记录Java8中的字符串转数组再通过指定符号拼接

1.字符串转换字符串数组

String[] nameArr = StringUtils.tokenizeToStringArray(nameAttr, MULTI_VALUE_ATTRIBUTE_DELIMITERS);  // nameAttr="made,in;china,;qqq,.aaa" ,MULTI_VALUE_ATTRIBUTE_DELIMITERS=",;."

将字符串按照指定的字符转换成String[]数组，如字符串中不包含指定字符，则将整个字符串放进数组。如指定字符有多个，是分别按所有可能出现的字符来切割的。 字符串： "made,in;china,;qqq,.aaa"     指定字符： ",;."       返回数组：[made, in, china, qqq, aaa]

/**
 * Tokenize the given {@code String} into a {@code String} array via a
 * {@link StringTokenizer}.
 * <p>Trims tokens and omits empty tokens.
 * <p>The given {@code delimiters} string can consist of any number of
 * delimiter characters. Each of those characters can be used to separate
 * tokens. A delimiter is always a single character; for multi-character
 * delimiters, consider using {@link #delimitedListToStringArray}.
 * @param str the {@code String} to tokenize (potentially {@code null} or empty)
 * @param delimiters the delimiter characters, assembled as a {@code String}
 * (each of the characters is individually considered as a delimiter)
 * @return an array of the tokens
 * @see java.util.StringTokenizer
 * @see String#trim()
 * @see #delimitedListToStringArray
 */
public static String[] tokenizeToStringArray(@Nullable String str, String delimiters) {
    return tokenizeToStringArray(str, delimiters, true, true);
}

 2.字符串数组通过某符号连接

　　Collectors.joining 收集器 支持灵活的参数配置，可以指定字符串连接时的 分隔符，前缀 和 后缀 字符串

Stream<String> stream = Arrays.stream(nameArr);

String result = stream.collect(Collectors.joining("/", "[", "]"));
System.out.println(result);
// 输出字符串 [made/in/china]