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

@Component
@PropertySource("classpath:mail.properties")
public class TestUtil {

private static String star;

@Autowired
public TestUtil(@Value("${mail.smtp.username}")String star) {
TestUtil.star = star;
}

@Component
public class EmailUtil {

    private static String emailSender;

    @Value ("${engine.email.sender}")
    public void setSender(String sender) {
        emailSender = sender;
    }

}    

　　

静态类

@Component
public class StaticFactory {

    @Autowired
    public  void setDataSource(DataSource dataSource) {
        StaticFactory.dataSource = dataSource;
    }

 private static   DataSource dataSource;
 }