package mrTest;import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
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.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;public class zidingyishujuleixing {public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {// TODO Auto-generated method stubJob job = new Job(new Configuration(),"自定义数据类型");job.setJarByClass(zidingyishujuleixing.class);//一：文件输入路径FileInputFormat.addInputPath(job, new Path(args[0]));//二：指定自定义Map类job.setMapperClass(Map.class);job.setMapOutputKeyClass(Text.class);job.setMapOutputValueClass(WlanString.class);//三：分区，指定reduce个数job.setNumReduceTasks(1);//四：TODO 排序  分组//五：规约处理//六：指定自定义的reduce类job.setReducerClass(Reduce.class);job.setOutputKeyClass(Text.class);job.setOutputValueClass(WlanString.class);//七：指定文件输出位置FileOutputFormat.setOutputPath(job, new Path(args[1]));//八：提交运行System.exit(job.waitForCompletion(true)? 0 : 1);}public static class Map extends Mapper<Object, Text, Text, WlanString>{public void map(Object key, Text value, Context context) throws IOException, InterruptedException{String[] split = value.toString().split("\t");String keyNum = split[1];WlanString ws = new WlanString(split[6],split[7],split[8],split[9]);System.out.println(split[6] + "| " + split[7] + "|" + split[8] + "|" + split[9]);context.write(new Text(keyNum), ws);}}public static class Reduce extends Reducer<Text, WlanString, Text, WlanString>{public void reduce(Text key, Iterable<WlanString> values, Context context) throws IOException, InterruptedException{long upData = 0;long downData = 0;long upFlow = 0;long downFlow = 0;for (WlanString w : values) {upData += w.upData;downData += w.downData;upFlow += w.upFlow;downFlow += w.downFlow;}WlanString newWs = new WlanString(String.valueOf(upData),String.valueOf(downData),String.valueOf(upFlow),String.valueOf(downFlow)); context.write(key, newWs);}}public static class WlanString implements Writable{long upData;long downData;long upFlow;long downFlow;public WlanString(){   }public WlanString(String  upData1, String downData1, String upFlow1, String downFlow1) {// TODO Auto-generated constructor stubthis.upData =  Long.parseLong(upData1);this.upData = Long.parseLong(downData1);this.upFlow =  Long.parseLong(upFlow1);this.downFlow = Long.parseLong(downFlow1);}@Overridepublic void readFields(DataInput in) throws IOException {// TODO Auto-generated method stubthis.upData = in.readLong();this.downData = in.readLong();this.upFlow = in.readLong();this.downFlow = in.readLong();System.out.println("upData:" + upData + "downData:" + downData + "upFlow:" + upFlow + "downFlow:" + downFlow);}@Overridepublic void write(DataOutput out) throws IOException {// TODO Auto-generated method stubout.writeLong(upData);out.writeLong(downData);out.writeLong(upFlow);out.writeLong(upFlow);System.out.println("upData:" + upData + "downData:" + downData + "upFlow:" + upFlow + "downFlow:" + downFlow);}  @Override  public String toString() {  return upData + "\t" + downData + "\t" + upFlow +"\t" + downFlow;  }  }
}