运维系列（6）-- 转义特殊字符的几种方法（Java）

    //转义
    private String transformSolrMetacharactor(String input) {
        StringBuffer sb = new StringBuffer();
        String regex = "[+\-&|!(){}\[\]^"~*?:(\)]";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(input);
        while(matcher.find()){
            matcher.appendReplacement(sb, "\\"+matcher.group());
        }
        matcher.appendTail(sb);
        return sb.toString();
    }

//Lucene escape method
    public static String escape(String s) {
        StringBuilder sb = new StringBuilder();

        for(int i = 0; i < s.length(); ++i) {
            char c = s.charAt(i);
            if(c == 92 || c == 43 || c == 45 || c == 33 || c == 40 || c == 41 || c == 58 || c == 94 || c == 91 || c == 93 || c == 34 || c == 123 || c == 125 || c == 126 || c == 42 || c == 63 || c == 124 || c == 38 || c == 47) {
                sb.append("\");
            }

            sb.append(c);
        }

        return sb.toString();
    }

//replace special characters with space
        s = s.replaceAll("\pP", "");