我有一个很大的网址，我使用System.Web.HttpUtility.UrlEncode进行编码。当我编码它时，它不像我的工作示例那样编码。我不确定问题是什么，可能是不同的字符类型或者其他东西，我举了一个假设要创建的内容和实际创建内容的示例。谢谢你的帮助，我迷失了这个。
工作exmaple（看看这个怎么做了％252Citag％252而另一个没有）
22％7Chttp％3A％2F％2Fv17.nonxt1.googlevideo.com％2Fvideoplayback％3Fid％3D0b608733ae5257c3％26itag％3D22％26source％3Dpicasa％26ip％3D0.0.0.0％26ipbits％3D0％26expire％3D1333533157％26sparams ％3Did％252Citag％252Csource％252Cip％252Cipbits％252Cexpire％26signature％3D8AD67D74F34FBAFBBA87616C0AED4A336DF0982A.129E2B5E648F8A2F35A34F312AC5C3C957A1C40A％26key％3Dlh1％2C35％7Chttp％3A％2F％2Fv18.nonxt3.googlevideo.com％2Fvideoplayback％3Fid％3D0b608733ae5257c3％26itag％3D35％26source ％3Dpicasa％26ip％3D0.0.0.0％26ipbits％3D0％26expire％3D1333533157％26sparams％3Did％252Citag％252Csource％252Cip％252Cipbits％252Cexpire％26signature％3D7A58A11994C710872E945D0EAA6E43B6BFB8A648.B9C1D9FB377E1A49EBF3DC6C166C0B6E3E94EC24％26key％3Dlh1％2C34％7Chttp％3A％2F ％2Fv6.nonxt1.googlevideo.com％2Fvideoplayback％3Fid％3D0b608733ae5257c3％26itag％3D34％26source％3Dpicasa％26ip％3D0.0.0.0％26ipbits％3D0％26expire％3D1333533157％26sparams％3Did％252Citag％252Csource％252Cip％252Cipbits ％252Cexpire％26signature％3D260B10850A3448C849B8B8F1F2AF5E31244E71BC.6D7420FD66B85D40982BFB2C847EDB46021C 63AE％26key％3Dlh1％2C5％7Chttp％3A％2F％2Fv23.nonxt7.googlevideo.com％2Fvideoplayback％3Fid％3D0b608733ae5257c3％26itag％3D5％26source％3Dpicasa％26ip％3D0.0.0.0％26ipbits％3D0％26expire％ 3D1333533157％26sparams％3Did％252Citag％252Csource％252Cip％252Cipbits％252Cexpire％26signature％3D9894DCDA7D2634EE0006CE0F6E0E29ABF7A8F253.18765D7CD7BDE80ED1A47DC8EC559C3E05C92F56％26key％3Dlh1
以下是我正在创建的示例（请参阅此编码为％2citag％2）
5％7chttp％3A％2F％2fv23.nonxt7.googlevideo.com％2fvideoplayback％3fid％3d0b608733ae5257c3％26itag％3D5％26source％3dpicasa％26ip％3d0.0.0.0％26ipbits％3D0％26expire％3d1333562840％26sparams ％3did％2citag％2csource％2cip％2cipbits％2cexpire％26signature％3dC0E2993011931D9F5FCAFAF54E821415F6042DDD.477CD23B021563A6DE30E858E35C21046E0B0BA6％26key％3dlh1％2c18％7chttp％3A％2F％2fv11.nonxt4.googlevideo.com％2fvideoplayback％3fid％3d0b608733ae5257c3％26itag％3D18％26source ％3dpicasa％26ip％3d0.0.0.0％26ipbits％3D0％26expire％3d1333562840％26sparams％3did％2citag％2csource％2cip％2cipbits％2cexpire％26signature％3d696501A8ACBA0E1246173B040E0FB81DA8EBCDC7.944BA6C08C630EFFC2456D66BAD12376D7E377B2％26key％3dlh1％2c34％7chttp％3A％2F ％2fv6.nonxt1.googlevideo.com％2fvideoplayback％3fid％3d0b608733ae5257c3％26itag％3d34％26source％3dpicasa％26ip％3d0.0.0.0％26ipbits％3D0％26expire％3d1333562840％26sparams％3did％2citag％2csource％2cip％2cipbits ％2cexpire％26signature％3dDDD3D9081F7F2FF462D17CFAE6CAB72AEB86DEA9.3275E0EE8921EF728132035FC94BEF5926A0B7C1％26key％3dlh1％2C35％7chttp％3A％ 2F％2fv18.nonxt3.googlevideo.com％2fvideoplayback％3fid％3d0b608733ae5257c3％26itag％3d35％26source％3dpicasa％26ip％3d0.0.0.0％26ipbits％3D0％26expire％3d1333562840％26sparams％3did％2citag％2csource％2cip％ 2cipbits％2cexpire％26signature％3d7826E7470450F9F473BC7A845967EF3AC655CFB.3850F952F5D68151D325CD754C581CD66B0BC4D7％26key％3dlh1％2C22％7chttp％3A％2F％2fv17.nonxt1.googlevideo.com％2fvideoplayback％3fid％3d0b608733ae5257c3％26itag％3D22％26source％3dpicasa％26ip％3d0.0.0。 0％26ipbits％3D0％26expire％3d1333562840％26sparams％3did％2citag％2csource％2cip％2cipbits％2cexpire％26signature％3d32FAAE6AE74B22BFB3DBD4300CEEDBC1A12A9ED4.8014678ABB1AEE93FB4B1C36E2C74C89102DC112％26key％3dlh1
