目錄

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基本概念

代碼與實(shí)例

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基本概念

建造者模式（Builder）：將一個(gè)復(fù)雜對(duì)象的構(gòu)建與它的表示分離，使得同樣的構(gòu)建過(guò)程可以創(chuàng)建不同的表示。

建造者模式是在當(dāng)創(chuàng)建復(fù)雜對(duì)象的算法應(yīng)該獨(dú)立于該對(duì)象的組成部分以及它們裝配方式時(shí)適用的模式。

下面給出一個(gè)UML實(shí)例：

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代碼與實(shí)例

程序運(yùn)行截圖如下：

源碼如下：

Head.h

#include <string> using namespace std;typedef string Graphics; typedef string Pen;class PersonBuilder{public:virtual void buildHead(){}virtual void buildBody(){}virtual void buildArmLeft(){}virtual void buildArmRight(){}virtual void buildLegLeft(){}virtual void buildLegRight(){}PersonBuilder(Graphics g, Pen p);virtual ~PersonBuilder();private:Graphics *g;Pen *p; };class PersonThinBuilder : public PersonBuilder{public:PersonThinBuilder(Graphics g, Pen p);void buildHead();void buildBody();void buildArmLeft();void buildArmRight();void buildLegLeft();void buildLegRight(); };class PersonFatBuilder : public PersonBuilder{public:PersonFatBuilder(Graphics g, Pen p);void buildHead();void buildBody();void buildArmLeft();void buildArmRight();void buildLegLeft();void buildLegRight(); };class PersonDirector{public:PersonDirector(PersonBuilder *pb);void createPersion();private:PersonBuilder *pb; };

Head.cpp

#include "Head.h" #include <iostream>PersonThinBuilder::PersonThinBuilder(Graphics g, Pen p):PersonBuilder(g, p) {}void PersonThinBuilder::buildHead() {cout << "瘦子 畫(huà)頭" << endl; }void PersonThinBuilder::buildBody() {cout << "瘦子 畫(huà)身體" << endl; }void PersonThinBuilder::buildArmLeft() {cout << "瘦子 畫(huà)左手" << endl; }void PersonThinBuilder::buildArmRight() {cout << "瘦子 畫(huà)右手" << endl; }void PersonThinBuilder::buildLegLeft() {cout << "瘦子 畫(huà)左腳" << endl; }void PersonThinBuilder::buildLegRight() {cout << "瘦子 畫(huà)右腳" << endl; }PersonBuilder::PersonBuilder(Graphics g, Pen p) {this->g = new Graphics(g);this->p = new Pen(p); }PersonBuilder::~PersonBuilder() {delete g;delete p; }PersonFatBuilder::PersonFatBuilder(Graphics g, Pen p):PersonBuilder(g, p) {}void PersonFatBuilder::buildHead() {cout << "胖子 畫(huà)頭" << endl; }void PersonFatBuilder::buildBody() {cout << "胖子 畫(huà)身體" << endl; }void PersonFatBuilder::buildArmLeft() {cout << "胖子 畫(huà)左手" << endl; }void PersonFatBuilder::buildArmRight() {cout << "胖子 畫(huà)右手" << endl; }void PersonFatBuilder::buildLegLeft() {cout << "胖子 畫(huà)左腳" << endl; }void PersonFatBuilder::buildLegRight() {cout << "胖子 畫(huà)右腳" << endl; }PersonDirector::PersonDirector(PersonBuilder *pb) {this->pb = pb; }void PersonDirector::createPersion() {pb->buildBody();pb->buildHead();pb->buildArmLeft();pb->buildArmRight();pb->buildLegLeft();pb->buildLegRight(); }

main.cpp

#include "Head.h" #include <iostream> using namespace std;int main(int *argc, int *argv){PersonThinBuilder *pT = new PersonThinBuilder("畫(huà)瘦子", "紅筆");PersonDirector *pD = new PersonDirector(pT);pD->createPersion();delete pT;delete pD;cout << "------------ 華 麗 的 分 割 線 ------------" << endl;PersonFatBuilder *pF = new PersonFatBuilder("畫(huà)胖子", "黑筆");PersonDirector *pD2 = new PersonDirector(pF);pD2->createPersion();delete pF;delete pD2;getchar();return 0; }

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