GsonAPT

It is base in Gson lib and use Annotation Processor.If you can add the @JsonBean annotation to bean,the json parse will be faster;

it can also process the bean without @JsonBean,which will be processed by default Gson.In addition you can use GsonAPT.setGson()to change the default Gson in GsonAPT.

How to use

step 1

dependencies {

...
compile project(':gsonaptannotation')

apt project(':gsonaptcomplier')

}

step 2: add the annotation to bean

@JsonBean public class LittleBean { String littleBeanName;

public String getLittleBeanName() {
    return littleBeanName;
}

public void setLittleBeanName(String littleBeanName) {
    this.littleBeanName = littleBeanName;
}

public LittleBean() {
}

public LittleBean(String littleBeanName) {
    this.littleBeanName = littleBeanName;
}

}

step 3:compile

compile will generate the GsonAPT class

step 4:use GsonAPT to replace new Gson()

    TestBean testBean = new TestBean();
    String str = GsonAPT.toJson(testBean);
    testBean = GsonAPT.fromJson(str,TestBean.class);

    Map<Integer, OtherBean> map = new HashMap<>();
    map.put(9, new OtherBean(""));
    map.put(1, new OtherBean(null));
    String mapStr = GsonAPT.toJson(map);
    map = GsonAPT.fromJson(mapStr,new TypeToken<Map<Integer, OtherBean>>() {
    }.getType());

How fast

how much time to parse the small bean:

times	Gson toJson	GsonAPT toJson	Gson fromJson	GsonAPT fromJson
10	3	1	10	1
10000	738	363	883	756
100000	8361	4420	10616	9346

how much time to parse the big bean:

times	Gson toJson	GsonAPT toJson	Gson fromJson	GsonAPT fromJson
1	673	325	811	700
10	7748	3740	9506	8182

times	Gson toJson Speed / GsonAPT toJson Speed
10000(small)	49%
100000(small)	52%
1(big)	48%
10(big)	48%

times	Gson fromJson Speed / GsonAPT fromJson Speed
10000(small)	86%
100000(small)	88%
1(big)	86%
10(big)	86%

attention

the field should was public , default or have the get/set method in the bean
it no support the non-static inner class like the default Gson

zscgrhg/GsonAPT