Java 将Hibernate、JDBC和SpringSecurity连接在一起时出现问题_Java_Spring_Hibernate_Jdbc

Java 将Hibernate、JDBC和SpringSecurity连接在一起时出现问题

java spring hibernate jdbc

Java 将Hibernate、JDBC和SpringSecurity连接在一起时出现问题,java,spring,hibernate,jdbc,Java,Spring,Hibernate,Jdbc,我正在开发一个简单的SpringWeb应用程序。我使用SpringSecurity进行用户身份验证，使用Hibernate进行持久化。我希望Spring安全性使用数据库（而不是基本的内存身份验证）但是，我在运行应用程序时遇到了一个异常 SEVERE: Servlet /knights threw load() exception java.lang.ClassCastException: org.springframework.web.accept.ContentNegotiatio

我正在开发一个简单的SpringWeb应用程序。我使用SpringSecurity进行用户身份验证，使用Hibernate进行持久化。我希望Spring安全性使用数据库（而不是基本的内存身份验证）

但是，我在运行应用程序时遇到了一个异常

    SEVERE: Servlet /knights threw load() exception
java.lang.ClassCastException: 
org.springframework.web.accept.ContentNegotiationManagerFactoryBean$$EnhancerByCGLIB$$fae0dbb8 cannot be cast to org.springframework.web.accept.ContentNegotiationManager

我不知道是什么原因造成的。这可能是Hibernate生成的代理的问题吗？问题是，由于我是Spring新手，并且正在学习各种在线教程，所以我的配置是XML和Java配置文件的混合。我的Spring安全性和数据源是用Java配置的，Hibernate是用XML配置的

以下是完整的堆栈跟踪：

SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'handlerExceptionResolver' defined in class org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.web.servlet.HandlerExceptionResolver org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.handlerExceptionResolver()] threw exception; nested exception is java.lang.ClassCastException: org.springframework.web.accept.ContentNegotiationManagerFactoryBean$$EnhancerByCGLIB$$6412755f cannot be cast to org.springframework.web.accept.ContentNegotiationManager
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:581)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1025)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:921)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:487)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:626)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:651)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:599)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:665)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:518)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:459)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.java:160)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1280)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1193)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5176)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5460)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.web.servlet.HandlerExceptionResolver org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.handlerExceptionResolver()] threw exception; nested exception is java.lang.ClassCastException: org.springframework.web.accept.ContentNegotiationManagerFactoryBean$$EnhancerByCGLIB$$6412755f cannot be cast to org.springframework.web.accept.ContentNegotiationManager
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:181)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:570)
    ... 30 more
Caused by: java.lang.ClassCastException: org.springframework.web.accept.ContentNegotiationManagerFactoryBean$$EnhancerByCGLIB$$6412755f cannot be cast to org.springframework.web.accept.ContentNegotiationManager
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$fe413563.mvcContentNegotiationManager(<generated>)
    at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.addDefaultHandlerExceptionResolvers(WebMvcConfigurationSupport.java:632)
    at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.handlerExceptionResolver(WebMvcConfigurationSupport.java:596)
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$fe413563.CGLIB$handlerExceptionResolver$14(<generated>)
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$fe413563$$FastClassByCGLIB$$71eb2090.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:286)
    at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration$$EnhancerByCGLIB$$fe413563.handlerExceptionResolver(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:160)
    ... 31 more

AppConfig.java

：

PersistenceConfig.java

：包com.siegedog.browsergame.config

@Configuration
@EnableTransactionManagement
@ComponentScan({ "com.siegedog.browsergame" })
public class PersistenceConfig {

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

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        LocalSessionFactoryBean fb = new LocalSessionFactoryBean();
        fb.setPackagesToScan("com.siegedog.browsergame");
        fb.setDataSource(dataSource());
        fb.setHibernateProperties(hibernateProperties());
        return fb;
    }

    @Bean
    @Autowired
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
        HibernateTransactionManager txManager = new HibernateTransactionManager();
        txManager.setSessionFactory(sessionFactory);

        return txManager;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }

    Properties hibernateProperties() {
        return new Properties() {
            {
                setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
                setProperty("hibernate.globally_quoted_identifiers", "true");
            }
        };
    }
}

SecurityConfig.java

：最后，我的刀（非常简单）

PizzaDAO.java

： springmvcinInitializer.java WebSecurityConfig.java 这段代码只是设置了正确的路由身份验证规则。它还使用

AppConfig.java

中定义的数据源对已注册的用户进行身份验证

@Configuration
@EnableWebMvcSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    DataSource dataSource;

    /**
     * Important: csrf prevention is on by default.
     */
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/dashboard").hasRole("USER")
                .antMatchers("/forest").hasRole("USER")
                .antMatchers("/arena").hasRole("USER")
                .antMatchers("/store").hasRole("USER")
                .anyRequest().permitAll();

        http
            .formLogin().loginPage("/login").failureUrl("/login?error").defaultSuccessUrl("/dashboard")
            .permitAll()
        .and()
            .logout()
            .permitAll()
        .and()
            .exceptionHandling().accessDeniedPage("/403");
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.jdbcAuthentication().dataSource(dataSource)
            .usersByUsernameQuery("select name, password_hash, enabled from users where name=?")
            // Hash passwords with sha-256
            .passwordEncoder(new ShaPasswordEncoder(256))
            .authoritiesByUsernameQuery("select name, role from users where name=?");
    }
}

