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magic-Dependency
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comments in english

master
yihua.huang 2013-08-17 18:33:05 +08:00
parent e566a53936
commit 59aad6a7f4
17 changed files with 63 additions and 72 deletions
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4
webmagic-extension/src/main/java/us/codecraft/webmagic/PagedModel.java → webmagic-extension/src/main/java/us/codecraft/webmagic/MultiPageModel.java
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@ -8,7 +8,7 @@ import java.util.Collection;
* Date: 13-8-4 <br>
* Time: 下午5:18 <br>
*/
public interface PagedModel {
public interface MultiPageModel {
public String getPageKey();
@ -16,6 +16,6 @@ public interface PagedModel {
public String getPage();
public PagedModel combine(PagedModel pagedModel);
public MultiPageModel combine(MultiPageModel multiPageModel);
}

1
webmagic-extension/src/main/java/us/codecraft/webmagic/downloader/FileCache.java
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@ -17,7 +17,6 @@ import java.io.*;
/**
* Download file and saved to file for cache.<br>
*
*
* @author code4crafter@gmail.com
* @since 0.2.1
*/

8
webmagic-extension/src/main/java/us/codecraft/webmagic/model/annotation/Experimental.java 100644
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@ -0,0 +1,8 @@
package us.codecraft.webmagic.model.annotation;
/**
* @author code4crafter@gmail.com <br>
* Stands for features not stable.
*/
public @interface Experimental {
}

17
webmagic-extension/src/main/java/us/codecraft/webmagic/pipeline/JsonFilePageModelPipeline.java
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@ -14,29 +14,24 @@ import java.io.IOException;
import java.io.PrintWriter;
/**
* JSON格式持久化到文件的接口。<br>
* 如果持久化的文件名是乱码，请再运行的环境变量里加上LANG=zh_CN.UTF-8。<br>
* Store results objects (page models) to files in JSON format。<br>
* Use model.getKey() as file name if the model implements HasKey.<br>
* Otherwise use SHA1 as file name.
*
* @author code4crafter@gmail.com <br>
* Date: 13-4-21
* Time: 下午6:28
* @since 0.2.0
*/
public class JsonFilePageModelPipeline extends FilePersistentBase implements PageModelPipeline {
private Logger logger = Logger.getLogger(getClass());
/**
* 新建一个JsonFilePageModelPipeline，使用默认保存路径"/data/webmagic/"
* new JsonFilePageModelPipeline with default path "/data/webmagic/"
*/
public JsonFilePageModelPipeline() {
setPath("/data/webmagic/");
}
/**
* 新建一个JsonFilePageModelPipeline
*
* @param path 文件保存路径
*/
public JsonFilePageModelPipeline(String path) {
setPath(path);
}
@ -47,7 +42,7 @@ public class JsonFilePageModelPipeline extends FilePersistentBase implements Pag
try {
String filename;
if (o instanceof HasKey) {
filename = path + ((HasKey)o).key() + ".json";
filename = path + ((HasKey) o).key() + ".json";
} else {
filename = path + DigestUtils.md5Hex(ToStringBuilder.reflectionToString(o)) + ".json";
}

12
webmagic-extension/src/main/java/us/codecraft/webmagic/pipeline/JsonFilePipeline.java
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@ -13,28 +13,22 @@ import java.io.IOException;
import java.io.PrintWriter;
/**
* JSON格式持久化到文件的接口。
* Store results to files in JSON format。<br>
*
* @author code4crafter@gmail.com <br>
* Date: 13-4-21
* Time: 下午6:28
* @since 0.2.0
*/
public class JsonFilePipeline extends FilePersistentBase implements Pipeline {
private Logger logger = Logger.getLogger(getClass());
/**
* 新建一个JsonFilePipeline，使用默认保存路径"/data/webmagic/"
* new JsonFilePageModelPipeline with default path "/data/webmagic/"
*/
public JsonFilePipeline() {
setPath("/data/webmagic");
}
/**
* 新建一个JsonFilePipeline
*
* @param path 文件保存路径
*/
public JsonFilePipeline(String path) {
setPath(path);
}

