那些遇到过的问题

Spring Boot - 无法确定数据库类型为NONE的嵌入式数据库驱动程序类

xyb*_*rek 202 java google-app-engine jpa spring-data spring-boot

这是尝试运行我的Web应用程序时引发的错误:

[INFO] WARNING: Nested in org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceAutoConfiguration$NonEmbeddedConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.sql.DataSource org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$NonEmbeddedConfiguration.dataSource()] threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath.:
    [INFO] org.springframework.beans.factory.BeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath.
    [INFO]  at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.getDriverClassName(DataSourceProperties.java:91)
    [INFO]  at org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$NonEmbeddedConfiguration.dataSource(DataSourceAutoConfiguration.java:100)
    [INFO]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    [INFO]  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    [INFO]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    [INFO]  at java.lang.reflect.Method.invoke(Method.java:606)
    [INFO]  at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
    [INFO]  at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
    [INFO]  at org.springframework.beans.factory.support.ConstructorResolver$3.run(ConstructorResolver.java:580)
    [INFO]  at java.security.AccessController.doPrivileged(Native Method)
    [INFO]  at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:577)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1094)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:989)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    [INFO]  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    [INFO]  at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1017)
    [INFO]  at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960)
    [INFO]  at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
    [INFO]  at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
    [INFO]  at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
    [INFO]  at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    [INFO]  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    [INFO]  at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:370)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1094)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:989)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    [INFO]  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
    [INFO]  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
    [INFO]  at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    [INFO]  at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:973)
    [INFO]  at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:750)
    [INFO]  at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    [INFO]  at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:683)
    [INFO]  at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
    [INFO]  at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:142)
    [INFO]  at org.springframework.boot.legacy.context.web.SpringBootContextLoaderListener.initWebApplicationContext(SpringBootContextLoaderListener.java:60)
    [INFO]  at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
    [INFO]  at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
    [INFO]  at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
    [INFO]  at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
    [INFO]  at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
    [INFO]  at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
    [INFO]  at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    [INFO]  at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
    [INFO]  at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    [INFO]  at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
    [INFO]  at org.mortbay.jetty.Server.doStart(Server.java:224)
    [INFO]  at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    [INFO]  at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:249)
    [INFO]  at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:306)
    [INFO]  at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:26)
    [INFO]  at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:79)
    [INFO]  at com.google.appengine.tools.development.Modules.startup(Modules.java:88)
    [INFO]  at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:254)
    [INFO]  at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:47)
    [INFO]  at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:212)
    [INFO]  at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:210)
    [INFO]  at java.security.AccessController.doPrivileged(Native Method)
    [INFO]  at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:210)
    [INFO]  at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:277)
    [INFO]  at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
    [INFO]  at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:219)
    [INFO]  at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:210)
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我相信我有正确的组合datanucleus-appengine和datanucleus罐子:

2.1:需要DataNucleus 3.1.x(core,api-jdo,api-jpa,enhancer).需要SDK 1.6.4+请注意,DataNucleus项目不再支持此版本的Datanucleus

JPA App配置:

@Configuration
@EnableJpaRepositories("demo.core.entity")
@EnableTransactionManagement
class JpaApplicationConfig {
    private static final Logger logger = Logger
            .getLogger(JpaApplicationConfig.class.getName());
    @Bean
    public AbstractEntityManagerFactoryBean entityManagerFactory() {
        logger.info("Loading Entity Manager...");
        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
        factory.setPersistenceUnitName("transactions-optional");
        return factory;
    }
    @Bean
    public PlatformTransactionManager transactionManager() {
        logger.info("Loading Transaction Manager...");
        JpaTransactionManager txManager = new JpaTransactionManager();
        txManager.setEntityManagerFactory(entityManagerFactory().getObject());
        return txManager;
    }
    @Bean
    public PersistenceExceptionTranslator persistenceExceptionTranslator() {
        return new OpenJpaDialect();
    }
}
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Application.java

@Configuration
@ComponentScan
@EnableAutoConfiguration
@RestController
public class Application {

    private static final EntityManagerFactory INSTANCE =
            Persistence.createEntityManagerFactory("transactions-optional");

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

    @RequestMapping("/")
    public String home() {
        return "Hello World";
    }

