{"id":1326,"date":"2014-11-25T20:07:30","date_gmt":"2014-11-25T12:07:30","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=1326"},"modified":"2014-11-25T20:07:30","modified_gmt":"2014-11-25T12:07:30","slug":"qjson%e7%a4%ba%e4%be%8b-%e5%90%91qjson%e5%ae%9e%e4%be%8b%e4%b8%ad%e6%b7%bb%e5%8a%a0%e5%ad%90%e7%bb%93%e7%82%b9%e7%9a%84%e6%96%b9%e6%b3%95%e5%b0%8f%e7%bb%93","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=1326","title":{"rendered":"QJson\u793a\u4f8b-\u5411QJson\u5b9e\u4f8b\u4e2d\u6dfb\u52a0\u5b50\u7ed3\u70b9\u7684\u65b9\u6cd5\u5c0f\u7ed3"},"content":{"rendered":"<p>QJson\u4e2d\u6dfb\u52a0\u7ed3\u70b9\u4e3b\u8981\u6709\u4ee5\u4e0b3\u79cd\u65b9\u5f0f\uff1a<\/p>\n<p>1\u3001\u7528Add\u51fd\u6570<\/p>\n<p>\u5982\u6211\u4eec\u8981\u6dfb\u52a0\u4e00\u4e2a\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u5b50\u7ed3\u70b9\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">var\r\n   AJson:TQJson;\r\nbegin\r\nAJson:=TQJson.Create;\r\nAJson.Add('Name').AsString:='Jony smith';\r\n...\r\nFreeAndNil(AJson);\r\nend;<\/pre>\n<p>Add\u51fd\u6570\u6709\u5f88\u591a\u91cd\u8f7d\u5f62\u5f0f\uff0c\u6211\u4eec\u5148\u5927\u6982\u4e86\u89e3\u4e00\u4e0b\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">function Add(ANode: TQJson): Integer; overload;\r\nfunction Add: TQJson; overload;\r\nfunction Add(AName, AValue: QStringW;ADataType: TQJsonDataType = jdtUnknown): Integer; overload;\r\nfunction Add(const AName: QStringW; AItems: array of const): TQJson; overload;\r\nfunction Add(AName: QStringW; ADataType: TQJsonDataType): TQJson; overload;\r\nfunction Add(AName: QStringW; AValue: Extended): TQJson; overload;\r\nfunction Add(AName: QStringW; AValue: Int64): TQJson; overload;\r\nfunction Add(AName: QStringW; AValue: Boolean): TQJson; overload;\r\nfunction Add(AName: QStringW; AChild: TQJson): Integer; overload;\r\nfunction AddArray(AName: QStringW): TQJson; overload;\r\nfunction AddDateTime(AName: QStringW; AValue: TDateTime): TQJson; overload;\r\nfunction AddVariant(AName: QStringW; AValue: Variant): TQJson; overload;\r\nfunction Add(AName: QStringW): TQJson; overload; virtual;\r\n<\/pre>\n<p>\uff081\uff09\u662f\u76f4\u63a5\u6dfb\u52a0\u4e00\u4e2aJson\u7ed3\u70b9\u5230\u5f53\u524d\u7ed3\u70b9\u4e0b\uff0c\u4f20\u9012\u7684\u662f\u4e00\u4e2aJson\u7ed3\u70b9\u5bf9\u8c61\uff0c\u6ce8\u610f\u6dfb\u52a0\u540e\u8fd9\u4e2a\u7ed3\u70b9\u4e0d\u5e94\u8be5\u518d\u624b\u5de5\u91ca\u653e\u3002<\/p>\n<p>\uff082\uff09\u662f\u6dfb\u52a0\u4e00\u4e2a\u533f\u540d\u7684Json\u7ed3\u70b9\uff0c\u4e00\u822c\u7528\u4e8e\u6dfb\u52a0\u6570\u7ec4\u7684\u5b50\u5143\u7d20\uff0c\u56e0\u4e3a\u6570\u7ec4\u5143\u7d20\u662f\u6ca1\u6709\u540d\u79f0\u7684\u3002<\/p>\n<p>\uff083\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u548c\u5b57\u7b26\u4e32\u503c\u7684\u7ed3\u70b9\uff0c\u5176\u4e2d\uff0cAValue\u5bf9\u8c61\u7684\u503c\u7c7b\u578b\u7531ADataType\u53c2\u6570\u6307\u5b9a\uff0c<strong>\u5982\u679c\u672a\u6307\u5b9a\uff0c\u5219QJson\u4f1a\u81ea\u52a8\u68c0\u6d4b\u5e76\u8f6c\u6362\u4e3a\u5339\u914d\u7684\u7c7b\u578b\u3002<\/strong><\/p>\n<p>\uff084\uff09\u6dfb\u52a0\u4e00\u4e2a\u6570\u7ec4\u7ed3\u70b9\uff0c\u7ed3\u70b9\u7684\u503c\u4e3a\u4e00\u4e2a\u5f00\u653e\u6570\u7ec4\u3002\u5982\u4e0b\u9762\u7684\u4ee3\u7801\u5c31\u53ef\u4ee5\u76f4\u63a5\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a