我有一个在 Tomcat 和 Mysql 上使用 Spring 和 Hibernate 运行的 Web 应用程序。 我曾经在我的计算机上编写代码:一个基于 Windows 7 的环境:web 应用程序运行良好。

然后我尝试将它导出到远程 debian 服务器上，所以我安装了 tomcat 和 mysql，然后从我的 Windows mysql 数据库中导入一个转储。

即使我可以使用 mysql 控制台访问我的数据库，我的 webapp 也不能并给我这个错误:

20:35:03,020 DEBUG LogicalConnectionImpl:226 - Obtaining JDBC connection
20:35:03,021 DEBUG PoolableConnectionFactory:292 - Failed to validate a poolable connection
java.sql.SQLException: isValid() returned false
    at org.apache.commons.dbcp2.PoolableConnection.validate(PoolableConnection.java:228)
    at org.apache.commons.dbcp2.PoolableConnectionFactory.validateConnection(PoolableConnectionFactory.java:303)
    at org.apache.commons.dbcp2.PoolableConnectionFactory.validateObject(PoolableConnectionFactory.java:288)
    at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:488)
    at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:361)
    at org.apache.commons.dbcp2.PoolingDataSource.getConnection(PoolingDataSource.java:119)
    at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1413)
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:139)

然后我搜索并找到了一些关于 "hibernate.hbm2ddl.auto" 的东西，所以我添加到我的 conf 中: prop.put("hibernate.hbm2ddl.auto", "验证");

现在:

20:53:24,701 ERROR ContextLoader:331 - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateMenuDao': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.meltdown.menu.infra.HibernateMenuDao.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class com.meltdown.config.ViewConfig: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.hibernate.SessionFactory com.meltdown.config.ViewConfig.sessionFactory()] threw exception; nested exception is org.hibernate.HibernateException: Missing table: BARS
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)

看起来我的应用程序无法访问我的数据库，但我不明白为什么...

这是我的配置文件: 应用安全配置 @配置 @EnableWebSecurity 公共(public)类 AppSecurityConfig 扩展 WebSecurityConfigurerAdapter {

@Autowired
@Qualifier("userDetailsService")
UserDetailsService userDetailsService;

@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
    auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
}

@Override
protected void configure(HttpSecurity http) throws Exception {
    http
    .csrf().disable()
    .authorizeRequests()
    .antMatchers("/bo/**").access("hasRole('ROLE_ADMIN')")
    .antMatchers("/bo/bars**").access("hasRole('ROLE_SUPERADMIN')")
    .and().formLogin();
}

@Override
public void configure(WebSecurity web) throws Exception {
    web
    .ignoring()
    .antMatchers("/resources/**");
}

@Bean
public PasswordEncoder passwordEncoder(){
    PasswordEncoder encoder = new BCryptPasswordEncoder();
    return encoder;
}
}

MVC初始化器 公共(public)类 MVCInitializer 扩展了 AbstractAnnotationConfigDispatcherServletInitializer {

@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { ViewConfig.class };
}

 @Override
 protected Class<?>[] getServletConfigClasses() {
 return null;
 }

 @Override
 protected String[] getServletMappings() {
 return new String[] { "/" };
 }
}

查看配置

@EnableWebMvc
@Configuration
@ComponentScan({ "com.meltdown.*" })
@EnableTransactionManagement
@Import({ AppSecurityConfig.class })
public class ViewConfig extends WebMvcConfigurerAdapter {

    @Bean
    public SessionFactory sessionFactory() {
        LocalSessionFactoryBuilder builder = new LocalSessionFactoryBuilder(dataSource());
        builder.scanPackages("com.meltdown").addProperties(getHibernateProperties());
        return builder.buildSessionFactory();
    }

    private Properties getHibernateProperties() {
        Properties prop = new Properties();
        prop.put("hibernate.format_sql", "true");
        prop.put("hibernate.show_sql", "true");
        prop.put("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");
        prop.put("hibernate.hbm2ddl.auto", "validate");
        return prop;
    }

@Bean(name = "dataSource")
public BasicDataSource dataSource() {
    BasicDataSource ds = new BasicDataSource();
    ds.setDriverClassName("com.mysql.jdbc.Driver");
    ds.setUrl("jdbc:mysql://localhost:3306/meltdown2");
    ds.setUsername("root");
    ds.setPassword("myXP4NYYKF8");
    return ds;
}

//Create a transaction manager
@Bean
public HibernateTransactionManager txManager() {
    return new HibernateTransactionManager(sessionFactory());
}

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/resources/**").addResourceLocations("/resources/bo_theme/**");
}

@Bean
public InternalResourceViewResolver viewResolver() {
    InternalResourceViewResolver viewResolver
    = new InternalResourceViewResolver();
    viewResolver.setViewClass(JstlView.class);
    viewResolver.setPrefix("/WEB-INF/pages/");
    viewResolver.setSuffix(".jsp");
    return viewResolver;
}

 @Bean
  public MultipartResolver multipartResolver() {
    CommonsMultipartResolver resolver = new CommonsMultipartResolver();
    resolver.setMaxUploadSize(1000000);
    return resolver;
  }
}

最佳答案

我不确定这是否是唯一的问题，但我在您的日志中注意到了这个错误:

缺少表:BARS。

我知道 Windows 中的 mysql 表名默认情况下是不区分大小写的，而在 Linux/Unix 系统中它们是区分大小写的(我通过艰难的方式了解到，当我在 Windows 中开发的代码在我的 PC 上运行良好时，没有'部署在我们的 Linux 服务器上时无法工作)。

我假设您的代码引用表 BARS(所有大写字母)，而数据库中定义的表是 Bars 或 bars，它适用于 Windows，但不适用于 Linux/Unix。

关于java - 将项目从 Windows 导出到 Debian 时出现 Mysql 错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24770563/