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@@ -0,0 +1,49 @@
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+# 15.3 访问并读取页面
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+
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+在下边这个程序中，数组中的url都将被访问：会发送一个简单的`http.Head()`请求查看返回值；它的声明如下：`func Head(url string) (r *Response, err error)`
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+
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+返回状态码会被打印出来。
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+
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+示例 15.7 [poll_url.go](examples/chapter_15/poll_url.go)：
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+```go
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+package main
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+
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+import (
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+ "fmt"
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+ "net/http"
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+)
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+
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+var urls = []string{
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+ "http://www.google.com/",
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+ "http://golang.org/",
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+ "http://blog.golang.org/",
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+}
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+
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+func main() {
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+ // Execute an HTTP HEAD request for all url's
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+ // and returns the HTTP status string or an error string.
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+ for _, url := range urls {
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+ resp, err := http.Head(url)
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+ if err != nil {
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+ fmt.Println("Error:", url, err)
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+ }
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+ fmt.Print(url, ": ", resp.Status)
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+ }
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+}
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+```
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+输出为：
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+```
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+http://www.google.com/ : 302 Found
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+http://golang.org/ : 200 OK
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+http://blog.golang.org/ : 200 OK
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+```
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+***译者注*** 由于国内的网络环境现状，很有可能见到如下超时错误提示：
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+```
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+Error: http://www.google.com/ Head http://www.google.com/: dial tcp 216.58.221.100:80: connectex: A connection attempt failed because the connected pa
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+rty did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
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+```
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+在下边的程序中我们使用`http.Get()`获取网页内容； `Get`的返回值`res`中的`Body`属性包含了网页内容，然后我们用`ioutil.ReadAll`把它读出来：
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+
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+示例 15.8 [http_fetch.go](examples/chapter_15/http_fetch.go)：
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+```go
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+```
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glight2000