如何配置 Spring Data 以在没有 XML 的情况下使用带有 Hibernate 的 Postgres？答案

【问题标题】：How to configure Spring Data to use Postgres with Hibernate without XML?如何配置 Spring Data 以在没有 XML 的情况下使用带有 Hibernate 的 Postgres？
【发布时间】：2015-12-26 21:11:34
【问题描述】：

我对 Spring Data 有以下应用程序配置。

@Configuration
public class PluginConfig {
  @Bean
  public DataSource dataSource() {
    DriverManagerDataSource driver = new DriverManagerDataSource();
    driver.setDriverClassName("org.postgresql.Driver");
    driver.setUrl("jdbc:postgresql:activitydb");
    driver.setUsername("activityman");
    driver.setPassword("activitymanpasses");
    return driver;
  }

  @Bean
  public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    vendorAdapter.setDatabase(Database.POSTGRESQL);
    vendorAdapter.setGenerateDdl(true);

    LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
    factory.setJpaVendorAdapter(vendorAdapter);
    factory.setPackagesToScan(getClass().getPackage().getName());
    factory.setDataSource(dataSource());

    return factory;
  }

  @Bean
  @Autowired
  public JpaTransactionManager transactionManager() {
    JpaTransactionManager txManager = new JpaTransactionManager();
    txManager.setEntityManagerFactory(entityManagerFactory().getObject());

    return txManager;
  }
}

当我使用new AnnotationConfigApplicationContext(PluginConfig.class) 运行测试用例时，会抛出异常，提示数据库地址无效。我想知道为什么？

StackTrace:

2015-09-29 17:15:50,535  WARN rg.hibernate.engine.jdbc.internal.JdbcServicesImpl: 204 - HHH000342: Could not obtain connection to query metadata : invalid database address: jdbc:postgresql:activitydb
2015-09-29 17:15:50,658 ERROR            org.hibernate.tool.hbm2ddl.SchemaUpdate: 226 - HHH000319: Could not get database metadata
java.sql.SQLException: invalid database address: jdbc:postgresql:activitydb
    at org.sqlite.JDBC.createConnection(JDBC.java:111) ~[sqlite-jdbc-3.8.7.jar:na]
    at org.sqlite.JDBC.connect(JDBC.java:88) ~[sqlite-jdbc-3.8.7.jar:na]
    at java.sql.DriverManager.getConnection(DriverManager.java:664) ~[na:1.8.0_45]
    at java.sql.DriverManager.getConnection(DriverManager.java:208) ~[na:1.8.0_45]
    at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:155) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:120) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:139) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.prepare(SuppliedConnectionProviderConnectionHelper.java:51) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:219) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:203) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:522) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857) [hibernate-entitymanager-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850) [hibernate-entitymanager-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:425) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:849) [hibernate-entitymanager-4.3.9.Final.jar:4.3.9.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) [spring-orm-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:343) [spring-orm-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318) [spring-orm-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at np.com.rts.qms.plugin.reporting.test.DatabaseTestcase.testDatabaseConnection(DatabaseTestcase.java:18) [test-classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) [junit-4.12.jar:4.12]
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) [junit-4.12.jar:4.12]
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit-4.12.jar:4.12]
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) [junit-4.12.jar:4.12]
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78) [junit-rt.jar:na]
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212) [junit-rt.jar:na]
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68) [junit-rt.jar:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) [idea_rt.jar:na]
2015-09-29 17:15:50,664 ERROR            org.hibernate.tool.hbm2ddl.SchemaUpdate: 272 - HHH000299: Could not complete schema update
java.sql.SQLException: invalid database address: jdbc:postgresql:activitydb
    at org.sqlite.JDBC.createConnection(JDBC.java:111) ~[sqlite-jdbc-3.8.7.jar:na]
    at org.sqlite.JDBC.connect(JDBC.java:88) ~[sqlite-jdbc-3.8.7.jar:na]
    at java.sql.DriverManager.getConnection(DriverManager.java:664) ~[na:1.8.0_45]
    at java.sql.DriverManager.getConnection(DriverManager.java:208) ~[na:1.8.0_45]
    at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:155) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:120) ~[spring-jdbc-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:139) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.tool.hbm2ddl.SuppliedConnectionProviderConnectionHelper.prepare(SuppliedConnectionProviderConnectionHelper.java:51) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:219) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:203) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:522) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1859) ~[hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857) [hibernate-entitymanager-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850) [hibernate-entitymanager-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:425) [hibernate-core-4.3.9.Final.jar:4.3.9.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:849) [hibernate-entitymanager-4.3.9.Final.jar:4.3.9.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) [spring-orm-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:343) [spring-orm-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318) [spring-orm-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) [spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84) [spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
    at np.com.rts.qms.plugin.reporting.test.DatabaseTestcase.testDatabaseConnection(DatabaseTestcase.java:18) [test-classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) [junit-4.12.jar:4.12]
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) [junit-4.12.jar:4.12]
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit-4.12.jar:4.12]
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) [junit-4.12.jar:4.12]
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78) [junit-rt.jar:na]
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212) [junit-rt.jar:na]
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68) [junit-rt.jar:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
    at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) [idea_rt.jar:na]

