Java GSON将布尔值序列化为0或1
全部, 我正在努力做到以下几点:Java GSON将布尔值序列化为0或1,java,json,parsing,serialization,gson,Java,Json,Parsing,Serialization,Gson,全部, 我正在努力做到以下几点: public class SomClass { public boolean x; public int y; public String z; } SomClass s = new SomClass(); s.x = true; s.y = 10; s.z = "ZZZ"; Gson gson = new Gson(); String retVal = gson.toJson(s); return retVal; 因此
public class SomClass
{
public boolean x;
public int y;
public String z;
}
SomClass s = new SomClass();
s.x = true;
s.y = 10;
s.z = "ZZZ";
Gson gson = new Gson();
String retVal = gson.toJson(s);
return retVal;
因此,这个小片段将产生:
{"x":true,"y":10,"z":"ZZZ"}
但我需要的是:
{"x":0, "y":10,"z":"ZZZ"}
有人能给我一些选择吗?我不希望将布尔值重写为int,因为这会导致现有代码出现一些问题(不明显、难以阅读、难以执行等)或者这样:要使其成为“正确”的方式,您可以使用类似的方法
import java.lang.reflect.Type;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
public class BooleanSerializer implements JsonSerializer<Boolean>, JsonDeserializer<Boolean> {
@Override
public JsonElement serialize(Boolean arg0, Type arg1, JsonSerializationContext arg2) {
return new JsonPrimitive(Boolean.TRUE.equals(arg0));
}
@Override
public Boolean deserialize(JsonElement arg0, Type arg1, JsonDeserializationContext arg2) throws JsonParseException {
return arg0.getAsInt() == 1;
}
}
希望这对某人有所帮助:-)正如IntelliJ为我指出的,您可以将
反序列化
函数简化为简单的返回arg0.getAsInt()==1
它对我来说只需稍加修改即可:b.registerTypeAdapter(boolean.class,new BooleanSerializer())代码>谢谢。这对我来说很有用…b.registerTypeAdapter(boolean.class,新的BooleanSerializer());与@gavin相同根据文档,您还应该注册boolean.class b.registerTypeAdapter(boolean.class,new BooleanSerializer());b、 registerTypeAdapter(boolean.class,新的BooleanSerializer());返回新的JsonPrimitive(arg0?1:0);如果arg0为null,则将崩溃。执行布尔值.TRUE.equals(arg0)。。。相反
public class Main {
public class Base {
@Expose
@SerializedName("class")
protected String clazz = getClass().getSimpleName();
protected String control = "ctrl";
}
public class Child extends Base {
protected String text = "This is text";
protected Boolean boolTest = false;
}
/**
* @param args
*/
public static void main(String[] args) {
Main m = new Main();
GsonBuilder b = new GsonBuilder();
BooleanSerializer serializer = new BooleanSerializer();
b.registerTypeAdapter(Boolean.class, serializer);
b.registerTypeAdapter(boolean.class, serializer);
Gson gson = b.create();
Child c = m.new Child();
System.out.println(gson.toJson(c));
String testStr = "{\"text\":\"This is text\",\"boolTest\":1,\"class\":\"Child\",\"control\":\"ctrl\"}";
Child cc = gson.fromJson(testStr, Main.Child.class);
System.out.println(gson.toJson(cc));
}
}