{"id":4413,"date":"2025-09-05T13:49:03","date_gmt":"2025-09-05T05:49:03","guid":{"rendered":"https:\/\/www.caiqinyi.cn\/?p=4413"},"modified":"2025-09-08T10:38:30","modified_gmt":"2025-09-08T02:38:30","slug":"ue5_design_pattern_iterator_pattern","status":"publish","type":"post","link":"https:\/\/www.caiqinyi.cn\/index.php\/2025\/09\/05\/ue5_design_pattern_iterator_pattern\/","title":{"rendered":"[UE5 \u8bbe\u8ba1\u6a21\u5f0f] \u8fed\u4ee3\u5668\u6a21\u5f0fIterator Pattern"},"content":{"rendered":"<p><script type=\"text\/javascript\" async src=\"https:\/\/www.caiqinyi.cn\/wp-content\/MathJax\/MathJax.js?config=TeX-AMS_CHTML\">\n<\/script><br \/>\n<script type=\"text\/x-mathjax-config\">\n    MathJax.Hub.Config({\n        tex2jax: {inlineMath: [['$','$']]},\n        TeX: {equationNumbers: {autoNumber: [\"AMS\"], useLabelIds: true}},\n        \"HTML-CSS\": {linebreaks: {automatic: true}},\n        SVG: {linebreaks: {automatic: true}}\n    });\n<\/script><\/p>\n<p><strong>\u53c2\u8003\u6750\u6599<\/strong><br \/>\n1. <a href=\"https:\/\/www.cnblogs.com\/shiroe\/p\/14909707.html\">\u3010UE4 \u8bbe\u8ba1\u6a21\u5f0f\u3011\u7b56\u7565\u6a21\u5f0f Strategy Pattern<\/a><br \/>\n3. <a href=\"https:\/\/www.runoob.com\/design-pattern\/iterator-pattern.html\">\u8fed\u4ee3\u5668\u6a21\u5f0f<\/a><br \/>\n3. <a href=\"https:\/\/blog.csdn.net\/2302_80644606\/article\/details\/141462740\">\u6e38\u620f\u5f00\u53d1\u8bbe\u8ba1\u6a21\u5f0f\u4e4b\u8fed\u4ee3\u5668\u6a21\u5f0f<\/a><br \/>\n4. <a href=\"https:\/\/www.cnblogs.com\/wengle520\/p\/12492708.html\">C++ STL\u8fed\u4ee3\u5668\u539f\u7406\u548c\u5b9e\u73b0<\/a><\/p>\n<p><strong>1. \u6982\u8ff0<\/strong><\/p>\n<p><strong>1.1 \u63cf\u8ff0<\/strong><\/p>\n<p>$\\cdot$ \u8fed\u4ee3\u5668\u6a21\u5f0f(Iterator Pattern) \u662f\u7f16\u7a0b\u73af\u5883\u4e2d\u975e\u5e38\u5e38\u7528\u7684\u8bbe\u8ba1\u6a21\u5f0f.<br \/>\n$\\\\$ \u8fed\u4ee3\u5668\u6a21\u5f0f\u63d0\u4f9b\u4e00\u79cd\u65b9\u6cd5\u987a\u5e8f\u8bbf\u95ee\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61\u4e2d\u7684\u5404\u4e2a\u5143\u7d20, \u800c\u53c8\u4e0d\u66b4\u9732\u5176\u5185\u90e8\u7684\u8868\u793a.<br \/>\n$\\\\$ \u8fed\u4ee3\u5668\u6a21\u5f0f\u5c5e\u4e8e\u884c\u4e3a\u578b\u6a21\u5f0f.<\/p>\n<p><!--more--><\/p>\n<p><strong>1.2 \u5957\u8def<\/strong><\/p>\n<p>$\\cdot$ <strong>\u5b9e\u73b0\u65b9\u5f0f:<\/strong><br \/>\n$\\\\$ 1) \u5b9a\u4e49\u8fed\u4ee3\u5668\u63a5\u53e3: \u5305\u542bHasNext()\u548cNext()\u7b49\u65b9\u6cd5, \u7528\u4e8e\u904d\u5386\u5143\u7d20.