golang获取URL
发布时间：2021-12-29 编辑：jiaochengji.com
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题目：获取指定URL的内容，然后不加解析的输出
<h2>获取一个url：</h2> <pre><code class="lang-go hljs"><span class="token keyword">package</span> main <span class="token keyword">import</span> <span class="token punctuation">(</span> <span class="token string">"fmt"</span> <span class="token string">"io/ioutil"</span> <span class="token string">"log"</span> <span class="token string">"net/http"</span> <span class="token string">"os"</span> <span class="token punctuation">)</span> <span class="token keyword">func</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token keyword">for</span> <span class="token boolean">_</span><span class="token punctuation">,</span> url <span class="token operator">:=</span> <span class="token keyword">range</span> os<span class="token punctuation">.</span>Args<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">:</span><span class="token punctuation">]</span> <span class="token punctuation">{</span> <span class="token comment">//Args保管了命令行参数,Args[0]是可执行文件本身</span> fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span> <span class="token comment">//http.Get函数产生一个http请求，如果没有出错，返回结果存在响应结构resp里面</span> resp<span class="token punctuation">,</span> err <span class="token operator">:=</span> http<span class="token punctuation">.</span><span class="token function">Get</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span> <span class="token keyword">if</span> err <span class="token operator">!=</span> <span class="token boolean">nil</span> <span class="token punctuation">{</span> log<span class="token punctuation">.</span><span class="token function">Fatal</span><span class="token punctuation">(</span>err<span class="token punctuation">)</span> <span class="token punctuation">}</span> <span class="token comment">//resp的body域包含服务器端响应的一个可读数据流</span> b<span class="token punctuation">,</span> err <span class="token operator">:=</span> ioutil<span class="token punctuation">.</span><span class="token function">ReadAll</span><span class="token punctuation">(</span>resp<span class="token punctuation">.</span>Body<span class="token punctuation">)</span><span class="token comment">//ioutil.ReadAll读取整个响应结果并存入b</span> <span class="token boolean">_</span> <span class="token operator">=</span> resp<span class="token punctuation">.</span>Body<span class="token punctuation">.</span><span class="token function">Close</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment">//关闭body数据流来避免资源泄露</span> <span class="token keyword">if</span> err <span class="token operator">!=</span> <span class="token boolean">nil</span> <span class="token punctuation">{</span> log<span class="token punctuation">.</span><span class="token function">Fatal</span><span class="token punctuation">(</span>err<span class="token punctuation">)</span> <span class="token punctuation">}</span> fmt<span class="token punctuation">.</span><span class="token function">Println</span><span class="token punctuation">(</span><span class="token function">string</span><span class="token punctuation">(</span>b<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">}</span> <span class="token punctuation">}</span> </code></pre>运行结果：
左边是客户端运行结果，右边是服务器端运行结果,服务器代码链接服务器端示例代码：（注意改端口号，该处用的8080，原服务器监听端口号为8081）
并发获取多个url:
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