Bad control character in string literal in json

When working with JSON data, it is important to ensure that the string literals are properly formatted and do not contain any bad control characters. A bad control character refers to any character that is not allowed in a JSON string literal, such as unescaped quotation marks or backslashes. These characters can cause parsing errors and can make the JSON data invalid.

To resolve the issue of a bad control character in a JSON string literal, you need to properly escape or encode the problematic characters. Here are some examples to illustrate the solutions:

1. Escape Quotation Marks: When a JSON string literal contains double quotation marks, they should be escaped with a backslash (\”). For example:

           
   {
     "message": "This is a \"bad\" control character."
   }
           
         

2. Escape Backslashes: Similarly, backslashes should also be escaped with an additional backslash (\\) in a JSON string literal. For example:

           
   {
     "path": "C:\\Program Files\\"
   }
           
         

3. Use Unicode Escape Sequences: If you encounter characters that cannot be represented directly in a JSON string literal, you can use Unicode escape sequences to encode them. For example, the character μ (mu) can be represented as \u03BC in JSON. Here’s an example:

           
   {
     "symbol": "\u03BC"
   }
           
         

By escaping or encoding the problematic characters in a JSON string literal properly, you can avoid the “bad control character” error and ensure that your JSON data is valid.