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kubalie

Need a C++ JSON something

6 posts in this topic

Hi,

 

I am in need of a JSON library (I am not sure if thats what it is called) that I can easily bring into my visual studio 2012 project. I tried jansson but it had a lot of errors from some sort of inline issue to not being able to find the functions (linking errors). Not sure if I might of not configured myself correctly but I cant find any documentation for how to do it on windows with vs.

Anyways any help?

 

Thanks.

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I've used jsoncpp in the past after looking at the available options.

 

The amalgamated version which allows you to include it as a single header file was slightly broken and needed a few minor changes to get it to compile. Apart from that though, it was straightforward and easy to use.

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Yea so like I mentioned 

 

You can also check out Jansson

 

+1

 

Jansson is great. Very easy to use and reasonably quick.

So like I mentioned I did try Jansson because I read that its a good json util but I was unable to get it to work in my project. I built a lib and put it in my project and that failed I also took the actual source files and imported them into my project and that also failed. I am not too clear on what I need to do to get Jansson working with visual studio on windows. thanks

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OK so after some work I finally got jansson to work with visual studio. Not sure why but for some reason visual studio did not like this #define JSON_INLINE inline inside  jansson.h. Not sure why. Anyways so now I am trying to see if this will parse any json data and I have a test of json data but it fails saying "error: root is not an array". I have doubled check to make sure that it in face is a legit json (jsonlint).

 

char *text = 0;
	
	json_t *root = 0;
	json_error_t error;

	text = "{\"glossary\": {\"title\": \"example glossary\",\"GlossDiv\": {\"title\": \"S\",\"GlossList\": {\"GlossEntry\": {\"ID\": \"SGML\",\"SortAs\": \"SGML\",\"GlossTerm\": \"Standard Generalized Markup Language\",\"Acronym\": \"SGML\",\"Abbrev\": \"ISO 8879:1986\",\"GlossDef\": {\"para\": \"A meta-markup language, used to create markup languages such as DocBook.\",\"GlossSeeAlso\": [\"GML\", \"XML\"] },\"GlossSee\": \"markup\"}}}}}";
		
	if(!text)
		return 1;

	root = json_loads(text, 0, &error);

	if(!root)
	{
		fprintf(stderr, "error: on line %d: %s\n", error.line, error.text);
	}

	if(!json_is_array(root))
	{
		fprintf(stderr, "error: root is not an array\n");
		json_decref(root);
	}

 

Thanks again for all the replies!!

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