JSON class library performance comparison between Jackson and Json-lib [go]

jackson:http://jackson.codehaus.org/

json-lib:http://json-lib.sourceforge.net/

gson:http://code.google.com/p/google-gson/

Test environment:

1. Working computer: Intel Dual Core E8400 6GHz, Memory 4gb,winxp

2, Json-lib with the latest Jdk15,gson version is the latest V1.4,jackson is also the latest v1.5.5,jdk-v1.6.0_20,jmeter-v2.4

3, the test does not open any unrelated process, each completed a test after closing JMeter finishing memory, then the next test, each test run 3 times, averaging

4, JSON to Java bean meaning to convert JSON format to Java class, this class includes map, List, Date, Integer/long/double, string and other types of properties, Java Bean to JSON is the same. In addition, the two turn each other, the data of each conversion is randomly generated

Test Results:

* The higher the value of the throughput, the better, the lower the total time-consuming value, the better

JSON to bean,5 threads concurrently, about 200-byte objects, 10 million conversions:

	Jackson	Json-lib	Gson
Tps	64113.7	8067.4	13952.8
Total time taken (seconds)	155	1238	700

The bean goes json,5 threads concurrently, about 200 bytes of objects, 10 million conversions:

	Jackson	Json-lib	Gson
Tps	54802	15093.2	17308.2
Total time taken (seconds)	181	661	560

JSON to bean,5 threads concurrent, about 2K objects, 10 million conversions:

	Jackson	Json-lib	Gson
Tps	37314	2406.9	3657.50
Total time taken (seconds)	267	4120	2720

Bean to json,5 threads concurrent, about 2K objects, 10 million conversions:

	Jackson	Json-lib	Gson
Tps	30922.2	4274.8	4977.00
Total time taken (seconds)	322	2320	2000

Test Summary:

1 . Obviously, no matter what kind of conversion, Jackson > Gson > Json-lib.

Jackson's ability to deal with the json-lib is about 10 times times higher.

2, Json-lib seems to have stopped updating, the latest version is based on JDK15, and Jackson's community is more active;

3, While testing the performance, and the human flesh way to the three class library conversion correctness was checked , the three are up to 100% correct ;

4. Json-lib is cumbersome when converting a date type, as the following is the result of the conversion:

Json-lib:

{"Brithday": {"date": +, "Day": 2, "hours": 9, "minutes": +, "month": 7, "seconds": +, "time": 1282008266398, " Timezoneoffset ": -480," Year ": 110}}

Jackson:

{"Brithday": 1282008123101}

5, Json-lib dependentCommons series of packages and ezmorph pack of 5, and Jackson in addition to their own only rely on commons-logging
6. Jackson provides a complete node-based tree Model, as well as complete OJM data binding capabilities.

Jackson Use Example:

Jacksonmapper:

Created as a a hungry man singleton mode , Jackson used to convert the core class Objectmapper without having to new an object every time, a sentence on the official web: can reuse, share globally

Java code

2. /**
4. * @author Xuanyin
6. *
8. */
10. Public class Jacksonmapper {
14. /** 
16. *
18. */
20. private Static final Objectmapper mapper = new Objectmapper ();
24. /** 
26. *
28. */
30. Private Jacksonmapper () {
34. }
38. /** 
40. *
42. * @return
44. */
46. public static Objectmapper getinstance () {
50. return mapper;
52. }
56. }

JSON to Bean:

Java code

1. ......
2. String json = "...";
3. Objectmapper mapper = Jacksonmapper.getinstance ();
4. Yourbean bean = Mapper.readvalue (JSON, new Yourbean (). GetClass ());
5. ......

Bean to JSON:

Java code

1. ......
2. Yourbean bean = new Yourbean ();
3. ......
4. Objectmapper mapper = Jacksonmapper.getinstance ();
5. StringWriter SW = new StringWriter ();
6. Jsongenerator Gen = New Jsonfactory (). Createjsongenerator (SW);
7. Mapper.writevalue (gen, Bean);
8. Gen.close ();
9. String json = sw.tostring ();
10. ......

* Yourbean of the above two pieces of code can of course be the basic type of Java

JSON class library performance comparison between Jackson and Json-lib [go]