java - Spring 3.1配置: environment not injected

Question

我在 spring 3.1 配置中使用以下内容:

@Configuration
@EnableTransactionManagement
public class DataConfig {
    @Inject
    private Environment env;
    @Inject
    private DataSource dataSource;

    // @Bean
    public SpringLiquibase liquibase() {
        SpringLiquibase b = new SpringLiquibase();
        b.setDataSource(dataSource);
        b.setChangeLog("classpath:META-INF/db-changelog-master.xml");
        b.setContexts("test, production");
        return b;
    }

    @Bean
    public EntityManagerFactory entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean b = new LocalContainerEntityManagerFactoryBean();
        b.setDataSource(dataSource);
        HibernateJpaVendorAdapter h = new HibernateJpaVendorAdapter();
        h.setShowSql(env.getProperty("jpa.showSql", Boolean.class));
        h.setDatabasePlatform(env.getProperty("jpa.database"));

        b.setJpaVendorAdapter(h);
        return (EntityManagerFactory) b;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor persistenceExceptionTranslationPostProcessor() {
        PersistenceExceptionTranslationPostProcessor b = new PersistenceExceptionTranslationPostProcessor();
        // b.setRepositoryAnnotationType(Service.class);
        // do this to make the persistence bean post processor pick up our @Service class. Normally
        // it only picks up @Repository
        return b;

    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        JpaTransactionManager b = new JpaTransactionManager();
        b.setEntityManagerFactory(entityManagerFactory());
        return b;
    }

    /**
     * Allows repositories to access RDBMS data using the JDBC API.
     */
    @Bean
    public JdbcTemplate jdbcTemplate() {
        return new JdbcTemplate(dataSource);
    }


    @Bean(destroyMethod = "close")
    public DataSource dataSource() {

        BasicDataSource db = new BasicDataSource();
        if (env != null) {
            db.setDriverClassName(env.getProperty("jdbc.driverClassName"));
            db.setUsername(env.getProperty("jdbc.username"));
            db.setPassword(env.getProperty("jdbc.password"));
        } else {
            throw new RuntimeException("environment not injected");
        }
        return db;
    }
}

问题在于变量 env 未注入(inject)并且始终为空。

我没有对环境设置做任何事情，因为我不知道它是否需要或如何。我查看了温室示例，但没有找到专门针对环境的任何内容。我应该怎么做才能确保 env 被注入(inject)？

相关文件:

// CoreConfig.java
@Configuration
public class CoreConfig {

    @Bean
    LocalValidatorFactoryBean validator() {
        return new LocalValidatorFactoryBean();
    }

    /**
     * Properties to support the 'standard' mode of operation.
     */
    @Configuration
    @Profile("standard")
    @PropertySource("classpath:META-INF/runtime.properties")
    static class Standard {
    }

}


// the Webconfig.java
@Configuration
@EnableWebMvc
@EnableAsync
// @EnableScheduling
@EnableLoadTimeWeaving
@ComponentScan(basePackages = "com.jfd", excludeFilters = { @Filter(Configuration.class) })
@Import({ CoreConfig.class, DataConfig.class, SecurityConfig.class })
@ImportResource({ "/WEB-INF/spring/applicationContext.xml" })
public class WebConfig extends WebMvcConfigurerAdapter {


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

    @Bean
    public BeanNameViewResolver beanNameViewResolver() {
        BeanNameViewResolver b = new BeanNameViewResolver();
        b.setOrder(1);
        return b;
    }

    @Bean
    public InternalResourceViewResolver internalResourceViewResolver() {
        InternalResourceViewResolver b = new InternalResourceViewResolver();
        b.setSuffix(".jsp");
        b.setPrefix("/WEB-INF/jsp/");
        b.setOrder(2);
        return b;
    }

    @Bean
    public CookieLocaleResolver localeResolver() {
        CookieLocaleResolver b = new CookieLocaleResolver();
        b.setCookieMaxAge(100000);
        b.setCookieName("cl");
        return b;
    }

    // for messages
    @Bean
    public ResourceBundleMessageSource messageSource() {
        ResourceBundleMessageSource b = new ResourceBundleMessageSource();
        b.setBasenames(new String[] { "com/jfd/core/CoreMessageResources",
                "com/jfd/common/CommonMessageResources",
                "com/jfd/app/AppMessageResources",
                "com/jfd/app/HelpMessageResources" });
        b.setUseCodeAsDefaultMessage(false);
        return b;
    }

    @Bean
    public SimpleMappingExceptionResolver simpleMappingExceptionResolver() {
        SimpleMappingExceptionResolver b = new SimpleMappingExceptionResolver();

        Properties mappings = new Properties();
        mappings.put("org.springframework.web.servlet.PageNotFound", "p404");
        mappings.put("org.springframework.dao.DataAccessException",
                "dataAccessFailure");
        mappings.put("org.springframework.transaction.TransactionException",
                "dataAccessFailure");
        b.setExceptionMappings(mappings);
        return b;
    }

    /**
     * ViewResolver configuration required to work with Tiles2-based views.
     */
    @Bean
    public ViewResolver viewResolver() {
        UrlBasedViewResolver viewResolver = new UrlBasedViewResolver();
        viewResolver.setViewClass(TilesView.class);
        return viewResolver;
    }

    /**
     * Supports FileUploads.
     */
    @Bean
    public MultipartResolver multipartResolver() {
        CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
        multipartResolver.setMaxUploadSize(500000);
        return multipartResolver;
    }

    // for configuration
    @Bean
    public CompositeConfigurationFactoryBean myconfigurations()
            throws ConfigurationException {
        CompositeConfigurationFactoryBean b = new CompositeConfigurationFactoryBean();
        PropertiesConfiguration p = new PropertiesConfiguration(
                "classpath:META-INF/app-config.properties");
        p.setReloadingStrategy(new FileChangedReloadingStrategy());

        b.setConfigurations(new org.apache.commons.configuration.Configuration[] { p });
        b.setLocations(new ClassPathResource[] { new ClassPathResource(
                "META-INF/default-config.properties") });
        return b;
    }

    @Bean
    org.apache.commons.configuration.Configuration configuration()
            throws ConfigurationException {
        return myconfigurations().getConfiguration();
    }


// and the SecurityConfig.java
@Configuration
@ImportResource({ "/WEB-INF/spring/applicationContext-security.xml" })
public class SecurityConfig {

    @Bean
    public BouncyCastleProvider bcProvider() {
        return new BouncyCastleProvider();
    }

    @Bean
    public PasswordEncryptor jasyptPasswordEncryptor() {

        ConfigurablePasswordEncryptor b = new ConfigurablePasswordEncryptor();
        b.setAlgorithm("xxxxxx");
        return b;
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        PasswordEncoder b = new org.jasypt.spring.security3.PasswordEncoder();
        b.setPasswordEncryptor(jasyptPasswordEncryptor());
        return b;
    }

}

在applicationcontext.xml中，它只导入了两个xml来配置缓存和cassandra，所以可能并不重要。

Answer 1

不知道为什么，但使用 @Resource注释对我有用。 @Autowired 总是返回 null。