变还是不变得看对应的那个对象的Scope。估计你是对scope有点疑惑，spring中每个scope类都实现了org.springframework.beans.factory.config.Scope接口，然后注册到org.springframework.beans.factory.config.CustomScopeConfigurer中。每次获取bean的时候底层都是访问Scope来获取的，你也可以定义自己的Scope。比如

public class ThreadScope implements org.springframework.beans.factory.config.Scope {
    private final ThreadLocal<Map<String, Object>> SCOPE_THREAD = new ThreadLocal() {
        @Override
        protected Object initialValue() {
            return new HashMap<String, Object>();
        }
    };

    @Override
    public Object get(String name, ObjectFactory<?> objectFactory) {
        if (SCOPE_THREAD.get().containsKey(name)) {
            return SCOPE_THREAD.get().get(name);
        }
        SCOPE_THREAD.get().put(name, objectFactory.getObject());
        return SCOPE_THREAD.get().get(name);
    }

    @Override
    public Object remove(String name) {
        return SCOPE_THREAD.get().remove(name);
    }

    //空实现代表不让spring容器管理bean
    @Override
    public void registerDestructionCallback(String s, Runnable runnable) {

    }

    @Override
    public Object resolveContextualObject(String s) {
        return null;
    }

    @Override
    public String getConversationId() {
        return null;
    }
}

然后注册：

<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
    <property name="scopes">
        <map>
            <entry key="thread">
                <bean class="xx.xx.xx.ThreadScope"></bean>
            </entry>
        </map>
    </property>
</bean>

这样就OK了，这个Scope就是每个线程的bean都是同一个