按|拆分字符串

    public static void main(String[] args){
        String str = "a|b|c";
        //错误写法
        String[] strs = str.split("|");
        System.out.println("1 strs.length = " + strs.length);
        //正确写法
        strs = str.split("\\|");
        System.out.println("2 strs.length = " + strs.length);
    }