44
webmagic-extension/src/main/java/us/codecraft/webmagic/pipeline/PagedPipeline.java → webmagic-extension/src/main/java/us/codecraft/webmagic/pipeline/MultiPagePipeline.java
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@ -1,26 +1,28 @@
package us.codecraft.webmagic.pipeline;
import us.codecraft.webmagic.PagedModel;
import us.codecraft.webmagic.MultiPageModel;
import us.codecraft.webmagic.ResultItems;
import us.codecraft.webmagic.Task;
import us.codecraft.webmagic.model.annotation.Experimental;
import us.codecraft.webmagic.utils.DoubleKeyMap;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
/**
* 用于实现分页的Pipeline。<br>
* 在使用redis做分布式爬虫时，请不要使用此功能。<br>
* A pipeline combines the result in more than one page together.<br>
* Used for news and articles containing more than one web page. <br>
* MultiPagePipeline will store parts of object and output them when all parts are extracted.<br>
*
* @author code4crafter@gmail.com <br>
* Date: 13-8-4 <br>
* Time: 下午5:15 <br>
* @since 0.2.0
*/
public class PagedPipeline implements Pipeline {
@Experimental
public class MultiPagePipeline implements Pipeline {
private DoubleKeyMap<String, String, Boolean> pageMap = new DoubleKeyMap<String, String, Boolean>(ConcurrentHashMap.class);
private DoubleKeyMap<String, String, PagedModel> objectMap = new DoubleKeyMap<String, String, PagedModel>(ConcurrentHashMap.class);
private DoubleKeyMap<String, String, MultiPageModel> objectMap = new DoubleKeyMap<String, String, MultiPageModel>(ConcurrentHashMap.class);
@Override
public void process(ResultItems resultItems, Task task) {
@ -34,20 +36,20 @@ public class PagedPipeline implements Pipeline {
private void handleObject(Iterator<Map.Entry<String, Object>> iterator) {
Map.Entry<String, Object> objectEntry = iterator.next();
Object o = objectEntry.getValue();
if (o instanceof PagedModel) {
PagedModel pagedModel = (PagedModel) o;
pageMap.put(pagedModel.getPageKey(), pagedModel.getPage(), Boolean.TRUE);
if (pagedModel.getOtherPages() != null) {
for (String otherPage : pagedModel.getOtherPages()) {
Boolean aBoolean = pageMap.get(pagedModel.getPageKey(), otherPage);
if (o instanceof MultiPageModel) {
MultiPageModel multiPageModel = (MultiPageModel) o;
pageMap.put(multiPageModel.getPageKey(), multiPageModel.getPage(), Boolean.TRUE);
if (multiPageModel.getOtherPages() != null) {
for (String otherPage : multiPageModel.getOtherPages()) {
Boolean aBoolean = pageMap.get(multiPageModel.getPageKey(), otherPage);
if (aBoolean == null) {
pageMap.put(pagedModel.getPageKey(), otherPage, Boolean.FALSE);
pageMap.put(multiPageModel.getPageKey(), otherPage, Boolean.FALSE);
}
}
}
//check if all pages are processed
Map<String, Boolean> booleanMap = pageMap.get(pagedModel.getPageKey());
objectMap.put(pagedModel.getPageKey(), pagedModel.getPage(), pagedModel);
Map<String, Boolean> booleanMap = pageMap.get(multiPageModel.getPageKey());
objectMap.put(multiPageModel.getPageKey(), multiPageModel.getPage(), multiPageModel);
if (booleanMap == null) {
return;
}
@ -57,12 +59,12 @@ public class PagedPipeline implements Pipeline {
return;
}
}
List<Map.Entry<String, PagedModel>> entryList = new ArrayList<Map.Entry<String, PagedModel>>();
entryList.addAll(objectMap.get(pagedModel.getPageKey()).entrySet());
List<Map.Entry<String, MultiPageModel>> entryList = new ArrayList<Map.Entry<String, MultiPageModel>>();
entryList.addAll(objectMap.get(multiPageModel.getPageKey()).entrySet());
if (entryList.size() != 0) {
Collections.sort(entryList, new Comparator<Map.Entry<String, PagedModel>>() {
Collections.sort(entryList, new Comparator<Map.Entry<String, MultiPageModel>>() {
@Override
public int compare(Map.Entry<String, PagedModel> o1, Map.Entry<String, PagedModel> o2) {
public int compare(Map.Entry<String, MultiPageModel> o1, Map.Entry<String, MultiPageModel> o2) {
try {
int i1 = Integer.parseInt(o1.getKey());
int i2 = Integer.parseInt(o2.getKey());
@ -72,7 +74,7 @@ public class PagedPipeline implements Pipeline {
}
}
});
PagedModel value = entryList.get(0).getValue();
MultiPageModel value = entryList.get(0).getValue();
for (int i = 1; i < entryList.size(); i++) {
value = value.combine(entryList.get(i).getValue());
}

