api without implementation for #28: add specific url crawl

webmagic-extension/src/main/java/us/codecraft/webmagic/example/BaiduBaike.java

@@ -0,0 +1,28 @@
+package us.codecraft.webmagic.example;
+
+import us.codecraft.webmagic.model.OOSpider;
+import us.codecraft.webmagic.model.annotation.ExtractBy;
+import us.codecraft.webmagic.model.annotation.UrlTemplate;
+import us.codecraft.webmagic.model.direct.Param;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author code4crafter@gmail.com
+ */
+@UrlTemplate("http://baike.baidu.com/search/word?word=${word}&enc=utf8")
+public class BaiduBaike {
+
+    private String word;
+
+    @ExtractBy("//div[@id='lemmaContent-0']//div[@class='para']/allText()")
+    private String description;
+
+    public static void main(String[] args) {
+        List<Param> words = new ArrayList<Param>();
+        words.add(new Param().put("word","红烧肉"));
+        OOSpider.direct(words, BaiduBaike.class).thread(10).run();
+    }
+
+}

webmagic-extension/src/main/java/us/codecraft/webmagic/model/OOSpider.java

@@ -2,8 +2,11 @@ package us.codecraft.webmagic.model;
 
 import us.codecraft.webmagic.Site;
 import us.codecraft.webmagic.Spider;
+import us.codecraft.webmagic.model.direct.Param;
 import us.codecraft.webmagic.processor.PageProcessor;
 
+import java.util.Collection;
+
 /**
  * The spider for page model extractor.<br>
  * In webmagic, we call a POJO containing extract result as "page model". <br>
@@ -22,13 +25,14 @@ import us.codecraft.webmagic.processor.PageProcessor;
  *      {@literal @}ExtractBy(value = "//div[@class='BlogTags']/a/text()", multi = true)
  *      private List<String> tags;
  * }
- </pre>
+ * </pre>
  * And start the spider by:
  * <pre>
  *   OOSpider.create(Site.me().addStartUrl("http://my.oschina.net/flashsword/blog")
  *        ,new JsonFilePageModelPipeline(), OschinaBlog.class).run();
  * }
- </pre>
+ * </pre>
+ *
  * @author code4crafter@gmail.com <br>
  * @since 0.2.0
  */
@@ -49,6 +53,7 @@ public class OOSpider extends Spider {
 
     /**
      * create a spider
+     *
      * @param site
      * @param pageModelPipeline
      * @param pageModels
@@ -72,6 +77,22 @@ public class OOSpider extends Spider {
         return new OOSpider(site, pageModelPipeline, pageModels);
     }
 
+    public static OOSpider direct(Site site, PageModelPipeline pageModelPipeline, Class... pageModels) {
+        return new OOSpider(site, pageModelPipeline, pageModels);
+    }
+
+    public static OOSpider direct(PageModelPipeline pageModelPipeline, Class... pageModels) {
+        return new OOSpider(null, pageModelPipeline, pageModels);
+    }
+
+    public static OOSpider direct(Class... pageModels) {
+        return new OOSpider(null, null, pageModels);
+    }
+
+    public static OOSpider direct(Collection<Param> params,Class... pageModels) {
+        return new OOSpider(null, null, pageModels);
+    }
+
     public OOSpider addPageModel(PageModelPipeline pageModelPipeline, Class... pageModels) {
         for (Class pageModel : pageModels) {
             modelPageProcessor.addPageModel(pageModel);

webmagic-extension/src/main/java/us/codecraft/webmagic/model/annotation/UrlTemplate.java

@@ -0,0 +1,37 @@
+package us.codecraft.webmagic.model.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+/**
+ * Define the url patterns for class. <br>
+ * All urls matching the pattern will be crawled and extracted for new objects. <br>
+ *
+ * @author code4crafter@gmail.com <br>
+ * @since 0.3.3
+ */
+@Retention(java.lang.annotation.RetentionPolicy.RUNTIME)
+@Target({ElementType.TYPE})
+public @interface UrlTemplate {
+
+    /**
+     * The url patterns for class.<br>
+     * Use regex expression with some changes: <br>
+     *      "." stand for literal character "." instead of "any character". <br>
+     *      "*" stand for any legal character for url in 0-n length ([^"'#]*) instead of "any length". <br>
+     *
+     * @return the url patterns for class
+     */
+    String value();
+
+    /**
+     * Define the region for url extracting. <br>
+     * Only support XPath.<br>
+     * When sourceRegion is set, the urls will be extracted only from the region instead of entire content. <br>
+     *
+     * @return the region for url extracting
+     */
+    String encoding() default "utf8";
+
+}

webmagic-extension/src/main/java/us/codecraft/webmagic/model/direct/Param.java

@@ -0,0 +1,15 @@
+package us.codecraft.webmagic.model.direct;
+
+import java.util.LinkedHashMap;
+
+/**
+ * @author code4crafter@gmail.com
+ */
+public class Param extends LinkedHashMap<String,Object>{
+
+    @Override
+    public Param put(String key, Object value) {
+        super.put(key, value);
+        return this;
+    }
+}

webmagic-samples/src/main/java/us/codecraft/webmagic/model/samples/Kr36NewsModel.java

@@ -1,12 +1,12 @@
 package us.codecraft.webmagic.model.samples;
 
 import us.codecraft.webmagic.Site;
-import us.codecraft.webmagic.model.ConsolePageModelPipeline;
 import us.codecraft.webmagic.model.OOSpider;
 import us.codecraft.webmagic.model.annotation.ExtractBy;
 import us.codecraft.webmagic.model.annotation.ExtractByUrl;
 import us.codecraft.webmagic.model.annotation.HelpUrl;
 import us.codecraft.webmagic.model.annotation.TargetUrl;
+import us.codecraft.webmagic.pipeline.JsonFilePageModelPipeline;
 
 /**
  * @author code4crafter@gmail.com <br>
@@ -18,14 +18,26 @@ public class Kr36NewsModel {
     @ExtractBy("//h1[@class='entry-title sep10']")
     private String title;
 
-    @ExtractBy("//div[@class='mainContent sep-10']")
+    @ExtractBy("//div[@class='mainContent sep-10']/tidyText()")
     private String content;
 
     @ExtractByUrl
     private String url;
 
     public static void main(String[] args) {
-        OOSpider.create(Site.me().addStartUrl("http://www.36kr.com/"), new ConsolePageModelPipeline(),
+        OOSpider.create(Site.me().addStartUrl("http://www.36kr.com/").setSleepTime(0),new JsonFilePageModelPipeline(),
-                Kr36NewsModel.class).run();
+                Kr36NewsModel.class).thread(20).run();
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public String getUrl() {
+        return url;
     }
 }