Spring 3.1 Java配置 - @ Autowired，@ Configuration和@Profile挑战

我正在使用Spring 3.1和Servlet 3.0，并且对新的Java配置选项以及使用Spring配置文件非常感兴趣并且遇到了挑战 . 尽管我在网上看到的所有例子都让它看起来像是一个用@Configuration注释的类，但是其他对象@Autowired到我们看到的是自动装配直到几个bean之后才会发生已生成@Configuration类 .

这是我的初始化程序：

public class SpringMvcInitializer implements WebApplicationInitializer {

private static org.apache.log4j.Logger log= Logger.getLogger(SpringMvcInitializer.class);

@Override
public void onStartup(ServletContext servletContext) throws ServletException {
    // Create the 'root' Spring application context
    AnnotationConfigWebApplicationContext rootContext  = new AnnotationConfigWebApplicationContext();
    rootContext.scan("org.jc.config");
    servletContext.addListener(new ContextLoaderListener(rootContext));

    // Secures the application
    servletContext.addFilter("securityFilter", new DelegatingFilterProxy("springSecurityFilterChain"))
        .addMappingForUrlPatterns(null, false, "/*");       

    ServletRegistration.Dynamic appServlet =
            servletContext.addServlet("appServlet", new DispatcherServlet(new GenericWebApplicationContext()));
    appServlet.setLoadOnStartup(1); 

    appServlet.addMapping("/");

    log.info("Mvc Initializer starting");
}

我的Web配置

@Configuration
@EnableWebMvc
@ComponentScan(basePackages="org.jc" )
public class WebConfig extends WebMvcConfigurerAdapter {

@Bean
public InternalResourceViewResolver configureInternalResourceViewResolver() {
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/");
    resolver.setSuffix(".jsp");
    return resolver;
}

@Override
public void configureResourceHandling(ResourceConfigurer configurer) {
    configurer.addPathMapping("/resources/**");
    configurer.addResourceLocation("/resources/");
}

我的JPA配置类

@Configuration
public class JpaConfig {
private static Logger logger = Logger.getLogger(JpaConfig.class);

private AppEnvironmentI appEnvironment;

@Autowired
public void setAppEnvironment(AppEnvironmentI appEnvironment) {
    this.appEnvironment = appEnvironment;
    checkAppEnv("setAppEnvironment");
}

@Bean
public AppUser globalUser(){
    checkAppEnv("globalUser entry");
    AppUser appUser = new AppUser();
    checkAppEnv("globalUser exit");
    return appUser;
}

@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(){
    checkAppEnv("entityManagerFactory entry");
    LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean ();
    emf.setDataSource(dataSource());
    emf.setJpaVendorAdapter(this.jpaAdapter());
    emf.setPersistenceUnitName("JcEntities2");
    checkAppEnv("entityManagerFactory exit");
    return emf;
}

@Bean
public DataSource dataSource(){
    checkAppEnv("dataSource entry");
    DriverManagerDataSource ds = new DriverManagerDataSource();
    ds.setDriverClassName("org.apache.derby.jdbc.EmbeddedDriver");
    ds.setUrl("jdbc:derby://localhost:1527/JcTestDb");
    ds.setUsername("jc");
    ds.setPassword("pwd");
    checkAppEnv("dataSource exit");
    return ds;
}

@Bean
public JpaVendorAdapter jpaAdapter() {
    checkAppEnv("jpaAdapter entry");
    HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
    hibernateJpaVendorAdapter.setShowSql(true);
    hibernateJpaVendorAdapter.setDatabase(Database.DERBY);
    checkAppEnv("jpaAdapter exit");
    return hibernateJpaVendorAdapter;
}

@Bean
public PlatformTransactionManager transactionManager() {
    checkAppEnv("transactionManager entry and exit");
    return new JpaTransactionManager( entityManagerFactory().getObject() );
}

private void checkAppEnv(String _method){
    if(this.appEnvironment == null){
        logger.info(_method + " - App Environment is null!!!!");
    }else{
        logger.info(_method + " - App Environment JpaConfig = " + appEnvironment.externalPropertiesFile().getPropertyValue("environment"));
    }
}

我的 Profiles 班

@Configuration
@Profile("local")
public class AppEnvironmentLocal implements AppEnvironmentI{
private static Logger logger = Logger.getLogger(AppEnvironmentLocal.class);

@Bean
public AppEnvironment externalPropertiesFile(){
    logger.info("Fetching properties file for LOCAL environment");
    Properties props = FileUtilsJc.getPropertiesFromFlatFile("C:\\AppConf\\JcConf\\JcConfLocal.properties");
    AppEnvironment exf = new AppEnvironment(props);
    return exf;
}
}

Logger 输出：看起来Spring 3.1在将AppEnvironment注入类之前首先尝试创建Entity Manager Factory bean . 因此它创建了除全局用户（我用于测试的虚拟bean）和事务管理器之外的所有bean，注入AppEnvironment，然后创建全局用户和事务管理器bean .

任何想法非常感谢！

01-Sep-2011 10:20:55  INFO Mvc Initializer starting
01-Sep-2011 10:20:55  INFO entityManagerFactory entry - App Environment is null!!!!
01-Sep-2011 10:20:55  INFO dataSource entry - App Environment is null!!!!
01-Sep-2011 10:20:55  INFO dataSource exit - App Environment is null!!!!
01-Sep-2011 10:20:55  INFO jpaAdapter entry - App Environment is null!!!!
01-Sep-2011 10:20:55  INFO jpaAdapter exit - App Environment is null!!!!
01-Sep-2011 10:20:55  INFO entityManagerFactory exit - App Environment is null!!!!
01-Sep-2011 10:20:55  INFO Fetching properties file for LOCAL environment
01-Sep-2011 10:20:55  INFO setAppEnvironment - App Environment JpaConfig = LOCAL

这是我用来连接它的示例代码的URL：

http://blog.springsource.com/2011/02/14/spring-3-1-m1-introducing-profile/

我发现文档说明在Spring 3.1之前有必要将@AnnotationDrivenConfig注释添加到您的注入类中以便@Autowired工作但是在Spring 3.1中已经弃用了我发现了一堆帖子正在寻找这个注释但没有解决何时注入Configuration对象！