Gson

Gson is Google's open-source library for serializing and deserializing Java objects to/from JSON.

Jackson

Jackson is a Java library for handling tasks like reading and writing (parsing / generating) and data binding to/from Java objects



Better project requirement

Example

"Also i want to know if google gson is better than jackson for json parsing"

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Comparison - XML with JiBX or JSON with Jackson?

"After searched in google found that jackson has better performance than gson i plan to replace gson with jackson in my project but i got a diffrent result when run test code"

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Json parse performance between jackson and gson

"Jackson type safety is way better than gson"

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Gson, how to deserialize array or empty string

"We plan to use gson extensively in the application as it seems safer and better than jackson"

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Spring MVC mapping view for Google-GSON?

"Performance of jackson is better than gson"

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Android JSON parsing with GSON crash: LinkedTreeMap cannot be cast to Object

"I found jackson better than gson performance project activity better docs ..."

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Gson on Appengine

"Try and change the gson package to one of the better ones out there jackson for example it might solve your problem"

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Node.js request upload + Jersey server multipart resource => Gson stackoverflow

"Also it seems jackson lib has better performance than other packages such as gson which i haven t tried personally"

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Serialize large Java Object to Json Strings

"Gson is really simple to use and if performance isn t an issue it s quite nice;jackson is much much faster though and is not really that much more effort to use"

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Performance and Usability comparison of Android JSON libraries

"In short if your json response is quite small go with gson otherwise jackson is better"

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Best way to serialize json android

"If using jackson isn t a requirement then you might want to consider using gson instead;you can tell gson how to deserialize your json by just passing it a json string and the class that you want to deserialize"

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Spring + Jackson + Deserializing List of Generic Objects

Faster slower streaming

Example

"Jackson is more suitable if you have a complex deep json tree because gson creates a lot of temporary objects which leads to stop the world gcs"

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Rest Client with AndroidAnnotations - "no suitable HttpMessageConverter..."

"I ve seen questions like this come up before and the general consensus is that jackson is much faster than gson"

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Android: gson performance

"Very small object google gson performs faster than jackson and simple json"

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Org.json.JSONObject vs Gson library JsonObject

"Under some conditions gson has proven to be a lot faster than jackson there also exists jsonp and json.simple"

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Converting 4Mb of JSON to java Object in Jackson taking 1500ms

"Gson 1.6 now includes a low-level streaming api and a new parser which is actually faster than jackson"

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Jackson Vs. Gson

"Further more gson really seems to be faster than jackson json"

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JSON Jackson + HTTPClient with german umlauts

"Jackson is faster but the api is 37x more complex than the gson api"

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Java Built-in data parser for JSON or XML or else

"Personally i prefer jackson as according to test benchmarks it s faster than gson"

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Is there an equivalent to SimpleXML for parse JSON on Android?

"In my case i found jackson little faster than gson i used default serialization because so far i don t have a need to customize serialization"

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* (no title is found for this review)

"Gson is faster with smaller documents and jackson is faster with large documents"

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Is there an equivalent to new Gson().toJson(Object) in FasterXML/Jackson Java library?

"Take a look at the jackson json parser it s faster than the one in android and faster than gson and supports streaming"

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Parsing huge JSON object in Android?

"Deserialization performance is similar with gson over 9x slower than jackson and fastjson about 0.5 faster than jackson"

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Speed up JSON objects

"According to the performance results at for serialization with databind with strings gson.tojson myobject gson is over 10x slower than jackson"

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Speed up JSON objects

"Code looks correct and even at its worst jackson should be no slower than gson"

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Jackson JSON Parser performance

"I looked at gson metrics and it seems slower than jackson"

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Speeding up Jackson: 45 MB of JSON takes 10 minutes to generate

"Gson is simpler jackson is faster"

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Java OBJECT to JSONObject

"Jackson is a little faster so its up to you what you want"

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Smallest (less internal code), up-to-spec JSON parser in Java

Good server side

Example

"Try this lib that s a good one with the jackson we use only in the server side because jackson is more slow in the android than gson at least in our test"

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Out of memory error while parsing a large JSON using Jackson library on Android

"Try the gson lib that s a good one with the jackson we use only in the server side because jackson is more slow in the android than gson at least in we test"

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Out of memory error while parsing a large JSON using Jackson library on Android

Others

Example

Gson is not particularly fast but the jackson library can almost compete with most binary serializers jackson is 2-4x faster than gson in most situations and 10-20x faster on utf-8 because it has special code for utf-8

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Android and AppEngine web service: Json... RPC, REST... protocol buffers?

Since i am more familiar with jackson here are some aspects where i think jackson has more complete support than gson apologies if i miss a gson feature

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Jackson Vs. Gson

This is an issue reported to gson team unfortunately seems they insist that javascript has no integer type as if they do not realize that gson is for java not javascript;so they refused to fix it until today 2018 now despite other lib like jackson does not have such issue at all despite how easy to fix it

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How to prevent Gson from expressing integers as floats

It seems gson is more faster than jackson the average time of gson is about 2ms while jackson is about 16ms does i make mistake when using jackson

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Json parse performance between jackson and gson

Note also that gson comes with less features out of the box than genson or jackson

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Generate JSON sample from POJO

Going to go ahead and say that gson is a lot more user friendly albeit less powerful than jackson

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Generate Java objects from JSON

Keep in mind though that jackson is a larger library than gson so depending on your case you might prefer gson to avoid 65k methods limitation

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I can not deal with the Json

This is frustrating jackson does a much better job of serializing gson will choke for various reasons on classes that jackson serializes without a complaint however gson is better at deserializing

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Getting 'cannot construct instance' while trying to deserialize in Jackson

Gson doesn t care about jackson annotations;if you want these annotations to be taken into account use jackson to deserialize your json

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How to deserialize a JSON with integer as key?

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