静态变量与类如果被注解使用

需注意：定义的类一定要有有@Component或者@Service等注解。

静态变量

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@Component @PropertySource("classpath:mail.properties") public class TestUtil {   private static String star;   @Autowired public TestUtil(@Value("${mail.smtp.username}")String star) { TestUtil.star = star; }

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@Component public class EmailUtil {       private static String emailSender;       @Value ("${engine.email.sender}")     public void setSender(String sender) {         emailSender = sender;     }   }

　　

静态类

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@Component public class StaticFactory {       @Autowired     public  void setDataSource(DataSource dataSource) {         StaticFactory.dataSource = dataSource;     }    private static   DataSource dataSource;  }