14
webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/FileCacheQueueScheduler.java
View File

@ -16,10 +16,10 @@ import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* 磁盘文件实现的url管理模块，可以保证在长时间执行的任务中断后，下次启动从中断位置重新开始。<br>
* Store urls and cursor in files so that a Spider can resume the status when shutdown。<br>
*
* @author code4crafter@gmail.com <br>
* Date: 13-4-21
* Time: 下午1:13
* @since 0.2.0
*/
public class FileCacheQueueScheduler implements Scheduler {
@ -46,8 +46,8 @@ public class FileCacheQueueScheduler implements Scheduler {
private Set<String> urls;
public FileCacheQueueScheduler(String filePath) {
if (!filePath.endsWith("/")&&!filePath.endsWith("\\")){
filePath+="/";
if (!filePath.endsWith("/") && !filePath.endsWith("\\")) {
filePath += "/";
}
this.filePath = filePath;
}
@ -95,7 +95,7 @@ public class FileCacheQueueScheduler implements Scheduler {
readCursorFile();
readUrlFile();
} catch (IOException e) {
logger.error("init file error",e);
logger.error("init file error", e);
}
}
@ -122,7 +122,7 @@ public class FileCacheQueueScheduler implements Scheduler {
}
private String getFileName(String filename) {
return filePath + task.getUUID() + filename;
return filePath + task.getUUID() + filename;
}
@Override

5
webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisScheduler.java
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@ -9,11 +9,10 @@ import us.codecraft.webmagic.Request;
import us.codecraft.webmagic.Task;
/**
* 使用redis管理url，构建一个分布式的爬虫。<br>
* Use Redis as url scheduler for distributed crawlers。<br>
*
* @author code4crafter@gmail.com <br>
* Date: 13-7-25 <br>
* Time: 上午7:07 <br>
* @since 0.2.0
*/
public class RedisScheduler implements Scheduler {

3
webmagic-extension/src/main/java/us/codecraft/webmagic/selector/JsonPathSelector.java
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@ -6,9 +6,8 @@ import java.util.ArrayList;
import java.util.List;
/**
* JsonPath
* @author code4crafter@gmail.com <br>
* Date: 13-8-12 <br>
* Time: 下午12:54 <br>
*/
public class JsonPathSelector implements Selector {

1
webmagic-extension/src/main/java/us/codecraft/webmagic/utils/DoubleKeyMap.java
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@ -4,7 +4,6 @@ import java.util.Map;
/**
* @author code4crafter@gmail.com
* Date Dec 14, 2012
*/
public class DoubleKeyMap<K1, K2, V> extends MultiKeyMapBase {
private Map<K1, Map<K2, V>> map;

2
webmagic-extension/src/main/java/us/codecraft/webmagic/utils/MultiKeyMapBase.java
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@ -9,7 +9,7 @@ import java.util.HashMap;
import java.util.Map;
/**
* multikey map, some basic objects *
* multi-key map, some basic objects *
*
* @author yihua.huang
*/

2
webmagic-extension/src/test/java/us/codecraft/webmagic/scheduler/RedisSchedulerTest.java
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@ -9,8 +9,6 @@ import us.codecraft.webmagic.Task;
/**
* @author code4crafter@gmail.com <br>
* Date: 13-7-25 <br>
* Time: 上午7:51 <br>
*/
public class RedisSchedulerTest {

2
webmagic-extension/src/test/java/us/codecraft/webmagic/selector/JsonPathSelectorTest.java
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@ -7,8 +7,6 @@ import java.util.List;
/**
* @author code4crafter@gmai.com <br>
* Date: 13-8-12 <br>
* Time: 下午1:12 <br>
*/
public class JsonPathSelectorTest {

4
webmagic-samples/src/main/java/us/codecraft/webmagic/main/QuickStarter.java
View File

