for i=0 to 29
bookname(i)=request("bookname"&i)
zuozhe(i)=request("zuozhe"&i)
chubanshe(i)=request("chubanshe"&i)
outtime(i)=request("outtime"&i)
piece(i)=request("piece"&i)
leibie(i)=request("leibie"&i)
jianjie(i)=request("jianjie"&i)
if bookname(i)="" and zuozhe(i)="" and chubanshe(i)="" and outtime(i)="" and piece(i)="" and leibie(i)="" and jianjie(i)=""  Then j=i
break '这里错，该怎么写拉！！
end if
next

break改为exit for就可以