}
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POM:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="...">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.demohq</groupId>
    <artifactId>demo-boot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>demo-boot</name>
    <description>Demo project</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.1.0.BUILD-SNAPSHOT</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-legacy</artifactId>
            <version>1.1.0.BUILD-SNAPSHOT</version>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>net.kindleit</groupId>-->
            <!--<artifactId>gae-runtime</artifactId>-->
            <!--<version>${gae.version}</version>-->
            <!--<type>pom</type>-->
            <!--<scope>provided</scope>-->
        <!--</dependency>-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>org.hsqldb</groupId>-->
            <!--<artifactId>hsqldb</artifactId>-->
            <!--<scope>runtime</scope>-->
        <!--</dependency>-->
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-labs</artifactId>
            <version>${gae.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-api-stubs</artifactId>
            <version>${gae.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.appengine</groupId>
            <artifactId>appengine-testing</artifactId>
            <version>${gae.version}</version>
            <scope>test</scope>
        </dependency>
        <!-- DataNucleus -->
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-api-jpa</artifactId>
            <version>${datanucleus.jpa.version}</version>
        </dependency>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-core</artifactId>
            <version>${datanucleus.jpa.version}</version>
        </dependency>
        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-enhancer</artifactId>
            <version>${datanucleus.jpa.version}</version>
        </dependency>
        <dependency>
            <groupId>com.google.appengine.orm</groupId>
            <artifactId>datanucleus-appengine</artifactId>
            <version>${datanucleus.version}</version>
            <!-- Need to exclude the enhancer since it interfere with the enhancer plugin. -->
            <exclusions>
                <exclusion>
                    <groupId>org.datanucleus</groupId>
                    <artifactId>datanucleus-enhancer</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>javax.jdo</groupId>
            <artifactId>jdo-api</artifactId>
            <version>3.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.geronimo.specs</groupId>
            <artifactId>geronimo-jpa_2.0_spec</artifactId>
            <version>1.1</version>
        </dependency>

        <!-- OpenJPA -->
        <dependency>
            <groupId>org.apache.openjpa</groupId>
            <artifactId>openjpa-persistence</artifactId>
            <version>2.3.0</version>
        </dependency>


    </dependencies>

    <properties>
        <start-class>demo.Application</start-class>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.7</java.version>
        <m2eclipse.wtp.contextRoot>/</m2eclipse.wtp.contextRoot>
        <datanucleus.jpa.version>3.1.1</datanucleus.jpa.version>
        <datanucleus.version>2.1.2</datanucleus.version>
        <gae.version>1.8.8</gae.version>
        <gae.home>${settings.localRepository}/com/google/appengine/appengine-java-sdk/${gae.version}/appengine-java-sdk/appengine-java-sdk-${gae.version}</gae.home>
        <gae.application.version>test</gae.application.version>
        <!--<org.springframework-version>4.0.5.RELEASE</org.springframework-version>-->
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <!--
            <plugin>
                <groupId>net.kindleit</groupId>
                <artifactId>maven-gae-plugin</artifactId>
                <version>0.9.6</version>
                <dependencies>
                    <dependency>
                        <groupId>net.kindleit</groupId>
                        <artifactId>gae-runtime</artifactId>
                        <version>${gae.version}</version>
                        <type>pom</type>
                    </dependency>
                </dependencies>
            </plugin>
            -->
            <plugin>
                <groupId>com.google.appengine</groupId>
                <artifactId>appengine-maven-plugin</artifactId>
                <version>${gae.version}</version>
                <configuration>
                    <enableJarClasses>false</enableJarClasses>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-release-plugin</artifactId>
                <configuration>
                    <goals>gae:deploy</goals>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat6-maven-plugin</artifactId>
                <version>2.0</version>
                <configuration>
                    <path>/</path>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.datanucleus</groupId>
                <artifactId>maven-datanucleus-plugin</artifactId>
                <version>${datanucleus.jpa.version}</version>
                <configuration>
                    <api>JPA</api>
                    <!--<mappingIncludes>**/entity/*.class</mappingIncludes>-->
                    <verbose>true</verbose>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.datanucleus</groupId>
                        <artifactId>datanucleus-core</artifactId>
                        <version>${datanucleus.jpa.version}</version>
                    </dependency>
                </dependencies>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>enhance</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <!-- We can configure our integration server to activate this profile and 
            perform gae:deploy, thus uploading latest snapshot to the http://1.latest.<applicationName>.appspot.com 
            automatically -->
        <profile>
            <id>integration-build</id>
            <properties>
                <gae.application.version>stage</gae.application.version>
            </properties>
        </profile>

        <!-- This profile will activate automatically during release and upload 
            application to the http://2.latest.<applicationName>.appspot.com (We might 
            want to set the 2nd version as our applications Default version to be accessible 
            at http://<applicationName>.appspot.com) -->
        <profile>
            <id>release-build</id>
            <activation>
                <property>
                    <name>performRelease</name>
                    <value>true</value>
                </property>
            </activation>

            <properties>
                <!-- During release, set application version in appengine-web.xml to 
                    2 -->
                <gae.application.version>release</gae.application.version>
            </properties>
        </profile>
    </profiles>

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>http://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>http://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

</project>
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我想知道我的应用程序中可能缺少什么？我按照这里的说明在Google Appengine上使用Spring Data JPA

And*_*son 164

您没有为Spring Boot提供足够的信息来自动配置a DataSource.为此,您需要application.properties使用spring.datasource前缀添加一些属性.查看DataSourceProperties以查看可以设置的所有属性.

