QT5.7-為什么我用QString接收到格式錯誤的json值，但與std :: string完美匹配？

Question

我嘗試從Ruby On Rails中的API獲取json響應。

當我直接用curl或postman調用此url時，我得到一個完美的json響應。

當我將程序與在Static中編譯的QT5.7 Windows一起用於32位程序時，僅當使用std :: string時 ，我才能獲得完美的響應。

但是，如果我使用QDebug打印QString（） ，則會得到以下格式錯誤且奇怪的結果：

“{\\” 成功\\ “：真實的，\\” 文件\\ “：\\” C：/Perl/lib/pods/perlcn.pod \\”，\\ “C：/Perl/lib/pods/perldata.pod \\” ，\\ “C：/Perl/lib/pods/perldebguts.pod \\”，\\ “C：/Perl/lib/pods/perldelta.pod \\”，\\“C：/Perl/lib/pods/perldiag.pod \\ “\\ ”C：/Perl/lib/pods/perldoc.pod \\“，\\ ”C：/Perl/lib/pods/perldos.pod \\“，\\” C：/Perl/lib/pods/perldsc.pod \\ “\\ ”C：/Perl/lib/pods/perldtrace.pod \\“，\\ ”C：/Perl/lib/pods/perlebcdic.pod \\“，\\” C：/ Perl的/ LIB /莢/ perlembed。莢\\ “\\ ”C：/Perl/lib/pods/perlexperiment.pod \\“，\\ ”C：/Perl/lib/pods/perlfaq.pod \\“，\\” C：/ Perl的/ LIB /莢/ perlfaq1 .POD \\ “\\ ”C：/Perl/lib/pods/perlfaq2.pod \\“，\\ ”C：/Perl/lib/pods/perlfaq3.pod \\“，\\” C：/ Perl的/ LIB /莢/ perlfaq4.pod \\ “\\ ”C：/Perl/lib/pods/perlfaq5.pod \\“，\\ ”C：/Perl/lib/pods/perlfaq6.pod \\“，\\” C：/ Perl的/ LIB /莢/perlfaq7.pod\\",\\"C:/Perl/lib/pods/perlfaq8.pod\\",\\"C:/Perl/lib/pods/perlfaq9.pod\\",\\"C:/Perl/lib/莢/ perlfilter.pod \\ “\\ ”C：/Perl/lib/pods/perlfork.pod \\“，\\ ”C：/Perl/lib/pods/perlform.pod \\“，\\” C：/ Perl的/ lib中/pods/perlfreebsd.pod\\",\\"C:/Perl/lib/pods/perlfunc.pod\\",\\"C:/Perl/lib/pods/perlgit.pod\\",\\"C:/ Perl的/ lib目錄/莢/perlglossaîv