我看到它正在尝试使用 SQLite，这完全让我感到奇怪！我只是想将 Hibernate 配置为使用 Postgres 数据库。是不是dataSource()方法出错了？

更新：项目中有一个 SQLite 驱动程序依赖项，删除后解决了该问题。但我想知道这是设计使然，还是真正的问题？

【问题讨论】：

PostgreSQL 驱动程序是否在测试类路径中？
在类路径上似乎还有一个 SQLite JDBC 驱动程序，它拦截 URL 并引发错误（因为它不理解它）。从项目中删除 SQLite jar 文件
@SergeBallesta，是的
@a_horse_with_no_name，你是对的，我删除了对 SQLite 的依赖并且它起作用了。既然我已经明确指定了要使用的驱动程序，这不是一件很奇怪的事情吗？

标签： java spring hibernate postgresql spring-data

【解决方案1】：

这是数据源的基本 postgres 配置

@Bean
DataSource dataSource() {
    BasicDataSource dataSourceConfig = new BasicDataSource();
    dataSourceConfig.setDriverClassName("org.postgresql.Driver");

    dataSourceConfig.setUrl("jdbc:postgresql://127.0.0.1:5432/databasename");
    dataSourceConfig.setUsername("username");
    dataSourceConfig.setValidationQuery("SELECT 1");
    dataSourceConfig.setPassword("password");

    return dataSourceConfig;
}

在需要时休眠

private static final String[] ENTITY_PACKAGES = {
        "com.applicationname.security.domain",
        "com.applicationname.audit.domain"
};

@Bean(name = "entityManagerFactory")
LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) {
    LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
    entityManagerFactoryBean.setDataSource(dataSource);
    entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
    entityManagerFactoryBean.setPackagesToScan(ENTITY_PACKAGES);

    Properties jpaProperties = new Properties();

    //Configures the used database dialect. This allows Hibernate to create SQL
    //that is optimized for the used database.
    jpaProperties.put(PROPERTY_NAME_HIBERNATE_DIALECT, "org.hibernate.dialect.PostgreSQLDialect");

    //Specifies the action that is invoked to the database when the Hibernate
    //SessionFactory is created or closed.
    jpaProperties.put(PROPERTY_NAME_HIBERNATE_HBM2DDL_AUTO, "none");

    //Configures the naming strategy that is used when Hibernate creates
    //new database objects and schema elements
    //jpaProperties.put(PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY, env.getRequiredProperty(PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY));

    //If the value of this property is true, Hibernate writes all SQL
    //statements to the console.
    jpaProperties.put(PROPERTY_NAME_HIBERNATE_SHOW_SQL, "true");

    //If the value of this property is true, Hibernate will use prettyprint
    //when it writes SQL to the console.
    jpaProperties.put(PROPERTY_NAME_HIBERNATE_FORMAT_SQL, "true");

    entityManagerFactoryBean.setJpaProperties(jpaProperties);

    return entityManagerFactoryBean;
}

【讨论】：

【解决方案2】：

我觉得数据库url格式应该是：

jdbc:postgresql://HOST:PORT/activitydb

我看到您的数据库 url 使用默认的 host:port ，如果您的数据库不在本地主机上，这将是 localhost:5432 这可能是问题。

其他人提到你必须在类路径上有 sqllite 并且 Spring 正在尝试自动配置它。（如果这不是您的意图，请删除它）

我将提供以下配置替代基本 Postgres 配置。它允许 Spring 自动配置更多的东西，并且不那么冗长。

使用这样的 application.properties 文件：

spring.datasource.url=jdbc:postgresql://HOST:PORT/activitydb
spring.datasource.username=activityman
spring.datasource.password=activitymanpasses
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.generate-ddl=true

还有这样的 PluginConfig：

@EnableJpaRepositories(basePackages = "com.activityman.db")
@EntityScan(basePackages = "com.activityman.domain")
public class DataConfiguration { 
}

您可以像这样设置存储库：

@Repository
@Qualifier(value = "userRepository")
public interface UserRepository extends CrudRepository<User, Long> {
    public User findByUsername(String username);
    public User findByEmail(String email);
}

然后您可以让 Spring 进行配置，然后像这样访问您的存储库：

public class CustomUserDetailsService implements UserDetailsService {

    @Autowired
    private UserRepository userRepository;

    @Transactional(readOnly=true)
    @Override
    public UserDetails loadUserByUsername(final String email)
            throws UsernameNotFoundException {

        com.activityman.domain.User user = userRepository.findByEmail(email);
        List<GrantedAuthority> authorities = buildUserAuthority(user.getRoles());

        return buildUserForAuthentication(user, authorities);

    }

 // omitted for brevity

【讨论】：

jdbc:postgresql:activitydb 有效：jdbc.postgresql.org/documentation/94/connect.html
谢谢。我以前没用过那种快捷语法！
@MichaelKowalski，通过删除对 SQLite 的依赖解决了这个问题。并感谢备用配置。 :)
@MichaelKowalski 上面的示例使用了一种已弃用的方言 PostgreSQLDialect。我建议将此更新为 PostgreSQL10Dialect