项目要求
根据电商日志文件，分析：
1 . 统计页面浏览量（每行记录就是一次浏览）
2 . 统计各个省份的浏览量 （需要解析IP）
3 . 日志的ETL操作（ETL：数据从来源端经过抽取（Extract）、转换（Transform）、加载（Load）至目的端的过程）
为什么要ETL：没有必要解析出所有数据，只需要解析出有价值的字段即可。本项目中需要解析出：ip、url、pageId（topicId对应的页面Id）、country、province、city
提供一个数据集和四个工具类：
rackinfo_20130721.data
点击查看数据集示例
20939177966http://www.yihaodian.com/1/?type=3&tracker_u=107813492603YU7317CWPWJPCCKSJD83RZ35W6F1DGHT4P93PPGDPBNYMTMMVQQSX13BVW4A6Z61BCFK10781349260\N115.28.44.205,unionKey:107813492602013-07-21 01:18:59\N1\Nnull-20Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Sicent; WoShiHoney.B; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; Microsoft Windows Media Center PC 6.0)Win32北京市2北京市\N\N\N\N2013-07-21
20966958616http://www.1mall.com/item/11033978_4http://www.1mall.com/item/11033980_4?ref=1_1_51_search.keyword_13EUBCC9CG8G7G3Z331PWEV3UNWD7QZA1F3Q2Q1[{1=[{9784616=38251:1190}]}]PPH24C5RHH3GE4RUY1UKQW84PVYBXZFT7439964\N101.18.106.107msessionid:CP23DVRKZGQ67MWQQGNHN5USRK2R9W8V,unionKey:74399642013-07-21 15:11:16\Nhttp://www.2345.com/?kskypw59784615\N4-1Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHTMLWin32河北省446\N\N\N\N2013-07-21
20966773971http://search.yihaodian.com/s2/c0-0/k%25E9%259B%25AA%25E7%25BA%25BA%2520t%25E6%2581%25A4/1/http://www.yihaodian.com/4/?tracker_u=7439964&type=13EUBCC9CG8G7G3Z331PWEV3UNWD7QZA1F3Q2QPPH24C5RHH3GE4RUY1UKQW84PVYBXZFT7439964\N101.18.106.107msessionid:WUEYCTYUHP7CUP4UD7Y2VHNZABPCYJ18,unionKey:74399642013-07-21 15:10:02\Nhttp://www.2345.com/?kskypw3\N4-1Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.1 (KHTMLWin32雪纺 t恤13661CatMenu_Keywords_100000003_18258河北省4null3\N\N\N\N2013-07-21
日志字段说明
技术架构：
页面浏览量统计
1.页面编号的获取
统计页面的访问量：把符合规则的pageId获取到，然后进行统计即可。
- ContentUtils
package com.imooc.bigdata.hadoop.mr.project.utils;
import org.apache.commons.lang.StringUtils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ContentUtils {
public static String getPageId(String url){
String pageId = "";
if (StringUtils.isBlank(url)){
return pageId;
}
//正则表达式
Pattern pattern = Pattern.compile("topicId=[0-9]+");
Matcher matcher = pattern.matcher(url);
if (matcher.find()){
pageId = matcher.group().split("topicId=")[1];
}
return pageId;
}
}
- LogParseTest
package com.imooc.bigdata.hadoop.mr.project.utils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.util.Map;
public class LogParseTest {
LogParser logParser;
@Before
public void setUp(){
logParser = new LogParser();
}
@After
public void tearDown(){
logParser = null;
}
@Test
public void test01(){
Map<String, String> map = logParser.parse("20946835322\u0001http://www.yihaodian.com/1/?tracker_u=2225501&type=3\u0001http://www.baidu.com/s?wd=1%E5%8F%B7%E5%BA%97&rsv_bp=0&ch=&tn=baidu&bar=&rsv_spt=3&ie=utf-8&rsv_sug3=5&rsv_sug=0&rsv_sug1=4&rsv_sug4=313&inputT=4235\u00011号店\u00011\u0001SKAPHD3JZYH9EE9ACB1NGA9VDQHNJMX1NY9T\u0001\u0001\u0001\u0001\u0001PPG4SWG71358HGRJGQHQQBXY9GF96CVU\u00012225501\u0001\\N\u0001124.79.172.232\u0001\u0001msessionid:YR9H5YU7RZ8Y94EBJNZ2P5W8DT37Q9JH,unionKey:2225501\u0001\u00012013-07-21 09:30:01\u0001\\N\u0001http://www.baidu.com/s?wd=1%E5%8F%B7%E5%BA%97&rsv_bp=0&ch=&tn=baidu&bar=&rsv_spt=3&ie=utf-8&rsv_sug3=5&rsv_sug=0&rsv_sug1=4&rsv_sug4=313&inputT=4235\u00011\u0001\u0001\\N\u0001null\u0001-10\u0001\u0001\u0001\u0001\u0001Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; MATP; Media Center PC 6.0; .NET4.0C; InfoPath.2; .NET4.0E)\u0001Win32\u0001\u0001\u0001\u0001\u0001\u0001上海市\u00011\u0001\u00012013-07-21 09:30:01\u0001上海市\u0001\u000166\u0001\u0001\u0001\u0001\u0001\\N\u0001\\N\u0001\\N\u0001\\N\u00012013-07-21\n");
for(Map.Entry<String,String> entry : map.entrySet()) {
System.out.println(entry.getKey() + " : " + entry.getValue());
}
}
@Test
public void test02(){
String pageId = ContentUtils.getPageId("http://www.yihaodian.com/cms/view.do?topicId=19004");
System.out.println(pageId);
}
}
2.功能实现
点击查看代码
package com.imooc.bigdata.hadoop.mr.project.mr;
import com.imooc.bigdata.hadoop.mr.project.utils.GetPageId;
import com.imooc.bigdata.hadoop.mr.project.utils.LogParser;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import java.io.IOException;
import java.util.Map;
public class PageStatApp {
// Driver端的代码：八股文
public static void main(String[] args) throws Exception {
Configuration configuration = new Configuration();
// 如果输出目录已经存在，则先删除
FileSystem fileSystem = FileSystem.get(configuration);
Path outputPath = new Path("output/v1/pagestat");
if (fileSystem.exists(outputPath)) {
fileSystem.delete(outputPath, true);
}
Job job = Job.getInstance(configuration);
job.setJarByClass(PageStatApp.class);
job.setMapperClass(MyMapper.class);
job.setReducerClass(MyReducer.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(LongWritable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(LongWritable.class);
FileInputFormat.setInputPaths(job, new Path("/Users/rocky/data/trackinfo_20130721.data"));
FileOutputFormat.setOutputPath(job, new Path("output/v1/pagestat"));
job.waitForCompletion(true);
}
static class MyMapper extends Mapper<LongWritable, Text, Text, LongWritable> {
private LogParser parser;
private LongWritable ONE = new LongWritable(1);
@Override
protected void setup(Context context) throws IOException, InterruptedException {
parser = new LogParser();
}
@Override
protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String log = value.toString();
Map<String, String> logInfo = parser.parse(log);
String pageId = GetPageId.getPageId(logInfo.get("url"));
context.write(new Text(pageId), ONE);
}
}
static class MyReducer extends Reducer<Text, LongWritable, Text, LongWritable> {
@Override
protected void reduce(Text key, Iterable<LongWritable> values, Context context) throws IOException, InterruptedException {
long count = 0;
for (LongWritable access : values) {
count++;
}
context.write(key, new LongWritable(count));
}
}
}