\u5728\u672c\u5730\u4ee5 Debug \u6a21\u5f0f\u542f\u52a8\u9879\u76ee\u7684\u65f6\u5019\uff0c\u5343\u4e07\u4e0d\u8981\u5728\u65b9\u6cd5\u4e0a\u6253\u65ad\u70b9\uff01\u5343\u4e07\u4e0d\u8981\uff01<\/p><\/blockquote>\n
<\/p>\n
\u9996\u5148\u4ec0\u4e48\u662f\u65b9\u6cd5\u65ad\u70b9\u5462\uff1f<\/p>\n
\u6bd4\u5982\u8fd9\u6837\u7684\uff0c\u6253\u5728\u65b9\u6cd5\u540d\u8fd9\u4e00\u884c\u7684\u65ad\u70b9\uff1a<\/p>\n
<\/p>\n
\u4f60\u70b9\u51fb IDEA \u91cc\u9762\u7684\u4e0b\u9762\u8fd9\u4e2a\u56fe\u6807\uff0cView Breakpoints\uff0c\u5b83\u4f1a\u7ed9\u4f60\u5f39\u51fa\u4e00\u4e2a\u6846\u3002<\/p>\n
\u8fd9\u4e2a\u5f39\u6846\u91cc\u9762\u5c55\u793a\u7684\u5c31\u662f\u5f53\u524d\u9879\u76ee\u91cc\u9762\u6240\u6709\u7684\u65ad\u70b9\uff0c\u5176\u4e2d\u6709\u4e00\u4e2a\u590d\u9009\u6846\uff0cJava Method Breakpoints\uff0c\u5c31\u662f\u5f53\u524d\u9879\u76ee\u91cc\u9762\u6240\u6709\u7684\u201c\u65b9\u6cd5\u65ad\u70b9\u201d\uff1a<\/p>\n
<\/p>\n
\u90a3\u4e48\u8fd9\u4e2a\u73a9\u610f\u5230\u5e95\u6709\u4ec0\u4e48\u5751\u5462\uff1f<\/p>\n
\u5f53\u9879\u76ee\u4ee5 Debug \u6a21\u5f0f\u542f\u52a8\u7684\u65f6\u5019<\/strong>\uff0c\u975e\u5e38\u975e\u5e38\u975e\u5e38\u4e25\u91cd\u7684\u62d6\u6162\u542f\u52a8\u901f\u5ea6\u3002<\/p>\n \u7ed9\u4f60\u770b\u4e24\u4e2a\u622a\u56fe\u3002<\/p>\n \u4e0b\u9762\u8fd9\u4e2a\u662f\u6211\u672c\u5730\u7684\u4e00\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u9879\u76ee\uff0c\u6ca1\u6709\u65b9\u6cd5\u65ad\u70b9\u7684\u65f6\u5019\uff0c\u53ea\u8981 1.753 \u79d2\u5c31\u542f\u52a8\u5b8c\u6210\u4e86\uff1a<\/p>\n \u4f46\u662f\u5f53\u6211\u52a0\u4e0a\u4e00\u4e2a\u65b9\u6cd5\u65ad\u70b9\u7684\u65f6\u5019\uff0c\u542f\u52a8\u65f6\u95f4\u76f4\u63a5\u6765\u5230\u4e86 35.035 \u79d2\uff1a<\/p>\n \u4ece 1.7 \u79d2\u76f4\u63a5\u98d9\u5347\u5230 35 \u79d2\uff0c\u542f\u52a8\u65f6\u95f4\u6da8\u5e45 2000%\u3002<\/p>\n \u4f60\u8bf4\u906d\u4e0d\u906d\u5f97\u4f4f\uff1f<\/p>\n \u906d\u4e0d\u4f4f\uff0c\u5bf9\u4e0d\u5bf9\u3002<\/p>\n \u90a3\u4e48\u6211\u662f\u600e\u4e48\u8e29\u5230\u8fd9\u4e2a\u5751\u7684\u5462\uff1f<\/p>\n \u4e00\u4e2a\u540c\u4e8b\u8bf4\u4ed6\u9879\u76ee\u91cc\u9762\u9047\u5230\u4e00\u4e2a\u532a\u5937\u6240\u601d\u7684 BUG\uff0c\u60f3\u8ba9\u6211\u5e2e\u5fd9\u4e00\u8d77\u770b\u770b\u3002<\/p>\n \u4e8e\u662f\u6211\u5148\u628a\u9879\u76ee\u62c9\u4e86\u4e0b\u6765\uff0c\u7136\u540e\u7b80\u5355\u7684\u770b\u4e86\u4e00\u4e0b\u4ee3\u7801\uff0c\u51c6\u5907\u628a\u9879\u76ee\u5148\u5728\u672c\u5730\u8dd1\u8d77\u6765\u8c03\u8bd5\u4e00\u4e0b\u3002<\/p>\n \u7136\u800c\u534a\u4e2a\u5c0f\u65f6\u8fc7\u53bb\u4e86\uff0c\u9879\u76ee\u8fd8\u6ca1\u8d77\u6765\u3002\u6211\u95ee\u4ed6\uff1a\u8fd9\u4e2a\u9879\u76ee\u672c\u5730\u542f\u52a8\u65f6\u95f4\u600e\u4e48\u8fd9\u4e48\u957f\u5462\uff1f<\/p>\n \u4ed6\u7b54\uff1a\u6b63\u5e38\u6765\u8bf4\u534a\u5206\u949f\u5e94\u8be5\u5c31\u542f\u52a8\u8d77\u6765\u4e86\u5440\u3002<\/p>\n \u63a5\u7740\u4ed6\u8fd8\u7ed9\u6211\u6f14\u793a\u4e86\u4e00\u4e0b\uff0c\u5728\u4ed6\u90a3\u8fb9\u786e\u5b9e 30 \u591a\u79d2\u5c31\u542f\u52a8\u6210\u529f\u4e86\u3002<\/p>\n \u5f88\u660e\u663e\uff0c\u4e00\u6837\u7684\u4ee3\u7801\uff0c\u4e00\u4e2a\u5730\u65b9\u542f\u52a8\u6162\uff0c\u4e00\u4e2a\u5730\u65b9\u542f\u52a8\u5feb\uff0c\u9996\u5148\u6000\u7591\u73af\u5883\u95ee\u9898\u3002<\/p>\n \u4e8e\u662f\u6211\u51c6\u5907\u6309\u7167\u4e0b\u9762\u7684\u6d41\u7a0b\u8d70\u4e00\u6b21\u3002<\/p>\n \u68c0\u67e5\u8bbe\u7f6e -> \u6e05\u7a7a\u7f13\u5b58 -> \u6362workspace -> \u91cd\u542f -> \u6362\u7535\u8111 -> \u8f9e\u804c<\/p><\/blockquote>\n \u6211\u68c0\u67e5\u4e86\u6240\u6709\u7684\u914d\u7f6e\u3001\u542f\u52a8\u9879\u3001\u7f51\u7edc\u8fde\u63a5\u4ec0\u4e48\u7684\uff0c\u786e\u4fdd\u548c\u4ed6\u672c\u5730\u7684\u73af\u5883\u662f\u4e00\u6a21\u4e00\u6837\u7684\u3002<\/p>\n \u8fd9\u4e00\u5957\u64cd\u4f5c\u4e0b\u6765\uff0c\u5dee\u4e0d\u591a\u4e00\u5c0f\u65f6\u8fc7\u53bb\u4e86\uff0c\u5e76\u6ca1\u6709\u627e\u5230\u4ec0\u4e48\u5934\u7eea\u3002<\/p>\n \u4f46\u662f\u90a3\u4e2a\u65f6\u5019\u6211\u4e00\u70b9\u90fd\u4e0d\u614c\uff0c\u6211\u8fd8\u6709\u7ec8\u6781\u7edd\u62db\uff1a\u91cd\u542f\u3002<\/p>\n \u6bd5\u7adf\u6211\u7684\u7535\u8111\u5df2\u7ecf\u597d\u51e0\u4e2a\u6708\u6ca1\u6709\u5173\u95ed\u8fc7\u4e86\uff0c\u91cd\u542f\u4e00\u4e0b\u4e5f\u633a\u597d\u7684\u3002<\/p>\n \u679c\u7136\uff0c\u91cd\u542f\u4e86\u7535\u8111\u4e4b\u540e\uff0c\u8fd8\u662f\u6ca1\u6709\u4efb\u4f55\u6539\u53d8\u3002<\/p>\n \u6b63\u5728\u7126\u5934\u70c2\u989d\u4e4b\u9645\uff0c\u540c\u4e8b\u8fc7\u6765\u95ee\u6211\u5565\u8fdb\u5ea6\u4e86\u3002<\/p>\n \u6211\u80fd\u600e\u4e48\u8bf4\uff1f<\/p>\n \u6211\u53ea\u80fd\u8bf4\uff1a\u4ece\u65f6\u95f4\u4e0a\u6765\u8bf4\u5e94\u8be5\u89e3\u51b3\u4e86\uff0c\u4f46\u662f\u5b9e\u9645\u4e0a\u6211\u8fde\u9879\u76ee\u90fd\u8fd8\u6ca1\u542f\u52a8\u6210\u529f\u3002<\/p>\n \u542c\u5230\u8fd9\u8bdd\uff0c\u4ed6\u5750\u5728\u6211\u7684\u5de5\u4f4d\uff0c\u51c6\u5907\u5e2e\u6211\u770b\u4e00\u4e0b\u3002<\/p>\n \u534a\u5206\u949f\u4e4b\u540e\uff0c\u4e00\u4e2a\u795e\u5947\u7684\u573a\u666f\u51fa\u73b0\u4e86\uff0c\u4ed6\u5728\u6211\u7684\u7535\u8111\u4e0a\u76f4\u63a5\u5c31\u628a\u9879\u76ee\u542f\u52a8\u8d77\u6765\u4e86\u3002<\/p>\n \u4e00\u76d8\u95ee\uff0c\u4ed6\u5e76\u6ca1\u6709\u4ee5 Debug \u7684\u6a21\u5f0f\u542f\u52a8\uff0c\u800c\u662f\u76f4\u63a5\u8fd0\u884c\u7684\u3002<\/p>\n \u7528\u811a\u8dbe\u5934\u60f3\u4e5f\u77e5\u9053\uff0c\u80af\u5b9a\u662f Debug \u6a21\u5f0f\u5728\u641e\u4e8b\u60c5\u3002<\/p>\n \u7136\u540e\u57fa\u4e8e\u9762\u5411\u6d4f\u89c8\u5668\u7f16\u7a0b\u7684\u539f\u5219\uff0c\u6211\u73b0\u5728\u6709\u4e86\u51e0\u4e2a\u5173\u952e\u8bcd\uff1aIDEA debug \u542f\u52a8\u7f13\u6162\u3002<\/p>\n \u7136\u540e\u53d1\u73b0\u6709\u5f88\u591a\u4eba\u9047\u5230\u4e86\u7c7b\u4f3c\u7684\u95ee\u9898\uff0c\u89e3\u51b3\u65b9\u6cd5\u5c31\u662f\u542f\u52a8\u7684\u65f6\u5019\u53d6\u6d88\u9879\u76ee\u91cc\u9762\u7684\u201c\u65b9\u6cd5\u65ad\u70b9\u201d\u3002<\/p>\n \u4f46\u662f\uff0c\u9057\u61be\u7684\u662f\uff0c\u6ca1\u6709\u5927\u591a\u6570\u6587\u7ae0\u90fd\u662f\u8bf4\u8fd9\u6837\u505a\u5c31\u597d\u4e86\u3002\u4f46\u662f\u5e76\u6ca1\u6709\u544a\u8bc9\u6211\u4e3a\u4ec0\u4e48\u8fd9\u6837\u505a\u5c31\u597d\u4e86\u3002<\/p>\n \u6211\u5f88\u60f3\u77e5\u9053\u4e3a\u4ec0\u4e48\u4f1a\u6709\u8fd9\u4e2a\u5751\uff0c\u56e0\u4e3a\u6211\u7528\u65b9\u6cd5\u65ad\u70b9\u7528\u7684\u8fd8\u662f\u5f88\u591a\u7684\uff0c\u5173\u952e\u662f\u4ee5\u524d\u5728\u4f7f\u7528\u7684\u8fc7\u7a0b\u4e2d\u5b8c\u5168\u6ca1\u6709\u6ce8\u610f\u5230\u8fd8\u6709\u8fd9\u4e2a\u5751\u3002<\/p>\n \u201c\u65b9\u6cd5\u65ad\u70b9\u201d\u8fd8\u662f\u975e\u5e38\u5b9e\u7528\u7684\uff0c\u6bd4\u5982\u6211\u968f\u4fbf\u4e2a\u4f8b\u5b50\u3002<\/p>\n \u4e4b\u524d\u5199\u4e8b\u52a1\u76f8\u5173\u7684\u6587\u7ae0\u7684\u65f6\u5019\uff0c\u63d0\u5230\u8fc7\u8fd9\u6837\u7684\u4e00\u4e2a\u65b9\u6cd5\uff1a<\/p>\n java.sql.Connection#setAutoCommit<\/p><\/blockquote>\n setAutoCommit \u8fd9\u4e2a\u65b9\u6cd5\u6709\u597d\u51e0\u4e2a\u5b9e\u73b0\u7c7b\uff0c\u6211\u4e5f\u4e0d\u77e5\u9053\u5177\u4f53\u4f1a\u8d70\u54ea\u4e00\u4e2a\uff1a<\/p>\n \u6240\u4ee5\uff0c\u8c03\u8bd5\u7684\u65f6\u5019\u53ef\u4ee5\u5728\u4e0b\u9762\u8fd9\u4e2a\u63a5\u53e3\u6253\u4e0a\u4e00\u4e2a\u65ad\u70b9\uff1a<\/p>\n \u7136\u540e\u91cd\u542f\u7a0b\u5e8f\uff0cIDEA \u4f1a\u81ea\u52a8\u5e2e\u4f60\u5224\u65ad\u8d70\u90a3\u4e2a\u5b9e\u73b0\u7c7b\u7684\uff1a<\/p>\n \u4f46\u662f\u9700\u8981\u7279\u522b\u8bf4\u660e\u7684\u662f\uff0c\u4e0d\u662f\u6240\u6709\u7684\u65b9\u6cd5\u65ad\u70b9\u90fd\u4f1a\u5bfc\u81f4\u542f\u52a8\u7f13\u6162\u7684\u95ee\u9898\u3002\u81f3\u5c11\u5728\u6211\u672c\u5730\u770b\u8d77\u6765\u662f\u8fd9\u6837\u7684\u3002<\/p>\n \u5f53\u6211\u628a\u65b9\u6cd5\u65ad\u70b9\u52a0\u5728 Mapper \u7684\u63a5\u53e3\u91cc\u9762\u7684\u65f6\u5019\uff0c\u80fd\u7a33\u5b9a\u590d\u73b0\u8fd9\u4e2a\u95ee\u9898\uff1a<\/p>\n \u5f53\u628a\u65b9\u6cd5\u65ad\u70b9\u52a0\u5728\u9879\u76ee\u7684\u5176\u4ed6\u65b9\u6cd5\u4e0a\u7684\u65f6\u5019\uff0c\u4e0d\u662f\u5fc5\u73b0\u7684\uff0c\u5076\u5c14\u624d\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n \u53e6\u5916\uff0c\u5176\u5b9e\u5f53\u4f60\u4ee5 Debug \u6a21\u5f0f\u542f\u52a8\u4e14\u5e26\u6709\u65b9\u6cd5\u65ad\u70b9\u7684\u65f6\u5019\uff0cIDEA \u662f\u4f1a\u5f39\u51fa\u8fd9\u4e2a\u63d0\u9192\uff0c\u544a\u8bc9\u4f60\u65b9\u6cd5\u65ad\u70b9\u4f1a\u5bfc\u81f4 Debug \u7f13\u6162\u7684\u95ee\u9898\uff1a<\/p>\n \u4f46\u662f\uff0c\u771f\u7537\u4eba\uff0c\u4ece\u4e0d\u770b\u63d0\u9192\u3002\u53cd\u6b63\u6211\u662f\u76f4\u63a5\u5c31\u5ffd\u7565\u4e86\uff0c\u6839\u672c\u6ca1\u6709\u5173\u5fc3\u5f39\u7a97\u7684\u5185\u5bb9\u3002<\/p>\n \u81f3\u4e8e\u4e3a\u4ec0\u4e48\u4f1a\u5728 Mapper \u7684\u63a5\u53e3\u4e0a\u6253\u65b9\u6cd5\u65ad\u70b9\uff1f<\/p>\n \u90fd\u602a\u6211\u624b\u8d31\uff0c\u884c\u4e86\u5427\u3002<\/p>\n \u5728\u627e\u7b54\u6848\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u53d1\u73b0\u4e86\u8fd9\u4e2a idea \u7684\u5b98\u65b9\u793e\u533a\u7684\u94fe\u63a5\uff1a<\/p>\n https:\/\/intellij-support.jetb…<\/a><\/p><\/blockquote>\n \u8fd9\u4e2a\u8d34\u5b50\uff0c\u662f JetBrains Team \u53d1\u5e03\u7684\uff0c\u5173\u4e8e Debug \u529f\u80fd\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7684\u6027\u80fd\u7f13\u6162\u7684\u95ee\u9898\u3002<\/p>\n \u5728\u8fd9\u4e2a\u5e16\u5b50\u4e2d\uff0c\u7b2c\u4e00\u4e2a\u6027\u80fd\u70b9\uff0c\u5c31\u662f Method breakpoints\u3002<\/p>\n \u5b98\u65b9\u662f\u600e\u4e48\u89e3\u91ca\u8fd9\u4e2a\u95ee\u9898\u7684\u5462\uff1f<\/p>\n \u6211\u7ed9\u4f60\u7ffb\u8bd1\u4e00\u6ce2\u3002<\/p>\n Method breakpoints will slow down debugger a lot because of the JVM design, they are expensive to evaluate.<\/p><\/blockquote>\n \u4ed6\u4eec\u8bf4\u7531\u4e8e JVM \u7684\u8bbe\u8ba1\uff0c\u65b9\u6cd5\u65ad\u70b9\u4f1a\u5927\u5927\u964d\u4f4e\u8c03\u8bd5\u5668\u7684\u901f\u5ea6\uff0c\u56e0\u4e3a\u8fd9\u73a9\u610f\u7684 \u201cevaluate\u201d \u6210\u672c\u5f88\u9ad8\u3002<\/p>\n evaluate\uff0c\u56db\u7ea7\u5355\u8bcd\uff0c\u597d\u597d\u8bb0\u4e00\u4e0b\uff0c\u8003\u8bd5\u4f1a\u8003\uff1a<\/p>\n \u5927\u6982\u5c31\u662f\u8bf4\u4f60\u8981\u7528\u65b9\u6cd5\u65ad\u70b9\u7684\u529f\u80fd\uff0c\u5728\u542f\u52a8\u8fc7\u7a0b\u4e2d\uff0c\u5c31\u6d89\u53ca\u5230\u4e00\u4e2a\u5173\u4e8e\u8be5\u65ad\u70b9\u8fdb\u884c\u201c\u8bc4\u4f30\u201d\u7684\u6210\u672c\u3002\u6210\u672c\u5c31\u662f\u542f\u52a8\u7f13\u6162\u3002<\/p>\n \u600e\u4e48\u89e3\u51b3\u8fd9\u4e2a\u201c\u8bc4\u4f30\u201d\u5e26\u6765\u7684\u6210\u672c\u5462\uff1f<\/p>\n \u5b98\u65b9\u7ed9\u51fa\u7684\u65b9\u6848\u5f88\u7b80\u5355\u7c97\u66b4\uff1a<\/p>\n \u4e0d\u8981\u4f7f\u7528\u65b9\u6cd5\u65ad\u70b9\uff0c\u4e0d\u5c31\u6ca1\u6709\u6210\u672c\u4e86\uff1f<\/p>\n \u6240\u4ee5\uff0cRemove\uff0c\u5b8c\u4e8b\uff1a<\/p>\n Remove method breakpoints and consider using the regular line breakpoints.<\/p><\/blockquote>\n \u5220\u9664\u65b9\u6cd5\u65ad\u70b9\u5e76\u8003\u8651\u4f7f\u7528\u5e38\u89c4\u7684 line breakpoints\u3002<\/p>\n \u5b98\u65b9\u8fd8\u662f\u5f88\u8d34\u5fc3\u7684\uff0c\u6015\u4f60\u4e0d\u77e5\u9053\u600e\u4e48 Remove \u8fd8\u4e13\u95e8\u8865\u5145\u4e86\u4e00\u53e5\uff1a<\/p>\n To verify that you don’t have any method breakpoints open .idea\/workspace.xml file in the project root directory (or <project>.iws file if you are using the old project format) and look for any breakpoints inside the method_breakpoints node.