IOC @Autowired与new创建的对象

1.添加配置的类

@Component
public class ThriftComponent {

    
    @Value("${thrift.host}")
    public String host;
    
    @Value("${thrift.port}")
    public int port;
    
    @Value("${thrift.timeout}")
    public int timeout;
    
    

}

2.添加客户端类

public class ThriftClient {
    
    private final static Logger log = LoggerFactory.getLogger(ThriftClient.class);
    
//    @Autowired
//    private ThriftComponent tComponent;
    
    private TBinaryProtocol protocol;
    private TSocket transport;
    private String host;
    private int port;
    private int timeout;
    
    public ThriftClient(String h, int p, int t) {
        
 //    tComponent.host
 //    tComponent.port
 //    tComponent.timeout//不能直接在这里使用
        host = h;
        port= p;
        timeout = t;
    }
}

3.使用方法

@Autowired
private ThriftComponent tComponent;

ThriftClient tClient = new ThriftClient(tComponent.host,tComponent.port,tComponent.timeout);

 

4.@Autowired注入Spring Bean，则当前类必须也是Spring Bean才能调用它，不能用new xxx()来获得对象，这种方式获得的对象无法调用@Autowired注入的Bean。