自定义JSON处理器以优化浮点数处理

import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.util.Locale;

import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;

public class CustomFloatProcessor implements JsonValueProcessor {

    public CustomFloatProcessor() {}

    @Override
    public Object processArrayValue(Object value, JsonConfig config) {
        if (value instanceof float[]) {
            DecimalFormat df = new DecimalFormat("#.###");
            df.setRoundingMode(RoundingMode.HALF_UP);
            float[] floats = (float[]) value;
            String[] result = new String[floats.length];
            for (int i = 0; i                 result[i] = df.format(floats[i]);
            }
            return result;
        }
        return value;
    }

    @Override
    public Object processObjectValue(String key, Object value, JsonConfig config) {
        if (value instanceof Float) {
            DecimalFormat df = new DecimalFormat("#.###");
            df.setRoundingMode(RoundingMode.HALF_UP);
            return df.format(value);
        }
        return value;
    }
}

JsonConfig jsOnConfig= new JsonConfig();
jsonConfig.registerJsonValueProcessor(Float.class, new CustomFloatProcessor());

float sampleFloat = 0.123456789f;
JSONArray jsonArray = JSONArray.fromObject(sampleFloat, jsonConfig);
System.out.println(jsonArray.toString());