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<!DOCTYPE html>
<!--[if IEMobile 7 ]><html class="no-js iem7"><![endif]-->
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<div class="blog-index">
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/03/13/about-how-to-design-a-worker-queue-style-node-js-application-server/">About How to Design a Worker Queue Style Node Js Application Server</a></h1>
<p class="meta">
<time datetime="2013-03-13T01:58:00-04:00" pubdate data-updated="true">Mar 13<span>th</span>, 2013</time>
| <a href="/blog/2013/03/13/about-how-to-design-a-worker-queue-style-node-js-application-server/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content">
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/03/07/about-how-to-make-phantomjs-support-google-web-fonts/">About How to Make Phantomjs Render Google Embeded Web Fonts Correctly</a></h1>
<p class="meta">
<time datetime="2013-03-07T14:57:00-05:00" pubdate data-updated="true">Mar 7<span>th</span>, 2013</time>
| <a href="/blog/2013/03/07/about-how-to-make-phantomjs-support-google-web-fonts/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><blockquote><p>Currently, before 1.8.1 version, phantomjs doesn’t support WOFF files, a fix is to use
https://github.com/Vitallium ‘s commit which has fixed WOFF file support issue. But you have to compile it from source, it takes a long time if your computer is not powerful enough. On my Quad-Core i7 laptop, it uses 10-15 minutes. On my EC2 dul-core middle instance, it compiles forever…</p></blockquote>
<p><em>The Web Open Font Format (WOFF) is a font format for use in web pages</em></p>
<p>To do:</p>
<blockquote><p>1) Checkout PhantomJS 1.X version as described in the official instruction: http://phantomjs.org/build.html</p></blockquote>
<figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
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</pre></td><td class='code'><pre><code class=''><span class='line'>// For Ubuntu Linux (tested on a barebone install of Ubuntu 10.04 Lucid Lynx and Ubuntu 11.04 Natty Narwhal):
</span><span class='line'>
</span><span class='line'>sudo apt-get install build-essential chrpath git-core libssl-dev libfontconfig1-dev
</span><span class='line'>git clone git://github.com/ariya/phantomjs.git
</span><span class='line'>cd phantomjs
</span><span class='line'>git checkout 1.8
</span><span class='line'>//./build.sh
</span><span class='line'>
</span><span class='line'>// On Mac OS, Install Xcode and the necessary SDK for development (gcc, various tools, libraries, etc).
</span><span class='line'>
</span><span class='line'>git clone git://github.com/ariya/phantomjs.git
</span><span class='line'>cd phantomjs
</span><span class='line'>git checkout 1.8
</span><span class='line'>//./build.sh
</span></code></pre></td></tr></table></div></figure>
<p><strong> Note that by don’t ./build.sh now, cause it’s the master branch of the phantomjs, so, after checkout, don’t build. </strong></p>
<blockquote><p>2) Add the remote repo which contains the needed branch:</p></blockquote>
</div>
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<a rel="full-article" href="/blog/2013/03/07/about-how-to-make-phantomjs-support-google-web-fonts/">Read on →</a>
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</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/27/about-how-to-embed-image-into-one-single-html/">About How to Embed Image Into One Single Html</a></h1>
<p class="meta">
<time datetime="2013-02-27T13:48:00-05:00" pubdate data-updated="true">Feb 27<span>th</span>, 2013</time>
| <a href="/blog/2013/02/27/about-how-to-embed-image-into-one-single-html/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
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</pre></td><td class='code'><pre><code class='java'><span class='line'><span class="kd">private</span> <span class="kd">static</span> <span class="n">String</span> <span class="nf">embed</span><span class="o">(</span><span class="n">File</span> <span class="n">htmlFile</span><span class="o">)</span> <span class="o">{</span>
</span><span class='line'>
</span><span class='line'> <span class="n">String</span> <span class="n">final_return</span> <span class="o">=</span> <span class="s">"error"</span><span class="o">;</span>
