如何在Golang中为http.Get（）请求设置超时？

要添加到Volker的答案，如果除了连接超时之外还要设置读/写超时，您可以执行以下操作

package httpclient

import (
    "net"
    "net/http"
    "time"
)

func TimeoutDialer(cTimeout time.Duration, rwTimeout time.Duration) func(net, addr string) (c net.Conn, err error) {
    return func(netw, addr string) (net.Conn, error) {
        conn, err := net.DialTimeout(netw, addr, cTimeout)
        if err != nil {
            return nil, err
        }
        conn.SetDeadline(time.Now().Add(rwTimeout))
        return conn, nil
    }
}

func NewTimeoutClient(connectTimeout time.Duration, readWriteTimeout time.Duration) *http.Client {

    return &http.Client{
        Transport: &http.Transport{
            Dial: TimeoutDialer(connectTimeout, readWriteTimeout),
        },
    }
}

此代码已经过测试并正在 生产环境 中 . 这里有完整的测试要点https://gist.github.com/dmichael/5710968

conn.SetDeadlinetime.Now()