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JsonParser decoding the unicode

I am converting a JSON string into a JsonObject, by using JsonParser and JsonElement.
But my JSON string contains few Unicode escape sequence, and after parsing into JsonElement, Unicode escape sequence automatically converting into the actual element.
But I don't want to convert the Unicode escape sequence to the actual element after parsing.
JsonParser parser = new JsonParser();
JsonElement jsonElement = parser.parse(jsonString);
JsonObject jsonObject = jsonElement.getAsJsonObject();
jsonString is as below :
{
"config": {
"title": "Check the String \u0026 verify"
}
}
After parsing into JsonElement result is coming as below:
{"config":{"title":"Check the String & verify"}}
But I don't want to decode \u0026 into & after parsing.
Please suggest to me how I will resolve.
Note: I am using google gson to parse and create JsonElement, JsonObject

If you parse JSON with escape characters and you don't want them to be converted to the actual symbol, just escape the backslash.
"Check the String \u0026 verify" would then be "Check the String \\u0026 verify"

I know that it's a bad solution, but you can replace the \u0026 with \\u0026 before parsing it.
JsonElement jsonElement = JsonParser.parseString(jsonString.replaceAll("\\\\u([0-9a-fA-F]{4})", "\\\\\\\\u$1"));

Text to Json in Java (list in text)

I have the following text which is returned by an API that I call:
{"identified_faces_names": "[\"omar\", \"elhoussinep\"]"}
when I pass this text to JSONParse to parse it, it give me the following exception:
Exception in thread "main" Unexpected character (o) at position 0.
Code used to parse the text to json:
String s = new String("{\"identified_faces_names\": \" [\"omar\",\"elhoussinep\"]\"}");
JSONParser parser = new JSONParser();
Object obj = parser.parse(s);

Did you definitely mean to enclose ["omar", "elhoussinep"] in quotes? Is that definitely intended to be a String value containing string quotes? Or is it intended to be an array of strings?
If identified_faces_names is intended to be an array of strings then the valid JSON is:
{
"identified_faces_names": [
"omar",
"elhoussinep"
]
}
This is parseable, without error, like so:
String s = new String("{\"identified_faces_names\": [\"omar\",\"elhoussinep\"]}");
JSONParser parser = new JSONParser();
Object obj = parser.parse(s);
If identified_faces_names is intended to be a String containing quotes you must escape the quotes inside the string. The valid JSON is:
{
"identified_faces_names": "[\\\"omar\\\",\\\"elhoussinep\\\"]"
}
This is parseable, without error, like so:
String s = new String("{\"identified_faces_names\": \" [\\\"omar\\\",\\\"elhoussinep\\\"]\"}");
JSONParser parser = new JSONParser();
Object obj = parser.parse(s);
So, in summary, I'd suggest revisiting the JSON to determine whether it is an array of strings or a string which contains quotes, if the latter then you have to escape those quotes.
FWIW, you can use JSONLint to check whether the JSON is valid. Using this you can see that your original JSON ({"identified_faces_names": "["omar","elhoussinep"]"}) was not valid and that the first invalid character is the "o" in "omar" and that's deemed invalid because it follows "[" which is deemed to be a complete String.

Use this String {"identified_faces_names": [\"omar\", \"elhoussinep\"]}. It is correct and will parse.

How to convert string to json in java where string contains json objects and arrays both

Hi am trying to convert string json where string contains json objects and arrays both there is some thing braces or quotes missing I am not getting whats wrong happening
String companyid="14";
String userid="1002";
String projectid="378";
String scenarioid="1";
String xTable = "[{\"Label\":\"A\",\"Dimension\":\"0\"},{\"Label\":\"B\",\"Dimension\":\"10\"}]";
String yTable = "[{\"Label\":\"1\",\"Dimension\":\"0\"},{\"Label\":\"2\",\"Dimension\":\"10\"}]";
String zTable = "[{\"Label\":\"Floor1\",\"Dimension\":\"0\"},{\"Label\":\"Floor2\",\"Dimension\":\"10\"}]";
String grid="{\"grids\":{\"xaxis\":\""+xTable+"},{\"yaxis\":\""+yTable+"},{\"zaxis\":\""+zTable+"}";
String inJson="{\"grid\":\"" +grid + "\"}" ;
JSONObject user = new JSONObject(inJson);
System.out.println(user.getString("grid"));
Error:
Exception in thread "main" org.json.JSONException: Expected a ',' or '}' at 80 [character 81 line 1]
at org.json.JSONTokener.syntaxError(JSONTokener.java:451)
at org.json.JSONObject.<init>(JSONObject.java:231)
at org.json.JSONObject.<init>(JSONObject.java:320)
at JsonExcercise.main(JsonExcercise.java:20)