<br \/>\n$\\\\$ 2) \u521b\u5efa\u5177\u4f53\u8fed\u4ee3\u5668: \u5b9e\u73b0\u8fed\u4ee3\u5668\u63a5\u53e3, \u5b9a\u4e49\u5982\u4f55\u904d\u5386\u7279\u5b9a\u7684\u805a\u5408\u5bf9\u8c61.<br \/>\n$\\\\$ 3) \u805a\u5408\u7c7b: \u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\u7528\u4e8e\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u5bf9\u8c61.<\/p>\n<p>$\\cdot$ <strong>\u5173\u952e\u4ee3\u7801:<\/strong><br \/>\n$\\\\$ 1) \u8fed\u4ee3\u5668\u63a5\u53e3: \u89c4\u5b9a\u4e86\u904d\u5386\u5143\u7d20\u7684\u65b9\u6cd5.<br \/>\n$\\\\$ 2) \u5177\u4f53\u8fed\u4ee3\u5668: \u5b9e\u73b0\u4e86\u8fed\u4ee3\u5668\u63a5\u53e3, \u5305\u542b\u904d\u5386\u903b\u8f91.<\/p>\n<p>$\\cdot$ <strong>\u7ed3\u6784:<\/strong><br \/>\n$\\\\$ \u8fed\u4ee3\u5668\u6a21\u5f0f\u5305\u542b\u4ee5\u4e0b\u51e0\u4e2a\u4e3b\u8981\u89d2\u8272:<br \/>\n$\\\\$ 1) \u8fed\u4ee3\u5668\u63a5\u53e3(Iterator): \u5b9a\u4e49\u4e86\u8bbf\u95ee\u548c\u904d\u5386\u805a\u5408\u5bf9\u8c61\u4e2d\u5404\u4e2a\u5143\u7d20\u7684\u65b9\u6cd5, \u901a\u5e38\u5305\u62ec\u83b7\u53d6\u4e0b\u4e00\u4e2a\u5143\u7d20, \u5224\u65ad\u662f\u5426\u8fd8\u6709\u5143\u7d20, \u83b7\u53d6\u5f53\u524d\u4f4d\u7f6e\u7b49\u65b9\u6cd5.<br \/>\n$\\\\$ 2) \u5177\u4f53\u8fed\u4ee3\u5668(Concrete Iterator): \u5b9e\u73b0\u4e86\u8fed\u4ee3\u5668\u63a5\u53e3, \u8d1f\u8d23\u5bf9\u805a\u5408\u5bf9\u8c61\u8fdb\u884c\u904d\u5386\u548c\u8bbf\u95ee, \u540c\u65f6\u8bb0\u5f55\u904d\u5386\u7684\u5f53\u524d\u4f4d\u7f6e.<br \/>\n$\\\\$ 3) \u805a\u5408\u5bf9\u8c61\u63a5\u53e3(Aggregate): \u5b9a\u4e49\u4e86\u521b\u5efa\u8fed\u4ee3\u5668\u5bf9\u8c61\u7684\u63a5\u53e3, \u901a\u5e38\u5305\u62ec\u4e00\u4e2a\u5de5\u5382\u65b9\u6cd5\u7528\u4e8e\u521b\u5efa\u8fed\u4ee3\u5668\u5bf9\u8c61.<br \/>\n$\\\\$ 4) \u5177\u4f53\u805a\u5408\u5bf9\u8c61(Concrete Aggregate): \u5b9e\u73b0\u4e86\u805a\u5408\u5bf9\u8c61\u63a5\u53e3, \u8d1f\u8d23\u521b\u5efa\u5177\u4f53\u7684\u8fed\u4ee3\u5668\u5bf9\u8c61, \u5e76\u63d0\u4f9b\u9700\u8981\u904d\u5386\u7684\u6570\u636e.<\/p>\n<p><strong>1.3 \u4f7f\u7528\u573a\u666f<\/strong><\/p>\n<p>$\\cdot$ \u5f53\u9700\u8981\u904d\u5386\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61, \u800c\u53c8\u4e0d\u5e0c\u671b\u66b4\u9732\u5176\u5185\u90e8\u7ed3\u6784\u65f6.<\/p>\n<p><strong>1.4 \u4f18\u7f3a\u70b9<\/strong><\/p>\n<p>$\\cdot$ <strong>\u4f18\u70b9:<\/strong><br \/>\n$\\\\$ 1) \u652f\u6301\u591a\u79cd\u904d\u5386\u65b9\u5f0f: \u4e0d\u540c\u7684\u8fed\u4ee3\u5668\u53ef\u4ee5\u5b9a\u4e49\u4e0d\u540c\u7684\u904d\u5386\u65b9\u5f0f.<br \/>\n$\\\\$ 2) \u7b80\u5316\u805a\u5408\u7c7b: \u805a\u5408\u7c7b\u4e0d\u9700\u8981\u5173\u5fc3\u904d\u5386\u903b\u8f91.