public class TestDemo {

    @Test
    public void test() throws IOException {
        String sendMsg = "{\"expiredTime\":\"20190726135831\",\"drives\":\"androidgetui\",\"msgBody\":\"{\\\"serialNumber\\\":\\\"wow22019072611349502\\\",\\\"push_key\\\":\\\"appactive#549110277\\\",\\\"title\\\":\\\"\\xe6\\x9c\\x89\\xe4\\xba\\xba@\\xe4\\xbd\\xa0\\\",\\\"message\\\":\\\"\\xe4\\xbb\\x8a\\xe5\\xa4\\xa9\\xe5\\x87\\xa0\\xe7\\x82\\xb9\\xe5\\x87\\xba\\xe5\\x8f\\x91\\xef\\xbc\\x9f\\\",\\\"link\\\":\\\"chelaile://homeTab/home?select=3\\\",\\\"open_type\\\":0,\\\"expireDays\\\":\\\"30\\\",\\\"type\\\":14}\",\"clients\":[\"13065ffa4e25c4a7c68\"]}CHELAILE_PUSH{\"cityId\":\"007\",\"gpsTime\":\"2019-07-24 21:33:06\",\"lat\":\"30.605916\",\"lng\":\"103.980439\",\"s\":\"android\",\"sourceUdid\":\"a4419b93-fb0e-43c7-98fa-5b7c18255660\",\"token\":\"13065ffa4e25c4a7c68\",\"tokenType\":\"3\",\"udid\":\"UDID2TOKEN#a4419b93-fb0e-43c7-98fa-5b7c18255660\",\"userCreateTime\":\"2018-04-20 08:13:32\",\"userLastActiveTime\":\"2019-07-24 21:33:06\",\"vc\":\"150\"}";
        String[] dataArr = StringUtils.split(sendMsg,"CHELAILE_PUSH");
        Assert.assertEquals(dataArr.length,2);
    }
}

/**
 * 
 * <pre>
 * StringUtils.split(null, *)         = null
 * StringUtils.split("", *)           = []
 * StringUtils.split("abc def", null) = ["abc", "def"]
 * StringUtils.split("abc def", " ")  = ["abc", "def"]
 * StringUtils.split("abc  def", " ") = ["abc", "def"]
 * StringUtils.split("ab:cd:ef", ":") = ["ab", "cd", "ef"]
 * </pre>
 *
 * @param str  要解析的字符串，可能为空
 * @param separatorChars  用做分割字符的字符们（注意是字符串们哦！），当 separatorChars 传入的值为空的时候则用空格来做分隔符
 */
public static String[] split(final String str, final String separatorChars) {
    return splitWorker(str, separatorChars, -1, false);
}

/**
 * Performs the logic for the {@code split} and
 * {@code splitPreserveAllTokens} methods that return a maximum array
 * length.
 *
 * @param str  the String to parse, may be {@code null}
 * @param separatorChars the separate character
 * @param max  the maximum number of elements to include in the
 *  array. A zero or negative value implies no limit.
 * @param preserveAllTokens if {@code true}, adjacent separators are
 * treated as empty token separators; if {@code false}, adjacent
 * separators are treated as one separator.
 * @return an array of parsed Strings, {@code null} if null String input
 */
private static String[] splitWorker(final String str, final String separatorChars, final int max, final boolean preserveAllTokens) {
    // Performance tuned for 2.0 (JDK1.4)
    // Direct code is quicker than StringTokenizer.
    // Also, StringTokenizer uses isSpace() not isWhitespace()

    if (str == null) {
        return null;
    }
    final int len = str.length();
    if (len == 0) {
        return ArrayUtils.EMPTY_STRING_ARRAY;
    }
    final List<String> list = new ArrayList<>();
    int sizePlus1 = 1;
    int i = 0, start = 0;
    boolean match = false;
    boolean lastMatch = false;
    if (separatorChars == null) {
        
        // 用空格作为分隔符切割字符串
        while (i < len) {
            if (Character.isWhitespace(str.charAt(i))) {
                if (match || preserveAllTokens) {
                    lastMatch = true;
                    if (sizePlus1++ == max) {
                        i = len;
                        lastMatch = false;
                    }
                    list.add(str.substring(start, i));
                    match = false;
                }
                start = ++i;
                continue;
            }
            lastMatch = false;
            match = true;
            i++;
        }
    } else if (separatorChars.length() == 1) {
        // 分隔符的字符数为 1 的时候，切割字符串的逻辑
        final char sep = separatorChars.charAt(0);
        while (i < len) {
            if (str.charAt(i) == sep) {
                if (match || preserveAllTokens) {
                    lastMatch = true;
                    if (sizePlus1++ == max) {
                        i = len;
                        lastMatch = false;
                    }
                    list.add(str.substring(start, i));
                    match = false;
                }
                start = ++i;
                continue;
            }
            lastMatch = false;
            match = true;
            i++;
        }
    } else {
        // 当分隔符的字符数为多个的时候，分割字符串的逻辑
        // 示例：分隔字符串 abc，分割字符串的分隔符可以是 a,ab,abc
        while (i < len) {
            if (separatorChars.indexOf(str.charAt(i)) >= 0) {
                if (match || preserveAllTokens) {
                    lastMatch = true;
                    if (sizePlus1++ == max) {
                        i = len;
                        lastMatch = false;
                    }
                    list.add(str.substring(start, i));
                    match = false;
                }
                start = ++i;
                continue;
            }
            lastMatch = false;
            match = true;
            i++;
        }
    }
    if (match || preserveAllTokens && lastMatch) {
        list.add(str.substring(start, i));
    }
    return list.toArray(new String[list.size()]);
}