{"id":1107,"date":"2026-03-30T09:12:57","date_gmt":"2026-03-30T09:12:57","guid":{"rendered":"https:\/\/www.method-post.com\/tw\/troubleshooting-class-diagram-relationships\/"},"modified":"2026-03-30T09:12:57","modified_gmt":"2026-03-30T09:12:57","slug":"troubleshooting-class-diagram-relationships","status":"publish","type":"post","link":"https:\/\/www.method-post.com\/tw\/troubleshooting-class-diagram-relationships\/","title":{"rendered":"\u8a3a\u65b7\u60a8\u7684\u985e\u5225\u5716\uff1a\u70ba\u4f55\u60a8\u7684\u95dc\u4fc2\u51fa\u73fe\u554f\u984c\u4ee5\u53ca\u5982\u4f55\u4fee\u6b63"},"content":{"rendered":"<p>\u8a2d\u8a08\u7a69\u5065\u7684\u8edf\u9ad4\u67b6\u69cb\uff0c\u59cb\u65bc\u6e05\u6670\u3002\u7576\u7cfb\u7d71\u85cd\u5716\u6a21\u7a1c\u5169\u53ef\u6642\uff0c\u6240\u7522\u751f\u7684\u7a0b\u5f0f\u78bc\u5f80\u5f80\u9762\u81e8\u7dca\u5bc6\u8026\u5408\u3001\u7dad\u8b77\u5669\u5922\u8207\u908f\u8f2f\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u985e\u5225\u5716\u4e0d\u50c5\u50c5\u662f\u7e6a\u5716\u7df4\u7fd2\uff0c\u66f4\u662f\u4e00\u7a2e\u6e9d\u901a\u5de5\u5177\uff0c\u7528\u4ee5\u5b9a\u7fa9\u7269\u4ef6\u4e4b\u9593\u5982\u4f55\u4e92\u52d5\u3001\u7e7c\u627f\u8207\u76f8\u4e92\u4f9d\u8cf4\u3002\u7136\u800c\uff0c\u8a31\u591a\u958b\u767c\u4eba\u54e1\u767c\u73fe\u81ea\u5df1\u9762\u5c0d\u7684\u5716\u8868\u4e2d\uff0c\u95dc\u4fc2\u4f3c\u4e4e\u8207\u5be6\u969b\u5be6\u4f5c\u76f8\u4e92\u77db\u76fe\u3002<\/p>\n<p>\u672c\u6307\u5357\u91dd\u5c0d UML \u985e\u5225\u6a21\u578b\u4e2d\u6700\u5e38\u898b\u7684\u7d50\u69cb\u6027\u5931\u6557\u9032\u884c\u63a2\u8a0e\u3002\u6211\u5011\u5c07\u8d85\u8d8a\u8868\u9762\u7684\u7f8e\u5b78\u5c64\u9762\uff0c\u6df1\u5165\u6aa2\u8996\u6bcf\u4e00\u689d\u7dda\u8207\u7bad\u982d\u80cc\u5f8c\u7684\u908f\u8f2f\u3001\u57fa\u6578\u8207\u8a9e\u7fa9\u610f\u7fa9\u3002\u900f\u904e\u65e9\u671f\u8b58\u5225\u9019\u4e9b\u6a21\u5f0f\uff0c\u53ef\u78ba\u4fdd\u60a8\u7684\u8a2d\u8a08\u5728\u6574\u500b\u958b\u767c\u9031\u671f\u4e2d\u4fdd\u6301\u53ef\u64f4\u5c55\u6027\u8207\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Marker-style infographic illustrating UML class diagram troubleshooting: shows five core relationship types (association, aggregation, composition, inheritance, dependency) with notation symbols, highlights three common pitfalls (inheritance vs composition confusion, circular dependencies, ambiguous multiplicity), presents a 3-step troubleshooting workflow, and includes a validation checklist for software architects and developers\" decoding=\"async\" src=\"https:\/\/www.method-post.com\/wp-content\/uploads\/2026\/03\/class-diagram-troubleshooting-infographic-marker-illustration.