所以，如果我打印std :: string ，我有一個完美的json，正是我想要的：

{ “成功”：真正的 “文件”： “C：/Perl/lib/pods/perlcn.pod”， “C：/Perl/lib/pods/perldata.pod”，“C：/ Perl的/ lib目錄/莢/ perldebguts.pod “ ”C：/Perl/lib/pods/perldelta.pod“， ”C：/Perl/lib/pods/perldiag.pod“，” C：/Perl/lib/pods/perldoc.pod “ ”C：/Perl/lib/pods/perldos.pod“， ”C：/Perl/lib/pods/perldsc.pod“， ”C：/Perl/lib/pods/perldtrace.pod“，” C： /Perl/lib/pods/perlebcdic.pod","C:/Perl/lib/pods/perlembed.pod","C:/Perl/lib/pods/perlexperiment.pod","C:/Perl/lib/莢/ perlfaq.pod “ ”C：/Perl/lib/pods/perlfaq1.pod“， ”C：/Perl/lib/pods/perlfaq2.pod“，” C：/Perl/lib/pods/perlfaq3.pod “ ”C：/Perl/lib/pods/perlfaq4.pod“， ”C：/Perl/lib/pods/perlfaq5.pod“， ”C：/Perl/lib/pods/perlfaq6.pod“，” C： /Perl/lib/pods/perlfaq7.pod","C:/Perl/lib/pods/perlfaq8.pod","C:/Perl/lib/pods/perlfaq9.pod","C:/Perl/lib/莢/ perlfilter.pod “ ”C：/Perl/lib/pods/perlfork.pod“， ”C：/Perl/lib/pods/perlform.pod“，” C：/Perl/lib/pods/perlfreebsd.pod “ ”C：/Perl/lib/pods/perlfunc.pod“， ”C：/Perl/lib/pods/perlgit.pod“， ”C：/Perl/lib/pods/perlglossary.pod“，” C： /Perl/lib/pods/perlgpl.pod” ， “C：/Perl/lib/pods/perlguts.pod”， “C：/Perl/lib/pods/perlhack.pod”， “C：/Perl/lib/pods/perlhacktips.pod”，“C：/ Perl的/ lib目錄/莢/ perlhacktut.pod “ ”C：/Perl/lib/pods/perlhaiku.pod“， ”C：/Perl/lib/pods/perlhist.pod“，” C：/ Perl的/ lib目錄/莢/perlhpux.pod","C:/Perl/lib/pods/perlhurd.pod","C:/Perl/lib/pods/perlintern.pod","C:/Perl/lib/pods/perlinterp.pod” ， “C：/Perl/lib/pods/perlintro.pod”， “C：/Perl/lib/pods/perliol.pod”， “C：/Perl/lib/pods/perlipc.pod”，“C：/ Perl的/ lib目錄/莢/ perlirix.pod “ ”C：/Perl/lib/pods/perljp.pod“， ”C：/Perl/lib/pods/perlko.pod“，” C：/ Perl的/ lib目錄/莢/perllexwarn.pod","C:/Perl/lib/pods/perllinux.pod","C:/Perl/lib/pods/perllocale.pod","C:/Perl/lib/pods/perllol.pod” ， “C：/Perl/lib/pods/perlmacos.pod”， “C：/Perl/lib/pods/perlmacosx.pod”， “C：/Perl/lib/pods/perlmod.pod”，“C：/ Perl的/ lib目錄/莢/ perlmodinstall.pod “ ”C：/Perl/lib/pods/perlmodlib.pod“， ”C：/Perl/lib/pods/perlmodstyle.pod“，” C：/ Perl的/ lib目錄/莢/perlmroapi.pod","C:/Perl/lib/pods/perlnetware.pod","C:/Perl/lib/pods/perlnewmod.pod","C:/Perl/lib/pods/perlnumber.pod” ，“C：/ Perl的/ lib目錄/莢/ perlobj.pod “ ”C：/Perl/lib/pods/perlootut.pod“， ”C：/Perl/lib/pods/perlop.pod“，” C：/ Perl的/ lib目錄/莢/perlopenbsd.pod","C:/Perl/lib/pods/perlopentut.pod","C:/Perl/lib/pods/perlos2.pod","C:/Perl/lib/pods/perlos390.pod” ， “C：/Perl/lib/pods/perlos400.pod”， “C：/Perl/lib/pods/perlpacktut.pod”， “C：/Perl/lib/pods/perlperf.pod”，“C：/ Perl的/ lib目錄/莢/ perlplan9.pod “ ”C：/Perl/lib/pods/perlpod.pod“， ”C：/Perl/lib/pods/perlpodspec.pod“，” C：/ Perl的/ lib目錄/莢/perlpodstyle.pod","C:/Perl/lib/pods/perlpolicy.pod","C:/Perl/lib/pods/perlport.pod","C:/Perl/lib/pods/perlpragma.pod” ， “C：/Perl/lib/pods/perlqnx.pod”， “C：/Perl/lib/pods/perlre.pod”， “C：/Perl/lib/pods/perlreapi.pod”，“C：/ Perl的/ lib目錄/莢/ perlrebackslash.pod “ ”C：/Perl/lib/pods/perlrecharclass.pod“， ”C：/Perl/lib/pods/perlref.pod“，” C：/ Perl的/ lib目錄/莢/perlreftut.pod","C:/Perl/lib/pods/perlreguts.pod","C:/Perl/lib/pods/perlrepository.pod","C:/Perl/lib/pods/perlrequick.pod” ， “C：/Perl/lib/pods/perlreref.pod”， “C：/Perl/lib/pods/perlretut.pod”，“C：/Perl/lib/pods/perlriscos.po d “ ”C：/Perl/lib/pods/perlrun.pod“， ”C：/Perl/lib/pods/perlsec.pod“， ”C：/Perl/lib/pods/perlsolaris.pod“，” C ：/Perl/lib/pods/perlsource.pod “ ”C：/Perl/lib/pods/perlstyle.pod“， ”C：/Perl/lib/pods/perlsub.pod“，” C：/ Perl的/ lib中/pods/perlsymbian.pod","C:/Perl/lib/pods/perlsyn.pod","C:/Perl/lib/pods/perlsynology.pod","C:/Perl/lib/pods/perlthrtut。莢”]}

我不知道該怎么辦，因為我需要使用QString為QJsonDocument和QJsonObject解析我的json。

我嘗試了很多類似QNetworkAccessManager的方法

或（難以理解和調試的丑陋事物），例如： 外部卷曲

謝謝

Answer 1

您正在使用qDebug()來輸出stdout嗎？ 這不是它應該用於的目的。

它以調試格式顯示許多類型的當前內容。 對於QString這意味着用某些字符將引號引起來的字符串（包括雙引號）用\\進行轉義。 這並不意味着字符串本身包含轉義的數據。 它只是通過QDebug呈現給您的。