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我的 Spring 引导应用程序中不断收到 ConflictingBeanDefinitionException 错误。我不完全确定如何解决它，我有几个 @Configuration 注释类帮助设置 Thymeleaf、Spring Security 和 Web。为什么应用程序尝试设置 homeController 两次？ （它在哪里尝试这样做？）
错误是：
org.springframework.beans.factory.BeanDefinitionStoreException:
Failed to parse configuration class [org.kemri.wellcome.hie.Application]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException:
Annotation-specified bean name 'homeController' for bean class [org.kemri.wellcome.hie.HomeController] conflicts with existing, non-compatible bean definition of same name and class [org.kemri.wellcome.hie.controller.HomeController]
我的 spring boot 主应用程序初始化程序：
@EnableScheduling
@EnableAspectJAutoProxy
@EnableCaching
@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
protected final SpringApplicationBuilder configure(final SpringApplicationBuilder application) {
return application.sources(Application.class);
}
}
我的数据库配置文件：
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages="org.kemri.wellcome.hie.repositories")
@PropertySource("classpath:application.properties")
public class DatabaseConfig {
@Autowired
private Environment env;
@Autowired
private DataSource dataSource;
@Autowired
private LocalContainerEntityManagerFactoryBean entityManagerFactory;
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(env.getProperty("spring.datasource.driverClassName"));
dataSource.setUrl(env.getProperty("spring.datasource.url"));
dataSource.setUsername(env.getProperty("spring.datasource.username"));
dataSource.setPassword(env.getProperty("spring.datasource.password"));
return dataSource;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean entityManagerFactory =
new LocalContainerEntityManagerFactoryBean();
entityManagerFactory.setDataSource(dataSource);
// Classpath scanning of @Component, @Service, etc annotated class
entityManagerFactory.setPackagesToScan(
env.getProperty("spring.jpa.hibernate.entitymanager.packagesToScan"));
// Vendor adapter
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
entityManagerFactory.setJpaVendorAdapter(vendorAdapter);
// Hibernate properties
Properties additionalProperties = new Properties();
additionalProperties.put(
"hibernate.dialect",
env.getProperty("spring.jpa.hibernate.dialect"));
additionalProperties.put(
"hibernate.showsql",
env.getProperty("spring.jpa.hibernate.showsql"));
additionalProperties.put(
"hibernate.hbm2ddl.auto",
env.getProperty("spring.jpa.hibernate.hbm2ddl.auto"));
entityManagerFactory.setJpaProperties(additionalProperties);
return entityManagerFactory;
}
@Bean
public JpaTransactionManager transactionManager() {
JpaTransactionManager transactionManager =
new JpaTransactionManager();
transactionManager.setEntityManagerFactory(
entityManagerFactory.getObject());
return transactionManager;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
}
我的 Thymeleaf 配置文件：
@Configuration
public class ThymeleafConfig {
@Bean
public ServletContextTemplateResolver templateResolver(){
ServletContextTemplateResolver thymeTemplateResolver = new ServletContextTemplateResolver();
thymeTemplateResolver.setPrefix("/WEB-INF/views/");
thymeTemplateResolver.setSuffix(".html");
thymeTemplateResolver.setTemplateMode("HTML5");
return thymeTemplateResolver;
}
@Bean
public SpringSecurityDialect springSecurityDialect(){
SpringSecurityDialect dialect = new SpringSecurityDialect();
return dialect;
}
@Bean
public SpringTemplateEngine templateEngine() {
SpringTemplateEngine engine = new SpringTemplateEngine();
engine.addTemplateResolver(templateResolver());
Set<IDialect> dialects = new HashSet<IDialect>();
dialects.add(springSecurityDialect());
engine.setAdditionalDialects(dialects);
return engine;
}
@Bean
public ThymeleafViewResolver thymeleafViewResolver() {
ThymeleafViewResolver resolver = new ThymeleafViewResolver();
resolver.setTemplateEngine(templateEngine());
resolver.setViewClass(ThymeleafTilesView.class);
resolver.setCharacterEncoding("UTF-8");
return resolver;
}
}
我的 Web 配置类：
@Configuration
@PropertySource("classpath:application.properties")
public class WebConfig extends WebMvcAutoConfigurationAdapter {
@Autowired
private Environment env;
@Bean
public JavaMailSenderImpl javaMailSenderImpl() {
JavaMailSenderImpl mailSenderImpl = new JavaMailSenderImpl();
mailSenderImpl.setHost(env.getProperty("smtp.host"));
mailSenderImpl.setPort(env.getProperty("smtp.port", Integer.class));
mailSenderImpl.setProtocol(env.getProperty("smtp.protocol"));
mailSenderImpl.setUsername(env.getProperty("smtp.username"));
mailSenderImpl.setPassword(env.getProperty("smtp.password"));
Properties javaMailProps = new Properties();
javaMailProps.put("mail.smtp.auth", true);
javaMailProps.put("mail.smtp.starttls.enable", true);
mailSenderImpl.setJavaMailProperties(javaMailProps);
return mailSenderImpl;
}
@Bean
public CacheManager cacheManager() {
return new ConcurrentMapCacheManager();
}
}
我的控制器（设置控制器时出错）
@Controller
public class HomeController {
private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
/**
* Simply selects the home view to render by returning its name.
*/
@RequestMapping(value = "/", method = RequestMethod.GET)
public String home(Locale locale, Model model) {
logger.info("Welcome home! The client locale is {}.", locale);
Date date = new Date();
DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
String formattedDate = dateFormat.format(date);
model.addAttribute("serverTime", formattedDate );
return "index.html";
}
}
什么可能导致我的控制器类出现 ConflictingBeanDefinitionException 错误？
原文由 Timothy Tuti 发布，翻译遵循 CC BY-SA 4.0 许可协议
java
正如我发现的那样，解决方案是通过在组件扫描中包含一个过滤器来禁用双重初始化。就我而言：