{"id":61147,"date":"2024-10-13T08:49:14","date_gmt":"2024-10-13T00:49:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61147\/"},"modified":"2024-10-13T08:49:14","modified_gmt":"2024-10-13T00:49:14","slug":"delphi%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%ab%e5%85%a5%e6%97%a5%e6%9c%9f%ef%bc%88date%ef%bc%89%ef%bc%9f-delphi-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%ab%e5%85%a5date","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61147\/","title":{"rendered":"Delphi\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u5beb\u5165\u65e5\u671f\uff08Date\uff09\uff1f (delphi \u6578\u64da\u5eab\u5beb\u5165date)"},"content":{"rendered":"

Delphi\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u5beb\u5165\u65e5\u671f\uff08Date\uff09\uff1f<\/h1>\n

\u5728\u958b\u767c\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u6578\u64da\u5eab\u7684\u65e5\u671f\u8655\u7406\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002Delphi\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u958b\u767c\u5de5\u5177\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u6578\u64da\u5eab\u4e2d\u7684\u65e5\u671f\u5beb\u5165\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Delphi\u4e2d\u5c07\u65e5\u671f\u5beb\u5165\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n

1. \u6578\u64da\u5eab\u9023\u63a5<\/h2>\n

\u5728\u9032\u884c\u4efb\u4f55\u6578\u64da\u5eab\u64cd\u4f5c\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002Delphi\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u9023\u63a5\u65b9\u5f0f\uff0c\u5982\u4f7f\u7528FireDAC\u3001ADO\u6216BDE\u7b49\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528FireDAC\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n

uses\n  FireDAC.Comp.Client, FireDAC.Stan.Def, FireDAC.Stan.Async, FireDAC.DApt;\n\nvar\n  Connection: TFDConnection;\nbegin\n  Connection := TFDConnection.Create(nil);\n  try\n    Connection.DriverName := 'MySQL';\n    Connection.Params.Add('Server=localhost');\n    Connection.Params.Add('Database=mydb');\n    Connection.Params.Add('User_Name=root');\n    Connection.Params.Add('Password=password');\n    Connection.Connected := True;\n  finally\n    Connection.Free;\n  end;\nend;<\/code><\/pre>\n
2. \u5beb\u5165\u65e5\u671f\u5230\u6578\u64da\u5eab<\/h2>\n
\u4e00\u65e6\u5efa\u7acb\u4e86\u6578\u64da\u5eab\u9023\u63a5\uff0c\u5c31\u53ef\u4ee5\u958b\u59cb\u5beb\u5165\u65e5\u671f\u3002Delphi\u4e2d\u7684\u65e5\u671f\u985e\u578b\u662fTDateTime\uff0c\u9019\u4f7f\u5f97\u65e5\u671f\u7684\u8655\u7406\u8b8a\u5f97\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u5c07\u7576\u524d\u65e5\u671f\u5beb\u5165\u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n
var\n  Query: TFDQuery;\n  CurrentDate: TDateTime;\nbegin\n  Query := TFDQuery.Create(nil);\n  try\n    Query.Connection := Connection; \/\/ \u4f7f\u7528\u4e4b\u524d\u5efa\u7acb\u7684\u9023\u63a5\n    CurrentDate := Now; \/\/ \u7372\u53d6\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\n    Query.SQL.Text := 'INSERT INTO mytable (date_column) VALUES (:date)';\n    Query.ParamByName('date').AsDateTime := CurrentDate; \/\/ \u8a2d\u7f6e\u53c3\u6578\n    Query.ExecSQL; \/\/ \u57f7\u884cSQL\u8a9e\u53e5\n  finally\n    Query.Free;\n  end;\nend;<\/code><\/pre>\n
3. \u65e5\u671f\u683c\u5f0f\u5316<\/h2>\n
\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u5c07\u65e5\u671f\u683c\u5f0f\u5316\u70ba\u7279\u5b9a\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002Delphi\u63d0\u4f9b\u4e86FormatDateTime\u51fd\u6578\u4f86\u5be6\u73fe\u9019\u4e00\u9ede\u3002\u4ee5\u4e0b\u662f\u5c07\u65e5\u671f\u683c\u5f0f\u5316\u70ba’yyyy-mm-dd’\u683c\u5f0f\u7684\u793a\u4f8b\uff1a<\/p>\n
var\n  FormattedDate: string;\nbegin\n  FormattedDate := FormatDateTime('yyyy-mm-dd', CurrentDate);\n  \/\/ \u73fe\u5728\u53ef\u4ee5\u5c07FormattedDate\u5beb\u5165\u6578\u64da\u5eab\nend;<\/code><\/pre>\n
4. \u932f\u8aa4\u8655\u7406<\/h2>\n
\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u932f\u8aa4\u8655\u7406\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u53ef\u4ee5\u4f7f\u7528try-except\u584a\u4f86\u6355\u7372\u53ef\u80fd\u767c\u751f\u7684\u7570\u5e38\u3002\u4ee5\u4e0b\u662f\u932f\u8aa4\u8655\u7406\u7684\u793a\u4f8b\uff1a<\/p>\n
try\n  Query.ExecSQL;\nexcept\n  on E: Exception do\n    ShowMessage('\u932f\u8aa4: ' + E.Message);\nend;<\/code><\/pre>\n
5. \u7e3d\u7d50<\/h2>\n
\u5728Delphi\u4e2d\u5beb\u5165\u65e5\u671f\u5230\u6578\u64da\u5eab\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u901a\u904e\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3001\u4f7f\u7528SQL\u8a9e\u53e5\u63d2\u5165\u65e5\u671f\u3001\u683c\u5f0f\u5316\u65e5\u671f\u4ee5\u53ca\u9032\u884c\u932f\u8aa4\u8655\u7406\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u65e5\u671f\u6578\u64da\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u9069\u7528\u65bcMySQL\uff0c\u9084\u53ef\u4ee5\u61c9\u7528\u65bc\u5176\u4ed6\u985e\u578b\u7684\u6578\u64da\u5eab\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u958b\u767c\u63d0\u4f9b\u7a69\u5b9a\u7684\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728Delphi\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u7684\u65e5\u671f\u5beb\u5165\uff0c\u7c21\u5316\u65e5\u671f\u8655\u7406\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61147","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61147"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61147\/revisions"}],"predecessor-version":[{"id":61148,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61147\/revisions\/61148"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}