项目中采用工厂模式加策略模式,但是代码中还是存在大量的if esle 或者switch,为了消除冗余的代码,采用工厂+反射解决.
@Autowired
private ApplicationContext context;
public RecoveryInterface getInterface(Product product) {
RecoveryInterface recoveryInterface;
try {
String clazzStr = "具体实现类的相对路径,要加上**.**" + product.getProductInterface();
Class<?> aClass = Class.forName(clazzStr);
//刚开始采用这样的反射后来发现 发射生成的类没有加入ico容器中,自然无法获取到容器内容,改进代码
//recoveryInterface = (RecoveryInterface) aClass.newInstance();
Object bean = context.getAutowireCapableBeanFactory()
.createBean(aClass, AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE, true);
recoveryInterface = (RecoveryInterface) bean;
logger.info("factory:"+product.getProductInterface());
return recoveryInterface;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
原文:https://www.cnblogs.com/song1024/p/13297295.html