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spring creating objects depending on properties?

spring creating objects depending on properties?# Java - 爪哇娇娃

T*M2011-05-11 07:05

1 楼

今天下午极其无聊，读文章的时候突然决定把放在硬盘里的老超女２００５给挖出来再
～～～看一遍。
唉，一听到周笔畅的嗓子，俺就晕了。TNND，两年多了，这嗓音对我的杀伤力还是这么
强。人都是主观的，俺也没要求过别人象俺这样喜欢过小周，但是俺就是不懂，怎么可
以有人的嗓子这么好听呢？？？而且俺还不懂，为啥这么好听的嗓子就没被包装好，唱
过什么真正属于她自己的好歌呢？？？我听她唱其他人的歌可是比那些歌手自己唱的都
有感觉啊。一下午，心脏居然有被刺透的感觉。
其实我也有客观的地方，我能听出小周低音和高音的有时候不和谐的地方，但是她唱得
舒服的时候，我听得是真舒服啊。
本以为两年多没看０５超女了应该新鲜一些，会有耐心听听别人的。结果发现还是拖着
鼠标，在小周同学处停一下听，或者拽回去再停一下。或者就是张靓影：这姐们自然嗓
音条件太好，跟其他人不是一个量级的。不过也就是因为如此，她老一开始老摆出一副
臭脸，好象跟这帮人一起唱多委屈了她，真让人对她喜欢不起来。直到５进３以后，才
放下架子，跟个小姑娘似地哭哭笑笑，唱什么也不太在意了，可爱了许多。老纪敏佳虽
然唱得好，太也太蛮，偶尔温柔一把就泯然众人了。

c*n2011-05-11 07:05

2 楼

now in spring, as long as I write a in the .xml, it will be
created (lazily ??),
I wonder if there is a way to disable creating an bean depending on
properties settings, for example, my main bean is

let's say I decide that I won't give salary to employees in some cases, so
I don't need to use the salaryQueryer, is there a way to disable creating
the mySalaryQueryer at all? (without changing the .xml)
of course the design could be quite wrong, but I'm just thinking about
this particular problem now.
thanks

g*g2011-05-11 07:05

3 楼

If you don't want to create mySalaryQueryer, don't put it
as a property of your Company bean.
You may dynamically get an instance using
BeanContext.getInstance().getCtx().getBean("mySalaryQueryer");
Make sure the queryer is lazy-init

【在 c******n 的大作中提到】

: now in spring, as long as I write a in the .xml, it will be
: created (lazily ??),
: I wonder if there is a way to disable creating an bean depending on
: properties settings, for example, my main bean is
:
:
:
: let's say I decide that I won't give salary to employees in some cases, so
: I don't need to use the salaryQueryer, is there a way to disable creating
: the mySalaryQueryer at all? (without changing the .xml)

w*s2011-05-11 07:05

4 楼

means

Company company = new Company();
while means
company.setSalaryQueryer(mySalaryQueryer);

【在 c******n 的大作中提到】

c*n2011-05-11 07:05

5 楼

got it, essentially taking what is written in .xml form and put it in
.java code , which has the ability to dynamically construct members
based on property settings

【在 g*****g 的大作中提到】

: If you don't want to create mySalaryQueryer, don't put it
: as a property of your Company bean.
: You may dynamically get an instance using
: BeanContext.getInstance().getCtx().getBean("mySalaryQueryer");
: Make sure the queryer is lazy-init

r*l2011-05-11 07:05

6 楼

【在 c******n 的大作中提到】

r*l2011-05-11 07:05

7 楼

You can use lookup method and put your switch there. If you queryer is not a
singleton, then this is not the expected use of lookup method though.

【在 c******n 的大作中提到】