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    Java 企業(yè)應(yīng)用
    不要溫柔的走入那個(gè)良夜

    2009-12-05 13:34 41人閱讀 評(píng)論(0) 收藏 舉報(bào)

    前天,偶然的機(jī)會(huì)聽(tīng)了一場(chǎng)IBM軟件工程師的講座,也偶然的接觸了一種思想---agile.講師是賈迎,參與過(guò)Lotus Notes/Domin的開(kāi)發(fā),如今是IBM的顧問(wèn)軟件工程師。

       Agile這種思想和現(xiàn)在的敏捷開(kāi)發(fā)有著相同的角度考慮問(wèn)題。以人為核心,循序漸進(jìn)的開(kāi)發(fā)方式。

       回來(lái)再學(xué)習(xí),看了幾篇文章,總結(jié)一下:

    ------------------------------------------------------

        敏捷軟件開(kāi)發(fā)是一個(gè)概念意義上的框架,用來(lái)取代軟件工程項(xiàng)目的概念;它強(qiáng)調(diào)在項(xiàng)目的整個(gè)生命周期中擁抱并促進(jìn)由于軟件進(jìn)化式的發(fā)展所帶來(lái)的變化
          請(qǐng)注意其中的三個(gè)關(guān)鍵詞:
    在項(xiàng)目的整個(gè)生命周期中:這就涉及到了【敏捷項(xiàng)目管理】、【敏捷需求獲取】、狹義的【敏捷軟件開(kāi)發(fā)】三個(gè)主要的領(lǐng)域和過(guò)程。要注意的是,上述三個(gè)過(guò)程并不是互相分開(kāi)的,而是你中有我,我中有你。
    擁抱并促進(jìn)變化:世界上唯一不變的是變化。不論在任何領(lǐng)域,漠視、甚至否認(rèn)、抗拒變化,都不是一個(gè)理性,嚴(yán)肅的人所應(yīng)有的態(tài)度。學(xué)會(huì)如何識(shí)別變化的大勢(shì),并在可能的時(shí)候,促使變化向好的方向發(fā)展。這才是面對(duì)變化的正確應(yīng)對(duì)之法。
    軟件進(jìn)化式的發(fā)展:雖然上面提到促進(jìn)變化的發(fā)展,但是軟件的演化過(guò)程,我相信是有其自身內(nèi)在邏輯的,存在一些根本規(guī)律和指導(dǎo)方針;并不是完全以人的主觀意識(shí)為主導(dǎo)。
      了解了這三個(gè)方面,下面引入大名鼎鼎、如雷貫耳、耳朵都要磨出糨子來(lái)的敏捷宣言(Manifesto for Agile Software Development)
    We are uncovering better ways of developing software by doing it and helping others do it.
    Through this work we have come to value:
    Individuals and interactions over processes and tools
    Working software over comprehensive documentation
    Customer collaboration over contract negotiation
    Responding to change over following a plan

    That is, while there is value in the items on the right, we value the items on the left more.

    在敏捷宣言的背后,有其遵循的12條原則
    Principles behind the Agile Manifesto
    We follow these principles:
    ☆ Our highest priority is to satisfy the customer through early and continuous delivery of vaphp?name=lua" onclick="tagshow(event)" class="t_tag">luable software.
    ☆ Welcome changing requirements, even late in development. Agile processes harness change for the customer's competitive advantage.
    ☆ Deliver working software frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale.
    ☆ Business people and developers must work together daily throughout the project.
    ☆ Build projects around motivated individuals. Give them the environment and support they need,
    and trust them to get the job done.
    ☆ The most efficient and effective method of conveying information to and within a development
    team is face-to-face conversation.
    ☆ Working software is the primary measure of progress.
    ☆ Agile processes promote sustainable development. The sponsors, developers, and users should be able to maintain a constant pace indefinitely.
    ☆ Continuous attention to technical excellence and good design enhances agility.
    ☆ Simplicity--the art of maximizing the amount of work not done--is essential.
    ☆ The best architectures, requirements, and designs emerge from self-organizing teams.
    ☆ At regular intervals, the team reflects on how to become more effective, then tunes and adjusts
    its behavior accordingly.
    ------------------------------------------------------------------

          想想我們聽(tīng)說(shuō)過(guò)的一些AOP的開(kāi)發(fā)方法,有哪些和這種思想是一致的?

          很多,不斷的迭代和不斷的簡(jiǎn)單化來(lái)完成目標(biāo)就是這樣的呀!

        《輕快的java》鼓勵(lì)人們使用SSH的方法來(lái)開(kāi)發(fā)軟件,因?yàn)樗麄儾挥每紤]EJB帶來(lái)的過(guò)度耦合,因?yàn)樗麄兪勾a簡(jiǎn)單,透明。

          吃什么就像什么,使用大量的Bean而沒(méi)有容器,就使Servlet很難管理,Spring的IoC的依賴注入完美的解決了問(wèn)題。

    ------------------------------------------------------------------

          而日常的生活中,又有那些問(wèn)題可以被Agile解決呢?