对于初学者来说，您有相当多的重复（为什么要混合使用xml和java配置？）

也是
```
@EnableWebMvc
```
是
```
@EnableTransactionManagement
```
是
```
@ComponentScan
```

注入错误的bean而不是

LocalSessionFactoryBean

注入

SessionFactory

bean，因为这是

FactoryBean

的全部目的

public class PizzaDAO {
@Autowired private LocalSessionFactoryBean mySessionFactory;

应该是

public class PizzaDAO {
@Autowired private SessionFactory mySessionFactory;

调用代码时应该删除

getObject（）

，因为现在有了一个普通的

会话工厂

，我认为需要将

添加到

servlet上下文.xml中，以便告诉Spring查找@Configuration注释。我设法解决了最初的问题。我不小心混淆了hibernate3和hibernate4类。我已经用我面临的最新问题更新了这个问题-Hibernate古怪。在某个地方，您正试图将工厂类绑定到实际的实现类中。无论您在何处尝试将ContentNegotiationManager
设置为`ContentNegotiationManagerFactoryBean`调用newInstance（）
或其他类似方法，感谢您的回复。我用固定的DAO代码和完整的堆栈跟踪更新了这个问题。问题是我自己并没有直接使用ContentNegotiationManager
。它正被其他东西使用，由于异常是在注释处理阶段抛出的，因此我无法找到更多关于它的信息，除了它与handlerExceptionResolver
有关之外。感谢您的回复！我已经用你的建议更新了我的代码，但我仍然得到那个例外。我还发布了一个完整的堆栈跟踪，因为它可能会有所帮助。我把XML和Java混为一谈是因为我刚刚开始使用Spring，并且我依赖于使用XML或Java配置的各种指南。我认为问题在于您有一个
和@EnableWebMvc。特别是与重复组件扫描相结合。您也可以添加web.xml吗。
import java.util.List;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

@Repository
@SuppressWarnings({"unchecked"})
public class PizzaDAO {
    @Autowired private SessionFactory sessionFactory;

    /**
     * @Transactional annotation below will trigger Spring Hibernate
     * transaction manager to automatically create a hibernate session. 
     * See src/main/webapp/WEB-INF/servlet-context.xml
     */
    @Transactional
    public List<Pizza> findAll() {
        Session session = sessionFactory.getCurrentSession();
        List<Pizza> pizzas = session.createQuery("from Pizza").list();
        return pizzas;
    }

    @Transactional
    public void save(Pizza pizza) {
        Session session = sessionFactory.getCurrentSession();
        session.save(pizza);
    }
}

@EnableWebMvc
@EnableTransactionManagement
@Configuration
@ComponentScan( {"com.siegedog.knights"} )
public class AppConfig extends WebMvcConfigurerAdapter {

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

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/assets/**").addResourceLocations(
                "classpath:/assets/");
        registry.addResourceHandler("/css/**").addResourceLocations("/css/");
        registry.addResourceHandler("/img/**").addResourceLocations("/img/");
        registry.addResourceHandler("/js/**").addResourceLocations("/js/");
    }

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

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        LocalSessionFactoryBean fb = new LocalSessionFactoryBean();
        fb.setPackagesToScan("com.siegedog.knights");
        fb.setDataSource(dataSource());
        fb.setHibernateProperties(hibernateProperties());
        return fb;
    }

    @Bean
    @Autowired
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
        HibernateTransactionManager txManager = new HibernateTransactionManager();
        txManager.setSessionFactory(sessionFactory);
        return txManager;
    }

    Properties hibernateProperties() {
        return new Properties() {
            {
                setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
                setProperty("hibernate.globally_quoted_identifiers", "true");
            }
        };
    }
}

public class SpringMvcInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

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

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

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

}

/** Required to inject the proper security filter. */
public class SpringSecurityInitializer extends AbstractSecurityWebApplicationInitializer {

}

@Configuration
@EnableWebMvcSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Autowired
    DataSource dataSource;

    /**
     * Important: csrf prevention is on by default.
     */
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/dashboard").hasRole("USER")
                .antMatchers("/forest").hasRole("USER")
                .antMatchers("/arena").hasRole("USER")
                .antMatchers("/store").hasRole("USER")
                .anyRequest().permitAll();

        http
            .formLogin().loginPage("/login").failureUrl("/login?error").defaultSuccessUrl("/dashboard")
            .permitAll()
        .and()
            .logout()
            .permitAll()
        .and()
            .exceptionHandling().accessDeniedPage("/403");
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.jdbcAuthentication().dataSource(dataSource)
            .usersByUsernameQuery("select name, password_hash, enabled from users where name=?")
            // Hash passwords with sha-256
            .passwordEncoder(new ShaPasswordEncoder(256))
            .authoritiesByUsernameQuery("select name, role from users where name=?");
    }
}

public class PizzaDAO {
@Autowired private LocalSessionFactoryBean mySessionFactory;

public class PizzaDAO {
@Autowired private SessionFactory mySessionFactory;