您需要提供相应的URL和驱动程序类名称:

spring.datasource.url = …
spring.datasource.driver-class-name = …
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  • 不知道该放什么我在使用DataNucleus + Google App Engine (3认同)

use*_*009 110

如果您想使用Spring Boot的嵌入式H2数据库,请将以下依赖项添加到您的pom文件中.

    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.3.156</version>
    </dependency>
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但正如评论中所提到的,嵌入式H2数据库将数据保存在内存中,并且不会永久存储它.

  • @SARose - 当然不会!它是一个"内存"数据库. (9认同)
  • 我正在尝试构建一个人的应用程序,我得到这个"无法确定...对于数据库类型NONE"错误.在尝试其他解决方案之后,我尝试了这个并且它有效.该应用程序使用两个DB,由属性配置.我配置了它们,但是出现了这个错误.添加H2依赖项后,不再出现错误.该应用程序使用我指定的其他数据库,没有任何东西进入H2,AFAICT.可能是弹簧启动的副作用或此应用程序设计中的问题,但它需要H2才能启动.由于其他人有这个问题,它不能只是这个应用程序. (5认同)
  • 这不是一个真正的解决方案.据我所知,H2不会永久保存数据. (3认同)
  • 我遇到了与spring-boot-starter-jdbc相同的问题.试过这个建议,它解决了我的问题. (2认同)

Ade*_*lin 83

我有同样的问题,排除DataSourceAutoConfiguration解决了这个问题. 

@SpringBootApplication
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class RecommendationEngineWithCassandraApplication {

    public static void main(String[] args) {
        SpringApplication.run(RecommendationEngineWithCassandraApplication.class, args);
    }
}
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  • 谢谢!可以在`application.properties`中配置它,比如`spring.main.web-environment = false` (3认同)
  • 我在非 SpringBootApplication 类中发现了 `@EnableAutoConfiguration`，并且也必须在那里添加排除项。TBH，我可能一开始就不需要`@EnableAutoConfiguration`：/ (2认同)

ali*_*opi 62

这对我有用(1.3.0.M5):

import org.springframework.boot.autoconfigure.jdbc.*;
import org.springframework.boot.autoconfigure.orm.jpa.*;

@Configuration
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
public class Application {
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排除这两个类.

它没有用

@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
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  • 这个是为那些不明白为什么他们"神秘地"在他们的应用程序中需要数据库访问的人不应该(例如,当一些其他应用程序正在处理数据库访问而这个只是一个'客户'时). (6认同)

小智 27

你可以加 

spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
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到你的application.properties文件.

  • 如果不需要jdbc数据源，这应该是可接受的答案。 (2认同)

And*_*son 19

现在我仔细观察,我认为DataSource问题是一个红色的鲱鱼.正在触发Boot的Hibernate自动配置,这就是导致需要DataSource的原因.Hibernate位于类路径上,因为你依赖于spring-boot-starter-data-jpa它所引入的依赖hibernate-entitymanager.

更新您的spring-boot-starter-data-jpa依赖项以排除Hibernate:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
        </exclusion>
    </exclusions>
</dependency>
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小智 14

从Spring手册.

Spring Boot可以自动配置嵌入式H2,HSQL和Derby数据库.您不需要提供任何连接URL,只需包含对要使用的嵌入式数据库的构建依赖关系.

例如,典型的POM依赖关系是:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
    <groupId>org.hsqldb</groupId>
    <artifactId>hsqldb</artifactId>
    <scope>runtime</scope>
</dependency>
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对于我来说,抛弃spring-boot-starter-data-jpa依赖关系,只使用spring-boot-starter-jdbc依赖就像魅力一样,只要我将h2(或hsqldb)作为依赖项包含在内.

Vin*_*ino 9

Spring启动将在application.properties文件中查找datasoure属性.

请在application.properties或yml文件中定义它

application.properties

spring.datasource.url=xxx
spring.datasource.username=xxx
spring.datasource.password=xxx
spring.datasource.driver-class-name=xxx
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如果您需要自己的配置,可以设置自己的配置文件,并在创建bean时使用数据源值.

小智 7

如果回答为时已晚,我不会这样做.我可以通过从Spring引导中排除DataSourceAutoConfiguration来解决这个问题.

  • 有关排除的文档,请访问:http://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-auto-configuration.html (3认同)

Aji*_*esh 5

我在使用Spring Data为ElasticSearch编写API时遇到了此异常。我做了以下工作。

@SpringDataApplication(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
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