<br \/>\n$\\\\$ 3) \u591a\u904d\u5386\u652f\u6301: \u53ef\u4ee5\u540c\u65f6\u5bf9\u540c\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61\u8fdb\u884c\u591a\u6b21\u904d\u5386.<br \/>\n$\\\\$ 4) \u6269\u5c55\u6027: \u589e\u52a0\u65b0\u7684\u805a\u5408\u7c7b\u548c\u8fed\u4ee3\u5668\u7c7b\u90fd\u5f88\u65b9\u4fbf, \u65e0\u9700\u4fee\u6539\u73b0\u6709\u4ee3\u7801.<\/p>\n<p>$\\cdot$ <strong>\u7f3a\u70b9:<\/strong><br \/>\n$\\\\$ 1) \u7cfb\u7edf\u590d\u6742\u6027: \u6bcf\u589e\u52a0\u4e00\u4e2a\u805a\u5408\u7c7b, \u5c31\u9700\u8981\u589e\u52a0\u4e00\u4e2a\u5bf9\u5e94\u7684\u8fed\u4ee3\u5668\u7c7b, \u589e\u52a0\u4e86\u7c7b\u7684\u6570\u91cf.<\/p>\n<p><strong>2. UE5\u5b9e\u8df5<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"C++\" data-enlighter-theme=\"monokai\">\r\n\r\n#pragma once\r\n\r\ntemplate<typename T>\r\nclass TNode\r\n{\r\npublic:\r\n\tTNode() : Next(nullptr)\r\n\t{\r\n\t}\r\n\r\n\tTNode(T Val, TNode* P = nullptr) : Value(Val), Next(P)\r\n\t{\r\n\t}\r\n\r\npublic:\r\n\tT Value;\r\n\r\n\tTNode* Next;\r\n};\r\n\r\ntemplate<typename T>\r\nclass TMyList\r\n{\r\nprivate:\r\n\tclass TListIterator\r\n\t{\r\n\tpublic:\r\n\t\tTListIterator(TNode<T>* P = nullptr) : Ptr(P)\r\n\t\t{\r\n\t\t}\r\n\r\n\t\t\/\/ \u91cd\u8f7d++, --, *, ->\u7b49\u57fa\u672c\u64cd\u4f5c\r\n\t\t\/\/ \u8fd4\u56de\u5f15\u7528, \u65b9\u4fbf\u901a\u8fc7*It\u6765\u4fee\u6539\u5bf9\u8c61\r\n\t\tT& operator*() const\r\n\t\t{\r\n\t\t\treturn Pt->Value;\r\n\t\t}\r\n\r\n\t\tTNode<T>* operator->() const\r\n\t\t{\r\n\t\t\treturn Ptr;\r\n\t\t}\r\n\r\n\t\t\/\/ \u524d\u7f6e++\r\n\t\tTListIterator& operator++()\r\n\t\t{\r\n\t\t\tPtr = Ptr->Next;\r\n\t\t\treturn *this;\r\n\t\t}\r\n\r\n\t\t\/\/ \u540e\u7f6e++\r\n\t\tTListIterator operator++(int32)\r\n\t\t{\r\n\t\t\tTNode<T>* Tmp = Ptr;\r\n\t\t\t\/\/ this \u662f\u6307\u5411TListIterator\u7684\u5e38\u91cf\u6307\u9488, \u56e0\u6b64*this\u5c31\u662fTListIterator\u5bf9\u8c61, \u524d\u7f6e++\u5df2\u7ecf\u88ab\u91cd\u8f7d\u8fc7\r\n\t\t\t++(*this);\r\n\t\t\treturn TListIterator(Tmp);\r\n\t\t}\r\n\r\n\t\tbool operator==(const TListIterator& ListIterator) const\r\n\t\t{\r\n\t\t\treturn ListIterator.Ptr == this->Ptr;\r\n\t\t}\r\n\r\n\t\tbool operator!