.valentine.adminportal.AdminPortalApplication.main(AdminPortalApplication.java:18)
02:28:05.866 [main] WARN  o.s.b.a.orm.jpa.DatabaseLookup - Unable to determine jdbc url from datasource
org.springframework.jdbc.support.MetaDataAccessException: Could not get Connection for extracting meta data; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'bookstoredb'
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:339)
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:366)
    at org.springframework.boot.autoconfigure.orm.jpa.DatabaseLookup.getDatabase(DatabaseLookup.java:72)
    at com.valentine.adminportal.AdminPortalApplication.main(AdminPortalApplication.java:18)
Caused by: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'bookstoredb'
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
    at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:326)
    ... 61 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'bookstoredb'
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
    at com.mysql.jdbc.Util.getInstance(Util.java:408)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:873)
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1710)

我基本上拥有在 MySQL 中建立连接和创建表所需的一切，但无济于事，请提供任何帮助，我们将不胜感激

Answer 1

基于这一行:

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:未知数据库“bookstoredb”

您的数据库名称似乎不正确。你已经仔细检查过了吗？您是如何创建数据库的？您可能还想检查 XAMPP 或您使用的任何本地服务器上 mysql 的配置。