Array \u7684\u6570\u7ec4\u7ed3\u70b9\uff0c\u5176\u4e2d\u6709 4 \u4e2a\u5143\u7d20\uff0c\u5206\u522b\u662f\u6574\u6570 1 \uff0c\u5b57\u7b26\u4e32 goods \uff0c\u5e03\u5c14\u503c true \u548c\u6d6e\u70b9\u6570 3.4\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">AJson.Add('Array', [1, 'goods', true, 3.4]);<\/pre>\n<p>\uff085\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u548c\u7c7b\u578b\u7684\u7ed3\u70b9\u3002<\/p>\n<p>\uff086\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u548c\u503c\u7684\u6d6e\u70b9\u6570\u7ed3\u70b9\u3002<\/p>\n<p>\uff087\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u548c\u503c\u768464\u4f4d\u6574\u6570\u7ed3\u70b9\u3002<\/p>\n<p>\uff088\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u548c\u503c\u7684\u5e03\u5c14\u7ed3\u70b9\u3002<\/p>\n<p>\uff089\uff09\u5c06\u4e00\u4e2a\u5df2\u6709\u7684\u7ed3\u70b9\u4ee5\u6307\u5b9a\u7684\u540d\u79f0\u9644\u52a0\u5230\u5f53\u524d\u7ed3\u70b9\u4e0a\u3002<\/p>\n<p>\uff0810\uff09\u6dfb\u52a0\u4e00\u4e2a\u6570\u7ec4\u7c7b\u578b\u7684\u7ed3\u70b9\uff0c\u7b49\u4ef7\u4e8eAdd(AName,jdtArray)\u3002<\/p>\n<p>\uff0811\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u548c\u503c\u7684\u65e5\u671f\u65f6\u95f4\u7c7b\u578b\u7684\u7ed3\u70b9\u3002<\/p>\n<p>\uff0812\uff09\u6dfb\u52a0\u4e00\u4e2a\u53ef\u53d8\u7c7b\u578b\u7684\u5b50\u7ed3\u70b9\uff0c\u7c7b\u578b\u4f1a\u6839\u636eVariant\u503c\u7684\u5185\u5bb9\u81ea\u52a8\u786e\u5b9a\u3002<\/p>\n<p>\uff0813\uff09\u6dfb\u52a0\u4e00\u4e2a\u6307\u5b9a\u540d\u79f0\u7684\u7a7a\u767d\u5b50\u7ed3\u70b9\u3002\u8fd9\u662f\u6211\u4eec\u5e38\u7528\u7684\u4e00\u79cd\u65b9\u6cd5\uff0c\u7136\u540e\u901a\u8fc7AsXXX\u6765\u4e3a\u7ed3\u70b9\u8d4b\u503c\uff0c\u5982\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">AJson.Add('StringNode').AsString:='String Value';\r\nAJson.Add('IntNode').AsInteger:=100;\r\nAJson.Add('FloatNode').AsFloat:=1.34;<\/pre>\n<p>2\u3001\u4f7f\u7528ForcePath\u51fd\u6570\u6765\u786e\u4fdd\u6307\u5b9a\u7684\u8def\u5f84\u5b58\u5728\u3002<\/p>\n<p>ForcePath\u4f1a\u68c0\u67e5\u6307\u5b9a\u7684\u8def\u5f84\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u4f1a\u521b\u5efa\u6307\u5b9a\u7684\u8def\u5f84\u3002\u8def\u5f84\u7684\u5206\u9694\u7b26\u53ef\u4ee5\u662f \u201c.\u201d \u3001 \u201c\\\u201d \u3001 \u201c\/\u201d \u4e09\u8005\u4e4b\u4e00\uff0c\u4e24\u4e2a\u8fde\u7eed\u7684\u5206\u9694\u7b26\u4f1a\u88ab\u5ffd\u7565\u3002QJson\u7684\u8def\u5f84\u6309\u4ee5\u4e0b\u89c4\u5219\u5904\u7406\uff1a<\/p>\n<p>\uff081\uff09\u3001\u8def\u5f84\u59cb\u7ec8\u662f\u4ee5\u5f53\u524dJson\u7ed3\u70b9\u4e3a\u6839\u7ed3\u70b9\uff1b<\/p>\n<p>\uff082\uff09\u3001\u5bf9\u8c61\u6216\u8005\u6570\u7ec4\u90fd\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u65b9\u5f0f\u6765\u8bbf\u95ee\uff0c\u4e0b\u6807\u4ece0\u5f00\u59cb\u3002\u4f46\u5982\u679c\u7701\u7565\u6570\u7ec4\u7684\u7d22\u5f15\uff0c\u5219\u9ed8\u8ba4\u662f\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0c\u5982\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">AJson.ForcePath('a.b.c[].d').AsString:='OK';<\/pre>\n<p>\u5176\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<pre