</span><span class='line'>
</span><span class='line'> <span class="k">try</span> <span class="o">{</span>
</span><span class='line'>
</span><span class='line'> <span class="n">BufferedReader</span> <span class="n">br</span> <span class="o">=</span> <span class="k">new</span> <span class="n">BufferedReader</span><span class="o">(</span><span class="k">new</span> <span class="n">FileReader</span><span class="o">(</span><span class="n">htmlFile</span><span class="o">));</span>
</span><span class='line'>
</span><span class='line'> <span class="n">StringBuilder</span> <span class="n">sb</span> <span class="o">=</span> <span class="k">new</span> <span class="n">StringBuilder</span><span class="o">();</span>
</span><span class='line'>
</span><span class='line'> <span class="n">String</span> <span class="n">line</span> <span class="o">=</span> <span class="s">""</span><span class="o">;</span>
</span><span class='line'>
</span><span class='line'> <span class="k">while</span> <span class="o">((</span><span class="n">line</span> <span class="o">=</span> <span class="n">br</span><span class="o">.</span><span class="na">readLine</span><span class="o">())</span> <span class="o">!=</span> <span class="kc">null</span><span class="o">)</span> <span class="o">{</span>
</span><span class='line'> <span class="n">sb</span><span class="o">.</span><span class="na">append</span><span class="o">(</span><span class="n">line</span><span class="o">);</span>
</span><span class='line'> <span class="o">}</span>
</span><span class='line'>
</span><span class='line'> <span class="n">br</span><span class="o">.</span><span class="na">close</span><span class="o">();</span>
</span><span class='line'>
</span><span class='line'> <span class="n">String</span> <span class="n">htmlContent</span> <span class="o">=</span> <span class="n">sb</span><span class="o">.</span><span class="na">toString</span><span class="o">();</span>
</span><span class='line'>
</span><span class='line'> <span class="n">org</span><span class="o">.</span><span class="na">jsoup</span><span class="o">.</span><span class="na">nodes</span><span class="o">.</span><span class="na">Document</span> <span class="n">doc</span> <span class="o">=</span> <span class="n">Jsoup</span><span class="o">.</span><span class="na">parse</span><span class="o">(</span><span class="n">htmlContent</span><span class="o">);</span>
</span><span class='line'>
</span><span class='line'> <span class="n">Elements</span> <span class="n">images</span> <span class="o">=</span> <span class="n">doc</span><span class="o">.</span><span class="na">getElementsByTag</span><span class="o">(</span><span class="s">"img"</span><span class="o">);</span>
</span><span class='line'>
</span><span class='line'> <span class="k">for</span> <span class="o">(</span><span class="n">Element</span> <span class="n">image</span> <span class="o">:</span> <span class="n">images</span><span class="o">)</span> <span class="o">{</span>
</span><span class='line'>
</span><span class='line'> <span class="n">String</span> <span class="n">imgName</span> <span class="o">=</span> <span class="n">image</span><span class="o">.</span><span class="na">attr</span><span class="o">(</span><span class="s">"src"</span><span class="o">);</span>
</span><span class='line'>
</span><span class='line'> <span class="c1">// we surppose image files are in the same folder with the html file.</span>
</span><span class='line'> <span class="n">File</span> <span class="n">tempImageFile</span> <span class="o">=</span> <span class="k">new</span> <span class="n">File</span><span class="o">(</span><span class="n">file</span><span class="o">.</span><span class="na">getParentFile</span><span class="o">().</span><span class="na">getAbsoluteFile</span><span class="o">()+</span><span class="s">"/"</span><span class="o">+</span> <span class="n">imgName</span><span class="o">);</span>
</span><span class='line'>
</span><span class='line'> <span class="k">if</span> <span class="o">(</span><span class="n">tempImageFile</span><span class="o">.</span><span class="na">exists</span><span class="o">()</span> <span class="o">&&</span> <span class="n">imgName</span><span class="o">.</span><span class="na">trim</span><span class="o">()</span> <span class="o">!=</span> <span class="s">""</span><span class="o">)</span> <span class="o">{</span>
