代码如下：
public class CommonUtils {
//高位在前，低位在后
public static byte[] int2bytes(int num){
byte[] result = new byte[4];
result[0] = (byte)((num >>> 24) & 0xff);//说
public class JsonExtracter {
public static void main(String[] args) {
String s = "{"name":"a","family":["张三","李四"]}";
JSONObject jsonObject = JSON.parseOb
