1、 在使用phantomjs的时候需要下载phantomjs,网上有window版本和Linux版本。将phantomjs放在Linux上的指定位置之后(如下面的/home/tpl/phantomjs-1.9.7-linux-x86_64/处),
2、 按照类似如下命令进行测试,是否可以生成图片(执行前检查phantomjs的权限,要有执行权限):
/home/tpl/phantomjs-1.9.7-linux-x86_64/bin/phantomjs /home/tpl/phantomjs-1.9.7-linux-x86_64/examples/test.js http://www.baidu.com /home/test/index.png |
注意上面的命令,每个之间用空格隔开,其中:
/home/tpl/phantomjs-1.9.7-linux-x86_64/bin/phantomjs表示的是phantomjs所在的位置
/home/tpl/phantomjs-1.9.7-linux-x86_64/examples/test.js表示使用快照的时候需要的一个js
http://www.baidu.com 要生成快照的页面
/home/test/index.png 表示要将截的图放在的位置
3、要使用程序生成快照,需要执行shell命令或者cmd命令
能够兼容java和windows的一段java代码如下:
package xxxxx.webservice.snapshot;
import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL;
import com.ucap.utils.OsUtils;
/** * SnapshotServiceImpl.java 用于生成快照的服务类 * * @attention 使用注意事项 * @author * @date * @note begin modify by 涂作权 2016-5-19 判断在Linux上的情况 */ public class SnapshotServiceImpl implements SnapshotService {
/** * phantomjsPath :phantomjs * /home/tpl/phantomjs-1.9.7-linux-x86_64/bin/phantomjs * /home/tpl/phantomjs-1.9.7-linux-x86_64/examples/test.js * http://xxxxx:5555/tpl/special/2016/5/19/2d0cd5d12a974e438a2f4a13300f60d2/index.html * * exportPath :导出路径,这是一个绝对路径 * * 关于phantomjs的执行命令如: * /home/tpl/phantomjs-1.9.7-linux-x86_64/bin/phantomjs * /home/tpl/phantomjs-1.9.7-linux-x86_64/examples/test.js * http://xxxx:5555/tpl/special/2016/5/19/2d0cd5d12a974e438a2f4a13300f60d2/index.html * /home/test/index.png */ public String createSnapshot(String phantomjsPath, String exportPath) { URL path = this.getClass().getClassLoader().getResource("/"); String str = path.getPath(); File file = new File(str); str = file.getParentFile().getParentFile().getParentFile() .getAbsolutePath() + "/temp" + exportPath;
String[] strArray = null;
// 判断linux的执行情况 if (OsUtils.IS_LINUX) { strArray = new String[3]; strArray[0] = "/bin/sh"; strArray[1] = "-c"; strArray[2] = phantomjsPath + " " + str; } else if (OsUtils.IS_WINDOWS) { strArray = new String[4]; strArray[0] = "cmd.exe"; strArray[1] = "/C"; strArray[2] = phantomjsPath; strArray[3] = str; }
File fileInfo = new File(str); File fi = new File(fileInfo.getParentFile().getAbsolutePath()); if (!fi.exists()) { fi.mkdirs(); }
// windows下phantomjs位置 Runtime rt = Runtime.getRuntime(); Process process = null; try { process = rt.exec(strArray); } catch (IOException e) { e.printStackTrace(); } StringBuffer sbf = null; InputStream is = null; try { is = process.getInputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(is)); sbf = new StringBuffer(); String tmp = "";
while ((tmp = br.readLine()) != null) { sbf.append(tmp); } } catch (IOException e) { e.printStackTrace(); } finally { if (is != null) { try { is.close(); } catch (IOException e) { e.printStackTrace(); } is = null; } }
return sbf.toString(); } } |
其中一个依赖的test.js如下:
var page = require('webpage').create();
//-----------------------------获取窗口的宽高信息,并设置,write by 涂作权 start------------------------------------ var winWidth = null; var winHeight = null; // 获取窗口宽度 if (window.innerWidth) { winWidth = window.innerWidth; } else if ((document.body) && (document.body.clientWidth)) { winWidth = document.body.clientWidth; } // 获取窗口高度 if (window.innerHeight) { winHeight = window.innerHeight; } else if ((document.body) && (document.body.clientHeight)) { winHeight = document.body.clientHeight; } // 通过深入 Document 内部对 body 进行检测,获取窗口大小 if (document.documentElement && document.documentElement.clientHeight && document.documentElement.clientWidth) { winHeight = document.documentElement.clientHeight; winWidth = document.documentElement.clientWidth; } page.viewportSize = {width:winWidth,height:winHeight}; page.clipRect = {top:0,left:0,width:winWidth,height:winHeight}; //-----------------------------获取窗口的宽高信息,并设置end-------------------------------------- //----------------------------------------------------------------------------------------------- page.settings = { javascriptEnabled:false, loadImages:true, userAgent:'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.31 (KHTML, like Gecko) PhantomJS/19.0' }; //-----------------------------------------------------------------------------------------------
system = require('system'); //var url = 'http://yule.club.sohu.com/gifttrade/thread/2m2efbrpfui'; var address; var loca; if(system.args.length == 1){ phantom.exit(); }else{ adress = system.args[1]; loca = system.args[2]; page.open(adress, function (status){ if (status != "success"){ console.log('FAIL to load the address'); phantom.exit(); }
page.evaluate(function(){ //此函数在目标页面执行的,上下文环境非本phantomjs,所以不能用到这个js中其他变量 //window.scrollTo(0,10000);//滚动到底部 //滚动到自适应高度 //window.document.body.scrollTop = document.body.scrollHeight;
/* window.setTimeout(function(){ var plist = document.querySelectorAll("a"); var len = plist.length; while(len) { len--; var el = plist[len]; el.style.border = "1px solid red"; } },5000);*/ });
window.setTimeout(function (){ //在本地生成截图 page.render(loca); //console.log(loca); phantom.exit(); }, 1000); }); } |