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83e\udde9 \u7406\u89e3\u6838\u5fc3\u95dc\u4fc2\u985e\u578b<\/h2>\n<p>\u5728\u9032\u884c\u8a3a\u65b7\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u7406\u89e3\u985e\u5225\u95dc\u4fc2\u7684\u6a19\u6e96\u8853\u8a9e\u3002\u7576\u8853\u8a9e\u88ab\u6df7\u7528\uff0c\u6216\u8996\u89ba\u7b26\u865f\u8207\u9810\u671f\u8a9e\u7fa9\u4e0d\u7b26\u6642\uff0c\u5e38\u6703\u7522\u751f\u6df7\u6dc6\u3002\u4ee5\u4e0b\u662f\u60a8\u5c07\u6703\u9047\u5230\u7684\u4e3b\u8981\u95dc\u4fc2\u985e\u578b\u8aaa\u660e\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u95dc\u4fc2\u985e\u578b<\/th>\n<th>\u7b26\u865f\u8868\u793a<\/th>\n<th>\u8a9e\u7fa9\u610f\u7fa9<\/th>\n<th>\u5178\u578b\u4f7f\u7528\u60c5\u5883<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u95dc\u806f<\/td>\n<td>\u76f4\u7dda<\/td>\n<td>\u5169\u500b\u985e\u5225\u4e4b\u9593\u7684\u7d50\u69cb\u6027\u9023\u7d50\u3002<\/td>\n<td>\u5ba2\u6236\u4e0b\u8a02\u55ae\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u805a\u5408<\/td>\n<td>\u7a7a\u5fc3\u83f1\u5f62<\/td>\n<td>\u6574\u9ad4-\u90e8\u5206\u95dc\u4fc2\uff0c\u5176\u4e2d\u90e8\u5206\u53ef\u7368\u7acb\u5b58\u5728\u3002<\/td>\n<td>\u90e8\u9580\u64c1\u6709\u54e1\u5de5\uff08\u54e1\u5de5\u53ef\u96e2\u958b\u90e8\u9580\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u7d44\u5408<\/td>\n<td>\u5be6\u5fc3\u83f1\u5f62<\/td>\n<td>\u5f37\u70c8\u7684\u6574\u9ad4-\u90e8\u5206\u95dc\u4fc2\uff1b\u90e8\u5206\u7121\u6cd5\u5728\u6c92\u6709\u6574\u9ad4\u7684\u60c5\u6cc1\u4e0b\u5b58\u5728\u3002<\/td>\n<td>\u623f\u5c4b\u64c1\u6709\u623f\u9593\uff08\u82e5\u623f\u5c4b\u88ab\u62c6\u9664\uff0c\u623f\u9593\u4ea6\u4e0d\u5fa9\u5b58\u5728\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u7e7c\u627f<\/td>\n<td>\u5e36\u7a7a\u5fc3\u4e09\u89d2\u5f62\u7684\u76f4\u7dda<\/td>\n<td>\u300c\u662f-\u4e00\u7a2e\u300d\u95dc\u4fc2\u3002\u7236\u985e\u63d0\u4f9b\u5171\u901a\u7d50\u69cb\u3002<\/td>\n<td>\u6c7d\u8eca\u662f\u4e00\u7a2e\u8eca\u8f1b\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u4f9d\u8cf4<\/td>\n<td>\u865b\u7dda\u52a0\u7bad\u982d<\/td>\n<td>\u4f7f\u7528\u95dc\u4fc2\u3002\u4e00\u500b\u985e\u5225\u66ab\u6642\u4f7f\u7528\u53e6\u4e00\u500b\u985e\u5225\u3002<\/td>\n<td>\u5831\u8868\u7522\u751f\u5668\u4f7f\u7528\u8cc7\u6599\u5eab\u9023\u63a5\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\ud83d\udd0d \u95dc\u4fc2\u5efa\u6a21\u4e2d\u7684\u5e38\u898b\u9677\u9631<\/h2>\n<p>\u7576\u4e00\u500b\u5716\u8868\u5931\u6557\u6642\uff0c\u901a\u5e38\u6e90\u65bc\u8996\u89ba\u5448\u73fe\u8207\u7cfb\u7d71\u908f\u8f2f\u73fe\u5be6\u4e4b\u9593\u7684\u812b\u7bc0\u3002\u4ee5\u4e0b\u662f\u95dc\u4fc2\u5d29\u6f70\u7684\u5177\u9ad4\u60c5\u5883\u3002<\/p>\n<h3>1. \u7e7c\u627f\u8207\u7d44\u5408\u7684\u6df7\u6dc6<\/h3>\n<p>\u9019\u53ef\u80fd\u662f\u7269\u4ef6\u5c0e\u5411\u8a2d\u8a08\u4e2d\u6700\u5e38\u898b\u7684\u932f\u8aa4\u3002\u958b\u767c\u4eba\u54e1\u7d93\u5e38\u5728\u61c9\u8a72\u4f7f\u7528\u7d44\u5408\u6642\u9078\u64c7\u7e7c\u627f\uff0c\u53cd\u4e4b\u4ea6\u7136\u3002\u9019\u500b\u9078\u64c7\u6c7a\u5b9a\u4e86\u985e\u5225\u7684\u751f\u547d\u9031\u671f\u7ba1\u7406\u8207\u8026\u5408\u7a0b\u5ea6\u3002<\/p>\n<ul>\n<li><strong>\u75c7\u72c0\uff1a<\/strong> \u4f60\u6709\u4e00\u500b <code>\u7ffc\u7345<\/code> \u985e\u5225\uff0c\u5b83\u7e7c\u627f\u81ea <code>\u52d5\u7269<\/code> \u548c <code>\u6a5f\u5668<\/code>\u3002\u9019\u6703\u9020\u6210\u947d\u77f3\u7e7c\u627f\u554f\u984c\u6216\u908f\u8f2f\u77db\u76fe\uff08\u7345\u5b50\u662f\u6a5f\u5668\u55ce\uff1f\uff09<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong>\u8207\u7236\u985e\u5225\u7dca\u5bc6\u8026\u5408\uff0c\u91cd\u69cb\u6642\u8106\u5f31\uff0c\u4e26\u9055\u53cd\u91cc\u6c0f\u66ff\u63db\u539f\u5247\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6cd5\uff1a<\/strong> \u8acb\u554f\u81ea\u5df1\uff1a\u300c\u9019\u662f\u5426\u70ba\u4e00\u500b <em>\u662f-\u4e00\u500b<\/em>\u95dc\u4fc2\uff1f\u300d\u5982\u679c\u4e00\u500b <code>\u6c7d\u8eca<\/code> \u5728\u6bcf\u7a2e\u60c5\u5883\u4e0b\u90fd\u4e0d\u662f\u56b4\u683c\u610f\u7fa9\u4e0a\u7684 <code>\u8eca\u8f1b<\/code>\uff0c\u8acb\u8003\u616e\u4f7f\u7528\u7d44\u5408\u3002\u5982\u679c\u4e00\u500b <code>\u6c7d\u8eca<\/code> \u64c1\u6709\u4e00\u500b <code>\u5f15\u64ce<\/code>\uff0c\u90a3\u9ebc\u5f15\u64ce\u662f\u5176\u4e2d\u4e00\u90e8\u5206\uff0c\u800c\u975e\u7236\u985e\u5225\u3002\u5c0d\u65bc\u300c\u64c1\u6709-\u4e00\u500b\u300d\u7684\u95dc\u4fc2\uff0c\u61c9\u4f7f\u7528\u7d44\u5408\u3002<\/li>\n<\/ul>\n<h3>2. \u9806\u74b0\u4f9d\u8cf4<\/h3>\n<p>\u4f9d\u8cf4\u95dc\u4fc2\u61c9\u55ae\u5411\u6d41\u52d5\u3002\u7576\u985e\u5225 A \u4f9d\u8cf4\u985e\u5225 B\uff0c\u800c\u985e\u5225 B \u53c8\u4f9d\u8cf4\u985e\u5225 A \u6642\uff0c\u5c31\u6703\u7522\u751f\u5faa\u74b0\u5f15\u7528\u3002\u9019\u901a\u5e38\u6703\u5c0e\u81f4\u521d\u59cb\u5316\u932f\u8aa4\uff0c\u6216\u9700\u8981\u8907\u96dc\u7684\u4f9d\u8cf4\u6ce8\u5165\u6a21\u5f0f\uff0c\u50c5\u70ba\u89e3\u6c7a\u555f\u52d5\u904e\u7a0b\u3002<\/p>\n<ul>\n<li><strong>\u75c7\u72c0\uff1a<\/strong> \u4f60\u7684\u4f9d\u8cf4\u5716\u4e2d\u5b58\u5728\u4e00\u500b\u8ff4\u5708\u3002\u4f60\u7121\u6cd5\u5728\u6c92\u6709 B \u7684\u60c5\u6cc1\u4e0b\u5be6\u4f8b\u5316 A\uff0c\u4e5f\u7121\u6cd5\u5728\u6c92\u6709 A \u7684\u60c5\u6cc1\u4e0b\u5be6\u4f8b\u5316 B\u3002<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u6a21\u7d44\u5316\u7a0b\u5ea6\u964d\u4f4e\uff0c\u55ae\u5143\u6e2c\u8a66\u56f0\u96e3\uff0c\u4ee5\u53ca\u5728\u5efa\u7acb\u7269\u4ef6\u6642\u53ef\u80fd\u7522\u751f\u5806\u758a\u6ea2\u4f4d\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4fee\u6b63\u65b9\u6cd5\uff1a<\/strong> \u5c07\u5171\u7528\u7684\u908f\u8f2f\u63d0\u53d6\u5230\u7b2c\u4e09\u500b\u7368\u7acb\u7684\u985e\u5225\uff08\u4ecb\u9762\u6216\u62bd\u8c61\u57fa\u985e\uff09\u4e2d\u3002A \u548c B \u90fd\u61c9\u4f9d\u8cf4\u9019\u500b\u65b0\u7684\u62bd\u8c61\u5c64\uff0c\u5f9e\u800c\u6253\u7834\u5b83\u5011\u4e4b\u9593\u7684\u76f4\u63a5\u9023\u7d50\u3002\u6216\u8005\uff0c\u5f15\u5165\u4e00\u500b\u4e2d\u4ecb\u670d\u52d9\u4f86\u7ba1\u7406\u4e92\u52d5\u3002<\/li>\n<\/ul>\n<h3>3. \u591a\u91cd\u6027\u4e0d\u660e\u78ba<\/h3>\n<p>\u591a\u91cd\u6027\u5b9a\u7fa9\u4e86\u4e00\u500b\u985e\u5225\u7684\u5be6\u4f8b\u8207\u53e6\u4e00\u500b\u985e\u5225\u7684\u5be6\u4f8b\u4e4b\u9593\u7684\u95dc\u806f\u6578\u91cf\u3002\u82e5\u7f3a\u5c11\u6b64\u7d30\u7bc0\uff0c\u5c07\u4f7f\u8a72\u5716\u8868\u5c0d\u5be6\u4f5c\u6beb\u7121\u7528\u8655\u3002<\/p>\n<ul>\n<li><strong>\u75c7\u72c0\uff1a<\/strong> \u5b58\u5728\u95dc\u806f\u7dda\uff0c\u4f46\u672a\u6a19\u793a\u6578\u5b57\uff08\u4f8b\u5982\uff0c<code>1<\/code>, <code>0..1<\/code>, <code>*<\/code>).<\/li>\n<li><strong>\u5f71\u97ff\uff1a<\/strong> \u958b\u767c\u4eba\u54e1\u6703\u505a\u51fa\u5047\u8a2d\u3002\u6709\u4eba\u53ef\u80fd\u4f7f\u7528\u55ae\u4e00\u53c3\u8003\uff0c\u800c\u53e6\u4e00\u4eba\u5247\u5be6\u4f5c\u70ba\u6e05\u55ae\u3002\u9019\u5c07\u5c0e\u81f4\u8cc7\u6599\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u4fee\u6b63\u65b9\u6cd5\uff1a<\/strong> \u660e\u78ba\u5b9a\u7fa9\u57fa\u6578\u3002\u4f7f\u7528 <code>1<\/code> \u8868\u793a\u6070\u597d\u4e00\u500b\uff0c<code>0..1<\/code> \u8868\u793a\u53ef\u9078\uff0c\u4ee5\u53ca <code>*<\/code> \u6216 <code>0..*<\/code> \u8868\u793a\u591a\u500b\u3002\u78ba\u4fdd\u95dc\u806f\u7684\u5169\u7aef\u90fd\u6b63\u78ba\u6a19\u793a\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udd27 \u9010\u6b65\u6545\u969c\u6392\u9664\u5de5\u4f5c\u6d41\u7a0b<\/h2>\n<p>\u7576\u4f60\u7684\u5716\u8868\u8207\u7a0b\u5f0f\u78bc\u4e0d\u7b26\uff0c\u6216\u8a2d\u8a08\u611f\u89ba\u300c\u4e0d\u5c0d\u52c1\u300d\u6642\uff0c\u8acb\u9075\u5faa\u6b64\u7d50\u69cb\u5316\u65b9\u6cd5\u4f86\u8b58\u5225\u4e26\u89e3\u6c7a\u554f\u984c\u3002<\/p>\n<h3>\u6b65\u9a5f 1\uff1a\u78ba\u8a8d\u65b9\u5411\u6027<\/h3>\n<p>\u7bad\u982d\u8868\u793a\u4f9d\u8cf4\u7684\u65b9\u5411\u3002\u5982\u679c\u4f60\u6709\u4e00\u500b\u4ecb\u65bc <code>\u4f7f\u7528\u8005<\/code> \u548c <code>\u500b\u4eba\u6a94\u6848<\/code>\uff0c\u8ab0\u77e5\u9053\u8ab0\uff1f<\/p>\n<ul>\n<li>\u9019\u500b <code>\u4f7f\u7528\u8005<\/code>\u7269\u4ef6\u662f\u5426\u6301\u6709\u5c0d <code>\u500b\u4eba\u6a94\u6848<\/code>?<\/li>\n<li>\u9019\u500b <code>\u500b\u4eba\u6a94\u6848<\/code>\u7269\u4ef6\u662f\u5426\u6301\u6709\u5c0d <code>\u4f7f\u7528\u8005<\/code>?