我陷入了一个不可能的境地。我有一个来自外太空的 JSON(他们无法更改它)。这是 JSON
{
user:'180111',
title:'I\'m sure "E pluribus unum" means \'Out of Many, One.\' \n\nhttp://en.wikipedia.org/wiki/E_pluribus_unum.\n\n\'',
date:'2007/01/10 19:48:38',
"id":"3322121",
"previd":112211,
"body":"\'You\' can \"read\" more here [url=http:\/\/en.wikipedia.org\/?search=E_pluribus_unum]E pluribus unum[\/url]'s. Cheers \\*/ :\/",
"from":"112221",
"username":"mikethunder",
"creationdate":"2007\/01\/10 14:04:49"
}
“它远不是有效的 JSON”，我说。他们的回答是“嗯!但是 Javascript 可以毫无怨言地阅读它”:
<html>
<script type="text/javascript">
var obj = {"PUT JSON FROM UP THERE HERE"};
document.write(obj.title);
document.write("<br />");
document.write(obj.creationdate + " " + obj.date);
document.write("<br />");
document.write(obj.body);
document.write("<br />");
</script>
<body>
</body>
</html>
问题
我应该通过 .NET(4) 读取和解析这个字符串，它破坏了 Json.org 的 C# 部分中提到的 14 个库中的 3 个。 (没有尝试其余的)。为了解决问题，我编写了以下函数来解决单引号和双引号的问题。
public static string JSONBeautify(string InStr){
bool inSingleQuote = false;
bool inDoubleQuote = false;
bool escaped = false;
StringBuilder sb = new StringBuilder(InStr);
sb = sb.Replace("`", "<°)))><"); // replace all instances of "grave accent" to "fish" so we can use that mark later.
// Hopefully there is no "fish" in our JSON
for (int i = 0; i < sb.Length; i++) {
switch (sb[i]) {
case '\\':
if (!escaped)
escaped = true;
else
escaped = false;
break;
case '\'':
if (!inSingleQuote && !inDoubleQuote) {
sb[i] = '"'; // Change opening single quote string markers to double qoute
inSingleQuote = true;
} else if (inSingleQuote && !escaped) {
sb[i] = '"'; // Change closing single quote string markers to double qoute
inSingleQuote = false;
} else if (escaped) {
escaped = false;
}
break;
case '"':
if (!inSingleQuote && !inDoubleQuote) {
inDoubleQuote = true; // This is a opening double quote string marker
} else if (inSingleQuote && !escaped) {
sb[i] = '`'; // Change unescaped double qoute to grave accent
} else if (inDoubleQuote && !escaped) {
inDoubleQuote = false; // This is a closing double quote string marker
} else if (escaped) {
escaped = false;
}
break;
default:
escaped = false;
break;
}
}
return sb.ToString()
.Replace("\\/", "/") // Remove all instances of escaped / (\/) .hopefully no smileys in string
.Replace("`", "\\\"") // Change all "grave accent"s to escaped double quote \"
.Replace("<°)))><", "`") // change all fishes back to "grave accent"
.Replace("\\'","'"); // change all escaped single quotes to just single quote
}
现在 JSONlint 只会提示属性名称，我可以使用 JSON.NET 和 SimpleJSON 库来解析以上 JSON。
问题
我确信我的代码不是修复上述 JSON 的最佳方式。 是否存在我的代码可能会中断的情况？有更好的方法吗？
最佳答案
您需要通过 JavaScript 运行它。在 .net 中启动 JavaScript 解析器。将字符串作为 JavaScript 的输入并使用 JavaScript 的原生 JSON.stringify 进行转换:
obj = {
"user":'180111',
"title":'I\'m sure "E pluribus unum" means \'Out of Many, One.\' \n\nhttp://en.wikipedia.org/wiki/E_pluribus_unum.\n\n',
"date":'2007/01/10 19:48:38',
"id":"3322121",
"previd":"112211",
"body":"\'You\' can \"read\" more here [url=http:\/\/en.wikipedia.org\/?search=E_pluribus_unum]E pluribus unum[\/url]'s. Cheers \\*/ :\/",
"from":"112221",
"username":"mikethunder",
"creationdate":"2007\/01\/10 14:04:49"
}
console.log(JSON.stringify(obj));
document.write(JSON.stringify(obj));请记住，您获得的字符串(或对象)不是有效的 JSON，并且无法使用 JSON 库进行解析。它需要先转换为有效的 JSON。但是它是有效的 JavaScript。
要完成这个答案:您可以在 .Net 中使用 JavaScriptSerializer。对于此解决方案，您需要以下程序集:
- System.Net
系统.Web.Script.序列化
var webClient = new WebClient(); string readHtml = webClient.DownloadString("uri to your source (extraterrestrial)"); var a = new JavaScriptSerializer(); Dictionary<string, object> results = a.Deserialize<Dictionary<string, object>>(readHtml);
关于javascript - 修复无效 JSON 的最有效方法，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28383478/