Go打印结构体的field

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截取自我的博客：https://chunlife.top/

Go可以很方便的打印出结构体的<code>field</code>，不同于<code>json.Marshal()</code>操作，<code>json</code>操作有很多局限性，首先其要求结构体字段为大写字段，否则没有访问权限，其二，其会多出一步函数调用，比较麻烦。

这里又很方便既可以将结构体<code>field</code>打印出来的方法，不用区分大小写。

printf的关键字：<code>% v</code>，其中v不加<code> </code>也是有所区别的。

<pre><code class="lang-go hljs"><span class="token keyword">type</span> info <span class="token keyword">struct</span> <span class="token punctuation">{</span> Key <span class="token builtin">string</span> Value <span class="token builtin">string</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> v <span class="token operator">:=</span> info<span class="token punctuation">{</span><span class="token string">"键值"</span><span class="token punctuation">,</span> <span class="token string">"数据"</span><span class="token punctuation">}</span> bytes<span class="token punctuation">,</span> <span class="token boolean">_</span> <span class="token operator">:=</span> json<span class="token punctuation">.</span><span class="token function">Marshal</span><span class="token punctuation">(</span>v<span class="token punctuation">)</span> fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">"%v\n"</span><span class="token punctuation">,</span> v<span class="token punctuation">)</span> fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">"% v\n"</span><span class="token punctuation">,</span> v<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>bytes<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">}</span> <span class="token comment">// output</span> <span class="token comment">// {键值 数据}</span> <span class="token comment">// {Key:键值 Value:数据}</span> <span class="token comment">// {"Key":"键值","Value":"数据"}</span> </code></pre> 到此这篇关于“Go打印结构体的field”的文章就介绍到这了,更多文章或继续浏览下面的相关文章，希望大家以后多多支持JQ教程网！

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