使用@Conditional 给Bean的实例化加开关

public class isOpenMemcached implements Condition {    @Override    public boolean matches(ConditionContext conditionContext, AnnotatedTypeMetadata annotatedTypeMetadata) {        boolean flag=false;        if (conditionContext.getEnvironment().getProperty("isOpenMemcached")!=null){            if ("true".equals(conditionContext.getEnvironment().getProperty("isOpenMemcached"))){                flag = true;            }        }        return flag;    }}

@Bean@Conditional(isOpenMemcached.class)

public MemcachedClientFactoryBean memcachedClientFactoryBean(){

。。。。

}