java html实体转义

    public static void main(String[] args) {

        String str = " -<->-&-"-'";

        String unescapeHtml4 = StringEscapeUtils.unescapeHtml4(str);
        System.out.println(unescapeHtml4);
        String escapeHtml4 = StringEscapeUtils.escapeHtml4(unescapeHtml4);
        System.out.println(escapeHtml4);

        String unescapeHtml3 = StringEscapeUtils.unescapeHtml3(str);
        System.out.println(unescapeHtml3);
        String escapeHtml3 = StringEscapeUtils.escapeHtml3(unescapeHtml3);
        System.out.println(escapeHtml3);


    }