上传文件获取附件大小

public static String getFjSize(String size){ 
        String str = "0"; 
        DecimalFormat df2  = new DecimalFormat("###.0");  
        if(null!=size && size.length()>0){ 
            int s1 = Integer.parseInt(size); 
                if(s1/1024<1024){//如果小于1M 
                    str = df2.format(((double)s1/(double)1024))+"Kb"; 
                    //System.out.println(df2.format(((double)s1/(double)1024))+"kb");  
                }else if(s1/1024>=1024){//如果大于1M 
                    str = df2.format((s1/(1024*1024)))+"MB"; 
                    //System.out.println(df2.format(((double)s1/(double)(1024*1024)))+"MB");  
                }else if(s1/1024>=1024*1024){//如果大于1024MB 
                    str = df2.format((s1/(1024*1024*1024)))+"G"; 
                    //System.out.println(df2.format(((double)s1/(double)(1024*1024*1024)))+"G");  
                } 
        } 
        return str; 
    } 

摘自 那年那月那天

补充：软件开发 , Java ,