为什么会有无效的 JSON 格式？

Question

我正在构建JSON对象，并使用JQueryAjax将其传递给服务器。

data: "{'authorID' : '" + authorID +
      "', 'title' : '" + encodeURIComponent(blogTitle) +
      "', 'msg' : '" + encodeURIComponent(blogBody) +
      "', 'preview' : '" + encodeURIComponent(mediaContent) +
      "', 'layoutID' : '" + previewLayoutId +
      "', 'threadID' : '" + threadID + "'}"

但是，当我的blogBody变量包含'时，代码就会显示错误消息：

{"Message":"Invalid object passed in, \u0027:\u0027 or \u0027}\u0027 expected. (107): {\u0027authorID\u0027 : \u0027148385\u0027, \u0027title\u0027 : \u0027123213\u0027, \u0027msg\u0027 : \u0027%3Cp%3Eqqq%3C%2Fp%3E%3Cp%3E%3Cbr%3E%3C%2Fp%3E%3Cp%3E\u0027\u0027\u0027\u0027%3C%2Fp%3E\u0027, \u0027preview\u0027 : \u0027\u0027, \u0027layoutID\u0027 : \u00271\u0027, \u0027threadID\u0027 : \u00270\u0027}","StackTrace":"   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeDictionary(Int32 depth)
   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)
   at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)
   at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[T](String input)
   at System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest(HttpContext context, JavaScriptSerializer serializer)
   at System.Web.Script.Services.RestHandler.GetRawParams(WebServiceMethodData methodData, HttpContext context)
   at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.ArgumentException"}

有人能说出错误在哪里，以及如何修复吗？

Answer 1

In JSON, the keys must be quoted with double quotes ("), not single quotes ('). Similarly, string values must be in double, not single, quotes. You're using single quotes. For example, around authorId and around the text of the title.

So at a minimum, you need to swap those quotes around, e.g.:

data: '{"authorID" : "' + authorID +
      '", "title" : "' + encodeURIComponent(blogTitle) +
      '", "msg" : "' + encodeURIComponent(blogBody) +
      '", "preview" : "' + encodeURIComponent(mediaContent) +
      '", "layoutID" : "' + previewLayoutId +
      '", "threadID" : "' + threadID + '"}'