{"id":61151,"date":"2024-10-13T08:51:16","date_gmt":"2024-10-13T00:51:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61151\/"},"modified":"2024-10-13T08:51:16","modified_gmt":"2024-10-13T00:51:16","slug":"delphi%e5%af%a6%e7%8f%be%e6%94%af%e6%8c%81%e5%a4%9a%e7%b7%9a%e7%a8%8b%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-delphi-%e5%a4%9a%e7%b7%9a%e7%a8%8b%e6%9f%a5%e8%a9%a2%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61151\/","title":{"rendered":"Delphi\u5be6\u73fe\u652f\u6301\u591a\u7dda\u7a0b\u67e5\u8a62\u6578\u64da\u5eab\u9023\u63a5 (delphi \u591a\u7dda\u7a0b\u67e5\u8a62\u6578\u64da\u5eab\u9023\u63a5)"},"content":{"rendered":"<h1 id=\"delphi%e5%af%a6%e7%8f%be%e6%94%af%e6%8c%81%e5%a4%9a%e7%b7%9a%e7%a8%8b%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-PYTRVLAHTJ\">Delphi\u5be6\u73fe\u652f\u6301\u591a\u7dda\u7a0b\u67e5\u8a62\u6578\u64da\u5eab\u9023\u63a5<\/h1>\n<p>\u5728\u73fe\u4ee3\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u4e2d\uff0c\u591a\u7dda\u7a0b\u6280\u8853\u5df2\u6210\u70ba\u63d0\u5347\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u7684\u91cd\u8981\u624b\u6bb5\u3002\u7279\u5225\u662f\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\uff0c\u4f7f\u7528\u591a\u7dda\u7a0b\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u6e1b\u5c11\u7528\u6236\u7b49\u5f85\u6642\u9593\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Delphi\u4e2d\u5be6\u73fe\u652f\u6301\u591a\u7dda\u7a0b\u7684\u6578\u64da\u5eab\u67e5\u8a62\u9023\u63a5\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e7%b7%9a%e7%a8%8b%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-PYTRVLAHTJ\">\u591a\u7dda\u7a0b\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u591a\u7dda\u7a0b\u662f\u6307\u5728\u540c\u4e00\u7a0b\u5e8f\u4e2d\u540c\u6642\u904b\u884c\u591a\u500b\u7dda\u7a0b\u3002\u6bcf\u500b\u7dda\u7a0b\u53ef\u4ee5\u7368\u7acb\u57f7\u884c\u4efb\u52d9\uff0c\u9019\u6a23\u53ef\u4ee5\u5145\u5206\u5229\u7528\u591a\u6838\u8655\u7406\u5668\u7684\u6027\u80fd\u3002\u5728\u6578\u64da\u5eab\u67e5\u8a62\u4e2d\uff0c\u4f7f\u7528\u591a\u7dda\u7a0b\u53ef\u4ee5\u8b93\u61c9\u7528\u7a0b\u5e8f\u5728\u7b49\u5f85\u6578\u64da\u5eab\u8fd4\u56de\u7d50\u679c\u7684\u540c\u6642\uff0c\u7e7c\u7e8c\u8655\u7406\u5176\u4ed6\u8acb\u6c42\u3002<\/p>\n<h2 id=\"delphi%e4%b8%ad%e7%9a%84%e5%a4%9a%e7%b7%9a%e7%a8%8b%e5%af%a6%e7%8f%be-PYTRVLAHTJ\">Delphi\u4e2d\u7684\u591a\u7dda\u7a0b\u5be6\u73fe<\/h2>\n<p>\u5728Delphi\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528TThread\u985e\u4f86\u5275\u5efa\u548c\u7ba1\u7406\u7dda\u7a0b\u3002\u4ee5\u4e0b\u662f\u5be6\u73fe\u591a\u7dda\u7a0b\u67e5\u8a62\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%89%b5%e5%bb%ba%e4%b8%80%e5%80%8b%e6%96%b0%e7%9a%84%e7%b7%9a%e7%a8%8b%e9%a1%9e-PYTRVLAHTJ\">1. \u5275\u5efa\u4e00\u500b\u65b0\u7684\u7dda\u7a0b\u985e<\/h3>\n<pre><code>type\n  TDatabaseQueryThread = class(TThread)\n  private\n    FQuery: string;\n    FResult: TStringList;\n  protected\n    procedure Execute; override;\n  public\n    constructor Create(const AQuery: string);\n    property Result: TStringList read FResult;\n  end;\n\nconstructor TDatabaseQueryThread.Create(const AQuery: string);\nbegin\n  inherited Create(True); \/\/ Create suspended\n  FQuery := AQuery;\n  FResult := TStringList.Create;\nend;\n\nprocedure TDatabaseQueryThread.Execute;\nbegin\n  \/\/ \u5728\u9019\u88e1\u57f7\u884c\u6578\u64da\u5eab\u67e5\u8a62\n  \/\/ \u5047\u8a2d\u4f7f\u7528\u67d0\u500b\u6578\u64da\u5eab\u7d44\u4ef6\u9032\u884c\u67e5\u8a62\n  \/\/ \u4f8b\u5982\uff1aFDQuery1.SQL.Text := FQuery;\n  \/\/ FDQuery1.Open;\n  \/\/ FResult.Assign(FDQuery1.Fields);\nend;\n<\/code><\/pre>\n<h3 id=\"2-%e5%95%9f%e5%8b%95%e7%b7%9a%e7%a8%8b-PYTRVLAHTJ\">2. \u555f\u52d5\u7dda\u7a0b<\/h3>\n<p>\u5728\u4e3b\u7a0b\u5e8f\u4e2d\uff0c\u53ef\u4ee5\u5275\u5efa\u4e26\u555f\u52d5\u9019\u500b\u7dda\u7a0b\uff1a<\/p>\n<pre><code>var\n  QueryThread: TDatabaseQueryThread;\nbegin\n  QueryThread := TDatabaseQueryThread.Create('SELECT * FROM MyTable');\n  QueryThread.Start; \/\/ \u555f\u52d5\u7dda\u7a0b\nend;\n<\/code><\/pre>\n<h3 id=\"3-%e7%8d%b2%e5%8f%96%e6%9f%a5%e8%a9%a2%e7%b5%90%e6%9e%9c-PYTRVLAHTJ\">3. \u7372\u53d6\u67e5\u8a62\u7d50\u679c<\/h3>\n<p>\u7576\u7dda\u7a0b\u57f7\u884c\u5b8c\u7562\u5f8c\uff0c\u53ef\u4ee5\u901a\u904e\u7dda\u7a0b\u7684\u5c6c\u6027\u4f86\u7372\u53d6\u67e5\u8a62\u7d50\u679c\uff1a<\/p>\n<pre><code>if QueryThread.Finished then\nbegin\n  \/\/ \u7372\u53d6\u7d50\u679c\n  ShowMessage(QueryThread.Result.Text);\nend;\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-PYTRVLAHTJ\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u7dda\u7a0b\u5b89\u5168\uff1a<\/strong>\u5728\u591a\u7dda\u7a0b\u74b0\u5883\u4e2d\uff0c\u5fc5\u9808\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u3002\u53ef\u4ee5\u4f7f\u7528\u81e8\u754c\u5340\uff08TCriticalSection\uff09\u4f86\u4fdd\u8b77\u5171\u4eab\u8cc7\u6e90\u3002<\/li>\n<li><strong>\u7570\u5e38\u8655\u7406\uff1a<\/strong>\u5728Execute\u65b9\u6cd5\u4e2d\uff0c\u61c9\u8a72\u6dfb\u52a0\u7570\u5e38\u8655\u7406\u4ee3\u78bc\uff0c\u4ee5\u9632\u6b62\u7dda\u7a0b\u56e0\u70ba\u672a\u8655\u7406\u7684\u7570\u5e38\u800c\u7d42\u6b62\u3002<\/li>\n<li><strong>UI\u66f4\u65b0\uff1a<\/strong>\u5982\u679c\u9700\u8981\u5728\u4e3b\u754c\u9762\u4e0a\u66f4\u65b0UI\uff0c\u61c9\u8a72\u4f7f\u7528TThread.Synchronize\u6216TThread.Queue\u65b9\u6cd5\u4f86\u78ba\u4fdd\u7dda\u7a0b\u5b89\u5168\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-PYTRVLAHTJ\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u4f7f\u7528Delphi\u7684\u591a\u7dda\u7a0b\u6280\u8853\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6578\u64da\u5eab\u67e5\u8a62\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5920\u6e1b\u5c11\u7528\u6236\u7684\u7b49\u5f85\u6642\u9593\uff0c\u9084\u80fd\u5920\u5145\u5206\u5229\u7528\u7cfb\u7d71\u8cc7\u6e90\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u4e0d\u65b7\u589e\u9577\uff0c\u638c\u63e1\u591a\u7dda\u7a0b\u7de8\u7a0b\u5c07\u6210\u70ba\u958b\u767c\u8005\u7684\u4e00\u9805\u91cd\u8981\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u548c\u64f4\u5c55\u60a8\u7684\u670d\u52d9\u5668\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Delphi\u4e2d\u5be6\u73fe\u591a\u7dda\u7a0b\u67e5\u8a62\u6578\u64da\u5eab\u9023\u63a5\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\u8207\u6548\u7387\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u8655\u7406\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-61151","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61151","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=61151"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61151\/revisions"}],"predecessor-version":[{"id":61152,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61151\/revisions\/61152"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}