@ -6,7 +6,7 @@ import us.codecraft.webmagic.model.samples.IteyeBlog;
import us.codecraft.webmagic.model.samples.News163;
import us.codecraft.webmagic.model.samples.OschinaBlog;
import us.codecraft.webmagic.pipeline.ConsolePipeline;
import us.codecraft.webmagic.pipeline.PagedPipeline;
import us.codecraft.webmagic.pipeline.MultiPagePipeline;
import java.util.LinkedHashMap;
import java.util.Map;
@ -40,7 +40,7 @@ public class QuickStarter {
key = readKey(key);
System.out.println("The demo started and will last 20 seconds...");
//Start spider
OOSpider.create(Site.me().addStartUrl(urlMap.get(key)), clazzMap.get(key)).pipeline(new PagedPipeline()).pipeline(new ConsolePipeline()).runAsync();
OOSpider.create(Site.me().addStartUrl(urlMap.get(key)), clazzMap.get(key)).pipeline(new MultiPagePipeline()).pipeline(new ConsolePipeline()).runAsync();
try {
Thread.sleep(20000);

12
webmagic-samples/src/main/java/us/codecraft/webmagic/model/samples/News163.java
View File

@ -1,6 +1,6 @@
package us.codecraft.webmagic.model.samples;
import us.codecraft.webmagic.PagedModel;
import us.codecraft.webmagic.MultiPageModel;
import us.codecraft.webmagic.Site;
import us.codecraft.webmagic.model.OOSpider;
import us.codecraft.webmagic.model.annotation.ComboExtract;
@ -8,7 +8,7 @@ import us.codecraft.webmagic.model.annotation.ExtractBy;
import us.codecraft.webmagic.model.annotation.ExtractByUrl;
import us.codecraft.webmagic.model.annotation.TargetUrl;
import us.codecraft.webmagic.pipeline.ConsolePipeline;
import us.codecraft.webmagic.pipeline.PagedPipeline;
import us.codecraft.webmagic.pipeline.MultiPagePipeline;
import us.codecraft.webmagic.scheduler.RedisScheduler;
import java.util.Collection;
@ -20,7 +20,7 @@ import java.util.List;
* Time: 下午8:17 <br>
*/
@TargetUrl("http://news.163.com/\\d+/\\d+/\\d+/\\w+*.html")
public class News163 implements PagedModel {
public class News163 implements MultiPageModel {
@ExtractByUrl("http://news\\.163\\.com/\\d+/\\d+/\\d+/([^_]*).*\\.html")
private String pageKey;
@ -58,10 +58,10 @@ public class News163 implements PagedModel {
}
@Override
public PagedModel combine(PagedModel pagedModel) {
public MultiPageModel combine(MultiPageModel multiPageModel) {
News163 news163 = new News163();
news163.title = this.title;
News163 pagedModel1 = (News163) pagedModel;
News163 pagedModel1 = (News163) multiPageModel;
news163.content = this.content + pagedModel1.content;
return news163;
}
@ -77,7 +77,7 @@ public class News163 implements PagedModel {
public static void main(String[] args) {
OOSpider.create(Site.me().addStartUrl("http://news.163.com/13/0802/05/958I1E330001124J_2.html"), News163.class)
.scheduler(new RedisScheduler("localhost")).clearPipeline().pipeline(new PagedPipeline()).pipeline(new ConsolePipeline()).run();
.scheduler(new RedisScheduler("localhost")).clearPipeline().pipeline(new MultiPagePipeline()).pipeline(new ConsolePipeline()).run();
}
}

2
zh_docs/us/codecraft/webmagic/PagedModel-cmnt.xml
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@ -4,7 +4,7 @@
<date-generated>Sat Aug 17 14:14:45 CST 2013</date-generated>
</meta>
<comment>
<key><![CDATA[us.codecraft.webmagic.PagedModel]]></key>
<key><![CDATA[us.codecraft.webmagic.MultiPageModel]]></key>
<data><![CDATA[ 实现此接口以进行支持爬虫分页抓取。<br>
@author code4crafter@gmail.com <br>
Date: 13-8-4 <br>

2
zh_docs/us/codecraft/webmagic/pipeline/PagedPipeline-cmnt.xml
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@ -4,7 +4,7 @@
<date-generated>Sat Aug 17 14:14:46 CST 2013</date-generated>
</meta>
<comment>
<key><![CDATA[us.codecraft.webmagic.pipeline.PagedPipeline]]></key>
<key><![CDATA[us.codecraft.webmagic.pipeline.MultiPagePipeline]]></key>
<data><![CDATA[ 用于实现分页的Pipeline。<br>
在使用redis做分布式爬虫时，请不要使用此功能。<br>