作用:将一个输入流写入到一个文件中
Random r = new Random();
InputStream input = body.asInputStream();
String fileName="D:\\demo\\"+DateUtil.format(newDate(),"yyyyMMddHHmmss")+"_"+r.nextInt(1000)+".pdf";
File file=new File(fileName);
if(!file.exists()){
file.createNewFile();
}
BufferedInputStream in=null;
BufferedOutputStream out=null;
in=new BufferedInputStream(input);
out=new BufferedOutputStream(new FileOutputStream(fileName));
int len=-1;
byte[] b=new byte[1024];
while((len=in.read(b))!=-1){
out.write(b,0,len);
}
in.close();
out.close();
提示:最后一定要进行本地文件输入输出流的关闭