</span><span class='line'>
</span><span class='line'> <span class="n">String</span> <span class="n">imageString</span> <span class="o">=</span> <span class="k">new</span> <span class="n">String</span><span class="o">(</span>
</span><span class='line'>
</span><span class='line'> <span class="n">Base64</span><span class="o">.</span><span class="na">encodeBase64</span><span class="o">(</span><span class="n">FileUtils</span><span class="o">.</span><span class="na">readFileToByteArray</span><span class="o">(</span><span class="n">tempImageFile</span><span class="o">)));</span>
</span><span class='line'>
</span><span class='line'> <span class="n">image</span><span class="o">.</span><span class="na">attr</span><span class="o">(</span><span class="s">"src"</span><span class="o">,</span> <span class="s">"data:image;base64,"</span> <span class="o">+</span> <span class="n">imageString</span><span class="o">);</span>
</span><span class='line'>
</span><span class='line'> <span class="o">}</span>
</span><span class='line'>
</span><span class='line'> <span class="k">else</span> <span class="o">{</span>
</span><span class='line'>
</span><span class='line'> <span class="c1">// if the image file not exist, just put a empty string in it or leave it as it was</span>
</span><span class='line'> <span class="n">image</span><span class="o">.</span><span class="na">attr</span><span class="o">(</span><span class="s">"src"</span><span class="o">,</span> <span class="s">"data:image;base64,"</span> <span class="o">+</span> <span class="s">""</span><span class="o">);</span>
</span><span class='line'>
</span><span class='line'> <span class="o">}</span>
</span><span class='line'>
</span><span class='line'> <span class="o">}</span>
</span><span class='line'>
</span><span class='line'> <span class="n">final_return</span> <span class="o">=</span> <span class="n">doc</span><span class="o">.</span><span class="na">toString</span><span class="o">();</span>
</span><span class='line'>
</span><span class='line'> <span class="o">}</span> <span class="k">catch</span> <span class="o">(</span><span class="n">Exception</span> <span class="n">e</span><span class="o">)</span> <span class="o">{</span>
</span><span class='line'>
</span><span class='line'> <span class="c1">//do stuff...</span>
</span><span class='line'> <span class="o">}</span>
</span><span class='line'>
</span><span class='line'> <span class="k">return</span> <span class="n">final_return</span><span class="o">;</span>
</span><span class='line'>
</span><span class='line'> <span class="o">}</span>
</span></code></pre></td></tr></table></div></figure>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/27/about-java-socket/">Java Core Series 2: About Java Socket</a></h1>
<p class="meta">
<time datetime="2013-02-27T00:48:00-05:00" pubdate data-updated="true">Feb 27<span>th</span>, 2013</time>
| <a href="/blog/2013/02/27/about-java-socket/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>COMMING SOON …</p>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/27/about-java-io/">Java Core Series 1: About Java IO</a></h1>
<p class="meta">
<time datetime="2013-02-27T00:39:00-05:00" pubdate data-updated="true">Feb 27<span>th</span>, 2013</time>
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</p>
</header>
<div class="entry-content"><p>COMMING SOON …</p>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/26/about-how-to-get-mime-types-using-java/">About How to Get Mime Types Using Java</a></h1>
<p class="meta">
<time datetime="2013-02-26T13:14:00-05:00" pubdate data-updated="true">Feb 26<span>th</span>, 2013</time>
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</p>
</header>
<div class="entry-content"><p><em>1. using javax.activation.MimetypesFileTypeMap</em></p>
<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
</pre></td><td class='code'><pre><code class='java'><span class='line'> <span class="n">File</span> <span class="n">f</span> <span class="o">=</span> <span class="k">new</span> <span class="n">File</span><span class="o">(</span><span class="s">"test.docx"</span><span class="o">);</span>