=(const TListIterator& ListIterator) const\r\n\t\t{\r\n\t\t\treturn ListIterator.Ptr != this->Ptr;\r\n\t\t}\r\n\r\n\tprivate:\r\n\t\tTNode<T>* Ptr; \/\/ \u6307\u5411List\u5bb9\u5668\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20\u7684\u6307\u9488\r\n\t};\r\n\r\npublic:\r\n\ttypedef TListIterator TIterator;\r\n\r\n\tTMyList()\r\n\t{\r\n\t\tHead = nullptr;\r\n\t\tTail = nullptr;\r\n\t\tSize = 0;\r\n\t}\r\n\r\n\t\/\/ \u4ece\u94fe\u8868\u5c3e\u90e8\u63d2\u5165\u5143\u7d20\r\n\tvoid PushBack(const T& Value)\r\n\t{\r\n\t\tif (Head == nullptr)\r\n\t\t{\r\n\t\t\tHead = new TNode<T>(Value);\r\n\t\t\tTail = Head;\r\n\t\t}\r\n\t\telse\r\n\t\t{\r\n\t\t\tTail->Next = new TNode<T>(Value);\r\n\t\t\tTail = Tail->Next;\r\n\t\t}\r\n\r\n\t\t++Size;\r\n\t}\r\n\r\n\t\/\/ \u6253\u5370\u94fe\u8868\u5143\u7d20\r\n\tvoid Print() const\r\n\t{\r\n\t\tfor (TNode<T>* Ptr = Head; Ptr != Tail->Next; Ptr = Ptr->Next)\r\n\t\t{\r\n\t\t\tUE_LOG(LogTemp, Log, TEXT(\"%s\"), *(Ptr->Value).ToString());\r\n\t\t}\r\n\t}\r\n\r\n\t\/\/ \u64cd\u4f5c\u8fed\u4ee3\u5668\u7684\u65b9\u6cd5\r\n\t\/\/ \u8fd4\u56de\u94fe\u8868\u5934\u90e8\u6307\u9488\r\n\tTIterator Begin() const\r\n\t{\r\n\t\treturn TListIterator(Head);\r\n\t}\r\n\r\n\t\/\/ \u8fd4\u56de\u94fe\u8868\u5c3e\u90e8\u6307\u9488\r\n\tTIterator End() const\r\n\t{\r\n\t\treturn TListIterator(Tail->Next);\r\n\t}\r\n\r\n\t\/\/ \u5176\u5b83\u6210\u5458\u51fd\u6570Insert\/Erase\/Emplace\r\n\r\nprivate:\r\n\tTNode<T> Head;\r\n\r\n\tTNode<T> Tail;\r\n\r\n\tint32 Size;\r\n};\r\n\r\n<\/pre>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"C++\" data-enlighter-theme=\"monokai\">\r\n\r\n#include \"MyList.h\"\r\n\r\n\r\nstruct FStudent\r\n{\r\n\tFStudent(const FString& N, int32 A) : Name(N), Age(A)\r\n\t{\r\n\t}\r\n\r\n\tFString ToString()\r\n\t{\r\n\t\treturn FString::Printf(TEXT(\"%s %d\"), *Name, Age);\r\n\t}\r\n\t\r\n\tFString Name;\r\n\r\n\tint32 Age;\r\n};\r\n\r\nint main()\r\n{\r\n\tTMyList<FStudent> L;\r\n\tL.PushBack(FStudent(TEXT(\"Bob\"), 1)); \/\/ \u4e34\u65f6\u91cf\u4f5c\u4e3a\u5b9e\u53c2\u4f20\u9012\u7ed9PushBack\u65b9\u6cd5\r\n\tL.PushBack(FStudent(TEXT(\"Allen\"), 2));\r\n\tL.PushBack(FStudent(TEXT(\"Anna\"), 3));\r\n\tL.Print();\r\n\r\n\tfor (TMyList<FStudent>::TIterator It = L.Begin(); It != L.End(); ++It)\r\n\t{\r\n\t\tUE_LOG(LogTemp, Log, TEXT(\"%s\"), *(*It).ToString());\r\n\t\t*It = FStudent(TEXT(\"Wengle\"), 18);\r\n\t}\r\n\t\r\n\treturn 0;\r\n}\r\n\r\n<\/pre>\n<p><strong>3. \u8fed\u4ee3\u5668\u6a21\u5f0f\u4e0e\u5f00\u95ed\u539f\u5219\u7684\u5173\u7cfb\u53ca\u5176\u5bf9\u6e38\u620f\u5f00\u53d1\u7684\u5f71\u54cd\u662f\u4ec0\u4e48?