class=\"lang:js decode:true \">{\r\n  \"a\":{\r\n    \"b\":{\r\n      \"c\":[\r\n        {\r\n          \"d\":\"OK\"\r\n        }\r\n      ]\r\n    }\r\n  }\r\n}<\/pre>\n<p>\u53ef\u4ee5\u770b\u5230\uff0cc[].d\u5b9e\u9645\u88ab\u5f53\u6210\u4e86c[0].d\u3002<\/p>\n<p>3\u3001\u76f4\u63a5\u4f7f\u7528FromRtti\/FromRecord\u65b9\u5f0f\u6dfb\u52a0\u3002<\/p>\n<p>\u6b64\u7ec4\u51fd\u6570\u662f\u57fa\u4e8eRTTI\u6765\u81ea\u52a8\u5c06\u7ed3\u6784\u4f53\u6216\u5bf9\u8c61\u7684\u6570\u636e\u751f\u6210\u5bf9\u5e94\u7684Json\u7ed3\u6784\uff0c\u6ce8\u610f\u4e00\u70b9\uff0c\u5bf9\u8c61\u53ea\u4f1a\u5904\u7406\u5b83\u7684published\u6210\u5458\uff0c\u800c\u7ed3\u6784\u662f\u5904\u7406\u6240\u6709\u7684\u6210\u5458\u3002\u65e0\u8bba\u5bf9\u8c61\u548c\u7ed3\u6784\u4f53\uff0c\u4e0d\u8981\u51fa\u73b0\u5faa\u73af\u5b9a\u4e49\u7684\u60c5\u51b5\uff0c\u5426\u5219\u4f1a\u51fa\u73b0\u5185\u5b58\u6216\u5806\u6808\u6ea2\u51fa\u3002<\/p>\n<pre class=\"lang:delphi decode:true\">var\r\n  ARec: TRttiTestSubRecord;\r\n  AJson: TQJson;\r\nbegin\r\nARec.Int64Val := 1;\r\nARec.UInt64Val := 2;\r\nARec.UStr := 'Test String';\r\nARec.AStr := 'AnsiString';\r\nARec.SStr := 'ShortString';\r\nARec.IntVal := 3;\r\nARec.MethodVal := Button2Click;\r\nARec.SetVal := [{$IFDEF UNICODE}TBorderIcon.{$ENDIF}biSystemMenu];\r\nARec.WordVal := 4;\r\nARec.ByteVal := 5;\r\nARec.ObjVal := Button2;\r\nARec.DtValue := Now;\r\nARec.tmValue := Time;\r\nARec.dValue := Now;\r\nARec.CardinalVal := 6;\r\nARec.ShortVal := 7;\r\nARec.CurrVal := 8.9;\r\nARec.EnumVal := {$IFDEF UNICODE}TAlign.{$ENDIF}alTop;\r\nARec.CharVal := 'A';\r\nARec.VarVal := VarArrayOf(['VariantArray', 1, 2.5, true, false]);\r\nSetLength(ARec.ArrayVal, 3);\r\nARec.ArrayVal[0] := 100;\r\nARec.ArrayVal[1] := 101;\r\nARec.ArrayVal[2] := 102;\r\nSetLength(ARec.IntArray, 2);\r\nARec.IntArray[0] := 300;\r\nARec.IntArray[1] := 200;\r\nAJson := TQJson.Create;\r\ntry\r\n  AJson.Add('Record').FromRecord&lt;TRttiTestSubRecord&gt;(ARec);\r\nfinally\r\n  FreeAndNil(AJson);\r\nend;\r\nend;<\/pre>\n<p>\u5728\u4f7f\u7528\u6b64\u79cd\u65b9\u5f0f\u6dfb\u52a0\u7ed3\u70b9\u65f6\uff0c\u76f8\u5173\u6ce8\u610f\u4e8b\u9879\u8bf7\u53c2\u8003\u6587\u7ae0\uff1a<a title=\"QJson\/QMsgPack RTTI \u6ce8\u610f\u4e8b\u9879\" href=\"https:\/\/blog.qdac.cc\/?p=1305\" target=\"_blank\">QJson\/QMsgPack RTTI \u6ce8\u610f\u4e8b\u9879<\/a>\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>QJson\u4e2d\u6dfb\u52a0\u7ed3\u70b9\u4e3b\u8981\u6709\u4ee5\u4e0b3\u79cd\u65b9\u5f0f\uff1a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[69,8,7],"tags":[186],"class_list":["post-1326","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-qjson","tag-186"],"views":6803,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1326"}],"version-history":[{"count":2,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1326\/revisions"}],"predecessor-version":[{"id":1328,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/1326\/revisions\/1328"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}