</span><span class='line'> <span class="n">String</span> <span class="n">mimeType</span> <span class="o">=</span> <span class="k">new</span> <span class="n">MimetypesFileTypeMap</span><span class="o">().</span><span class="na">getContentType</span><span class="o">(</span><span class="n">f</span><span class="o">);</span>
</span></code></pre></td></tr></table></div></figure>
<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
</pre></td><td class='code'><pre><code class='java'><span class='line'><span class="nl">result:</span>
</span><span class='line'><span class="n">Mime</span> <span class="n">Type</span> <span class="n">of</span> <span class="o">.</span><span class="na">DS_Store</span> <span class="n">is</span> <span class="n">application</span><span class="o">/</span><span class="n">octet</span><span class="o">-</span><span class="n">stream</span>
</span><span class='line'><span class="n">Mime</span> <span class="n">Type</span> <span class="n">of</span> <span class="mi">444</span><span class="o">.</span><span class="na">docx</span> <span class="n">is</span> <span class="n">application</span><span class="o">/</span><span class="n">octet</span><span class="o">-</span><span class="n">stream</span>
</span><span class='line'><span class="n">Mime</span> <span class="n">Type</span> <span class="n">of</span> <span class="n">f</span><span class="o">.</span><span class="na">jar</span> <span class="n">is</span> <span class="n">application</span><span class="o">/</span><span class="n">octet</span><span class="o">-</span><span class="n">stream</span>
</span><span class='line'><span class="n">Mime</span> <span class="n">Type</span> <span class="n">of</span> <span class="n">Non</span><span class="o">-</span><span class="n">Disclosure</span> <span class="n">Agreement</span><span class="o">.</span><span class="na">docx</span> <span class="n">is</span> <span class="n">application</span><span class="o">/</span><span class="n">octet</span><span class="o">-</span><span class="n">stream</span>
</span><span class='line'><span class="n">Mime</span> <span class="n">Type</span> <span class="n">of</span> <span class="n">W9</span> <span class="n">Form</span><span class="o">.</span><span class="na">pddf</span> <span class="n">is</span> <span class="n">application</span><span class="o">/</span><span class="n">octet</span><span class="o">-</span><span class="n">stream</span>
</span></code></pre></td></tr></table></div></figure>
<p><em>2. Write yourself</em></p>
</div>
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<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/26/journal/">Journal</a></h1>
<p class="meta">
<time datetime="2013-02-26T00:14:00-05:00" pubdate data-updated="true">Feb 26<span>th</span>, 2013</time>
| <a href="/blog/2013/02/26/journal/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>今天做了一些关于Docx转换Html的研究, 发现Java现在并无什么很完美的解决方案, 主要是转换效果不佳, 公司想要的Header里的图片没有任何一个Java的开源解决方案可以完美的转换的. 一天搞来搞去, 没有任何成果. 这半年时间做开发的工作, 感觉自己并非非常关心具体的细节实现, 而是对数据传输和系统架构比较有兴趣. 未来怎么走, 变数还很大.</p>
<p>三月的目标:</p>
<ol>
<li>签证问题搞清楚, 争取准时寄出.</li>
<li>选择一门脚本语言或者更加高层的语言学习熟悉.</li>
<li>把pdftojson完善, 提高并发性能.</li>
<li>完善rtf,docx,doc to html, 提高并发性能.</li>
<li>最好把MQ实现出来.</li>
</ol>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/25/about-how-to-convert-docx-slash-doc-slash-rtf-into-html-using-java/">About How to Convert Docx/doc/rtf Into Html Using JAVA</a></h1>
<p class="meta">
<time datetime="2013-02-25T12:06:00-05:00" pubdate data-updated="true">Feb 25<span>th</span>, 2013</time>
| <a href="/blog/2013/02/25/about-how-to-convert-docx-slash-doc-slash-rtf-into-html-using-java/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Actually, there is one solution, “One sulution to rule them all” . That is to use OpenOffice as the background service to convert them all. You can implement this remote call by yourself, but someone already wrote a java library to provide a high level API for us to use called JODConverter.</p>
<p>http://code.google.com/p/jodconverter/</p>
<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
<span class='line-number'>10</span>
<span class='line-number'>11</span>
<span class='line-number'>12</span>
<span class='line-number'>13</span>
<span class='line-number'>14</span>
<span class='line-number'>15</span>
