go - 为什么不使用 go-pkg-rss 返回 Atom 项目标题？

Question

要么我疯了，要么我不理解指针数组，要么图书馆坏了。也许你能帮忙。以下代码似乎可以很好地获取 Atom 项目，但查看它们的标题时返回的是空字符串。

(这恰好是通过http实现的，我不认为这是问题，但当然一切皆有可能。)

package main

import (
    "fmt"
    rss "github.com/jteeuwen/go-pkg-rss"
    "net/http"
    "os"
)

var items []*rss.Item
var channels []*rss.Channel

func hello(w http.ResponseWriter, r *http.Request) {
    feed := rss.New(5, true, chanHandler, itemHandler)
    url := "http://stackoverflow.com/feeds"
    feed.Fetch(url, nil)
    fmt.Printf("Sent fetch for %s\n", url)
    fmt.Fprintf(w, "There are %d items in %s\n\n", len(items), url)
    for key, value := range items {
        fmt.Fprintf(w, "%d: %s\n\n", key, value.Title)
    }
}

func main() {
    http.HandleFunc("/", hello)
    http.ListenAndServe(":"+os.Getenv("PORT"), nil)
}

func chanHandler(feed *rss.Feed, newchannels []*rss.Channel) {
    channels = newchannels
}

func itemHandler(feed *rss.Feed, ch *rss.Channel, newitems []*rss.Item) {
    items = newitems
}

Answer 1

“go-pkg-rss”包在读取响应方面存在一些错误。

有很多类似的包，我试着用另一个复制你的例子(我认为它更简单):

import (
    "fmt"
    "github.com/SlyMarbo/rss"
    "net/http"
    "os"
)

func hello(w http.ResponseWriter, r *http.Request) {
    url := "http://stackoverflow.com/feeds"
    feed, _ := rss.Fetch(url)
    fmt.Printf("Sent fetch for %s\n", url)
    fmt.Fprintf(w, "There are %d items in %s\n\n", len(feed.Items), url)
    for key, value := range feed.Items {
        fmt.Fprintln(w, key, value.Title)
    }
}

func main() {
    http.HandleFunc("/", hello)
    http.ListenAndServe(":"+os.Getenv("PORT"), nil)
}