<\/p><\/blockquote>\n \u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u8fd9\u4e2a\u65b9\u6cd5\u53bb\u9a8c\u8bc1\u4f60\u662f\u5426\u6253\u5f00\u4e86\u65b9\u6cd5\u65ad\u70b9\u3002<\/p>\n \u5c31\u662f\u53bb .idea\/workspace.xml \u6587\u4ef6\u4e2d\uff0c\u627e\u5230 method_breakpoints \u8fd9\u4e2a Node\uff0c\u5982\u679c\u6709\u5c31 Remove \u4e00\u4e0b\u3002<\/p>\n \u7136\u540e\u6211\u770b\u4e86\u4e00\u4e0b\u6211\u9879\u76ee\u91cc\u9762\u5bf9\u5e94\u7684\u6587\u4ef6\uff0c\u6ca1\u6709\u627e\u5230 method_breakpoints \u5173\u952e\u5b57\uff0c\u4f46\u662f\u627e\u5230\u4e86\u4e0b\u9762\u8fd9\u4e2a\u3002<\/p>\n \u5e94\u8be5\u662f\u6587\u6863\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u95ee\u9898\u4e0d\u5927\uff0c\u53cd\u6b63\u662f\u4e00\u4e2a\u610f\u601d\uff0c<\/p>\n \u5176\u5b9e\u5b98\u65b9\u7ed9\u51fa\u7684\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u867d\u7136\u903c\u683c\u7a0d\u5fae\u9ad8\u4e00\u70b9\uff0c\u4f46\u8fd8\u662f\u6211\u524d\u9762\u7ed9\u7684\u8fd9\u4e2a\u64cd\u4f5c\u66f4\u7b80\u5355\uff1a<\/p>\n \u9488\u5bf9\u201c\u5230\u5e95\u4e3a\u4ec0\u4e48\u201d\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n \u5728\u8fd9\u91cc\uff0c\u5b98\u65b9\u7ed9\u7684\u56de\u7b54\uff0c\u7279\u522b\u7684\u6a21\u7cca\uff1abecause of the JVM design\u3002<\/p>\n \u522b\u95ee\uff0c\u95ee\u5c31\u662f\u7531\u4e8e JVM \u8bbe\u8ba1\u5982\u6b64\u3002<\/p>\n \u6211\u89c9\u5f97\u8fd9\u4e0d\u662f\u6211\u60f3\u8981\u7684\u7b54\u6848\uff0c\u4f46\u662f\u597d\u5728\u6211\u5728\u8fd9\u4e2a\u5e16\u5b50\u4e0b\u9762\u627e\u5230\u4e86\u4e00\u4e2a\u201c\u597d\u4e8b\u4e4b\u4eba\u201d\u5199\u7684\u56de\u590d\uff1a<\/p>\n \u8fd9\u4e2a\u597d\u4e8b\u4e4b\u4eba\u53eb\u505a Gabi \u8001\u94c1\uff0c\u6211\u770b\u5230\u4ed6\u56de\u590d\u7684\u7b2c\u4e00\u53e5\u8bdd \u201cI made some research\u201d\uff0c\u6211\u5c31\u77e5\u9053\uff0c\u8fd9\u6ce2\u7a33\u4e86\uff0c\u627e\u5bf9\u5730\u65b9\u4e86\uff0c\u7b54\u6848\u80af\u5b9a\u5c31\u85cf\u5728\u4ed6\u9644\u4e0a\u7684\u8fd9\u4e2a\u94fe\u63a5\u91cc\u9762\u3002<\/p>\n Gabi \u8001\u94c1\u8bf4\uff1a\u54e5\u5b50\u4eec\uff0c\u6211\u7814\u7a76\u4e86\u4e00\u4e0b\u8fd9\u4e2a\u65b9\u6cd5\u65ad\u70b9\u4e3a\u5565\u4f1a\u6162\u7684\u539f\u56e0\uff0c\u7814\u7a76\u62a5\u544a\u5728\u8fd9\u91cc\uff1a<\/p>\n http:\/\/www.smartik.net\/2017\/1…<\/a><\/p><\/blockquote>\n \u4ed6\u751a\u81f3\u8fd8\u6765\u4e86\u4e00\u4e2a\u6982\u8981\uff1aTo make the long story short\uff0c\u957f\u8bdd\u77ed\u65f6\u3002<\/p>\n \u4ed6\u771f\u7684\u5f88\u8d34\u5fc3\uff0c\u6211\u54ed\u6b7b\u3002<\/p>\n \u4ed6\u9996\u5148\u6307\u51fa\u4e86\u95ee\u9898\u7684\u6839\u672c\u539f\u56e0\uff1a<\/p>\n it seems that the root issue is that Method Breakpoints are implemented by using JDPA’s Method Entry & Method Exit feature.<\/p><\/blockquote>\n \u6839\u672c\u95ee\u9898\u5728\u4e8e\u65b9\u6cd5\u65ad\u70b9\u662f\u901a\u8fc7\u4f7f\u7528 JDPA \u7684 Method Entry & Method Exit \u7279\u6027\u5b9e\u73b0\u7684\u3002<\/p>\n \u6709\u540c\u5b66\u5c31\u8981\u95ee\u4e86\uff0cJDPA\uff0c\u662f\u5565\uff1f<\/p>\n \u662f\u4e2a\u5b9d\u8d1d\uff1a<\/p>\n https:\/\/docs.oracle.com\/javas…<\/a><\/p><\/blockquote>\n JPDA\uff0c\u5168\u79f0 Java Platform Debugger Architecture\u3002<\/p>\n IDEA \u91cc\u9762\u7684\u5404\u79cd Debug \u529f\u80fd\uff0c\u5c31\u662f\u57fa\u4e8e\u8fd9\u4e2a\u73a9\u610f\u6765\u5b9e\u73b0\u7684\u3002<\/p>\n \u4e0d\u61c2\u4e5f\u6ca1\u5173\u7cfb\uff0c\u8fd9\u4e2a\u4e1c\u897f\u9762\u8bd5\u53c8\u4e0d\u8003\uff0c\u5728\u8fd9\u91cc\u77e5\u9053\u6709\u8fd9\u4e2a\u6280\u672f\u5c31\u884c\u3002<\/p>\n \u63a5\u7740\uff0c\u4ed6\u7528\u4e86\u56db\u4e2a any \u6765\u5b8c\u6210\u4e86\u8df3\u53e5\u56db\u62bc\uff1a<\/p>\n This implementation requires the JVM to fire an event each time any thread enters any method and when any thread exits any method.