<\/strong><\/p>\n<p>\u8fed\u4ee3\u5668\u6a21\u5f0f\u4e0e\u5f00\u95ed\u539f\u5219\u7684\u5173\u7cfb\u53ca\u5176\u5bf9\u6e38\u620f\u5f00\u53d1\u7684\u5f71\u54cd\u53ef\u4ee5\u4ece\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\u8fdb\u884c\u8be6\u7ec6\u9610\u8ff0:<\/p>\n<p><strong>3.1 \u8fed\u4ee3\u5668\u6a21\u5f0f\u4e0e\u5f00\u95ed\u539f\u5219\u7684\u5173\u7cfb<\/strong><\/p>\n<p>\u8fed\u4ee3\u5668\u6a21\u5f0f\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u6cd5, \u4ee5\u987a\u5e8f\u8bbf\u95ee\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61\u4e2d\u7684\u5404\u4e2a\u5143\u7d20, \u800c\u4e0d\u9700\u8981\u66b4\u9732\u8be5\u5bf9\u8c61\u7684\u5185\u90e8\u8868\u793a. \u8fd9\u79cd\u6a21\u5f0f\u901a\u8fc7\u5c06\u904d\u5386\u7b97\u6cd5\u4ee3\u7801\u62bd\u53d6\u4e3a\u72ec\u7acb\u7684\u7c7b, \u4ece\u800c\u7b80\u5316\u4e86\u805a\u5408\u7c7b, \u5e76\u4e14\u4e0d\u9700\u8981\u6539\u52a8\u539f\u6709\u7684\u4ee3\u7801\u5c31\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u589e\u52a0\u65b0\u7684\u805a\u5408\u7c7b\u548c\u8fed\u4ee3\u5668\u7c7b.<br \/>\n$\\\\$ \u5f00\u95ed\u539f\u5219(Open-Closed Principle, OCP) \u7684\u6838\u5fc3\u601d\u60f3\u662f\u8f6f\u4ef6\u5b9e\u4f53(\u7c7b, \u6a21\u5757, \u51fd\u6570\u7b49) \u5e94\u8be5\u5bf9\u6269\u5c55\u5f00\u653e, \u5bf9\u4fee\u6539\u5173\u95ed. \u8fed\u4ee3\u5668\u6a21\u5f0f\u6b63\u662f\u7b26\u5408\u8fd9\u4e00\u539f\u5219\u7684\u5178\u578b\u4f8b\u5b50. \u5b83\u53ef\u4ee5\u5728\u4e0d\u4fee\u6539\u96c6\u5408\u5bf9\u8c61\u7684\u60c5\u51b5\u4e0b\u65b0\u589e\u4e0d\u540c\u7c7b\u578b\u7684\u8fed\u4ee3\u5668\u5bf9\u8c61, \u4ece\u800c\u6269\u5c55\u4e86\u96c6\u5408\u5bf9\u8c61\u7684\u529f\u80fd, \u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97\u8f6f\u4ef6\u5728\u9762\u5bf9\u65b0\u7684\u9700\u6c42\u65f6, \u80fd\u591f\u901a\u8fc7\u589e\u52a0\u65b0\u7684\u8fed\u4ee3\u5668\u7c7b\u6765\u6269\u5c55\u7cfb\u7edf\u7684\u529f\u80fd, \u800c\u65e0\u9700\u4fee\u6539\u73b0\u6709\u7684\u4ee3\u7801.<\/p>\n<p><strong>3.2 \u5bf9\u6e38\u620f\u5f00\u53d1\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u5728\u6e38\u620f\u5f00\u53d1\u4e2d, \u901a\u5e38\u9700\u8981\u5904\u7406\u5927\u91cf\u7684\u6570\u636e\u7ed3\u6784, \u5982\u89d2\u8272, \u7269\u54c1, \u4efb\u52a1\u7b49. \u901a\u8fc7\u4f7f\u7528\u8fed\u4ee3\u5668\u6a21\u5f0f, \u5f00\u53d1\u8005\u53ef\u4ee5\u65b9\u4fbf\u5730\u904d\u5386\u8fd9\u4e9b\u6570\u636e\u7ed3\u6784, \u800c\u65e0\u9700\u66b4\u9732\u5176\u5185\u90e8\u8868\u793a. \u8fd9\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027, \u8fd8\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u53ef\u6269\u5c55\u6027. \u4f8b\u5982, \u5728\u89d2\u8272\u626e\u6f14\u6e38\u620f\u4e2d, \u89d2\u8272\u5177\u6709\u4e0d\u540c\u7684\u6280\u80fd\u548c\u5c5e\u6027, \u901a\u8fc7\u8fed\u4ee3\u5668\u6a21\u5f0f, \u5f00\u53d1\u8005\u53ef\u4ee5\u65b9\u4fbf\u5730\u904d\u5386\u8fd9\u4e9b\u89d2\u8272, \u5e76\u4e3a\u6bcf\u4e2a\u89d2\u8272\u6dfb\u52a0\u65b0\u7684\u6280\u80fd\u6216\u5c5e\u6027.