its an escape sequence Problem below is the
String inJson="{\"grid\":\'" +grid + "\'}" ;

the variable grid and inJson are the wrong json format, redundant front quotation mark in the variable， and you can validate by the online web tool,the following code is correct
String companyid="14";
String userid="1002";
String projectid="378";
String scenarioid="1";
String xTable = "[{\"Label\":\"A\",\"Dimension\":\"0\"},{\"Label\":\"B\",\"Dimension\":\"10\"}]";
String yTable = "[{\"Label\":\"1\",\"Dimension\":\"0\"},{\"Label\":\"2\",\"Dimension\":\"10\"}]";
String zTable = "[{\"Label\":\"Floor1\",\"Dimension\":\"0\"},{\"Label\":\"Floor2\",\"Dimension\":\"10\"}]";
String grid="{\"grids\":[{\"xaxis\":"+xTable+"},{\"yaxis\":"+yTable+"},{\"zaxis\":"+zTable+"}]}";
String inJson="{\"companyid\":\"" +companyid + "\",\"userid\":\"" +userid + "\",\"projectid\":\"" +projectid + "\",\"scenarioid\":" +scenarioid + ",\"grid\":" +grid + "}" ;
JSONObject user = new JSONObject(inJson);
System.out.println(user.getString("companyid"));
and you could learn the json array and the json object

The error you got sais: org.json.JSONException: Expected a ',' or '}'
1st step is to check that the number of '{' and '}' match.
if you look at your code:
String grid="{\"grids\":{\"xaxis\":\""+xTable+"},{\"yaxis\":\""+yTable+"},{\"zaxis\":\""+zTable+"}";
is not balanced, it is missing a '}'

Get string from JSON like PHP in Java

I was wondering if there is a way to get a string from JSON in Java like there is in PHP:
<?php
$json = #file_get_contents('example');
$decoded_json = json_decode($json);
echo $decoded_json->{"something"} ;
?>
I have currently tried:
String input = "[{"minecraft.net":"green"},{"session.minecraft.net":"green"},{"account.mojang.com":"green"},{"auth.mojang.com":"green"},{"skins.minecraft.net":"green"},{"authserver.mojang.com":"green"},{"sessionserver.mojang.com":"green"},{"api.mojang.com":"green"},{"textures.minecraft.net":"green"}]";
String wanted = "minecraft.net";
JSONObject json = new JSONObject(input);
String out = json.getString(wanted);
System.out.println(out);
However, it gives me this error:
org.json.JSONException: A JSONObject text must begin with '{' at 1 [character 2 line 1]
Thanks!

It's because your String is not a valid JSON object but a valid JSON array which contains objects, try to use JSONArray instead then you can query around this array for your desired object

You forgot to add \" when a double quote is inside another double quote

Json and Java. From String to JSONObject: issues

I'm using the library org.json.
I have a string like this (quotes can't appear in field_n)
{field1=value1, field2=value2} (say it `val`)
This string is obtained from an Hashtable<String, Object>.
I create a JSONObject from that string, obtaining:
{"field1":"value1", "field2":"value2"}
The issue arises when in the value value_n quotes (or newlines and carriage return) appear.
I've tried to escape the string in this way:
value = value.replace("\\", "\\\\");
value = value.replace("\"", "\\\"");
value = value.replace("\r", "\\r");
value = value.replace("\n", "\\n");
but I always obtain the org.json.JSONException: Expected a ',' or '}' at ... [character ... line 1] when I try to create the JSONObject with:
JSONObject json = new JSONObject(val);

In order to create JSON from map, use:
new JSONObject(myMap);
Another related issue:
quotedStr = JSONObject.quote(val.trim());
will qoute all needed values as it says:
Produce a string in double quotes with backslash sequences in all the right places