Examples with UtilException cn.hutool.core.exceptions.UtilException used on opensource projects

Example 1 with UtilException

use of cn.hutool.core.exceptions.UtilException in project hutool by looly.

the class ClassUtil method getClassPaths.

/**
 * 获得ClassPath
 *
 * @param packageName 包名称
 * @return ClassPath路径字符串集合
 */
public static Set<String> getClassPaths(String packageName) {
    String packagePath = packageName.replace(StrUtil.DOT, StrUtil.SLASH);
    Enumeration<URL> resources;
    try {
        resources = getClassLoader().getResources(packagePath);
    } catch (IOException e) {
        throw new UtilException(e, "Loading classPath [{}] error!", packagePath);
    }
    Set<String> paths = new HashSet<String>();
    while (resources.hasMoreElements()) {
        paths.add(resources.nextElement().getPath());
    }
    return paths;
}

Example 2 with UtilException

use of cn.hutool.core.exceptions.UtilException in project hutool by looly.

the class NetUtil method getMacAddress.

/**
 * 获得指定地址信息中的MAC地址
 *
 * @param inetAddress {@link InetAddress}
 * @param separator 分隔符，推荐使用“-”或者“:”
 * @return MAC地址，用-分隔
 */
public static String getMacAddress(InetAddress inetAddress, String separator) {
    if (null == inetAddress) {
        return null;
    }
    byte[] mac;
    try {
        mac = NetworkInterface.getByInetAddress(inetAddress).getHardwareAddress();
    } catch (SocketException e) {
        throw new UtilException(e);
    }
    if (null != mac) {
        final StringBuilder sb = new StringBuilder();
        String s;
        for (int i = 0; i < mac.length; i++) {
            if (i != 0) {
                sb.append(separator);
            }
            // 字节转换为整数
            s = Integer.toHexString(mac[i] & 0xFF);
            sb.append(s.length() == 1 ? 0 + s : s);
        }
        return sb.toString();
    }
    return null;
}

Example 3 with UtilException

use of cn.hutool.core.exceptions.UtilException in project hutool by looly.

the class NumberUtil method generateBySet.

/**
 * 生成不重复随机数 根据给定的最小数字和最大数字，以及随机数的个数，产生指定的不重复的数组
 *
 * @param begin 最小数字（包含该数）
 * @param end 最大数字（不包含该数）
 * @param size 指定产生随机数的个数
 * @return 随机int数组
 */
public static Integer[] generateBySet(int begin, int end, int size) {
    if (begin > end) {
        int temp = begin;
        begin = end;
        end = temp;
    }
    // 加入逻辑判断，确保begin<end并且size不能大于该表示范围
    if ((end - begin) < size) {
        throw new UtilException("Size is larger than range between begin and end!");
    }
    Random ran = new Random();
    Set<Integer> set = new HashSet<Integer>();
    while (set.size() < size) {
        set.add(begin + ran.nextInt(end - begin));
    }
    Integer[] ranArr = set.toArray(new Integer[size]);
    return ranArr;
}

Example 4 with UtilException

use of cn.hutool.core.exceptions.UtilException in project hutool by looly.

the class ObjectUtil method serialize.

/**
 * 序列化<br>
 * 对象必须实现Serializable接口
 *
 * @param <T> 对象类型
 * @param obj 要被序列化的对象
 * @return 序列化后的字节码
 */
public static <T> byte[] serialize(T obj) {
    if (null == obj || false == (obj instanceof Serializable)) {
        return null;
    }
    FastByteArrayOutputStream byteOut = new FastByteArrayOutputStream();
    ObjectOutputStream oos = null;
    try {
        oos = new ObjectOutputStream(byteOut);
        oos.writeObject(obj);
        oos.flush();
    } catch (Exception e) {
        throw new UtilException(e);
    } finally {
        IoUtil.close(oos);
    }
    return byteOut.toByteArray();
}

Example 5 with UtilException

use of cn.hutool.core.exceptions.UtilException in project hutool by looly.

the class ObjectUtil method cloneByStream.

/**
 * 序列化后拷贝流的方式克隆<br>
 * 对象必须实现Serializable接口
 *
 * @param <T> 对象类型
 * @param obj 被克隆对象
 * @return 克隆后的对象
 * @throws UtilException IO异常和ClassNotFoundException封装
 */
@SuppressWarnings("unchecked")
public static <T> T cloneByStream(T obj) {
    if (null == obj || false == (obj instanceof Serializable)) {
        return null;
    }
    final FastByteArrayOutputStream byteOut = new FastByteArrayOutputStream();
    ObjectOutputStream out = null;
    try {
        out = new ObjectOutputStream(byteOut);
        out.writeObject(obj);
        out.flush();
        final ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(byteOut.toByteArray()));
        return (T) in.readObject();
    } catch (Exception e) {
        throw new UtilException(e);
    } finally {
        IoUtil.close(out);
    }
}