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

Example 26 with UtilException

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

the class NumberUtil method generateRandomNumber.

// ------------------------------------------------------------------------------------------- generateXXX
/**
 * 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 int[] generateRandomNumber(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!");
    }
    // 种子你可以随意生成，但不能重复
    int[] seed = new int[end - begin];
    for (int i = begin; i < end; i++) {
        seed[i - begin] = i;
    }
    int[] ranArr = new int[size];
    Random ran = new Random();
    // 数量你可以自己定义。
    for (int i = 0; i < size; i++) {
        // 得到一个位置
        int j = ran.nextInt(seed.length - i);
        // 得到那个位置的数值
        ranArr[i] = seed[j];
        // 将最后一个未用的数字放到这里
        seed[j] = seed[seed.length - 1 - i];
    }
    return ranArr;
}

Example 27 with UtilException

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

the class URLUtil method complateUrl.

/**
 * 补全相对路径
 *
 * @param baseUrl 基准URL
 * @param relativePath 相对URL
 * @return 相对路径
 * @exception UtilException MalformedURLException
 */
public static String complateUrl(String baseUrl, String relativePath) {
    baseUrl = formatUrl(baseUrl);
    if (StrUtil.isBlank(baseUrl)) {
        return null;
    }
    try {
        final URL absoluteUrl = new URL(baseUrl);
        final URL parseUrl = new URL(absoluteUrl, relativePath);
        return parseUrl.toString();
    } catch (MalformedURLException e) {
        throw new UtilException(e);
    }
}

Example 28 with UtilException

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

the class XmlUtil method transform.

/**
 * 将XML文档写出
 *
 * @param source 源
 * @param result 目标
 * @param charset 编码
 * @param isPretty 是否格式化输出
 * @since 4.0.9
 */
public static void transform(Source source, Result result, String charset, boolean isPretty) {
    final TransformerFactory factory = TransformerFactory.newInstance();
    try {
        final Transformer xformer = factory.newTransformer();
        xformer.setOutputProperty(OutputKeys.INDENT, isPretty ? "yes" : "no");
        if (StrUtil.isNotBlank(charset)) {
            xformer.setOutputProperty(OutputKeys.ENCODING, charset);
        }
        xformer.transform(source, result);
    } catch (Exception e) {
        throw new UtilException(e, "Trans xml document to string error!");
    }
}

Example 29 with UtilException

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

the class ZipUtil method unzip.

/**
 * 解压
 *
 * @param zipFile zip文件
 * @param outFile 解压到的目录
 * @param charset 编码
 * @return 解压的目录
 * @throws UtilException IO异常
 * @since 3.2.2
 */
@SuppressWarnings("unchecked")
public static File unzip(File zipFile, File outFile, Charset charset) throws UtilException {
    charset = (null == charset) ? DEFAULT_CHARSET : charset;
    ZipFile zipFileObj = null;
    try {
        zipFileObj = new ZipFile(zipFile, charset);
        final Enumeration<ZipEntry> em = (Enumeration<ZipEntry>) zipFileObj.entries();
        ZipEntry zipEntry = null;
        File outItemFile = null;
        while (em.hasMoreElements()) {
            zipEntry = em.nextElement();
            outItemFile = new File(outFile, zipEntry.getName());
            if (zipEntry.isDirectory()) {
                outItemFile.mkdirs();
            } else {
                FileUtil.touch(outItemFile);
                copy(zipFileObj, zipEntry, outItemFile);
            }
        }
    } catch (IOException e) {
        throw new UtilException(e);
    } finally {
        IoUtil.close(zipFileObj);
    }
    return outFile;
}

Example 30 with UtilException

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

the class ZipUtil method gzip.

/**
 * Gzip压缩处理
 *
 * @param val 被压缩的字节流
 * @return 压缩后的字节流
 * @throws UtilException IO异常
 */
public static byte[] gzip(byte[] val) throws UtilException {
    FastByteArrayOutputStream bos = new FastByteArrayOutputStream(val.length);
    GZIPOutputStream gos = null;
    try {
        gos = new GZIPOutputStream(bos);
        gos.write(val, 0, val.length);
        gos.finish();
        gos.flush();
        val = bos.toByteArray();
    } catch (IOException e) {
        throw new UtilException(e);
    } finally {
        IoUtil.close(gos);
    }
    return val;
}