From ebc61363c8c5afc66a43f468520f93dac54a2637 Mon Sep 17 00:00:00 2001
From: Jsbd <jingsibingdian@gmail.com>
Date: Fri, 2 Dec 2016 10:17:46 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=BAPhantomJSDownloader=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E6=96=B0=E7=9A=84=E6=9E=84=E9=80=A0=E5=87=BD=E6=95=B0=EF=BC=8C?=
 =?UTF-8?q?=E6=94=AF=E6=8C=81phantomjs=E8=87=AA=E5=AE=9A=E4=B9=89=E5=91=BD?=
 =?UTF-8?q?=E4=BB=A4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

为PhantomJSDownloader添加新的构造函数，支持phantomjs自定义命令
 example:
   *    phantomjs.exe 支持windows环境
   *    phantomjs --ignore-ssl-errors=yes 忽略抓取地址是https时的一些错误
   *    /usr/local/bin/phantomjs 命令的绝对路径，避免因系统环境变量引起的IOException
---
 .../downloader/PhantomJSDownloader.java       | 25 ++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/webmagic-extension/src/main/java/us/codecraft/webmagic/downloader/PhantomJSDownloader.java b/webmagic-extension/src/main/java/us/codecraft/webmagic/downloader/PhantomJSDownloader.java
index 532a151d..22927884 100644
--- a/webmagic-extension/src/main/java/us/codecraft/webmagic/downloader/PhantomJSDownloader.java
+++ b/webmagic-extension/src/main/java/us/codecraft/webmagic/downloader/PhantomJSDownloader.java
@@ -20,13 +20,32 @@ import java.io.*;
 public class PhantomJSDownloader extends AbstractDownloader {
 
     private static Logger logger = LoggerFactory.getLogger(PhantomJSDownloader.class);
-    private static String phantomJSPath;
+    private static String crawlJsPath;
+    private static String phantomJsCommand = "phantomjs"; // default
 
     private int retryNum;
     private int threadNum;
 
     public PhantomJSDownloader() {
-        PhantomJSDownloader.phantomJSPath = new File(this.getClass().getResource("/").getPath()).getPath() + System.getProperty("file.separator") + "crawl.js ";
+        this.initPhantomjsCrawlPath();
+    }
+    /**
+       * 添加新的构造函数，支持phantomjs自定义命令
+       * 
+       * example: 
+       *    phantomjs.exe 支持windows环境
+       *    phantomjs --ignore-ssl-errors=yes 忽略抓取地址是https时的一些错误
+       *    /usr/local/bin/phantomjs 命令的绝对路径，避免因系统环境变量引起的IOException
+       *   
+       * @param phantomJsCommand
+       */
+    public PhantomJSDownloader(String phantomJsCommand) {
+        this.initPhantomjsCrawlPath();
+        PhantomJSDownloader.phantomJsCommand = phantomJsCommand;
+    }
+    
+    private void initPhantomjsCrawlPath() {
+        PhantomJSDownloader.crawlJsPath = new File(this.getClass().getResource("/").getPath()).getPath() + System.getProperty("file.separator") + "crawl.js ";
     }
 
     @Override
@@ -67,7 +86,7 @@ public class PhantomJSDownloader extends AbstractDownloader {
         try {
             String url = request.getUrl();
             Runtime runtime = Runtime.getRuntime();
-            Process process = runtime.exec("phantomjs " + phantomJSPath + url);
+            Process process = runtime.exec(phantomJsCommand + " " + crawlJsPath + url);
             InputStream is = process.getInputStream();
             BufferedReader br = new BufferedReader(new InputStreamReader(is));
             StringBuffer stringBuffer = new StringBuffer();