<\/p><\/blockquote>\n \u8fd9\u4e2a\u5b9e\u73b0\uff0c\u8981\u6c42 JVM\uff0c\u6bcf\u6b21\uff0c\u5728\u4efb\u4f55\uff08any\uff09\u7ebf\u7a0b\u8fdb\u5165\u4efb\u4f55\uff08any\uff09\u65b9\u6cd5\u65f6\uff0c\u4ee5\u53ca\u5728\u4efb\u4f55\uff08any\uff09\u7ebf\u7a0b\u9000\u51fa\u4efb\u4f55\uff08any\uff09\u65b9\u6cd5\u65f6\u89e6\u53d1\u4e8b\u4ef6\u3002<\/p>\n \u597d\u5bb6\u4f19\uff0c\u8fd9\u4e0d\u5c31\u662f\u4e2a AOP \u5417\uff1f<\/p>\n \u8fd9\u4e48\u4e00\u8bf4\uff0c\u6211\u5c31\u660e\u767d\u4e3a\u4ec0\u4e48\u65b9\u6cd5\u65ad\u70b9\u7684\u6027\u80fd\u8fd9\u4e48\u5dee\u4e86\u3002\u8981\u89e6\u53d1\u8fd9\u4e48\u591a\u8fdb\u5165\u65b9\u6cd5\u548c\u9000\u51fa\u65b9\u6cd5\u7684\u4e8b\u4ef6\uff0c\u53ef\u4e0d\u5f97\u8017\u8d39\u8fd9\u4e48\u591a\u65f6\u95f4\u5417\uff1f<\/p>\n \u5177\u4f53\u7684\u7ec6\u8282\uff0c\u4ed6\u5728\u524d\u9762\u8bf4\u7684\u7814\u7a76\u62a5\u544a\u91cc\u9762\u90fd\u5199\u6e05\u695a\u4e86\uff0c\u5982\u679c\u4f60\u5bf9\u7ec6\u8282\u611f\u5174\u8da3\u7684\u8bdd\uff0c\u53ef\u4ee5\u54a8\u8be2\u9605\u8bfb\u4e00\u4e0b\u4ed6\u7684\u90a3\u7bc7\u62a5\u544a\u3002<\/p>\n \u8bdd\u8bf4\u4ed6\u8fd9\u4e2a\u62a5\u544a\u7684\u540d\u5b57\u4e5f\u8d77\u7684\u633a\u552c\u4eba\u7684\uff1aMethod Breakpoints are Evil\u3002<\/p>\n \u6211\u5e26\u4f60\u770b\u4e24\u4e2a\u5173\u952e\u7684\u5730\u65b9\u3002<\/p>\n \u7b2c\u4e00\u4e2a\u662f\u5173\u4e8e Method Entry & Method Exit \u7684\uff1a<\/p>\n \u8fd9\u91cc\u662f\u8868\u660e\uff0c\u524d\u9762\u6211\u8bf4\u7684\u90a3\u4e2a\u7c7b\u4f3c AOP \u7684\u7a0d\u5fae\u5177\u4f53\u4e00\u70b9\u7684\u64cd\u4f5c\u3002<\/p>\n \u6838\u5fc3\u610f\u601d\u5c31\u4e00\u53e5\u8bdd\uff1a\u89e6\u53d1\u7684\u4e8b\u4ef6\u592a\u591a\uff0c\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u5389\u5bb3\u3002<\/p>\n \u7b2c\u4e8c\u4e2a\u5173\u952e\u7684\u5730\u65b9\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n \u6587\u7ae0\u7684\u6700\u540e\u7ed9\u51fa\u4e86\u4e94\u4e2a\u7ed3\u8bba\uff1a<\/p>\n \u524d\u9762\u56db\u4e2a\u70b9\u6ca1\u5565\u8bf4\u7684\u4e86\u3002<\/p>\n \u6700\u540e\u4e00\u4e2a\u70b9\uff1a\u8003\u8651\u5173\u95ed\u65b9\u6cd5\u9000\u51fa\u4e8b\u4ef6\u3002<\/p>\n \u8fd9\u4e2a\u70b9\u9a8c\u8bc1\u8d77\u6765\u975e\u5e38\u7b80\u5355\uff0c\u5728\u65b9\u6cd5\u65ad\u70b9\u4e0a\u53f3\u952e\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u9009\u9879\uff0cMethod Entry & Method Exit \u9ed8\u8ba4\u90fd\u662f\u52fe\u9009\u4e0a\u4e86\uff1a<\/p>\n \u6240\u4ee5\u6211\u5728\u672c\u5730\u968f\u4fbf\u7528\u4e00\u4e2a\u9879\u76ee\u9a8c\u8bc1\u4e86\u4e00\u4e0b\u3002<\/p>\n \u6253\u5f00 Method Exit \u4e8b\u4ef6\uff0c\u542f\u52a8\u8017\u65f6\uff1a113.244 \u79d2\u3002<\/p>\n \u5173\u95ed Method Exit \u4e8b\u4ef6\uff0c\u542f\u52a8\u8017\u65f6\uff1a46.754 \u79d2\u3002<\/p>\n \u4f60\u522b\u8bf4\uff0c\u8fd8\u771f\u6709\u7528\u3002<\/p>\n \u73b0\u5728\u6211\u5927\u6982\u662f\u77e5\u9053\u4e3a\u4ec0\u4e48\u65b9\u6cd5\u65ad\u70b9\u8fd9\u4e48\u6162\u4e86\u3002<\/p>\n \u8fd9\u771f\u4e0d\u662f BUG\uff0c\u800c\u662f feature\u3002<\/p>\n \u800c\u5173\u4e8e\u65b9\u6cd5\u65ad\u70b9\u7684\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u987a\u4fbf\u5728\u793e\u533a\u641c\u7d22\u4e86\u4e00\u4e0b\uff0c\u6700\u65e9\u6211\u8ffd\u6eaf\u5230\u4e86 2008 \u5e74\uff1a<\/p>\n \u8fd9\u4e2a\u8001\u54e5\u8bf4\u4ed6\u8c03\u8bd5 Web \u7a0b\u5e8f\u7684\u901f\u5ea6\u6162\u5230\u65e0\u6cd5\u4f7f\u7528\u7684\u7a0b\u5ea6\u3002\u4ed6\u7684\u9879\u76ee\u53ea\u542f\u7528\u4e86\u4e00\u884c\u65ad\u70b9\uff0c\u6ca1\u6709\u65b9\u6cd5\u65ad\u70b9\u3002<\/p>\n \u8bf7\u6c42\u5927\u4f6c\u5e2e\u4ed6\u770b\u770b\u3002<\/p>\n \u7136\u540e\u5927\u4f6c\u5e2e\u4ed6\u4e00\u987f\u5206\u6790\u4e5f\u6ca1\u627e\u5230\u539f\u56e0\u3002<\/p>\n \u4ed6\u81ea\u5df1\u4e5f\u7279\u522b\u7684\u7eb3\u95f7\uff0c\u8bf4\uff1a<\/p>\n \u6211\u5565\u4e5f\u6ca1\u52a8\uff0c\u592a\u5947\u602a\u4e86\u3002\u8fd9\u73a9\u610f\u6709\u65f6\u53ef\u4ee5\uff0c\u6709\u65f6\u4e0d\u884c\u3002<\/p>\n \u50cf\u4e0d\u50cf\u4e00\u53e5\u7ecf\u5178\u53f0\u8bcd\uff1a<\/p>\n \u4f46\u662f\u95ee\u9898\u6700\u540e\u8fd8\u662f\u89e3\u51b3\u4e86\u3002\u600e\u4e48\u89e3\u51b3\u7684\u5462\uff1f<\/p>\n \u4ed6\u81ea\u5df1\u8bf4\uff1a<\/p>\n \u786e\u5b9e\u662f\u6709\u4e2a\u65b9\u6cd5\u65ad\u70b9\uff0c\u4ed6\u4e5f\u4e0d\u77e5\u9053\u600e\u4e48\u6253\u4e0a\u8fd9\u4e2a\u65ad\u70b9\u7684\uff0c\u53ef\u80fd\u548c\u6211\u4e00\u6837\uff0c\u662f\u624b\u6296\u4e86\u5427\u3002<\/p>\n \u5728\u524d\u9762\u51fa\u73b0\u7684\u5b98\u65b9\u5e16\u5b50\u7684\u6700\u4e0b\u9762\uff0c\u6709\u8fd9\u6837\u7684\u4e24\u4e2a\u94fe\u63a5\uff1a<\/p>\n \u5b83\u6307\u5411\u4e86\u8fd9\u4e2a\u5730\u65b9\uff1a<\/p>\n https:\/\/www.jetbrains.com\/hel…<\/a><\/p><\/blockquote>\n \u6211\u628a\u8fd9\u90e8\u5206\u94fe\u63a5\u90fd\u6253\u5f00\u770b\u4e86\u4e00\u904d\uff0c\u7ecf\u8fc7\u9274\u5b9a\uff0c\u8fd9\u53ef\u771f\u662f\u597d\u4e1c\u897f\u554a\u3002<\/p>\n \u8fd9\u662f\u5b98\u65b9\u5728\u624b\u6478\u624b\u6559\u5b66\uff0c\u6559\u4f60\u5982\u4f55\u4f7f\u7528 Debug \u6a21\u5f0f\u3002<\/p>\n \u6211\u4e4b\u524d\u770b\u8fc7\u7684\u4e00\u4e9b\u8c03\u8bd5\u5c0f\u6280\u5de7\u76f8\u5173\u7684\u6587\u7ae0\uff0c\u539f\u6765\u5c31\u662f\u7ffb\u8bd1\u81ea\u5b98\u65b9\u8fd9\u91cc\u554a\u3002<\/p>\n \u6211\u5728\u8fd9\u91cc\u4e3e\u4e24\u4e2a\u4f8b\u5b50\uff0c\u7b97\u662f\u4e00\u4e2a\u5bfc\u8bfb\uff0c\u5f3a\u70c8\u63a8\u8350\u90a3\u4e9b\u5728 Debug \u7a0b\u5e8f\u7684\u65f6\u5019\uff0c\u53ea\u77e5\u9053\u4e0d\u505c\u7684\u4e0b\u4e00\u6b65\u3001\u8df3\u8fc7\u5f53\u524d\u65ad\u70b9\u7b49\u8fd9\u6837\u7684\u57fa\u672c\u64cd\u4f5c\u7684\u540c\u5b66\u53bb\u4ed4\u7ec6\u9605\u8bfb\uff0c\u52a8\u624b\u5b9e\u64cd\u4e00\u628a\u3002<\/p>\n \u9996\u5148\u662f\u8fd9\u4e2a\uff1a<\/p>\n \u9488\u5bf9 Java \u7684 Streams \u6d41\u7684\u8c03\u8bd5\u3002<\/p>\n \u5b98\u65b9\u7ed9\u4e86\u4e00\u4e2a\u8c03\u8bd5\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u6211\u505a\u4e86\u4e00\u70b9\u70b9\u5fae\u8c03\uff0c\u4f60\u7c98\u8fc7\u53bb\u5c31\u80fd\u8dd1\uff1a<\/p>\n \u4ee3\u7801\u903b\u8f91\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u627e 100 \u4ee5\u5185\u7684\uff0c\u5927\u4e8e 50 \u7684\u7d20\u6570\u3002<\/p>\n \u5f88\u660e\u663e\uff0c\u5728 isPrime \u65b9\u6cd5\u91cc\u9762\u5bf9 91 \u8fd9\u4e2a\u975e\u7d20\u6570\u505a\u4e86\u7279\u6b8a\u5904\u7406\uff0c\u5bfc\u81f4\u7a0b\u5e8f\u6700\u7ec8\u4f1a\u8f93\u51fa 91\uff0c\u4e5f\u5c31\u662f\u51fa BUG \u4e86\u3002<\/p>\n \u867d\u7136\u8fd9\u4e2a BUG \u4e00\u76ee\u4e86\u7136\uff0c\u4f46\u662f\u4e0d\u8981\u7b11\uff0c\u8981\u5fcd\u4f4f\uff0c\u8981\u5047\u88c5\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48\u3002<\/p>\n \u73b0\u5728\u6211\u4eec\u8981\u901a\u8fc7\u8c03\u8bd5\u7684\u65b9\u5f0f\u627e\u5230 BUG\u3002<\/p>\n \u65ad\u70b9\u6253\u5728\u8fd9\u4e2a\u4f4d\u7f6e\uff1a<\/p>\n \u4ee5 Debug \u7684\u6a21\u5f0f\u8fd0\u884c\u7684\u65f6\u5019\uff0c\u6709\u8fd9\u6837\u7684\u4e00\u4e2a\u56fe\u6807\uff1a<\/p>\n \u70b9\u51fb\u4e4b\u540e\u4f1a\u6709\u8fd9\u6837\u7684\u4e00\u4e2a\u5f39\u7a97\u51fa\u6765\uff1a<\/p>\n \u4e0a\u9762\u6846\u8d77\u6765\u7684\u662f\u5bf9\u5e94\u7740\u7a0b\u5e8f\u7684\u6bcf\u4e00\u4e2a\u65b9\u6cd5\u8c03\u7528\u987a\u5e8f\uff0c\u4ee5\u53ca\u8c03\u7528\u5b8c\u6210\u4e4b\u540e\u7684\u8f93\u51fa\u662f\u4ec0\u4e48\u3002<\/p>\n \u4e0b\u9762\u6846\u8d77\u6765\u7684\u8fd9\u4e2a \u201cFlat Mode\u201d \u70b9\u51fb\u4e4b\u540e\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n \u6700\u53f3\u8fb9\uff0c\u4e5f\u5c31\u662f\u7ecf\u8fc7 filter \u4e4b\u540e\u8f93\u51fa\u7684\u7ed3\u679c\u3002<\/p>\n \u91cc\u9762\u5c31\u5305\u542b\u4e86 91 \u8fd9\u4e2a\u6570\uff1a<\/p>\n \u70b9\u51fb\u8fd9\u4e2a \u201c91\u201d\uff0c\u53d1\u73b0\u5728\u7ecf\u8fc7\u7b2c\u4e00\u4e2a filter \u4e4b\u540e\uff0c91 \u8fd9\u4e2a\u6570\u636e\u8fd8\u5728\u3002<\/p>\n \u8bf4\u660e\u8fd9\u4e2a\u5730\u65b9\u51fa\u95ee\u9898\u4e86\u3002<\/p>\n \u800c\u8fd9\u4e2a\u5730\u65b9\u5c31\u662f\u524d\u9762\u63d0\u5230\u7684\u5bf9 \u201c91\u201d \u505a\u4e86\u7279\u6b8a\u5904\u7406\u7684 isPrime \u65b9\u6cd5\u3002<\/p>\n \u8fd9\u6837\u5c31\u80fd\u6709\u9488\u5bf9\u6027\u7684\u53bb\u5206\u6790\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u7f29\u5c0f\u95ee\u9898\u6392\u9664\u8303\u56f4\u3002<\/p>\n \u8fd9\u4e2a\u529f\u80fd\u600e\u4e48\u8bf4\u5462\uff0c\u53cd\u6b63\u6211\u7684\u8bc4\u8bba\u662f\uff1a<\/p>\n \u603b\u4e4b\uff0c\u4ee5\u4e0a\u5c31\u662f IDEA \u5bf9\u4e8e Streams \u6d41\u8fdb\u884c\u8c03\u8bd5\u7684\u4e00\u4e2a\u7b80\u5355\u793a\u4f8b\u3002<\/p>\n \u63a5\u7740\u518d\u6f14\u793a\u4e00\u4e2a\u5e76\u53d1\u76f8\u5173\u7684\uff1a<\/p>\n \u5b98\u65b9\u7ed9\u4e86\u8fd9\u6837\u7684\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n \u4ee3\u7801\u91cc\u9762\u641e\u4e00\u4e2a\u7ebf\u7a0b\u5b89\u5168\u7684 list \u96c6\u5408\uff0c\u7136\u540e\u4e3b\u7ebf\u7a0b\u548c\u4e00\u4e2a\u5f02\u6b65\u7ebf\u7a0b\u5206\u522b\u5f80\u8fd9\u4e2a list \u91cc\u9762\u585e\u540c\u4e00\u4e2a\u6570\u636e\u3002<\/p>\n \u6309\u7167 addIfAbsent \u65b9\u6cd5\u7684\u610f\u601d\uff0c\u5982\u679c\u8981\u6dfb\u52a0\u7684\u5143\u7d20\u5728 list \u91cc\u9762\u5b58\u5728\u4e86\uff0c\u5219\u4e0d\u6dfb\u52a0\u3002<\/p>\n \u4f60\u8bf4\u8fd9\u4e2a\u7a0b\u5e8f\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u5417\uff1f<\/p>\n \u80af\u5b9a\u4e0d\u662f\u3002<\/p>\n \u4f60\u60f3\u60f3\uff0c\u5148\u5224\u65ad\uff0c\u518d\u6dfb\u52a0\uff0c\u7ecf\u5178\u7684\u975e\u539f\u5b50\u6027\u64cd\u4f5c\u3002<\/p>\n \u4f46\u662f\u8fd9\u4e2a\u7a0b\u5e8f\u4f60\u62ff\u53bb\u76f4\u63a5\u8dd1\uff0c\u53c8\u4e0d\u592a\u5bb9\u6613\u8dd1\u51fa\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\u573a\u666f\uff1a<\/p>\n \u600e\u4e48\u529e\uff1f<\/p>\n Debug \u5c31\u6765\u5e2e\u4f60\u5e72\u8fd9\u4e2a\u4e8b\u513f\u4e86\u3002<\/p>\n \u5728\u8fd9\u91cc\u6253\u4e00\u4e2a\u65ad\u70b9\uff0c\u7136\u540e\u53f3\u952e\u65ad\u70b9\uff0c\u9009\u62e9 \u201cThread\u201d\uff1a<\/p>\n \u8fd9\u6837\u7a0b\u5e8f\u8dd1\u8d77\u6765\u7684\u65f6\u5019\u4e3b\u7ebf\u7a0b\u548c\u5f02\u6b65\u7ebf\u7a0b\u90fd\u4f1a\u5728\u8fd9\u4e2a\u5730\u65b9\u505c\u4e0b\u6765\uff1a<\/p>\n \u53ef\u4ee5\u901a\u8fc7 \u201cFrames\u201d \u4e2d\u7684\u4e0b\u62c9\u6846\u5206\u522b\u9009\u62e9 Debug \u4e3b\u7ebf\u7a0b\u8fd8\u662f\u5f02\u6b65\u7ebf\u7a0b\u3002<\/p>\n \u7531\u4e8e\u4e24\u4e2a\u7ebf\u7a0b\u90fd\u6267\u884c\u5230\u4e86 add \u65b9\u6cd5\uff0c\u6240\u4ee5\u6700\u7ec8\u7684\u8f93\u51fa\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n \u8fd9\u4e0d\u5c31\u51fa\u73b0\u7ebf\u7a0b\u4e0d\u5b89\u5168\u4e86\u5417\uff1f<\/p>\n \u5373\u4f7f\u4f60\u77e5\u9053\u8fd9\u4e2a\u5730\u65b9\u662f\u7ebf\u7a0b\u4e0d\u5b89\u5168\u7684\uff0c\u4f46\u662f\u5982\u679c\u6ca1\u6709 Debug \u6765\u5e2e\u5fd9\u8c03\u8bd5\uff0c\u8981\u901a\u8fc7\u7a0b\u5e8f\u8f93\u51fa\u6765\u9a8c\u8bc1\u8fd8\u662f\u6bd4\u8f83\u56f0\u96be\u7684\u3002<\/p>\n \u6bd5\u7adf\u591a\u7ebf\u7a0b\u95ee\u9898\uff0c\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u90fd\u4e0d\u662f\u6bcf\u6b21\u90fd\u80fd\u5fc5\u73b0\u7684\u95ee\u9898\u3002<\/p>\n \u5b9a\u4f4d\u5230\u95ee\u9898\u4e4b\u540e\uff0c\u5b98\u65b9\u4e5f\u7ed9\u51fa\u4e86\u6b63\u786e\u7684\u4ee3\u7801\u7247\u6bb5\uff1a<\/p>\n \u597d\u4e86\uff0c\u8bf4\u597d\u4e86\u662f\u5bfc\u8bfb\uff0c\u8fd9\u90fd\u662f\u57fa\u672c\u64cd\u4f5c\u3002\u8fd8\u662f\u90a3\u53e5\u8bdd\uff0c\u5982\u679c\u611f\u5174\u8da3\uff0c\u81ea\u5df1\u53bb\u7ffb\u4e00\u4e0b\uff0c\u8ddf\u7740\u6848\u4f8b\u64cd\u4f5c\u4e00\u4e0b\u3002<\/p>\n \u5c31\u7b97\u4f60\u770b\u5230\u6709\u4eba\u628a Debug \u6e90\u7801\uff0c\u73a9\u51fa\u82b1\u6765\u4e86\uff0c\u4e5f\u65e0\u5916\u4e4e\u4e0d\u8fc7\u662f\u8fd9\u6837\u7684\u51e0\u4e2a\u57fa\u7840\u64cd\u4f5c\u7684\u7ec4\u5408\u800c\u5df2\u3002<\/p>\n \u8ba9\u6211\u4eec\u518d\u6b21\u56de\u5230\u5b98\u65b9\u7684\u201c\u5173\u4e8e Debug \u529f\u80fd\u53ef\u80fd\u4f1a\u5bfc\u81f4\u7684\u6027\u80fd\u7f13\u6162\u7684\u95ee\u9898\u201d\u8fd9\u4e2a\u5e16\u5b50\u91cc\u9762\uff1a<\/p>\n \u5f53\u6211\u770b\u5230\u65b9\u6846\u91cc\u9762\u6846\u8d77\u6765\u7684 \u201cCollections classes\u201d \u548c \u201ctoString()\u201d \u65b9\u6cd5\u7684\u65f6\u5019\uff0c\u773c\u6cea\u90fd\u5feb\u4e0b\u6765\u4e86\u3002<\/p>\n \u6211\u6700\u65e9\u5f00\u59cb\u5199\u6587\u7ae0\u7684\u65f6\u5019\uff0c\u66fe\u7ecf\u88ab\u8fd9\u4e2a\u73a9\u610f\u5751\u60e8\u4e86\u3002<\/p>\n \u4e09\u5e74\u524d\uff0c2019 \u5e74\uff0c\u6211\u5199\u4e86\u8fd9\u7bc7\u6587\u7ae0\u300a\u8fd9\u9053Java\u57fa\u7840\u9898\u771f\u7684\u6709\u5751\uff01\u6211\u4e5f\u6ca1\u60f3\u5230\u8fd8\u6709\u7eed\u96c6\u3002\u300b<\/a><\/p>\n \u5f53\u65f6 Debug \u8c03\u8bd5 ArrayList \u7684\u65f6\u5019\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff0c\u6211\u4e00\u5ea6\u4ee5\u4e3a\u6211\u88ab\u8d28\u5b50\u5e72\u6270\u4e86\uff1a<\/p>\n \u4e00\u53e5\u8bdd\u6c47\u603b\u5c31\u662f\u5728\u5355\u7ebf\u7a0b\u7684\u60c5\u51b5\u4e0b\uff0c\u7a0b\u5e8f\u76f4\u63a5\u8fd0\u884c\u7684\u7ed3\u679c\u548c Debug \u8f93\u51fa\u7684\u7ed3\u679c\u662f\u4e0d\u4e00\u6837\u7684\u3002<\/p>\n \u5f53\u65f6\u6211\u662f\u767e\u601d\u4e0d\u5f97\u5176\u89e3\u3002<\/p>\n \u76f4\u5230 8 \u4e2a\u6708\u540e\uff0c\u5199\u300aJDK\u7684BUG\u5bfc\u81f4\u7684\u5185\u5b58\u6ea2\u51fa\uff01\u53cd\u6b63\u6211\u662f\u6ca1\u60f3\u5230\u8fd8\u80fd\u6709\u7eed\u96c6\u300b<\/a>\u8fd9\u7bc7\u6587\u7ae0\u7684\u65f6\u5019\u624d\u5076\u7136\u95f4\u627e\u5230\u95ee\u9898\u7684\u7b54\u6848\u3002<\/p>\n \u6839\u672c\u539f\u56e0\u5c31\u662f\u5728 Debug \u6a21\u5f0f\u4e0b\uff0cIDEA \u4f1a\u81ea\u52a8\u89e6\u53d1\u96c6\u5408\u7c7b\u7684 toString \u65b9\u6cd5\u3002\u800c\u5728\u67d0\u4e9b\u96c6\u5408\u7c7b\u7684 toString \u65b9\u6cd5\u91cc\u9762\uff0c\u4f1a\u6709\u8bf8\u5982\u4fee\u6539\u5934\u8282\u70b9\u7684\u903b\u8f91\uff0c\u5bfc\u81f4\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u679c\u548c\u9884\u671f\u7684\u4e0d\u5339\u914d\u3002<\/p>\n \u4e5f\u5c31\u662f\u5bf9\u5e94\u8fd9\u53e5\u8bdd\uff1a<\/p>\n \u7ffb\u8bd1\u8fc7\u6765\u5c31\u662f\uff1a\u8001\u94c1\u8bf7\u6ce8\u610f\uff0c\u5982\u679c toString \u65b9\u6cd5\u4e2d\u7684\u4ee3\u7801\u66f4\u6539\u4e86\u7a0b\u5e8f\u7684\u72b6\u6001\uff0c\u5219\u5728 debug \u72b6\u6001\u4e0b\u8fd0\u884c\u65f6\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u4e5f\u53ef\u4ee5\u66f4\u6539\u5e94\u7528\u7a0b\u5e8f\u7684\u8fd0\u884c\u7ed3\u679c\u3002<\/p>\n \u6700\u540e\u7684\u89e3\u51b3\u65b9\u6848\u5c31\u662f\u5173\u95ed IDEA \u7684\u8fd9\u4e24\u4e2a\u914d\u7f6e\uff1a<\/p>\n \u540c\u65f6\uff0c\u6211\u4e5f\u5728\u5b98\u65b9\u6587\u6863\u4e2d\u627e\u5230\u4e86\u8fd9\u4e2a\u4e24\u4e2a\u914d\u7f6e\u7684\u89e3\u91ca\uff1a<\/p>\n<\/p>\n
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\u610f\u5916\u6536\u83b7<\/h2>\n
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class PrimeFinder {\n\n public static void main(String[] args) {\n IntStream.iterate(1, n -> n + 1)\n .limit(100)\n .filter(PrimeTest::isPrime)\n .filter(value -> value > 50)\n .forEach(System.out::println);\n }\n}\n\nclass PrimeTest {\n static boolean isPrime(int candidate) {\n return candidate == 91 ||\n IntStream.rangeClosed(2, (int) Math.sqrt(candidate))\n .noneMatch(n -> (candidate % n == 0));\n }\n}<\/code><\/pre>\n<\/p>\n
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public class ConcurrencyTest {\n static final List a = Collections.synchronizedList(new ArrayList());\n\n public static void main(String[] args) {\n Thread t = new Thread(() -> addIfAbsent(17));\n t.start();\n addIfAbsent(17);\n t.join();\n System.out.println(a);\n }\n\n private static void addIfAbsent(int x) {\n if (!a.contains(x)) {\n a.add(x);\n }\n }\n}<\/code><\/pre>\n<\/p>\n
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\u56de\u9996\u5f80\u4e8b<\/h2>\n
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