解析json时处理反斜杠 [英] Handling backslash when parsing json

问题描述

以下是我尝试调用JSON.parse的较大JSON字符串的一部分。我得到了臭名昭着的无效字符错误，因为（我相信）反斜杠括号（即路径：\ https://mysite.sharepoint.com/sites/Test \）。

Here is a portion of a larger JSON string that I attempting to call JSON.parse on. I am getting the infamous 'invalid character' error because (I believe) of the backslash parentheses (ie. "path:\"https://mysite.sharepoint.com/sites/Test\").

所有在线解析器我已经尝试了它的工作正常，但在我的javascript代码中JSON.parse方法失败。

All online parsers I have tried it on works fine but in my javascript code the JSON.parse method fails.

我试图像这样和其他方式清理字符串，但我一直在无法解析它。

I have attempted to clean the string like this and other ways but I have been unable to get it to parse.

var cleanData = data.replace(/\\"/, /\\\\/);

下面是部分JSON文件。当我从JSON字符串中删除它时，JSON.parse正常工作，所以我认为我已将此与此隔离。什么类型的通用清洁方法可以解决这个问题？ Thansk

below is the partial JSON file. When I remove it from the JSON string the JSON.parse works so I think I have this isolated to just this. What type of general purpose clean method would work to get this thing to parse? Thansk

'{"Properties" : {
    "GenerationId" : 9223372036854776000,
    "indexSystem" : "",
    "ExecutionTimeMs" : 109,
    "QueryModification" : "path:\"https://mysite.sharepoint.com/sites/Test\"  (IsDocument:\"True\" OR contentclass:\"STS_ListItem\") ContentTypeId:0x0120D5200098CBB075E51C8C4398ECCB4B4928912D*",
    "RenderTemplateId" : "~sitecollection/_catalogs/masterpage/Display Templates/Search/Group_Default.js",
    "StartRecord" : 0,
    "piPageImpressionBlockType" : 2
}}

如何？

推荐答案

问题是你的反斜杠被作为字符串中的转义字符吞下：

The problem is that your backslash is getting swallowed as an escape character in the string:

'\"' === '"' // true

实际上你需要转义反斜杠，以便JSON解析器看到它们。这是另一个例子：

You actually need to escape the backslashes, so that the JSON parser sees them. Here's another example:

var unencoded = 'string with "quotes"';

'"string with \"quotes\""'   === JSON.stringify(unencoded); // false
'"string with \\"quotes\\""' === JSON.stringify(unencoded); // true

但是，应该在哪里进行转义取决于JSON如何可用于JavaScript。如果JSON通过服务器端脚本嵌入到页面中，那么就不需要使用 JSON.parse ，因为有效的JSON是有效的JavaScript：

However, where the escaping should be done depends on how the JSON is being made available to the JavaScript. If the JSON is embedded in the page by a server-side script, then there's no need to use JSON.parse, as valid JSON is valid JavaScript:

// if JsonData is valid JSON, it's also a valid JavaScript object
var data = <%= JsonData %>; 

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