java中使用正则表达式

      String str = “dbasipo32fd次贷危机哦？？？————===0=sd-={}[]()（！@￥#……%&……*（））——）”；
            String result =  str.replaceAll("[u4e00-u9fa5]","");//中文
            result = result.replaceAll("[0-9]","");//数字
            result = result.replaceAll("[a-zA-Z]","");//英文字母
            result = result.replaceAll("[+]","");//+号
            result = result.replaceAll("[-]","");
            result = result.replaceAll("[#]","");
            result = result.replaceAll("[_]","");
            result = result.replaceAll("[.]","");
            result = result.replaceAll("[;]","");
            result = result.replaceAll("[\[]","");
            result = result.replaceAll("[\]]","");
            result = result.replaceAll("[（]","");
            result = result.replaceAll("[）]","");
            result = result.replaceAll("[ ]","");
            result = result.replaceAll("[≠]","");