<span class='line-number'>16</span>
</pre></td><td class='code'><pre><code class='java'><span class='line'> <span class="n">OfficeManager</span> <span class="n">officeManager</span> <span class="o">=</span> <span class="k">new</span> <span class="n">DefaultOfficeManagerConfiguration</span><span class="o">()</span>
</span><span class='line'> <span class="c1">//2 ports indicate 2 working processes to do the conversion.</span>
</span><span class='line'> <span class="o">.</span><span class="na">setPortNumbers</span><span class="o">(</span><span class="mi">8100</span><span class="o">,</span> <span class="mi">8101</span><span class="o">)</span>
</span><span class='line'> <span class="c1">//restart openoffice working process after every 30 conversions to prevent memory leak of the working process. (unsolved issue of openoffice)</span>
</span><span class='line'> <span class="o">.</span><span class="na">setMaxTasksPerProcess</span><span class="o">(</span><span class="mi">30</span><span class="o">)</span>
</span><span class='line'> <span class="c1">//untouched tasks in the queue that over 1200000ms will be discarded.(get a officeManager not found exception)</span>
</span><span class='line'> <span class="o">.</span><span class="na">setTaskQueueTimeout</span><span class="o">(</span><span class="mi">1200000</span><span class="o">)</span>
</span><span class='line'> <span class="c1">//if one task processing time over 20000ms, it will throw an exception.</span>
</span><span class='line'> <span class="o">.</span><span class="na">setTaskExecutionTimeout</span><span class="o">(</span><span class="mi">20000</span><span class="o">)</span>
</span><span class='line'> <span class="o">.</span><span class="na">buildOfficeManager</span><span class="o">();</span>
</span><span class='line'>
</span><span class='line'> <span class="n">officeManager</span><span class="o">.</span><span class="na">start</span><span class="o">();</span>
</span><span class='line'> <span class="n">OfficeDocumentConverter</span> <span class="n">converter</span> <span class="o">=</span> <span class="k">new</span> <span class="n">OfficeDocumentConverter</span><span class="o">(</span><span class="n">officeManager</span><span class="o">);</span>
</span><span class='line'> <span class="n">converter</span><span class="o">.</span><span class="na">convert</span><span class="o">(</span><span class="k">new</span> <span class="n">File</span><span class="o">(</span><span class="n">filepath1</span><span class="o">),</span> <span class="k">new</span> <span class="n">File</span><span class="o">(</span><span class="n">filepath2</span><span class="o">));</span>
</span><span class='line'>
</span><span class='line'> <span class="n">officeManager</span><span class="o">.</span><span class="na">stop</span><span class="o">();</span>
</span></code></pre></td></tr></table></div></figure>
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<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/25/about-using-java-version-libsvm-do-classcification/">How to Use Libsvm to Do Classification With Java</a></h1>
<p class="meta">
<time datetime="2013-02-25T00:19:00-05:00" pubdate data-updated="true">Feb 25<span>th</span>, 2013</time>
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</p>
</header>
<div class="entry-content"><p><strong>A real example from data preparing to train the model to finally do the classification included</strong></p>
<p>Comming soon…</p>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/02/24/chinese-language-test-in-octopress/">Octopress的中文使用测试</a></h1>
<p class="meta">
<time datetime="2013-02-24T22:39:00-05:00" pubdate data-updated="true">Feb 24<span>th</span>, 2013</time>
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</p>
</header>
<div class="entry-content"><p>试试中文在Octopress中的表现如何</p>
<p>测试文章:</p>
<p>来自美国宇航局太阳动力学天文台的最新观测，显示了太阳表面发生新的喷发事件。太阳耀斑和日冕物质抛射等太阳活动可导致外层结构出现的变化，这些复 杂的现象与太阳表面大气运动相联系，并受到磁场线的影响。在2012年7月19日，太阳表面爆发了一次强度较大的太阳耀斑事件，发射出大量的光和辐射，接 下来就是日冕物质抛射阶段，在磁场作用下，整个爆发事件变得异常诡异，这一现象被称为“日冕雨”。</p>
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<p>An architect who build the future with code … </p>
<p>程序员?码农?做IT的? 我不喜欢这些名字. 我是一个建筑师, 用代码来构建未来.</p>
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