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810 lines
19 KiB
HTML
810 lines
19 KiB
HTML
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<meta name="description" content="从我自己现在学校node.js说了解的情况，我觉得node.js至少比Java简单不少。使用node.js的诸多第三方框架更是让node.js简单了不少。其实express 框架几天前我就看了一些。也写了一些例子。虽然没有完全掌握，但是我想在这里和大家一起分享我学到的知识，也算是一种记录。 首先，当然我们也得安装express 的module npm install express 接下来我们就">
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<meta property="og:title" content="Node.js web框架express入门（1）">
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<meta property="og:description" content="从我自己现在学校node.js说了解的情况，我觉得node.js至少比Java简单不少。使用node.js的诸多第三方框架更是让node.js简单了不少。其实express 框架几天前我就看了一些。也写了一些例子。虽然没有完全掌握，但是我想在这里和大家一起分享我学到的知识，也算是一种记录。 首先，当然我们也得安装express 的module npm install express 接下来我们就">
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<title>Node.js web框架express入门（1） | 大染志</title>
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<h1 class="post-title" itemprop="name headline">Node.js web框架express入门（1）</h1>
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2011-10-28
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<span class="post-meta-item-text">更新于:</span>
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<time title="更新于" itemprop="dateModified" datetime="2014-07-22T16:49:04+08:00">
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2014-07-22
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<p>从我自己现在学校node.js说了解的情况，我觉得node.js至少比Java简单不少。使用node.js的诸多第三方框架更是让node.js简单了不少。其实express 框架几天前我就看了一些。也写了一些例子。虽然没有完全掌握，但是我想在这里和大家一起分享我学到的知识，也算是一种记录。</p>
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<p>首先，当然我们也得安装express 的module</p>
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<pre class="brush: xml; title: ; notranslate" title="">npm install express</pre>
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<p>接下来我们就是可以开始写一个简单的程序了。</p>
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<pre class="brush: jscript; title: ; notranslate" title="">var express = require('express'); //导入module
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var app = express.createServer(); //创建并返回一个express的server对象
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app.get('/',function (req,res){ //为跟地址目录设置路由，并且监听get方法。
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res.send("Hello,World"); //向浏览器返回hello world
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});
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app.listen(4000); //设置服务器监听4000端口
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</pre>
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<p>运行程序，然后再浏览器中输入localhost:4000试试，是不是出现了hello world了。当然这只是一个最简单的程序。下面我们可以再多做一些。</p>
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<p>这里需要说明一下。默认的，系统将在您的请求处理中，在此例里面即在app.get();里面为你添加下面两句话</p>
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<pre class="brush: jscript; title: ; notranslate" title="">res.charset='utf-8'; //系统默认的res.send()和res.render（）都默认采用utf-8编码
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res.contentType('Text/html'); //系统提供默认为Text/Html的Content-Type
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</pre>
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<p>接下来，我们将通过链接中的地址获取请求内容</p>
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<p>在程序中加入一段代码如下</p>
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<pre class="brush: jscript; title: ; notranslate" title="">app.get('/hello/:name',function (req,res){
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//如果你在地址栏中输入如下/hello/Junv.那么你将在页面中看到name=======Junv
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//'/hello/:name'中的name相当于定义一个变量name，并且把我们输入的名字赋值给他。
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res.send('name======'+req.params.name);
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});
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</pre>
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<p>试试看看吧。成功了吧！</p>
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<p>对不起，写着写着觉得很别扭。今天就写到这里吧。下次在继续吧。</p>
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</div>
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<footer class="post-footer">
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<div class="post-tags">
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<a href="/tags/教程/" rel="tag"># 教程</a>
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<a href="/tags/Node-js/" rel="tag"># Node.js</a>
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<a href="/tags/express/" rel="tag"># express</a>