          我發(fā)現(xiàn)eclipse的流行就可以用這種思想來(lái)說(shuō)明,開(kāi)始我們的需求就是像記事本一樣的做代碼。然后運(yùn)行的時(shí)候要控制臺(tái),那就集成控制臺(tái),需要調(diào)試的時(shí)候,就集成Ant,需要什么就加什么。

          就像我們爬山的時(shí)候,為了尋找最短的路徑可能會(huì)走下山的路。

    ------------------------------------------------------------------

                                                      這些只是個(gè)人學(xué)習(xí)上一些理解。

                                                      歡迎指正。

    posted @ 2012-03-08 10:55 cpegtop 閱讀(211) | 評(píng)論 (0)編輯 收藏
     

     

    A young man sees a sunset and, unable to understand or to express the emotion that it rouses in him, concludes that it must be the gateway to world that lies beyond. It is difficult for any of us in moments of intense aesthetic experience to resist the suggestion that we are catching a glimpse of a light that shines down to us from a different realm of existence, different and, because the experience is intensely moving, in some way higher. And, though the gleams blind and dazzle, yet do they convey a hint of beauty and serenity greater than we have known or imagined. Greater too than we can describe; for language, which was invented to convey the meanings of this world, cannot readily be fitted to the uses of another.
           That all great has this power of suggesting a world beyond is undeniable. In some moods, Nature shares it. There is no sky in June so blue that it does not point forward to a bluer, no sunset so beautiful that it does not waken the vision of a greater beauty, a vision which passes before it is fully glimpsed, and in passing leaves and indefinable longing and regret. But, if this world is not merely a bad joke, life a vulgar flare amid the cool radiance of the stars, and existence an empty laugh braying across the mysteries; if these intimations of a something behind and beyond are not evil humour born of indigestion, or whimsies sent by the devil to mock and madden us. if, in a word, beauty means something, yet we must not seek to interpret the meaning. If we glimpse the unutterable, it is unwise to try to utter it, nor should we seek to invest with significance that which we cannot grasp. Beauty in terms of our human meanings is meaningless.

    --------------------------------------------------------------------------------------------------------------------------------------
    參考譯文
       一個(gè)年輕人看到日落,由于無(wú)法理解和表達(dá)日落在他心中喚起的激情,便得出結(jié)論:日落處想必是通往遙遠(yuǎn)世界的大門(mén)。無(wú)論是誰(shuí),在強(qiáng)烈感受到美的時(shí)刻,心中都不禁油生一種遐想:我們似乎瞥見(jiàn)從另一個(gè)世界射向我們的一線光芒,那個(gè)世界不僅不同于我們這個(gè)世界,而且由于美感的強(qiáng)烈感染,在某些方面比我們這個(gè)世界更美好。雖然這光芒令人眼花繚亂,但它確實(shí)給予我們一種不曾經(jīng)歷和無(wú)法想象的美感和靜謐的啟示。這種美感和靜謐是我們無(wú)法描述的,因?yàn)槲覀儼l(fā)明的語(yǔ)言是用來(lái)描述這個(gè)世界的含義,不能隨便拿來(lái)去描述另一個(gè)世界。
               不可否認(rèn),一切偉大的藝術(shù)都具有使人遐想到進(jìn)入天外世界的

    魅力。在某種狀態(tài)下,大自然也有這種魅力。六月蔚藍(lán)的天空總使人遙想一個(gè)更加蔚藍(lán)的蒼穹;美麗的落日總會(huì)引起一個(gè)更加絢麗的景象未及飽覽便一閃即逝,并在消逝中給人留下不可名狀的渴望和惆悵。如果這個(gè)世界不只是一個(gè)拙劣的惡作劇,如果人生不只是群星寒光中平凡的一閃,如果存在不只是對(duì)神秘事物的一種空虛的笑聲,如果某種玄妙事物的暗示不是消化不良引起的邪惡情緒,也不是魔鬼為了捉弄我們,使我們發(fā)狂而送給我們的邪念,一句話,如果美有某種意義的話,我閃千萬(wàn)不要去闡明它的意義。如果我瞥見(jiàn)了只可意會(huì)不可言傳的事物,企圖把它說(shuō)出來(lái),那上不明智的;對(duì)于我們不理解的事物,我們也不應(yīng)該去賦予它某種意義。用對(duì)我們?nèi)祟愑幸饬x的詞解釋美是沒(méi)有意義的。

    posted @ 2012-03-08 10:53 cpegtop 閱讀(1080) | 評(píng)論 (0)編輯 收藏
     

    我記得那美妙的一瞬;   

    在我的面前出現(xiàn)了你,   

    有如曇花一現(xiàn)的幻影,   

    有如純潔之美的天仙。  

    在那無(wú)望的憂愁的折磨中,   

    在那喧鬧的浮華生活的困擾中,   

    我的耳邊長(zhǎng)久地響著你溫柔的聲音,   

    我還在睡夢(mèng)中見(jiàn)到你可愛(ài)的倩影。

    許多年代過(guò)去了。

    暴風(fēng)驟雨般的激變   

    驅(qū)散了往日的夢(mèng)想,   

    于是我忘卻了你溫柔的聲音,   

    還有你那天仙似的倩影。

    在窮鄉(xiāng)僻壤,在囚禁的陰暗生活中,

    我的日子就那樣靜靜地消逝,   

    沒(méi)有傾心的人,沒(méi)有詩(shī)的靈感,   

    沒(méi)有眼淚,沒(méi)有生命,也沒(méi)有愛(ài)情。   

    如今心靈已開(kāi)始蘇醒,   

    這時(shí)在我的面前又重新出現(xiàn)了你,   

    有如曇花一現(xiàn)的幻影,   

    有如純潔之美的天仙。   

    我的心在狂喜中跳躍,   

    心中的一切又重新蘇醒,   

    有了傾心的人,有了詩(shī)的靈感,   

    有了生命,有了眼淚,也有了愛(ài)情

    posted @ 2012-03-08 10:50 cpegtop 閱讀(128) | 評(píng)論 (0)編輯 收藏
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