<\/li>\n<\/ul>\n<p>\u5982\u679c\u5169\u8005\u7686\u70ba\u771f\uff0c\u5247\u9700\u8981\u5efa\u7acb\u96d9\u5411\u95dc\u806f\u3002\u82e5\u50c5\u6709\u4e00\u8005\u70ba\u771f\uff0c\u8acb\u78ba\u4fdd\u7bad\u982d\u5f9e\u4f9d\u8cf4\u985e\u5225\u6307\u5411\u5df2\u77e5\u985e\u5225\u3002\u901a\u5e38\u5716\u793a\u6703\u7121\u7406\u7531\u5730\u986f\u793a\u96d9\u5411\u7bad\u982d\uff0c\u9020\u6210\u8996\u89ba\u6df7\u4e82\u3002<\/p>\n<h3>\u6b65\u9a5f 2\uff1a\u5be9\u67e5\u53ef\u898b\u6027\u4fee\u98fe\u7b26<\/h3>\n<p>\u96d6\u7136\u53ef\u898b\u6027\uff08public\u3001private\u3001protected\uff09\u5728\u9ad8\u968e\u5716\u793a\u4e2d\u7d93\u5e38\u88ab\u7701\u7565\uff0c\u4f46\u5c0d\u65bc\u6392\u9664\u5be6\u4f5c\u5931\u6557\u554f\u984c\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u95dc\u806f\u610f\u5473\u8457\u4e92\u52d5\uff0c\u5247\u8a72\u5c6c\u6027\u5fc5\u9808\u53ef\u5b58\u53d6\u3002<\/p>\n<ul>\n<li>\u6aa2\u67e5\u95dc\u806f\u662f\u5426\u6697\u793a\u65b9\u6cd5\u547c\u53eb\u3002\u8a72\u65b9\u6cd5\u662f\u5426\u70ba <code>\u516c\u958b<\/code>?<\/li>\n<li>\u6aa2\u67e5\u95dc\u806f\u662f\u5426\u6697\u793a\u6b04\u4f4d\u5b58\u53d6\u3002\u8a72\u6b04\u4f4d\u662f\u5426\u70ba <code>\u79c1\u6709<\/code>?<\/li>\n<\/ul>\n<p>\u5982\u679c\u5716\u793a\u6697\u793a\u5c0d\u79c1\u6709\u6b04\u4f4d\u7684\u76f4\u63a5\u5b58\u53d6\uff0c\u5247\u8a2d\u8a08\u6709\u7f3a\u9677\u3002\u61c9\u91cd\u69cb\u70ba\u4f7f\u7528\u5b58\u53d6\u5668\u6216\u4ecb\u9762\u65b9\u6cd5\u3002<\/p>\n<h3>\u6b65\u9a5f 3\uff1a\u6aa2\u8996\u751f\u547d\u9031\u671f\u9650\u5236<\/h3>\n<p>\u805a\u5408\u8207\u7d44\u5408\u7d93\u5e38\u88ab\u6df7\u6dc6\uff0c\u56e0\u70ba\u5169\u8005\u770b\u8d77\u4f86\u90fd\u50cf\u662f\u300c\u90e8\u5206-\u6574\u9ad4\u300d\u95dc\u4fc2\u3002\u5dee\u5225\u5728\u65bc\u751f\u547d\u9031\u671f\u7684\u7ba1\u7406\u65b9\u5f0f\u3002<\/p>\n<ul>\n<li><strong>\u7d44\u5408\uff1a<\/strong> \u82e5\u7236\u7269\u4ef6\u88ab\u92b7\u6bc0\uff0c\u5b50\u7269\u4ef6\u4e5f\u6703\u88ab\u92b7\u6bc0\u3002\uff08\u5be6\u5fc3\u83f1\u5f62\uff09\u3002<\/li>\n<li><strong>\u805a\u5408\uff1a<\/strong> \u5b50\u7269\u4ef6\u53ef\u4ee5\u7368\u7acb\u5b58\u5728\u3002\uff08\u7a7a\u5fc3\u83f1\u5f62\uff09\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f60\u7684\u5716\u793a\u986f\u793a\u5be6\u5fc3\u83f1\u5f62\uff0c\u4f46\u7a0b\u5f0f\u78bc\u5141\u8a31\u5b50\u7269\u4ef6\u88ab\u591a\u500b\u7236\u7269\u4ef6\u5171\u7528\uff0c\u5247\u4f60\u932f\u8aa4\u5730\u5efa\u6a21\u4e86\u7d44\u5408\u3002\u9019\u5c07\u5c0e\u81f4\u8a18\u61b6\u9ad4\u6d29\u6f0f\u6216\u610f\u5916\u7684\u8cc7\u6599\u907a\u5931\u3002<\/p>\n<h2>\ud83d\udcc9 \u6df1\u5165\u63a2\u8a0e\uff1a\u95dc\u806f\u8207\u57fa\u6578<\/h2>\n<p>\u95dc\u806f\u662f\u985e\u5716\u7684\u9aa8\u5e79\u3002\u5b83\u5011\u5b9a\u7fa9\u4e86\u7d50\u69cb\u6027\u9023\u7d50\u3002\u8a3a\u65b7\u95dc\u806f\u554f\u984c\u9700\u8981\u5c08\u6ce8\u65bc\u8cc7\u6599\u4e0a\u6240\u65bd\u52a0\u7684\u7d04\u675f\u3002<\/p>\n<h3>\u591a\u5c0d\u591a\u95dc\u4fc2<\/h3>\n<p>\u5728\u95dc\u806f\u8cc7\u6599\u5eab\u6216\u7269\u4ef6\u5716\u4e2d\u76f4\u63a5\u5efa\u6a21\u591a\u5c0d\u591a\u95dc\u4fc2\uff08\u4f8b\u5982\uff1a\u5b78\u751f\u8207\u8ab2\u7a0b\uff09\u901a\u5e38\u9700\u8981\u4e00\u500b\u4e2d\u7e7c\u985e\u5225\u3002\u5728\u985e\u5716\u4e2d\uff0c\u9019\u53ef\u80fd\u770b\u8d77\u4f86\u662f\u4e00\u689d\u76f4\u7dda\uff0c\u5169\u7aef\u7686\u6709<code>*<\/code>\u5728\u5169\u7aef\u3002\u7136\u800c\uff0c\u5728\u5be6\u4f5c\u6642\uff0c\u9019\u901a\u5e38\u9700\u8981\u4e00\u500b\u9023\u7d50\u5be6\u9ad4\u3002<\/p>\n<ul>\n<li><strong>\u554f\u984c\uff1a<\/strong>\u4f60\u7121\u6cd5\u5728\u7dda\u689d\u672c\u8eab\u5132\u5b58\u95dc\u65bc\u95dc\u4fc2\u7684\u5143\u8cc7\u6599\uff08\u4f8b\u5982\uff1a\u5b78\u751f\u8a3b\u518a\u8ab2\u7a0b\u7684\u65e5\u671f\uff09\u3002<\/li>\n<li><strong>\u89e3\u6c7a\u65b9\u6848\uff1a<\/strong>\u5f15\u5165\u95dc\u806f\u985e\u5225\u3002\u5efa\u7acb\u4e00\u500b\u65b0\u985e\u5225\uff08\u4f8b\u5982\uff1a<code>\u8a3b\u518a<\/code>\uff09\uff0c\u7528\u4ee5\u9023\u7d50<code>\u5b78\u751f<\/code>\u8207<code>\u8ab2\u7a0b<\/code>\u3002\u6b64\u985e\u5225\u5132\u5b58\u95dc\u4fc2\u7684\u7279\u5b9a\u5c6c\u6027\u3002<\/li>\n<\/ul>\n<h3>\u53ef\u9078\u8207\u5f37\u5236\u9023\u7d50<\/h3>\n<p>\u5c0d\u5f37\u5236\u6027\uff081\uff09\u8207\u53ef\u9078\u6027\uff080..1\uff09\u95dc\u4fc2\u7684\u6df7\u6dc6\u6703\u5c0e\u81f4\u9a57\u8b49\u932f\u8aa4\u3002<\/p>\n<ul>\n<li><strong>\u60c5\u5883\uff1a<\/strong>\u4e00\u500b<code>\u9280\u884c\u5e33\u6236<\/code>\u8207\u4e00\u500b<code>\u5ba2\u6236<\/code>.<\/li>\n<li><strong>\u554f\u984c\uff1a<\/strong>\u5ba2\u6236\u53ef\u4ee5\u6c92\u6709\u5e33\u6236\u800c\u5b58\u5728\u55ce\uff1f<\/li>\n<li><strong>\u8a2d\u8a08\uff1a<\/strong>\u5982\u679c\u53ef\u4ee5\uff0c\u5f9e\u5ba2\u6236\u5230\u5e33\u6236\u7684\u9023\u7d50\u662f<code>0..1<\/code>\u3002\u5982\u679c\u4e0d\u884c\uff0c\u5247\u662f<code>1<\/code>.<\/li>\n<\/ul>\n<p>\u932f\u8aa4\u5730\u5c07\u5fc5\u586b\u9023\u7d50\u6a19\u793a\u70ba\u53ef\u9078\uff0c\u6703\u5141\u8a31\u5728\u696d\u52d9\u908f\u8f2f\u8981\u6c42\u8cc7\u6599\u7684\u5730\u65b9\u51fa\u73fe\u7a7a\u503c\u3002\u932f\u8aa4\u5730\u5c07\u53ef\u9078\u9023\u7d50\u6a19\u793a\u70ba\u5fc5\u586b\uff0c\u6703\u5f37\u5236\u8f38\u5165\u53ef\u80fd\u7121\u6cd5\u53d6\u5f97\u7684\u8cc7\u6599\u3002<\/p>\n<h2>\ud83d\udd04 \u4f9d\u8cf4\u7ba1\u7406<\/h2>\n<p>\u4f9d\u8cf4\u95dc\u4fc2\u662f\u8b8a\u5316\u6700\u5287\u70c8\u7684\u95dc\u4fc2\u3002\u5b83\u4ee3\u8868\u4f7f\u7528\u95dc\u4fc2\uff0c\u800c\u975e\u64c1\u6709\u95dc\u4fc2\u3002\u5982\u679c B \u7684\u8b8a\u66f4\u53ef\u80fd\u9700\u8981 A \u4e5f\u9032\u884c\u8b8a\u66f4\uff0c\u5247\u985e\u5225 A \u4f9d\u8cf4\u65bc\u985e\u5225 