Go语言爬虫教程：抓取网页标题方法
时间：2026-02-11 23:53:31
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你在学习Golang相关的知识吗？本文《Go语言实现网页标题抓取爬虫教程》，主要介绍的内容就涉及到，如果你想提升自己的开发能力，就不要错过这篇文章，大家要知道编程理论基础和实战操作都是不可或缺的哦！
使用Golang和goquery库可轻松抓取网页标题。首先安装goquery依赖，然后通过net/http发起GET请求获取网页内容，再用goquery.NewDocumentFromReader解析HTML，利用doc.Find("title").Text()提取标题文本。示例代码展示了从https://httpbin.org/html抓取标题的过程，并包含错误处理。为提高健壮性，建议设置HTTP客户端超时、添加User-Agent头以避免被屏蔽，同时检查响应状态码和Content-Type类型。该方法适用于小型爬虫或页面监控任务。
使用Golang和goquery库抓取网页标题非常简单。你只需要发送一个HTTP请求获取网页内容，然后用goquery解析HTML并提取</code>标签的文本即可。</p><h3>安装依赖</h3><p>首先确保你安装了<code>goquery</code>库，它依赖于<code>net/html</code>和第三方的<code>casbin/parse</code>。运行以下命令安装：</p><font face="Courier New"><pre>go get github.com/PuerkitoBio/goquery</pre></font><h3>发送HTTP请求并解析HTML</h3><p>Golang标准库中的<code>net/http</code>可以用来发起GET请求。将响应体传给<code>goquery.NewDocumentFromReader</code>，就可以用jQuery风格的选择器提取数据。</p><p>以下是一个完整示例，抓取指定URL的网页标题：</p><p><font face="Courier New"></font></p><pre>package main
<p>import (
"fmt"
"log"
"net/http"</p><pre class="brush:php;toolbar:false;">"github.com/PuerkitoBio/goquery"</pre><p>)</p><p>func fetchTitle(url string) {
// 发起HTTP GET请求
resp, err := http.Get(url)
if err != nil {
log.Printf("请求失败: %v", err)
return
}
defer resp.Body.Close()</p><pre>// 确保状态码是200
if resp.StatusCode != http.StatusOK {
log.Printf("HTTP错误: %d", resp.StatusCode)
return
}
// 使用goquery解析响应体
doc, err := goquery.NewDocumentFromReader(resp.Body)
if err != nil {
log.Printf("解析HTML失败: %v", err)
return
}
// 查找title标签并获取内容
title := doc.Find("title").Text()
if title == "" {
fmt.Println("未找到标题")
} else {
fmt.Printf("标题: %s\n", title)
}</pre><p>}</p><p>func main() {
fetchTitle("<a target='_blank' href='https://www.17golang.com/gourl/?redirect=MDAwMDAwMDAwML57hpSHp6VpkrqbYLx2eayza4KafaOkbLS3zqSBrJvPsa5_0Ia6sWuR4Juaq6t9nq5roGCUgXuytMyerpV6iZXHe3vUmsyZr5vTk6bDeoKox3yFmnmyhqK_qrtog3Z4lb6InJSSp62xhph6mq-cm2i0jaCcfbOdorLdtKSCiYSXva6coQ' rel='nofollow'>https://httpbin.org/html</a>")
}</p></pre><h3>处理常见问题</h3><p>实际使用中可能遇到网络超时、重定向、非UTF-8编码等问题。可以优化请求客户端来增强健壮性：</p><ul><li>设置超时时间避免卡住</li><li>检查Content-Type确保是HTML</li><li>对某些网站可能需要设置User-Agent防止被屏蔽</li></ul><p><font face="Courier New"></font></p><pre>client := &http.Client{
Timeout: 10 * time.Second,
}
req, _ := http.NewRequest("GET", url, nil)
req.Header.Set("User-Agent", "Mozilla/5.0 (compatible; GoCrawler/1.0)")
<p>resp, err := client.Do(req)</p></pre><p>基本上就这些。用<code>goquery</code>提取网页标题简洁高效，适合小型爬虫或监控任务。</p><p>以上就是《Go语言爬虫教程：抓取网页标题方法》的详细内容，更多关于的资料请关注golang学习网公众号！</p>
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