{"id":166043,"date":"2024-11-05T15:15:22","date_gmt":"2024-11-05T07:15:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166043\/"},"modified":"2024-11-05T15:15:23","modified_gmt":"2024-11-05T07:15:23","slug":"%e5%bf%ab%e9%80%9f%e4%ba%86%e8%a7%a3delphi%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e7%9c%8b%e6%8a%80%e5%b7%a7-delphi-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e7%9c%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166043\/","title":{"rendered":"\u5feb\u901f\u4e86\u89e3Delphi\u6578\u64da\u5eab\u67e5\u770b\u6280\u5de7 (delphi \u6578\u64da\u5eab\u67e5\u770b)"},"content":{"rendered":"

\u5feb\u901f\u4e86\u89e3Delphi\u6578\u64da\u5eab\u67e5\u770b\u6280\u5de7<\/h1>\n

Delphi\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u684c\u9762\u548c\u79fb\u52d5\u61c9\u7528\u7a0b\u5e8f\u7684\u958b\u767c\u3002\u5c0d\u65bc\u9700\u8981\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u638c\u63e1\u6578\u64da\u5eab\u67e5\u770b\u6280\u5de7\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5728Delphi\u4e2d\u67e5\u770b\u6578\u64da\u5eab\u7684\u57fa\u672c\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n

1. \u4e86\u89e3\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n

\u5728\u958b\u59cb\u67e5\u770b\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002Delphi\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u5eab\u9023\u63a5\u7d44\u4ef6\uff0c\u5982FireDAC\u3001BDE\u548cADO\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528FireDAC\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n

var\n  FDConnection: TFDConnection;\nbegin\n  FDConnection := TFDConnection.Create(nil);\n  try\n    FDConnection.DriverName := 'MySQL';\n    FDConnection.Params.Add('Database=your_database');\n    FDConnection.Params.Add('User_Name=your_username');\n    FDConnection.Params.Add('Password=your_password');\n    FDConnection.Params.Add('Server=localhost');\n    FDConnection.Connected := True;\n  finally\n    FDConnection.Free;\n  end;\nend;<\/code><\/pre>\n
2. \u4f7f\u7528\u67e5\u8a62\u7d44\u4ef6<\/h2>\n
\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u67e5\u8a62\u7d44\u4ef6\u4f86\u57f7\u884cSQL\u67e5\u8a62\u3002FireDAC\u63d0\u4f9b\u4e86TFDQuery\u7d44\u4ef6\uff0c\u9019\u662f\u4e00\u500b\u975e\u5e38\u9748\u6d3b\u7684\u67e5\u8a62\u5de5\u5177\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528TFDQuery\u57f7\u884c\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n
var\n  FDQuery: TFDQuery;\nbegin\n  FDQuery := TFDQuery.Create(nil);\n  try\n    FDQuery.Connection := FDConnection; \/\/ \u4f7f\u7528\u4e4b\u524d\u5efa\u7acb\u7684\u9023\u63a5\n    FDQuery.SQL.Text := 'SELECT * FROM your_table';\n    FDQuery.Open; \/\/ \u57f7\u884c\u67e5\u8a62\u4e26\u6253\u958b\u7d50\u679c\u96c6\n\n    while not FDQuery.Eof do\n    begin\n      \/\/ \u8655\u7406\u6bcf\u4e00\u884c\u6578\u64da\n      ShowMessage(FDQuery.FieldByName('your_field').AsString);\n      FDQuery.Next; \/\/ \u79fb\u52d5\u5230\u4e0b\u4e00\u884c\n    end;\n  finally\n    FDQuery.Free;\n  end;\nend;<\/code><\/pre>\n
3. \u6578\u64da\u986f\u793a\u8207\u7de8\u8f2f<\/h2>\n
\u5728Delphi\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u6578\u64da\u96c6\u7d44\u4ef6\uff08\u5982TDataSet\u3001TDataSource\u548cTDBGrid\uff09\u4f86\u986f\u793a\u548c\u7de8\u8f2f\u6578\u64da\u3002\u9019\u4e9b\u7d44\u4ef6\u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u67e5\u8a62\u7d50\u679c\u7d81\u5b9a\u5230\u7528\u6236\u754c\u9762\u4e0a\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5c07TFDQuery\u7684\u7d50\u679c\u7d81\u5b9a\u5230TDBGrid\u7684\u793a\u4f8b\uff1a<\/p>\n
var\n  DataSource: TDataSource;\n  DBGrid: TDBGrid;\nbegin\n  DataSource := TDataSource.Create(nil);\n  try\n    DataSource.DataSet := FDQuery; \/\/ \u5c07\u67e5\u8a62\u7d50\u679c\u7d81\u5b9a\u5230\u6578\u64da\u6e90\n    DBGrid.DataSource := DataSource; \/\/ \u5c07\u6578\u64da\u6e90\u7d81\u5b9a\u5230DBGrid\n  finally\n    DataSource.Free;\n  end;\nend;<\/code><\/pre>\n
4. \u6578\u64da\u904e\u6ffe\u8207\u6392\u5e8f<\/h2>\n
\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u904e\u6ffe\u548c\u6392\u5e8f\u529f\u80fd\u975e\u5e38\u91cd\u8981\u3002TFDQuery\u652f\u6301\u4f7f\u7528SQL\u8a9e\u53e5\u9032\u884c\u904e\u6ffe\u548c\u6392\u5e8f\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u904e\u6ffe\u548c\u6392\u5e8f\u6578\u64da\uff1a<\/p>\n
FDQuery.SQL.Text := 'SELECT * FROM your_table WHERE your_field = :value ORDER BY another_field';\nFDQuery.ParamByName('value').AsString := 'some_value';\nFDQuery.Open;<\/code><\/pre>\n
5. \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\u3002Delphi\u63d0\u4f9b\u4e86\u7570\u5e38\u8655\u7406\u6a5f\u5236\uff0c\u53ef\u4ee5\u6355\u7372\u548c\u8655\u7406\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u7684\u932f\u8aa4\u3002\u4ee5\u4e0b\u662f\u932f\u8aa4\u8655\u7406\u7684\u793a\u4f8b\uff1a<\/p>\n
try\n  FDQuery.Open;\nexcept\n  on E: Exception do\n    ShowMessage('\u932f\u8aa4: ' + E.Message);\nend;<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u638c\u63e1Delphi\u6578\u64da\u5eab\u67e5\u770b\u6280\u5de7\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5\u3001\u4f7f\u7528\u67e5\u8a62\u7d44\u4ef6\u3001\u986f\u793a\u548c\u7de8\u8f2f\u6578\u64da\u3001\u9032\u884c\u6578\u64da\u904e\u6ffe\u8207\u6392\u5e8f\uff0c\u4ee5\u53ca\u6709\u6548\u7684\u932f\u8aa4\u8655\u7406\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u7ba1\u7406\u6578\u64da\u3002\u9019\u4e9b\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u589e\u5f37\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Delphi\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5feb\u901f\u4e86\u89e3Delphi\u6578\u64da\u5eab\u67e5\u770b\u6280\u5de7\uff0c\u638c\u63e1\u9ad8\u6548\u67e5\u8a62\u8207\u6578\u64da\u7ba1\u7406\u65b9\u6cd5\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\uff0c\u7c21\u5316\u6578\u64da\u64cd\u4f5c\u6d41\u7a0b\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-166043","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166043","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=166043"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166043\/revisions"}],"predecessor-version":[{"id":166044,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166043\/revisions\/166044"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166043"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166043"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}