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<a href="/tags/入门/" rel="tag"># 入门</a>
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</div>
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<a href="/2011/10/25/node-js-send-e-mail/" rel="next" title="使用Node.js发送电子邮件（E-mail）">
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<i class="fa fa-chevron-left"></i> 使用Node.js发送电子邮件（E-mail）
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node、express、mysql、jade实现用户登录数据获取及验证 <i class="fa fa-chevron-right"></i>
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<p class="site-author-name" itemprop="name">Junv</p>
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<p class="site-description motion-element" itemprop="description">Go, JavaScript, Ruby on Rails, Java,Docker, CI, CD, Photography</p>
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|
||
<span class="site-state-item-count">69</span>
|
||
<span class="site-state-item-name">分类</span>
|
||
</a>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
<div class="site-state-item site-state-tags">
|
||
<a href="/tags/index.html">
|
||
<span class="site-state-item-count">247</span>
|
||
<span class="site-state-item-name">标签</span>
|
||
</a>
|
||
</div>
|
||
|
||
|
||
</nav>
|
||
|
||
|
||
|
||
<div class="links-of-author motion-element">
|
||
|
||
|
||
<span class="links-of-author-item">
|
||
<a href="https://github.com/wahyd4" target="_blank" title="GitHub">
|
||
|
||
<i class="fa fa-fw fa-github"></i>
|
||
|
||
|
||
GitHub
|
||
|
||
</a>
|
||
</span>
|
||
|
||
<span class="links-of-author-item">
|
||
<a href="https://www.linkedin.com/in/junwei-zhao-46944557" target="_blank" title="LinkedIn">
|
||
|
||
<i class="fa fa-fw fa-linkedin"></i>
|
||
|
||
|
||
LinkedIn
|
||
|
||
</a>
|
||
</span>
|
||
|
||
<span class="links-of-author-item">
|
||
<a href="https://stackoverflow.com/users/1140611/junv" target="_blank" title="StackOverflow">
|
||
|
||
<i class="fa fa-fw fa-stack-overflow"></i>
|
||
|
||
|
||
StackOverflow
|
||
|
||
</a>
|
||
</span>
|
||
|
||
<span class="links-of-author-item">
|
||
<a href="http://weibo.com/wahyd4" target="_blank" title="Weibo">
|
||
|
||
<i class="fa fa-fw fa-weibo"></i>
|
||
|
||
|
||
Weibo
|
||
|
||
</a>
|
||
</span>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</section>
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</aside>
|
||
|
||
|
||
|
||
</div>
|
||
</main>
|
||
|
||
<footer id="footer" class="footer">
|
||
<div class="footer-inner">
|
||
<div class="copyright" >
|
||
|
||
©
|
||
<span itemprop="copyrightYear">2018</span>
|
||
<span class="with-love">
|
||
<i class="fa fa-heart"></i>
|
||
</span>
|
||
<span class="author" itemprop="copyrightHolder">Junv</span>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</footer>
|
||
|
||
|
||
<div class="back-to-top">
|
||
<i class="fa fa-arrow-up"></i>
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
|
||
<script type="text/javascript">
|
||
if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
|
||
window.Promise = null;
|
||
}
|
||
</script>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript" src="/lib/jquery/index.js?v=2.1.3"></script>
|
||
|
||
|
||
<script type="text/javascript" src="/lib/fastclick/lib/fastclick.min.js?v=1.0.6"></script>
|
||
|
||
|
||
<script type="text/javascript" src="/lib/jquery_lazyload/jquery.lazyload.js?v=1.9.7"></script>
|
||
|
||
|
||
<script type="text/javascript" src="/lib/velocity/velocity.min.js?v=1.2.1"></script>
|
||
|
||
|
||
<script type="text/javascript" src="/lib/velocity/velocity.ui.min.js?v=1.2.1"></script>
|
||
|
||
|
||
<script type="text/javascript" src="/lib/fancybox/source/jquery.fancybox.pack.js?v=2.1.5"></script>
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript" src="/js/src/utils.js?v=5.1.2"></script>
|
||
|
||
<script type="text/javascript" src="/js/src/motion.js?v=5.1.2"></script>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript" src="/js/src/affix.js?v=5.1.2"></script>
|
||
|
||
<script type="text/javascript" src="/js/src/schemes/pisces.js?v=5.1.2"></script>
|
||
|
||
|
||
|
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|
||
<script type="text/javascript" src="/js/src/scrollspy.js?v=5.1.2"></script>
|
||
<script type="text/javascript" src="/js/src/post-details.js?v=5.1.2"></script>
|
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|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript" src="/js/src/bootstrap.js?v=5.1.2"></script>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</body>
|
||
</html>
|