Json parser without json library - java

I need to make a json parser without json library. The input will be like {:[{}, {}]}. It should return 1 if string is ok and -1 if string is wrong.

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Storing a JSON payload in ByteBuffer is unable to print braces or colon

I have a JSON payload encoded to Base64 that needs to be stored in a ByteBuffer to be returned.
Upon trying to convert it from Base64 to JSON on base64decode.org I am able to get the proper json but on trying to do the same in code, it just prints out the data but not the {, } or the :
I am using DatatypeConverter.parseBase64Binary to achieve it.
What should I use in the code to return the properly formatted JSON payload?

Read multipile JSON objects from single file with Jackson

I'm using Jackson 2.6.5.
I'm trying to read the following JSON:
{
"metadata1":"value",
"metadata2":"value"
}
{
"field1":"value",
"field2":"value",
....
}
With the following code:
JSONObject jsonObj = new JSONObject(jsonString);
But jsonObj contains only the "first" part of my JSON (the metadata), How can I read the "second" part of my JSON? (the part with the fields)?
EDIT
I know that my JSON doesn't contain "," so how can I parse it without "," between the jsons?
Seems like the JSON you added is missing a , sign between the two objects.
If you get such an non-json as input string, you might want to consider to:
First manipulate the input string by adding it the missing , . E.g. find the location of }{ and replace it with },{
And only then to insert it to the jackson
Your json is invalid, so you can't parse invalid json scheme by json parsing tools out of the box,
Instead you could read file by yourself into 2 strings - one valid json per string and then parse it with any json parser.

Java parsing from escaped json string

There are many threads related to this, but I can't solve my issue.
I get this string from parsing an iterable using GSON.
Iterable<ParametrosProveedores> proveedoresList;
proveedoresList = proveedoresRepository.findAll(); //From spring repository
String jsonString = gson.toJson(proveedoresList);
jsonString value is:
[{\"id\":1,\"proveedor\":\"CALIXTA\",\"unaVia\":true,\"dosVias\":true,\"plazasSi\":\"todas\",\"plazasNo\":\"\",\"turnoUnaVia\":false,\"turnoDosVias\":false},{\"id\":2,\"proveedor\":\"MOVILE\",\"unaVia\":true,\"dosVias\":true,\"plazasSi\":\"51,52\",\"plazasNo\":\"\",\"turnoUnaVia\":false,\"turnoDosVias\":false},{\"id\":3,\"proveedor\":\"TWILIO\",\"unaVia\":true,\"dosVias\":true,\"plazasSi\":\"todas\",\"plazasNo\":\"51\",\"turnoUnaVia\":false,\"turnoDosVias\":false},{\"id\":4,\"proveedor\":\"OTRO\",\"unaVia\":true,\"dosVias\":true,\"plazasSi\":\"todas\",\"plazasNo\":\"\",\"turnoUnaVia\":false,\"turnoDosVias\":false}]
Which is a json array. Is there really no way to parse from that string without removing escapes manually?
All I want to do is:
JSONArray jsonArray = parseFrom(jsonString);
Is it possible?
Since you are using a generic in the form of an Iterable<T>, you may need to use:
String jsonString = gson.toJson(proveedoresList, typeOfSrc);
Where typeOfSrc is the type of your proveedoresList. that way gson knows how to serialize the object properly.

ignore json within json

I am parsing a JSON document using Java Jackson library. I have a situation in which the JSON document can contain a payload field in JSON/yaml/csv format. The parser is throwing exceptions; so I don't want the payload to be parsed. Is there a way I can delimit the payload so that it is considered as a string than structure?
Following is the json document: { "recordId":"48", "payLoad":{"firstName":"John","lastName":"Doe"} }
How can I delimit the payload content to be view as a String?

Parsing a json string in java

I am trying to parse a json string of the format :
{"magha": {"2014-04-04 14:27:08.669217": "125"}}
I am not able to create a parser for the same. Looking forward for any help.
Download the json-lib-jar
Use JSONObject
Do like this
JSONObject jobject=new JSONObject(yourjsonstring);
String magha=jobject.getString("magha");

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