<br \/>\n$\\\\$ \u6e38\u620f\u4e2d\u7684\u6570\u636e\u7ed3\u6784\u5f80\u5f80\u975e\u5e38\u590d\u6742, \u5982\u89d2\u8272\u7684\u88c5\u5907\u7cfb\u7edf, \u4efb\u52a1\u7684\u5b8c\u6210\u60c5\u51b5\u7b49. \u8fed\u4ee3\u5668\u6a21\u5f0f\u53ef\u4ee5\u7b80\u5316\u8fd9\u4e9b\u590d\u6742\u6570\u636e\u7ed3\u6784\u7684\u904d\u5386\u8fc7\u7a0b. \u4f8b\u5982. \u901a\u8fc7\u5b9a\u4e49\u4e00\u4e2a\u901a\u7528\u7684\u8fed\u4ee3\u5668\u63a5\u53e3, \u5f00\u53d1\u8005\u53ef\u4ee5\u4e3a\u4e0d\u540c\u7684\u6570\u636e\u7ed3\u6784(\u5982\u88c5\u5907\u5217\u8868, \u4efb\u52a1\u5217\u8868\u7b49) \u63d0\u4f9b\u7edf\u4e00\u7684\u904d\u5386\u63a5\u53e3, \u4ece\u800c\u907f\u514d\u91cd\u590d\u7f16\u5199\u904d\u5386\u4ee3\u7801.<br \/>\n$\\\\$ \u8fed\u4ee3\u5668\u6a21\u5f0f\u652f\u6301\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u904d\u5386\u4e00\u4e2a\u805a\u5408\u5bf9\u8c61, \u5728\u4e0d\u6539\u53d8\u805a\u5408\u5bf9\u8c61\u7ed3\u6784\u7684\u524d\u63d0\u4e0b, \u53ef\u4ee5\u5b9a\u4e49\u65b0\u7684\u8fed\u4ee3\u5668\u7c7b\u6765\u652f\u6301\u65b0\u7684\u904d\u5386\u65b9\u5f0f. \u8fd9\u5bf9\u4e8e\u6e38\u620f\u5f00\u53d1\u5c24\u4e3a\u91cd\u8981, \u56e0\u4e3a\u4e0d\u540c\u7684\u6e38\u620f\u573a\u666f\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684\u904d\u5386\u65b9\u5f0f. \u4f8b\u5982, \u5728\u63a2\u7d22\u6e38\u620f\u4e2d, \u73a9\u5bb6\u53ef\u80fd\u9700\u8981\u4ee5\u4e0d\u540c\u7684\u987a\u5e8f\u8bbf\u95ee\u5730\u56fe\u4e0a\u7684\u4e0d\u540c\u5730\u70b9, \u901a\u8fc7\u8fed\u4ee3\u5668\u6a21\u5f0f, \u5f00\u53d1\u8005\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u8fd9\u79cd\u9700\u6c42.<br \/>\n$\\\\$ \u8fed\u4ee3\u5668\u6a21\u5f0f\u4e0d\u4ec5\u7b26\u5408\u5f00\u95ed\u539f\u5219, \u800c\u4e14\u5728\u6e38\u620f\u5f00\u53d1\u4e2d\u5177\u6709\u91cd\u8981\u7684\u5e94\u7528\u4ef7\u503c.<\/p>\n<p><strong>3.3 \u5728\u4f7f\u7528\u8fed\u4ee3\u5668\u6a21\u5f0f\u65f6, \u5982\u4f55\u907f\u514d\u6027\u80fd\u95ee\u9898\u5e76\u786e\u4fdd\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027?<\/strong><\/p>\n<p>\u5728\u4f7f\u7528\u8fed\u4ee3\u5668\u6a21\u5f0f\u65f6, \u907f\u514d\u6027\u80fd\u95ee\u9898\u5e76\u786e\u4fdd\u7cfb\u7edf\u7a33\u5b9a\u6027\u9700\u8981\u7efc\u5408\u8003\u8651\u591a\u4e2a\u65b9\u9762. \u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u5efa\u8bae:<br \/>\n$\\\\$ 1) \u5ef6\u8fdf\u52a0\u8f7d: \u4e3a\u4e86\u63d0\u9ad8\u8fed\u4ee3\u5668\u7684\u6548\u7387, \u53ef\u4ee5\u91c7\u7528\u5ef6\u8fdf\u52a0\u8f7d\u7684\u65b9\u5f0f. \u5373\u5728\u9700\u8981\u904d\u5386\u96c6\u5408\u5143\u7d20\u65f6\u624d\u5bf9\u96c6\u5408\u8fdb\u884c\u904d\u5386, \u4ece\u800c\u51cf\u5c11\u521d\u59cb\u5316\u6240\u9700\u7684\u65f6\u95f4\u548c\u5185\u5b58\u5f00\u9500.