答案 0 :(得分：2)
在第一个示例中，URL是双重编码的。这意味着如果你看一下解码的sparams参数，它就表示为
sparams = ID％2Citag％2Csource％2Cip％2Cipbits％2Cexpire
在你的第二个例子中
sparams = ID，ITAG，源，IP，ipbits，到期
所以，第一个例子中发生的事情是，他们首先在值上做一个UrlEncode。使用此值构造URL，然后在构造的URL上执行UrlEncode。
更新：如果您的查询字符串的值包含需要进行UrlEncoded的值（例如，＆amp; space？etc）
，则这是一般做法。答案 1 :(得分：0)
根据w3c标准，你的例子很好。没有％252符号。
答案 2 :(得分：0)
我不确定你到底想要什么，但当你将这些字符串发送到URL Decoder时，这就是你得到的：
字符串1
22|http://v17.nonxt1.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=22&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333533157&sparams=id%2Citag%2Csource%2Cip%2Cipbits%2Cexpire&signature=8AD67D74F34FBAFBBA87616C0AED4A336DF0982A.129E2B5E648F8A2F35A34F312AC5C3C957A1C40A&key=lh1,35|http://v18.nonxt3.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=35&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333533157&sparams=id%2Citag%2Csource%2Cip%2Cipbits%2Cexpire&signature=7A58A11994C710872E945D0EAA6E43B6BFB8A648.B9C1D9FB377E1A49EBF3DC6C166C0B6E3E94EC24&key=lh1,34|http://v6.nonxt1.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=34&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333533157&sparams=id%2Citag%2Csource%2Cip%2Cipbits%2Cexpire&signature=260B10850A3448C849B8B8F1F2AF5E31244E71BC.6D7420FD66B85D40982BFB2C847EDB46021C63AE&key=lh1,5|http://v23.nonxt7.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=5&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333533157&sparams=id%2Citag%2Csource%2Cip%2Cipbits%2Cexpire&signature=9894DCDA7D2634EE0006CE0F6E0E29ABF7A8F253.18765D7CD7BDE80ED1A47DC8EC559C3E05C92F56&key=lh1
字符串2
5|http://v23.nonxt7.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=5&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333562840&sparams=id,itag,source,ip,ipbits,expire&signature=C0E2993011931D9F5FCAFAF54E821415F6042DDD.477CD23B021563A6DE30E858E35C21046E0B0BA6&key=lh1,18|http://v11.nonxt4.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=18&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333562840&sparams=id,itag,source,ip,ipbits,expire&signature=696501A8ACBA0E1246173B040E0FB81DA8EBCDC7.944BA6C08C630EFFC2456D66BAD12376D7E377B2&key=lh1,34|http://v6.nonxt1.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=34&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333562840&sparams=id,itag,source,ip,ipbits,expire&signature=DDD3D9081F7F2FF462D17CFAE6CAB72AEB86DEA9.3275E0EE8921EF728132035FC94BEF5926A0B7C1&key=lh1,35|http://v18.nonxt3.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=35&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333562840&sparams=id,itag,source,ip,ipbits,expire&signature=7826E7470450F9F473BC7A845967EF3AC655CFB.3850F952F5D68151D325CD754C581CD66B0BC4D7&key=lh1,22|http://v17.nonxt1.googlevideo.com/videoplayback?id=0b608733ae5257c3&itag=22&source=picasa&ip=0.0.0.0&ipbits=0&expire=1333562840&sparams=id,itag,source,ip,ipbits,expire&signature=32FAAE6AE74B22BFB3DBD4300CEEDBC1A12A9ED4.8014678ABB1AEE93FB4B1C36E2C74C89102DC112&key=lh1
你的URL是完全不同的，他们也有一个我不确定你想要的领先字符。