io.nuls.core.model.ObjectUtils Maven / Gradle / Ivy

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package io.nuls.core.model;

import java.io.*;
import java.util.List;
import java.util.Map;

/**
 * @author tag
 */
public class ObjectUtils {
    public static void isEquals(Object val1, Object val2, String msg) {
        if (val1 == val2 || (val1 != null && val1.equals(val2))) {
            return;
        }
        throw new RuntimeException(msg);
    }

    public static void canNotEmpty(Object val) {
        canNotEmpty(val, "null parameter");
    }

    public static void canNotEmpty(Object val, String msg) {
        boolean b = false;
        do {
            if (null == val) {
                b = true;
                break;
            }
            if (val instanceof String) {
                b = StringUtils.isBlank(val + "");
                break;
            }
            if (val instanceof List) {
                b = ((List) val).isEmpty();
                break;
            }
            if (val instanceof Map) {
                b = ((Map) val).isEmpty();
                break;
            }
            if (val instanceof String[]) {
                b = ((String[]) val).length == 0;
                break;
            }
            if (val instanceof byte[]) {
                b = ((byte[]) val).length == 0;
                break;
            }
        } while (false);
        if (b) {
            throw new RuntimeException(msg);
        }
    }

    public static byte[] objectToBytes(T obj){
        byte[] bytes = null;
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ObjectOutputStream sOut;
        try {
            sOut = new ObjectOutputStream(out);
            sOut.writeObject(obj);
            sOut.flush();
            bytes= out.toByteArray();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bytes;
    }

    public static T bytesToObject(byte[] bytes) {
        T t = null;
        ByteArrayInputStream in = new ByteArrayInputStream(bytes);
        ObjectInputStream sIn;
        try {
            sIn = new ObjectInputStream(in);
            t = (T)sIn.readObject();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return t;
    }

}