golang 写文件,golang http post

packagemainimport (' fmt ' ' io ' ' net/http ' ' OS ' ) ) var ) URL=' http://127.0.0.133601789/src/QQ.exe ' ) far=nil{Panic(err ) }io.Copy(f ) f，res.Body ) }packagemainimport ) ' buf io ' ' fmt ' ' io ' ' net/http ' OS ' ' func main () imgpath:=`e:(workspace ) ` imgurl :=' http://HB img.B0.up aiyun.com/32f 065 B3 AFB3AFB 36 b 75 a5 cbb ' (return ) deferRES.body.close )//get对象reader :=buf io.newreadersize (RES.body，32 * 1024 )=nil{Panic{err}//获取文件的writer对象writer 3360=buf io.new writer (file ) written，_:=io.copy ) writer