B\u3002<\/p>\n<h3>\u4f9d\u8cf4\u53cd\u8f49\u539f\u5247<\/h3>\n<p>\u9ad8\u968e\u6a21\u7d44\u4e0d\u61c9\u4f9d\u8cf4\u4f4e\u968e\u6a21\u7d44\u3002\u5169\u8005\u90fd\u61c9\u4f9d\u8cf4\u62bd\u8c61\u3002\u5728\u6392\u932f\u6642\uff0c\u61c9\u6aa2\u67e5\u4f9d\u8cf4\u4e2d\u662f\u5426\u76f4\u63a5\u5be6\u4f8b\u5316\u5177\u9ad4\u985e\u5225\u3002<\/p>\n<ul>\n<li><strong>\u4e0d\u826f\u6a21\u5f0f\uff1a<\/strong> <code>\u5831\u8868\u7522\u751f\u5668<\/code> \u76f4\u63a5\u5be6\u4f8b\u5316 <code>MySQL \u9023\u63a5<\/code> \u76f4\u63a5\u3002<\/li>\n<li><strong>\u826f\u597d\u6a21\u5f0f\uff1a<\/strong> <code>\u5831\u8868\u7522\u751f\u5668<\/code> \u4f9d\u8cf4\u4e00\u500b\u4ecb\u9762 <code>\u8cc7\u6599\u5eab\u9023\u63a5<\/code>.<\/li>\n<\/ul>\n<p>\u5982\u679c\u60a8\u7684\u5716\u8868\u986f\u793a\u5f9e\u9ad8\u968e\u985e\u5225\u5230\u7279\u5b9a\u5be6\u4f5c\u985e\u5225\u7684\u865b\u7dda\uff0c\u5247\u61c9\u8003\u616e\u6539\u7528\u4ecb\u9762\u91cd\u69cb\u3002\u9019\u80fd\u964d\u4f4e\u8026\u5408\u5ea6\uff0c\u4e26\u4f7f\u5716\u8868\u66f4\u80fd\u9069\u61c9\u5e95\u5c64\u6280\u8853\u7684\u8b8a\u66f4\u3002<\/p>\n<h3>\u50b3\u905e\u4f9d\u8cf4<\/h3>\n<p>\u4e00\u500b\u5e38\u898b\u932f\u8aa4\u662f\u70ba\u9593\u63a5\u95dc\u4fc2\u7e6a\u88fd\u7dda\u689d\u3002\u5982\u679c\u985e\u5225 A \u4f7f\u7528\u985e\u5225 B\uff0c\u800c\u985e\u5225 B \u4f7f\u7528\u985e\u5225 C\uff0c\u5247\u4e0d\u9700\u8981\u5f9e A \u756b\u7dda\u5230 C\u3002<\/p>\n<ul>\n<li><strong>\u898f\u5247\uff1a<\/strong> \u50c5\u7e6a\u88fd\u76f4\u63a5\u4f9d\u8cf4\u3002<\/li>\n<li><strong>\u539f\u56e0\uff1a<\/strong> \u50b3\u905e\u4f9d\u8cf4\u6703\u4f7f\u5716\u8868\u6df7\u4e82\uff0c\u4e26\u6a21\u7cca\u8cac\u4efb\u908a\u754c\u7684\u5be6\u969b\u7bc4\u570d\u3002\u5b83\u6697\u793a A \u76f4\u63a5\u4e86\u89e3 C\uff0c\u4f46\u5be6\u969b\u4e0a\u4e26\u975e\u5982\u6b64\u3002<\/li>\n<\/ul>\n<h2>\ud83c\udfa8 \u8996\u89ba\u6e05\u6670\u5ea6\u8207\u7dad\u8b77<\/h2>\n<p>\u7121\u6cd5\u95b1\u8b80\u7684\u5716\u8868\u7b49\u540c\u65bc\u6c92\u6709\u5716\u8868\u3002\u5728\u6392\u932f\u6642\uff0c\u61c9\u5c07\u8996\u89ba\u4f48\u5c40\u8996\u70ba\u9664\u932f\u5de5\u5177\u3002<\/p>\n<h3>\u4ea4\u53c9\u7dda\u689d<\/h3>\n<p>\u7576\u95dc\u4fc2\u7dda\u689d\u5728\u6c92\u6709\u7bc0\u9ede\u7684\u60c5\u6cc1\u4e0b\u5f7c\u6b64\u4ea4\u53c9\u6642\uff0c\u8868\u793a\u5169\u8005\u4e4b\u9593\u4e0d\u5b58\u5728\u95dc\u4fc2\u3002\u7136\u800c\uff0c\u9019\u6703\u7522\u751f\u8996\u89ba\u5e72\u64fe\u3002<\/p>\n<ul>\n<li><strong>\u7b56\u7565\uff1a<\/strong> \u4f7f\u7528\u300c\u6b63\u4ea4\u8def\u7531\u300d\u98a8\u683c\uff08\u50c5\u6c34\u5e73\u6216\u5782\u76f4\u79fb\u52d5\u7684\u7dda\u689d\uff09\u4ee5\u6e1b\u5c11\u4ea4\u53c9\u3002<\/li>\n<li><strong>\u7b56\u7565\uff1a<\/strong> \u5982\u679c\u7dda\u689d\u5fc5\u9808\u4ea4\u53c9\uff0c\u8acb\u78ba\u4fdd\u5b83\u5011\u8207\u5be6\u969b\u7684\u4ea4\