基于linnux+phantomjs实现生成图片格式的网页快照

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基于linnux+phantomjs实现生成图片格式的网页快照_php实例

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May 16, 2016 pm 08:17 PM

phantomjs

安装扩展:
(1)下面是我在linux上的安装过程，如果没有安装git请先yum install git
安装casperjs

复制代码代码如下:

    cd /

    git clone git://github.com/n1k0/casperjs.git

    cd casperjs

    ln -sf /casperjs/bin/casperjs /usr/local/bin/casperjs  //可以忽略 实际执行中php是执行 /casperjs/bin/casperjs

    (2)安装phantomjs，下载地址：http://phantomjs.org/download.html
       下载后操作很简单，直接把解压好的in\phantomjs移动到usr\local\bin\phantomjs就可以了。
       测试phantomjs --version 有结果不报错，说明安装OK

    (3)安装字体
      1. 首先获得一套“微软雅黑”字体库（Google一下一大把），包含两个文件msyh.ttf（普通）、msyhbd.ttf（加粗）；
      2. 在/usr/share/fonts目录下建立一个子目录，例如win，命令如下：

复制代码代码如下:

# mkdir /usr/share/fonts/win

3. 将msyh.ttf和msyhbd.ttf复制到该目录下，例如这两个文件放在/root/Desktop下，使用命令：

复制代码代码如下:

 # cd /root/Desktop

 # cp msyh.ttf msyhbd.ttf  /usr/share/fonts/win/

4. 建立字体索引信息，更新字体缓存：

复制代码代码如下:

   # cd /usr/share/fonts/win

          # mkfontscale  （如果提示 mkfontscale: command not found，需自行安装 # yum install mkfontscale ）

          # mkfontdir

          # fc-cache    （如果提示 fc-cache: command not found，则需要安装# yum install fontconfig ）

至此，字体已经安装完毕！

<&#63;php 
  if (isset($_GET['url'])) 
  { 
    set_time_limit(0); 
  
    $url = trim($_GET['url']); 
    $filePath = md5($url).'.png'; 
    if (is_file($filePath)) 
    { 
      exit($filePath); 
    } 
 
    //如果不加这句就会报错“Fatal: [Errno 2] No such file or directory; did you install phantomjs&#63;”,详情参考http://mengkang.net/87.html
    putenv("PHANTOMJS_EXECUTABLE=/usr/local/bin/phantomjs");
    $command = "phantomjs phantomjs.js {$url} {$filePath}"; 
    @exec($command); 
  
    exit($filePath); 
  } 
&#63;> 
  
<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8" /> 
<meta name="viewport" content="width=device-width, initial-scale=1.0" /> 
<meta name="keywords" content="" /> 
<meta name="description" content="" /> 
<title>快照生成</title> 
<script src="http://code.jquery.com/jquery-1.8.3.min.js"></script> 
<style> 
* {margin: 0; padding: 0; } form {padding: 20px; } div {margin: 20px 0 0; } input {width: 200px; padding: 4px 2px; } #placeholder {display: none; } 
</style>
</head> 
  
<body> 
  <form action="" id="form"> 
    <input type="text" id="url" /> 
    <button type="submit">生成快照</button> 
  
    <div> 
      <img src="" alt="" id="placeholder" /> 
    </div> 
  </form> 
  <script> 
  $(function(){ 
    $('#form').submit(function(){ 
      if (typeof($(this).data('generate')) !== 'undefined' && $(this).data('generate') === true) 
      { 
        alert('正在生成网站快照，请耐心等待...'); 
        return false; 
      } 
  
      $(this).data('generate', true); 
      $('button').text('正在生成快照...').attr('disabled', true); 
  
      $.ajax({ 
        type: 'GET', 
        url: '&#63;', 
        data: 'url=' + $('#url').val(), 
        success: function(data){ 
          $('#placeholder').attr('src', data).show(); 
          $('#form').data('generate', false); 
          $('button').text('生成快照').attr('disabled', false); 
        } 
      }); 
  
      return false; 
    }); 
  }); 
  </script> 
</body> 
</html>

var page = require('webpage').create(); 
var args = require('system').args; 
 
var url = args[1]; 
var filename = args[2]; 
 
page.open(url, function () { 
  page.render(filename); 
  phantom.exit(); 
});

以上所述就是本文的全部内容了，希望大家能够喜欢。

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