假设这个问题与轻松编辑文本文件，然后手动将它们转换为json有关，我发现了两个解决方案:

hjson (that was mentioned in this previous answer), in which case you can convert your existing json file to hjson format by executing hjson source.json > target.hjson, edit in your favorite editor, and convert back to json hjson -j target.hjson > source.json. You can download the binary here or use the online conversion here. jsonnet, which does the same, but with a slightly different format (single and double quoted strings are simply allowed to span multiple lines). Conveniently, the homepage has editable input fields so you can simply insert your multiple line json/jsonnet files there and they will be converted online to standard json immediately. Note that jsonnet supports much more goodies for templating json files, so it may be useful to look into, depending on your needs.

假设这个问题与轻松编辑文本文件，然后手动将它们转换为json有关，我发现了两个解决方案:

hjson (that was mentioned in this previous answer), in which case you can convert your existing json file to hjson format by executing hjson source.json > target.hjson, edit in your favorite editor, and convert back to json hjson -j target.hjson > source.json. You can download the binary here or use the online conversion here. jsonnet, which does the same, but with a slightly different format (single and double quoted strings are simply allowed to span multiple lines). Conveniently, the homepage has editable input fields so you can simply insert your multiple line json/jsonnet files there and they will be converted online to standard json immediately. Note that jsonnet supports much more goodies for templating json files, so it may be useful to look into, depending on your needs.

如果只是为了在编辑器中显示，你可以使用'代替'或'

const obj = {
myMultiLineString: `This is written in a \
multiline way. \
The backside of it is that you \
can't use indentation on every new \
line because is would be included in \
your string. \
The backslash after each line escapes the carriage return. 
`
}

例子:

console.log(`First line \
Second line`);

将放在控制台: 一线二线

console.log(`First line 
second line`);

将放在控制台: 第一行 第二行

希望这回答了你的问题。

JSON不允许真正的换行。您需要将所有换行符替换为\n。

eg:

"first line
second line"

可以通过以下方式保存:

“一线/二线”

注意:

对于Python，这应该写成:

“一线、二线”

\\是用来转义反斜杠的，否则python会把\n当作 控制字符“new line”

我曾经在一个小型Node.js项目中这样做过，并发现这个变通方法可以将多行字符串存储为行数组，使其更易于人类阅读(代价是稍后将它们转换为字符串的额外代码):

{
 "modify_head": [

  "<script type='text/javascript'>",
  "<!--",
  "  function drawSomeText(id) {",
  "  var pjs = Processing.getInstanceById(id);",
  "  var text = document.getElementById('inputtext').value;",
  "  pjs.drawText(text);}",
  "-->",
  "</script>"

 ],

 "modify_body": [

  "<input type='text' id='inputtext'></input>",
  "<button onclick=drawSomeText('ExampleCanvas')></button>"
 
 ],
}

一旦解析，我只使用myData.modify_head.join('\n')或myData.modify_head.join()，这取决于我是否想在每个字符串后换行。

这看起来很整洁，除了我必须在所有地方使用双引号。尽管在其他情况下，我也许可以使用YAML，但它有其他缺陷，并且本机不支持。

您可以在客户端编码，在服务器端解码。这也可以处理\n和\t字符

例:我需要通过json发送多行xml

{
  "xml": "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"
}

然后在服务器端解码

public class XMLInput
{
        public string xml { get; set; }
        public string DecodeBase64()
        {
            var valueBytes = System.Convert.FromBase64String(this.xml);
            return Encoding.UTF8.GetString(valueBytes);
        }
}

public async Task<string> PublishXMLAsync([FromBody] XMLInput xmlInput)
{
     string data = xmlInput.DecodeBase64();
}

一旦解码，您将得到原始的XML

<?xml version="1.0" encoding="utf-8" ?>
  <Structures>
       <inputs>
               # This program adds two numbers

               num1 = 1.5
               num2 = 6.3

               # Add two numbers
               sum = num1 + num2

               # Display the sum
               print('The sum of {0} and {1} is {2}'.format(num1, num2, sum))
       </inputs>
  </Structures>