Parsing automatically gerenerated JSON file - java

I am totally new on working with JSON.
Currently, I am processing JSON files, which are automatically generated from a device. The file contains huge number of objects and looks like the following:
{"age":13,"name":"Alan","Acc":[12,25,60]}
{"age":33,"name":"Dave","Acc":NULL}
{"age":18,"name":"Sara","Acc":[2,3,4]}
...
I went through some tutorials and understood JSON notations/syntax shall not be like the files that I'm working with.
I am trying to parse these files using Java JSON.simple, but I get error after the following line of code:
Object obj = parser.parse(new FileReader("/home/alan/test.json"));
The error is:
Unexpected token LEFT BRACE({)
I would be appreciated if someone could help me with this.
Cheers,
Alan

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IBM Integration bus, parsing json

Hello I have a problem to parse any JSON in IIB Toolkit. The exception thrown by java compute node is: java.lang.NoClassDefFoundError: org.json.JSONObject
I am parsing incoming JSON messages in UTF-8. I already tried to get them in JSON, but accepting them as BLOB and converting to JSON UTF-8 works for me.
String messageText = new String(outMessage.getRootElement().getLastChild().getLastChild().getValueAsString());
messageText = new String(DatatypeConverter.parseHexBinary(messageText),"UTF-8");
JSONObject json = new JSONObject("{}");
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So what you are trying to do is a bit of a no-no. You're trying to use the Java class JSONObject rather than using the builtin IIB Java Parser.
Have a look at MbElement in particular the methods createElementAsLastChild(java.lang.String parserName) and createElementAsLastChildFromBitstream.
As per my earlier answer never forget your are trying to build a tree of elements.
One other trick I sometimes use is to build a sample output message and send it to an Input node connected to a Trace node. I then use the Trace node output to write code to build my actual output tree, you can even put a Trace node after your JavaCompute node to see what the Element tree you've currently built looks like and correct your mistakes. I mostly use this method for SOAP messages which can be quite complex.
If you really want to use external Java classes then search for Using JAXB with a JavaCompute node and follow the links from that article.

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I'm trying to convert complex json response to simple POJO objects. What I mean, I can convert this json response to pojo with www.jsonschema2pojo.org , but it generates me 47 files. I don't want this solution.
I want simple and light POJO objects. So, what I need, a few pojo files (May be max 5-6 files) with entire json attributes.
Example
My sample json response ( Wordpress ):
https://pastebin.ca/3855759
And the generator creates these files:
see image
I read these and similar posts but I could't fix my issue;
stackoverflow.com/questions/41692991/convert-nested-json-to-simple-json
stackoverflow.com/questions/31117784/convert-complex-json-to-one-level-pojo-using-jackson
So, do you have any solution to accomplish this?

try GSOnFormat plugin from in android studio plugins.
you can install it from file >Settings>plugins>browse repository>GSONFORMAT
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I am looking for a utility which converts one json format to another by respecting at the conversion definitions from a preferably xml file. Is there any library doing something like this in java ?
For example source json is:
{"name":"aa","surname":"bb","accounts":[{"accountid":10,"balance":100}]}
target json is :
{"owner":"aa-bb","accounts":[{"accountid":10,"balance":100}]}
sample config xml :
t.owner = s.name.concat("-").concat(surname)
t.accounts = t.accounts
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Is this what u need?
Open input file.
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Convert in-memory data structure to new structure.
Open output file
Unparse in-memory data structure to file using JSON library.

How to convert List<Object> to JSON on playframework Java

First of all, I am using playframework 2 with Java.
I have a Bootstrap-lookahead input field in a view and I want to use a json array as source for it, as described here.
I can generate json at server-side with:
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or on client with:
#{Json.toJson(users)}
However it generates strings with " and when I try to create the bootstrap-lookahead field with this data, it gives me
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You can prevent escaping by using #Html(Json.toJson(users)) in template.
Docs, last paragraph

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I am using XStream for this.
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Based on the provided comments, I can better understand the problem you are facing. I believe the answer you are looking for is implicit collections. Check out the XStream tutorial on aliasing: http://x-stream.github.io/alias-tutorial.html .

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