紅寶石打開URL和救援

Question

我想，如果幾URL的EXST檢查我的舊網站收集的網址返回404

@paintings = Painting.find(:all) 
@paintings.each do |painting| 
    open("http://www.mydomain.com/" + painting.user.username.downcase + "/" + painting.permalink) 
    rescue OpenURI::HTTPError 
    @failure += painting.permalink 
    else 
    @success += painting.permalink 
    end 
    end 

嗯，我不能讓救援方法拿起錯誤

syntax error, unexpected kRESCUE, expecting kEND 
     rescue OpenURI::HTTPError 

任何想法？

Answer 1

看起來你已經忘記了begin開放之前：

begin 
    open("http://www.mydomain.com/" + painting.user.username.downcase + "/" + painting.permalink) 
rescue OpenURI::HTTPError 
    @failure += painting.permalink 
else 
    @success += painting.permalink 
end