<br \/>\n$\\\\$ 2) \u8003\u8651\u6570\u636e\u5e93\u6027\u80fd\u548c\u5e76\u53d1\u8bbf\u95ee: \u5728\u4f7f\u7528JDBC\u8fdb\u884c\u6570\u636e\u67e5\u8be2\u65f6, \u7ed3\u679c\u96c6\u901a\u5e38\u662f\u4e00\u6b21\u6027\u5168\u90e8\u8bfb\u53d6\u5230\u5185\u5b58\u4e2d\u7684, \u8fd9\u53ef\u80fd\u4f1a\u5f15\u8d77\u5185\u5b58\u6ea2\u51fa. \u56e0\u6b64, \u9700\u8981\u7279\u522b\u6ce8\u610f\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u5e76\u53d1\u8bbf\u95ee\u7684\u5f71\u54cd, \u907f\u514d\u51fa\u73b0\u6570\u636e\u5e93\u9501\u548c\u6027\u80fd\u95ee\u9898.<br \/>\n$\\\\$ 3) \u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7684\u5b89\u5168\u6027: \u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d, \u4f7f\u7528\u8fed\u4ee3\u5668\u6a21\u5f0f\u53ef\u4ee5\u5b9e\u73b0\u5b89\u5168\u7684\u904d\u5386\u64cd\u4f5c, \u907f\u514d\u591a\u4e2a\u7ebf\u7a0b\u540c\u65f6\u8bbf\u95ee\u96c6\u5408\u9020\u6210\u7684\u95ee\u9898.<br \/>\n$\\\\$ 4) \u51cf\u5c11\u5185\u5b58\u6d88\u8017: \u8fed\u4ee3\u5668\u548c\u751f\u6210\u5668\u662f\u63d0\u9ad8\u6027\u80fd\u548c\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u7684\u91cd\u8981\u5de5\u5177. \u5b83\u4eec\u4e0d\u4ec5\u7b80\u5316\u4e86\u4ee3\u7801\u7ed3\u6784, \u800c\u4e14\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u96c6\u65f6\u5177\u6709\u660e\u663e\u7684\u4f18\u52bf.<br \/>\n$\\\\$ 5) \u907f\u514d\u4ee3\u7801\u590d\u6742\u6027\u589e\u52a0: \u867d\u7136\u8fed\u4ee3\u5668\u6a21\u5f0f\u53ef\u4ee5\u7b80\u5316\u96c6\u5408\u904d\u5386, \u4f46\u4e5f\u4f1a\u589e\u52a0\u4ee3\u7801\u7684\u590d\u6742\u5ea6\u548c\u7ef4\u62a4\u6210\u672c. \u56e0\u6b64, \u5728\u4f7f\u7528\u8fed\u4ee3\u5668\u6a21\u5f0f\u65f6, \u9700\u8981\u6743\u8861\u5176\u5e26\u6765\u7684\u4fbf\u5229\u6027\u548c\u6f5c\u5728\u7684\u590d\u6742\u6027.<br \/>\n$\\\\$ 6) \u6027\u80fd\u4f18\u5316: \u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b, \u8fed\u4ee3\u5668\u6a21\u5f0f\u53ef\u80fd\u4f1a\u5f15\u8d77\u6027\u80fd\u95ee\u9898. \u56e0\u6b64, \u9700\u8981\u5bf9\u8fed\u4ee3\u5668\u7684\u5b9e\u73b0\u8fdb\u884c\u4f18\u5316, \u4ee5\u786e\u4fdd\u5176\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6027\u80fd.