Java Pattern Matcher 正則表達式需要轉義的字符

見：http://blog.csdn.net/bbirdsky/article/details/45368709

 

/**
 * 轉義正則特殊字符 （$()*+.[]?\^{},|）
 * 
 * @param keyword
 * @return
 */
public static String escapeExprSpecialWord(String keyword) {
    if (StringUtils.isNotBlank(keyword)) {
        String[] fbsArr = { "\\", "$", "(", ")", "*", "+", ".", "[", "]", "?", "^", "{", "}", "|" };
        for (String key : fbsArr) {
            if (keyword.contains(key)) {
                keyword = keyword.replace(key, "\\" + key);
            }
        }
    }
    return keyword;
}