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<body lang=3DZH-CN style=3D'tab-interval:21.0pt;text-justify-trim:punctuati=
on'>
<div class=3DSection1 style=3D'layout-grid:15.6pt'>
<p class=3DMMTopic1 style=3D'margin-left:0cm;text-indent:0cm;tab-stops:21.0=
pt'><a
name=3D"_Toc129599215"><![if !supportLists]><span lang=3DEN-US style=3D'mso=
-fareast-font-family:
"Times New Roman"'><span style=3D'mso-list:Ignore'>1 </span></span><![endif=
]><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>面向构件的软件=
体系</span></a></p>
<p class=3DMMTopic2 style=3D'margin-left:0cm;text-indent:0cm;tab-stops:21.0=
pt'><a
name=3D"_Toc129599216"><![if !supportLists]><span lang=3DEN-US style=3D'mso=
-fareast-font-family:
Arial;mso-bidi-font-family:Arial'><span style=3D'mso-list:Ignore'>1.1 </spa=
n></span><![endif]><span
style=3D'font-family:SimHei;mso-ascii-font-family:Arial'>面向&#=
26500;件的概念架构</span></a></p>
<p class=3DMMTopic3 style=3D'margin-left:27.0pt;text-indent:0cm;tab-stops:l=
ist 97.9pt'><a
name=3D"_Toc129599217"><![if !supportLists]><span lang=3DEN-US style=3D'mso=
-fareast-font-family:
"Times New Roman"'><span style=3D'mso-list:Ignore'>1.1.1 </span></span><![e=
ndif]><span
style=3D'font-family:SimSun;mso-ascii-font-family:"Times New Roman";mso-han=
si-font-family:
"Times New Roman"'>构件的概念</span></a></p>
<p class=3DMMTopic4><span style=3D'font-family:SimHei;mso-ascii-font-family=
:Arial'>构件定义</span></p>
<p class=3DMsoBodyTextFirstIndent style=3D'mso-char-indent-count:2.0;line-h=
eight:
150%'><span style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family=
:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>关于到底什么是=
500;件、什么不是构件的=
;问题有很多不同意见&#=
65292;但无论如何，</span><span
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'>CBD(</span><span
style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>基于构件的开发</sp=
an><span
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'>)</span><span
style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>的基本是从定义!=
391;好、独立开发的部分=
;来建立系统。对于</span><sp=
an
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'>CBD</span><span
style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>而言，构件远非=
169;块化编程方法中的子=
;程序、面向对象方法&#=
20013;的对象或类、或系ń=
79;模型中的包。在</span><span
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'>CBD</span><span
style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>中，构件的概念=
082;包含了这些思想又扩=
;展了它们。构件是设&#=
35745;、实现以及维护基É=
10;构件的系统的基础。=
现在我们将采用一个=
0456;当广泛、全面的构ߥ=
4;定义：</span><span
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'><o:p></o:p></span></p>
<p class=3DMsoBodyTextFirstIndent style=3D'mso-char-indent-count:2.0;line-h=
eight:
150%'><span style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family=
:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>构件是一个独立=
457;布的功能部分，可以=
;通过它的接口访问它&#=
30340;服务。</span><span
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'><o:p></o:p></span></p>
<p class=3DMsoBodyTextFirstIndent style=3D'mso-char-indent-count:2.0;line-h=
eight:
150%'><span style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family=
:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>这个定义强调了=
500;件的很多重要方面。=
;第一，它将构件定义&#=
20026;一个可交付的单元z=
90;第二，构件会提供一=
些有用的功能，这些=
1151;能集合到一起会满ห=
5;一些需求。这些功能&=
#30340;设计符合一些设计=
934;则。第三，构件通过=
;接口提供服务。</span><span
lang=3DEN-US style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333=
333'>(</span><span
style=3D'mso-bidi-font-size:10.5pt;line-height:150%;font-family:SimSun;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Ro=
man";
color:#333333'>参见图</span><span lang=3DEN-US
style=3D'mso-bidi-font-size:10.5pt;line-height:150%;color:#333333'>3.1)<o:p=
></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US style=3D'color:#3366FF'><span
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APE<span
style=3D'mso-spacerun:yes'> </span>\* MERGEFORMAT <span style=3D'mso-=
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