<br \/>\n$\\\\$ 7) \u53ef\u9760\u6027\u95ee\u9898: \u8fed\u4ee3\u5668\u6a21\u5f0f\u53ef\u80fd\u5b58\u5728\u4e00\u4e9b\u53ef\u9760\u6027\u95ee\u9898, \u56e0\u6b64\u5728\u4f7f\u7528\u65f6\u9700\u8981\u7279\u522b\u6ce8\u610f\u5176\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027.<\/p>\n<p>\u603b\u7ed3\u6765\u8bf4, \u5728\u6e38\u620f\u5f00\u53d1\u4e2d\u9009\u62e9\u54ea\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u53d6\u51b3\u4e8e\u5177\u4f53\u7684\u9700\u6c42\u548c\u573a\u666f. \u8fed\u4ee3\u5668\u6a21\u5f0f\u9002\u5408\u9700\u8981\u7edf\u4e00\u904d\u5386\u65b9\u5f0f\u7684\u573a\u666f; \u89c2\u5bdf\u8005\u6a21\u5f0f\u9002\u5408\u9700\u8981\u9ad8\u6a21\u5757\u5316\u548c\u4f4e\u8026\u5408\u5ea6\u7684\u573a\u666f; \u800c\u72b6\u6001\u6a21\u5f0f\u5219\u9002\u5408\u9700\u8981\u7ba1\u7406\u590d\u6742\u72b6\u6001\u8f6c\u6362\u7684\u573a\u666f.<\/p>\n<p>\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<br \/>\n\u7248\u6743\u58f0\u660e\uff1a\u672c\u5c0f\u8282\u5185\u5bb9\u6765\u6e90\u4e8eCSDN\u535a\u4e3b\u300c\u6570\u5b66\u5c0f\u5e08Yq\u300d\u7684\u539f\u521b\u6587\u7ae0\uff0c\u9075\u5faaCC 4.0 BY-SA\u7248\u6743\u534f\u8bae\uff0c\u8f6c\u8f7d\u8bf7\u9644\u4e0a\u539f\u6587\u51fa\u5904\u94fe\u63a5\u53ca\u672c\u58f0\u660e\u3002<br \/>\n\u539f\u6587\u94fe\u63a5\uff1ahttps:\/\/blog.csdn.net\/2302_80644606\/article\/details\/141462740<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53c2\u8003\u6750\u6599 1. \u3010UE4 \u8bbe\u8ba1\u6a21\u5f0f\u3011\u7b56\u7565\u6a21\u5f0f Strategy Pattern 3. \u8fed\u4ee3\u5668\u6a21\u5f0f 3. \u6e38\u620f\u5f00 &hellip; <a href=\"https:\/\/www.caiqinyi.cn\/index.php\/2025\/09\/05\/ue5_design_pattern_iterator_pattern\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">[UE5 \u8bbe\u8ba1\u6a21\u5f0f] \u8fed\u4ee3\u5668\u6a21\u5f0fIterator Pattern<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,32],"tags":[],"_links":{"self":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts\/4413"}],"collection":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/comments?post=4413"}],"version-history":[{"count":9,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts\/4413\/revisions"}],"predecessor-version":[{"id":4424,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/posts\/4413\/revisions\/4424"}],"wp:attachment":[{"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/media?parent=4413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/categories?post=4413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.caiqinyi.cn\/index.php\/wp-json\/wp\/v2\/tags?post=4413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}