Java JSON Tutorials
JSON (JavaScript Object Notation) is a simple, lightweight and easy to read and write data exchange formats. In Java, normally we use Jackson or Gson to parse JSON.
1. Jackson
Tested with Jackson 2.9.8
- Jackson – How to parse JSON
- Jackson – Convert JSON string to Map
- Jackson – Convert JSON array string to List
- Jackson – How to ignore null fields
- Jackson – @JsonView examples
- Jackson – Tree Model examples
- Jackson – Streaming Model examples
- Jackson – How to enable pretty print JSON output
- Jackson – Convert Java Object to / from JSON
- @Deprecated Jackson 1.x – Convert Java Object to / from JSON
2. Gson
Tested with Gson 2.8.5
- Gson – How to arse JSON
- Gson – How to convert Java object to / from JSON
- Gson – Read and write JSON as a stream
- Gson – How to enable pretty print JSON output
3. FastJson
Tested with FastJson 1.2.57
FAQs
- JSON.simple – How to parse JSON
- @Deprecated JSON.simple 1.x – Read and write JSON
- JSONAssert – How to unit test JSON data
- Spring Test – How to test a JSON Array in jsonPath
- JavaScript Array to JSON
Nice one
hi
in “Gson” there is a word that is not correct . misspell
It’s Really Helpfull Tutorial!!!!!!!!!!!
how to convert excel format to jason and parse json data to the given word format using spring
want to parse this json data using java, want to know source code
{“data”:[{“header”:”center:@:ENVELOP_ID:@:center_city:@:dispatch_date”},{“value”:”:@::@::@:”},{“value”:”[[HEADERTITLE]] e 101 achla”},{“value”:”:@::@::@:”},{“value”:”101:@:14:@:City 1:@:05/07/2019″},{“value”:”:@:15:@:City 1:@:05/07/2019″},{“value”:”:@:16:@:City 1:@:05/07/2019″},{“value”:”:@:17:@:City 1:@:05/07/2019″},{“value”:”:@:18:@:City 1:@:05/07/2019″},{“value”:”:@:19:@:City 1:@:05/07/2019″},{“value”:”:@:20:@:City 1:@:05/07/2019″},{“value”:”:@:21:@:City 1:@:05/07/2019″},{“value”:”:@:22:@:City 1:@:05/07/2019″},{“value”:”:@:23:@:City 1:@:05/07/2019″},{“value”:”:@::@::@:”},{“value”:”[[HEADERTITLE]] h 102 aahl”},{“value”:”:@::@::@:”},{“value”:”102:@:16:@:City 2:@:06/07/2019″},{“value”:”:@:17:@:City 2:@:06/07/2019″},{“value”:”:@:18:@:City 2:@:06/07/2019″},{“value”:”:@:19:@:City 2:@:06/07/2019″},{“value”:”:@:20:@:City 2:@:06/07/2019″},{“value”:”:@:21:@:City 2:@:06/07/2019″},{“value”:”:@:22:@:City 2:@:06/07/2019″},{“value”:”:@:23:@:City 2:@:06/07/2019″},{“value”:”:@:24:@:City 2:@:06/07/2019″},{“value”:”:@::@::@:”},{“value”:”[[HEADERTITLE]] c 103 bbgv “},{“value”:”:@::@::@:”},{“value”:”103:@:12:@:City 3:@:07/07/2019″},{“value”:”:@:13:@:City 3:@:07/07/2019″},{“value”:”:@:14:@:City 3:@:07/07/2019″},{“value”:”:@:15:@:City 3:@:07/07/2019″},{“value”:”:@:16:@:City 3:@:07/07/2019″},{“value”:”:@:17:@:City 3:@:07/07/2019″},{“value”:”:@:18:@:City 3:@:07/07/2019″},{“value”:”:@:19:@:City 3:@:07/07/2019″},{“value”:”:@::@::@:”},{“value”:”[[HEADERTITLE]] s 104 eedg “},{“value”:”:@::@::@:”},{“value”:”104:@:99:@:City 4:@:08/07/2019″},{“value”:”:@:100:@:City 4:@:08/07/2019″},{“value”:”:@:101:@:City 4:@:08/07/2019″},{“value”:”:@:102:@:City 4:@:08/07/2019″},{“value”:”:@:103:@:City 4:@:08/07/2019″},{“value”:”:@:104:@:City 4:@:08/07/2019″},{“value”:”:@:105:@:City 4:@:08/07/2019″},{“value”:”:@::@::@:”},{“value”:”[[HEADERTITLE]] p 105 ffgb”},{“value”:”:@::@::@:”},{“value”:”105:@:77:@:City 5:@:09/07/2019″},{“value”:”:@:78:@:City 5:@:09/07/2019″},{“value”:”:@:79:@:City 5:@:09/07/2019″},{“value”:”:@:80:@:City 5:@:09/07/2019″},{“value”:”:@:81:@:City 5:@:09/07/2019″},{“value”:”:@:82:@:City 5:@:09/07/2019″}],”status”:”success”}
Great job! Mkyong, could you help with Java Persistent APIs examples, Please.
Great tutorial. Thanks.
mostly where we use JSON
FastJSON https://github.com/alibaba/fastjson
It’s really very fast
There’s also a tool that can take JSON as input and generate Java classes from it (both source and compiled). It can also add Jackson bindings during generation.
http://javafromjson.dashingrocket.com
http://javafromjson.dashingrocket.com/ can generate the Java Classes from JSON so you don’t have to write them yourself
To develop a webservice using java to fetch the data from json array and store that data on the database…
see bit more examples
http://www.pretechsol.com/search/label/Java%20JSON#.UeYTXhnZhaE
Here is good Example of JSon
http://jhansitech.blogspot.in/2013/05/cobject-json-query.html
This code works fine for me
Where as if I change Media Type to JSON, it throws error -500.
16558 [http-8080-2] ERROR org.apache.wink.server.internal.handlers.FlushResultHandler – The system could not find a javax.ws.rs.ext.MessageBodyWriter or a DataSourceProvider class for the java.util.ArrayList type and application/json mediaType. Ensure that a javax.ws.rs.ext.MessageBodyWriter exists in the JAX-RS application for the type and media type specified.
if the value has a double quotation(“), which function should I use?
thanks 🙂
You are just posting, we followed you, become victims while developing the applications.
We got the following error.If we would have followed,JDK JSON we might not face this problem…
I realized that this is not your mistake, Googles product bug…
Inconvenience regretted..
Laxman, he is only helping you and before posting any anything you should have been sure !
Thanks Mkyong… This site is really very useful for all the queries related to JSON..
ITS RIGHT THIS WEBSITE GOOD FOR JSON
Hi,
My doubt on struts2 jquery grid. I want to get the column names of a grid from struts2 Action class.
Please help me
how to get property names of Action class or DAO class.
based on the property names i generate grid dynamically.
Thank u…..
Really its a very good tutorial …… Thank you so much.
Thank you so much.
This tutorial is very useful with me.
very nice for understanding i never see like this before.
Implementing an interface means overiding its methods. So @overide was used.
we can not override abstract methods we can implement abstract methods.
you are a very good engineer.
Excellent , mkyong @ BEST . Really Appreciable .Tons of Best Wishes.
Thanks
Muskandaza