add list output support

webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/ConsolePipeline.java

@@ -20,6 +20,15 @@ public class ConsolePipeline implements  Pipeline{
         }
         System.out.println("get page: "+resultItems.getRequest().getUrl());
         for (Map.Entry<String, Object> entry : resultItems.getAll().entrySet()) {
+            if (entry.getValue() instanceof Iterable) {
+                Iterable value = (Iterable) entry.getValue();
+                System.out.println(entry.getKey() + ":");
+                for (Object o : value) {
+                    System.out.println(o);
+                }
+            } else {
+                System.out.println(entry.getKey() + ":\t" + entry.getValue());
+            }
             System.out.println(entry.getKey()+":\t"+entry.getValue());
         }
     }

webmagic-core/src/main/java/us/codecraft/webmagic/pipeline/FilePipeline.java

@@ -13,6 +13,7 @@ import java.util.Map;
 
 /**
  * 持久化到文件的接口。
+ *
  * @author code4crafter@gmail.com <br>
  *         Date: 13-4-21
  *         Time: 下午6:28
@@ -32,6 +33,7 @@ public class FilePipeline implements Pipeline {
 
     /**
      * 新建一个FilePipeline
+     *
      * @param path 文件保存路径
      */
     public FilePipeline(String path) {
@@ -45,18 +47,26 @@ public class FilePipeline implements Pipeline {
         if (!file.exists()) {
             file.mkdirs();
         }
-        if (resultItems.isSkip()){
+        if (resultItems.isSkip()) {
             return;
         }
         try {
-            PrintWriter printWriter = new PrintWriter(new FileWriter(path + DigestUtils.md5Hex(resultItems.getRequest().getUrl())+".html"));
+            PrintWriter printWriter = new PrintWriter(new FileWriter(path + DigestUtils.md5Hex(resultItems.getRequest().getUrl()) + ".html"));
             printWriter.println("url:\t" + resultItems.getRequest().getUrl());
             for (Map.Entry<String, Object> entry : resultItems.getAll().entrySet()) {
-                printWriter.println(entry.getKey()+":\t"+entry.getValue());
+                if (entry.getValue() instanceof Iterable) {
+                    Iterable value = (Iterable) entry.getValue();
+                    printWriter.println(entry.getKey() + ":");
+                    for (Object o : value) {
+                        printWriter.println(o);
+                    }
+                } else {
+                    printWriter.println(entry.getKey() + ":\t" + entry.getValue());
+                }
             }
             printWriter.close();
         } catch (IOException e) {
-            logger.warn("write file error",e);
+            logger.warn("write file error", e);
         }
     }
 }

webmagic-samples/src/main/java/us/codecraft/webmagic/samples/InfoQMiniBookProcessor.java

+package us.codecraft.webmagic.samples;
+
+import org.apache.commons.collections.CollectionUtils;
+import us.codecraft.webmagic.Page;
+import us.codecraft.webmagic.Site;
+import us.codecraft.webmagic.Spider;
+import us.codecraft.webmagic.pipeline.FilePipeline;
+import us.codecraft.webmagic.processor.PageProcessor;
+import us.codecraft.webmagic.scheduler.RedisScheduler;
+
+import java.util.List;
+
+/**
+ * @author code4crafter@gmail.com <br>
+ *         Date: 13-4-21
+ *         Time: 下午8:08
+ */
+public class InfoQMiniBookProcessor implements PageProcessor {
+
+    private Site site;
+
+    @Override
+    public void process(Page page) {
+        page.addTargetRequests(page.getHtml().links().regex("http://www\\.infoq\\.com/cn/minibooks/.*").all());
+        List<String> all = page.getHtml().links().regex(".*\\.pdf").all();
+        if (CollectionUtils.isNotEmpty(all)) {
+            page.putField("pdf", all);
+        } else {
+            page.getResultItems().setSkip(true);
+        }
+    }
+
+    @Override
+    public Site getSite() {
+        if (site == null) {
+            site = Site.me().setDomain("www.infoq.com").addStartUrl("http://www.infoq.com/cn/minibooks").addCookie("RegisteredUserCookie", "sDDDc8dIAgZSq67uJSXhtpQaHEi1XDOH").
+                    setUserAgent("Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.65 Safari/537.31");
+        }
+        return site;
+    }
+
+    public static void main(String[] args) {
+        Spider.create(new InfoQMiniBookProcessor())
+                .scheduler(new RedisScheduler("localhost"))
+                .pipeline(new FilePipeline("/data/temp/webmagic/"))
+                .thread(5)
+                .run();
+    }
+}