Groovy下载文件并实时显示下载进度

def stream = new URL("http://sw.bos.baidu.com/sw-search-sp/software/ae80092c654/IQIYIsetup_1001_5.3.21.2659.exe").openStream() def stream2 = new URL("http://sw.bos.baidu.com/sw-search-sp/software/ae80092c654/IQIYIsetup_1001_5.3.21.2659.exe").openConnection() def total = stream2.getContentLength() println "初始文件大小为："+(total/1024/1024)+"M" def len def hasRead=0; byte[] arr=new byte[1024] def out=new FileOutputStream("IQIYIsetup_1001_5.3.21.2659.exe") def lastResult=0 while ((len=stream.read(arr))!=-1){ out.write(arr,0,len) hasRead+=len def decimal = hasRead/total*100+"" if(!decimal.equals("100")) decimal=decimal.substring(0,decimal.indexOf(".")) if(lastResult.equals(Integer.parseInt(decimal))){ lastResult++ println "下载进度："+ decimal+"%" } } stream.close() out.close() println("下载完成！") 控制台输出如下： 初始文件大小为：36.3428955078125M 下载进度：0% 下载进度：1% 下载进度：2% 下载进度：3% 下载进度：4% . . . .