Spring MVC基於xml的配置註釋

Question

我是新來的Spring和嘗試基於xml的配置來註釋基本。我讀了這個教程amd編碼。它適用於基於xml的配置。 MVC Spring CRUD Tutorial

現在我將所有基於xml的配置轉換爲註釋，但我遇到了問題。我讀過幾乎所有我讀過的東西，但我沒有解決這個問題。

org.springframework.beans.factory.BeanCreationException：創建名爲'personController'的bean時出錯：注入自動裝配依賴失敗;嵌套異常是org.springframework.beans.factory.BeanCreationException：無法自動裝配方法：public void com.ulotrix.spring.controller.PersonController.setPersonService（com.ulotrix.spring.service.PersonService）;嵌套異常是org.springframework.beans.factory.NoSuchBeanDefinitionException：找不到符合要求的[com.ulotrix.spring.service.PersonService]類型的符合條件bean：期望至少1個符合此依賴關係自動裝配候選資格的bean。依賴註解：{}

AppConfig.java

@EnableWebMvc 
@Configuration 
@ComponentScan({ "com.ulotrix.spring.controller" }) 
public class AppConfig extends WebMvcConfigurerAdapter { 

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

@Override 
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { 
    configurer.enable(); 
} 

@Bean 
public SessionFactory sessionFactory() { 

    LocalSessionFactoryBuilder builder = new LocalSessionFactoryBuilder(dataSource()); 
    builder.scanPackages("com.ulotrix.spring.model"); 
    builder.addProperties(getHibernationProperties()); 

    return builder.buildSessionFactory(); 
} 

private Properties getHibernationProperties() { 

    Properties prop = new Properties(); 
    prop.put("hibernate.format_sql", "true"); 
    prop.put("hibernate.show_sql", "true"); 
    prop.put("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect"); 

    return prop; 
} 

@Bean(name = "dataSource") 
public BasicDataSource dataSource() { 

    BasicDataSource ds = new BasicDataSource(); 
    ds.setDriverClassName("com.mysql.jdbc.Driver"); 
    ds.setUrl("jdbc:mysql://localhost:3306/deneme_db2"); 
    ds.setUsername("root"); 
    ds.setPassword("xxx"); 

    return ds; 
} 

@Bean 
public HibernateTransactionManager txManger() { 
    return new HibernateTransactionManager(sessionFactory()); 
} 

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

} 

SpringMVCInitializer.java

public class SpringMvcInitializer implements WebApplicationInitializer { 

@Override 
public void onStartup(ServletContext container) { 
    // Create the 'root' Spring application context 
    AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext(); 
    rootContext.register(AppConfig.class); 

    // Manage the lifecycle of the root application context 
    container.addListener(new ContextLoaderListener(rootContext)); 

    // Create the dispatcher servlet's Spring application context 
    AnnotationConfigWebApplicationContext dispatcherServlet = new AnnotationConfigWebApplicationContext(); 
    dispatcherServlet.register(AppConfig.class); 

    // Register and map the dispatcher servlet 
    ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(dispatcherServlet)); 
    dispatcher.setLoadOnStartup(1); 
    dispatcher.addMapping("/"); 

} 

} 

PersonController.java

@Controller 
public class PersonController { 

private PersonService personService; 

@Autowired(required = true) 
@Qualifier(value = "personService") 
public void setPersonService(PersonService ps) { 
    this.personService = ps; 
} 

@RequestMapping(value = "/persons", method = RequestMethod.GET) 
public String listPersons(Model model) { 
    model.addAttribute("person", new Person()); 
    model.addAttribute("listPersons", this.personService.listPersons()); 
    return "person"; 
} 

//For add and update person both 
@RequestMapping(value = "/person/add", method = RequestMethod.POST) 
public String addPerson(@ModelAttribute("person") Person p) { 

    if(p.getId() == 0) { 
     this.personService.addPerson(p); 
    }else { 
     this.personService.updatePerson(p); 
    } 
    return "redirect:/persons"; 
} 

@RequestMapping(value = "/remove/{id}") 
public String removePerson(@PathVariable("id") int id) { 

    this.personService.removePerson(id); 
    return "redirect:/persons"; 
} 

@RequestMapping(value = "/edit/{id}") 
public String editPerson(@PathVariable("id") int id, Model model) { 
    model.addAttribute("person", this.personService.getPersonById(id)); 
    model.addAttribute("listPersons", this.personService.listPersons()); 
    return "person"; 
} 
} 

Answer 1

PersonService在包com.ulotrix.spring.services中定義，所以將@ComponentScan({ "com.ulotrix.spring.controller" })更改爲@ComponentScan({ "com.ulotrix.spring" })，因爲哪個彈簧可以發現包spring中定義的所有bean。