u9ede\u660e\u986f\u5340\u5206\uff08\u901a\u5e38\u8868\u793a\u4e09\u5143\u95dc\u4fc2\u6216\u5c0e\u822a\u8def\u5f91\uff09\u3002<\/li>\n<\/ul>\n<h3>\u5206\u7d44\u8207\u5957\u4ef6<\/h3>\n<p>\u96a8\u8457\u7cfb\u7d71\u7684\u64f4\u5927\uff0c\u55ae\u4e00\u5716\u8868\u6703\u8b8a\u5f97\u4ee4\u4eba\u96e3\u4ee5\u627f\u53d7\u3002\u5982\u679c\u7121\u6cd5\u5b9a\u4f4d\u7279\u5b9a\u985e\u5225\uff0c\u6392\u932f\u5c07\u8b8a\u5f97\u4e0d\u53ef\u80fd\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5957\u4ef6\uff1a<\/strong> \u5c07\u76f8\u95dc\u985e\u5225\u5206\u7d44\u70ba\u908f\u8f2f\u5957\u4ef6\uff08\u4f8b\u5982\uff0c<code>\u9818\u57df<\/code>, <code>\u670d\u52d9<\/code>, <code>\u57fa\u790e\u8a2d\u65bd<\/code>).<\/li>\n<li><strong>\u4f7f\u7528\u5b50\u5716\u8868\uff1a<\/strong> \u4e0d\u8981\u5728\u4e00\u500b\u8996\u5716\u4e2d\u986f\u793a\u6240\u6709\u7d30\u7bc0\u3002\u5efa\u7acb\u4e00\u500b\u9ad8\u968e\u6982\u89bd\u5716\u8868\uff0c\u4e26\u6df1\u5165\u7279\u5b9a\u5b50\u7cfb\u7d71\u4ee5\u5448\u73fe\u8a73\u7d30\u7684\u95dc\u4fc2\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udee0 \u91cd\u69cb\u7b56\u7565<\/h2>\n<p>\u4e00\u65e6\u8b58\u5225\u51fa\u554f\u984c\uff0c\u5c31\u5fc5\u9808\u61c9\u7528\u8207\u5716\u8868\u4e00\u81f4\u7684\u4fee\u5fa9\u63aa\u65bd\u3002\u4ee5\u4e0b\u662f\u89e3\u6c7a\u7d50\u69cb\u554f\u984c\u7684\u6a19\u6e96\u6a21\u5f0f\u3002<\/p>\n<h3>\u63d0\u53d6\u4ecb\u9762<\/h3>\n<p>\u5982\u679c\u4e00\u500b\u985e\u5225\u8207\u5176\u5be6\u4f5c\u904e\u65bc\u7dca\u5bc6\u8026\u5408\uff0c\u5247\u61c9\u63d0\u53d6\u4ecb\u9762\u3002\u66f4\u65b0\u5716\u8868\uff0c\u986f\u793a\u5c0d\u4ecb\u9762\u7684\u4f9d\u8cf4\uff0c\u800c\u975e\u5177\u9ad4\u985e\u5225\u3002\u9019\u80fd\u660e\u78ba\u8868\u9054\u5408\u7d04\uff0c\u800c\u975e\u5be6\u4f5c\u7d30\u7bc0\u3002<\/p>\n<h3>\u5f15\u5165\u5916\u89c0<\/h3>\n<p>\u5982\u679c\u4e00\u500b\u985e\u5225\u4f9d\u8cf4\u904e\u591a\uff0c\u5247\u7a31\u70ba\u300c\u4e0a\u5e1d\u985e\u5225\u300d\u3002\u5f15\u5165\u4e00\u500b\u5916\u89c0\u985e\u5225\u4ee5\u7c21\u5316\u4ecb\u9762\u3002\u66f4\u65b0\u5716\u8868\uff0c\u986f\u793a\u5916\u89c0\u4f5c\u70ba\u8907\u96dc\u5b50\u7cfb\u7d71\u7684\u4e3b\u8981\u5ba2\u6236\uff0c\u96b1\u85cf\u5167\u90e8\u8907\u96dc\u6027\u3002<\/p>\n<h3>\u5206\u5272\u8cac\u4efb<\/h3>\n<p>\u5982\u679c\u4e00\u500b\u985e\u5225\u8ca0\u8cac\u904e\u591a\u7684\u95dc\u4fc2\uff0c\u5247\u9055\u53cd\u4e86\u55ae\u4e00\u8cac\u4efb\u539f\u5247\u3002\u5c07\u8a72\u985e\u5225\u62c6\u5206\u70ba\u5169\u500b\u6216\u591a\u500b\u3002\u66f4\u65b0\u5716\u8868\u4ee5\u986f\u793a\u65b0\u985e\u5225\uff0c\u4e26\u91cd\u65b0\u5206\u914d\u95dc\u4fc2\u3002\u9019\u901a\u5e38\u80fd\u81ea\u7136\u89e3\u6c7a\u5faa\u74b0\u4f9d\u8cf4\u554f\u984c\u3002<\/p>\n<h2>\ud83d\udcdd 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