需求：對業務資料根據上行流量和上行總流量做一個排序處理，上行流量升序，上行流量相同的上行總流量升序

資料說明：7，8，9，10位置的資料型別分別為upFlow，dowFlow，upCountFlow，downCountFlow

1363157985066 13726230503 00-FD-07-A4-72-B8:CMCC 120.196.100.82 i02.c.aliimg.com 遊戲娛樂 24 27 2481 24681 200
1363157995052 13826544101 5C-0E-8B-C7-F1-E0:CMCC 120.197.40.4 jd.com 京東購物 4 0 264 0 200
1363157991076 13926435656 20-10-7A-28-CC-0A:CMCC 120.196.100.99 taobao.com 淘寶購物 2 4 132 1512 200
1363154400022 13926251106 5C-0E-8B-8B-B1-50:CMCC 120.197.40.4 cnblogs.com 技術門戶 4 0 240 0 200
1363157993044 18211575961 94-71-AC-CD-E6-18:CMCC-EASY 120.196.100.99 iface.qiyi.com 視訊網站 15 12 1527 2106 200
1363157995074 84138413 5C-0E-8B-8C-E8-20:7DaysInn 120.197.40.4 122.72.52.12 未知 20 16 4116 1432 200
1363157993055 13560439658 C4-17-FE-BA-DE-D9:CMCC 120.196.100.99 sougou.com 綜合門戶 18 15 1116 954 200
1363157992093 13560439658 C4-17-FE-BA-DE-D9:CMCC 120.196.100.99 zhilian.com 招聘門戶 15 9 918 4938 200
1363157995033 15920133257 5C-0E-8B-C7-BA-20:CMCC 120.197.40.4 sug.so.360.cn 資訊保安 20 20 3156 2936 200
1363157983019 13719199419 68-A1-B7-03-07-B1:CMCC-EASY 120.196.100.82 baidu.com 綜合搜尋 4 0 240 0 200
1363157984041 13660577991 5C-0E-8B-92-5C-20:CMCC-EASY 120.197.40.4 s19.cnzz.com 站點統計 24 9 6960 690 200
1363157973098 15013685858 5C-0E-8B-C7-F7-90:CMCC 120.197.40.4 rank.ie.sogou.com 搜尋引擎 28 27 3659 3538 200
1363157986029 15989002119 E8-99-C4-4E-93-E0:CMCC-EASY 120.196.100.99 www.umeng.com 站點統計 3 3 1938 180 200
1363157986041 13480253104 5C-0E-8B-C7-FC-80:CMCC-EASY 120.197.40.4 csdn.net 技術門戶 3 3 180 180 200
1363157984040 13602846565 5C-0E-8B-8B-B6-00:CMCC 120.197.40.4 2052.flash2-http.qq.com 綜合門戶 15 12 1938 2910 200
1363157995093 13922314466 00-FD-07-A2-EC-BA:CMCC 120.196.100.82 img.qfc.cn 圖片大全 12 12 3008 3720 200
1363157982040 13502468823 5C-0A-5B-6A-0B-D4:CMCC-EASY 120.196.100.99 y0.ifengimg.com 綜合門戶 57 102 7335 110349 200
1363157986072 18320173382 84-25-DB-4F-10-1A:CMCC-EASY 120.196.100.99 input.shouji.sogou.com 搜尋引擎 21 18 9531 2412 200
1363157990043 13925057413 00-1F-64-E1-E6-9A:CMCC 120.196.100.55 t3.baidu.com 搜尋引擎 69 63 11058 48243 200
1363157988072 13760778710 00-FD-07-A4-7B-08:CMCC 120.196.100.82 http://youku.com/ 視訊網站 2 2 120 120 200
1363157985079 13823070001 20-7C-8F-70-68-1F:CMCC 120.196.100.99 img.qfc.cn 圖片瀏覽 6 3 360 180 200
1363157985069 13600217502 00-1F-64-E2-E8-B1:CMCC 120.196.100.55 www.baidu.com 綜合門戶 18 138 1080 186852 200

1、編寫bean類，繼承WritableComparable，用於比較邏輯的實現

package com.xiaofei.mr.sort;

import org.apache.hadoop.io.WritableComparable;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

/**
 * @author yangquan
 * @date 2021.07.13
 */
public class FlowBeanCompare implements WritableComparable<FlowBeanCompare> {
 


    private Integer upFlow;
    private Integer downFlow;
    private Integer upCountFlow;
    private Integer downCountFlow;

    public FlowBeanCompare() {
    }

    public FlowBeanCompare(Integer upFlow, Integer downFlow, Integer upCountFlow, Integer downCountFlow) {
        this.upFlow = upFlow;
        this.downFlow = downFlow;
 

        this.upCountFlow = upCountFlow;
        this.downCountFlow = downCountFlow;
    }

    @Override
    public int compareTo(FlowBeanCompare o) {
        int result = this.upFlow.compareTo(o.upFlow);
        if(result==0){
            return this.downFlow.compareTo(o.downFlow);
        }else {
            return result;
        }

    }

    @Override
    public void write(DataOutput out) throws IOException {
        out.writeInt(upFlow);
        out.writeInt(downFlow);
        out.writeInt(upCountFlow);
        out.writeInt(downCountFlow);
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        this.upFlow = in.readInt();
        this.downFlow=in.readInt();
        this.upCountFlow=in.readInt();
        this.downCountFlow=in.readInt();

    }

    public Integer getUpFlow() {
        return upFlow;
    }

    public void setUpFlow(Integer upFlow) {
        this.upFlow = upFlow;
    }

    public Integer getDownFlow() {
        return downFlow;
    }

    public void setDownFlow(Integer downFlow) {
        this.downFlow = downFlow;
    }

    public Integer getUpCountFlow() {
        return upCountFlow;
    }

    public void setUpCountFlow(Integer upCountFlow) {
        this.upCountFlow = upCountFlow;
    }

    public Integer getDownCountFlow() {
        return downCountFlow;
    }

    public void setDownCountFlow(Integer downCountFlow) {
        this.downCountFlow = downCountFlow;
    }

    @Override
    public String toString() {
        return "FlowBean{" +
                "upFlow=" + upFlow +
                ", downFlow=" + downFlow +
                ", upCountFlow=" + upCountFlow +
                ", downCountFlow=" + downCountFlow +
                '}';
    }

}
2、編寫程式執行的主類

package com.xiaofei.mr.sort;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

import java.io.IOException;

/**
 * @author yangquan
 * @date 2021.07.13
 */
public class FlowBeanSort extends Configured implements Tool {

    @Override
    public int run(String[] args) throws Exception {
        Job job=Job.getInstance(super.getConf(),FlowBeanSort.class.getSimpleName());
        job.setJarByClass(FlowBeanSort.class);

        job.setInputFormatClass(TextInputFormat.class);
        Path inpath = new Path("D:\\資料資料\\hadoop資料資料\\SortFlow\\intput");
        TextInputFormat.addInputPath(job,inpath);

        job.setMapperClass(FlowMapper.class);
        job.setMapOutputKeyClass(FlowBeanCompare.class);
        job.setMapOutputValueClass(NullWritable.class);

        job.setOutputFormatClass(TextOutputFormat.class);

        Path outpath=new Path("D:\\資料資料\\hadoop資料資料\\SortFlow\\out");
        FileSystem fileSystem = FileSystem.get(super.getConf());
        if(fileSystem.exists(outpath)){
            fileSystem.delete(outpath,true);
        }
        TextOutputFormat.setOutputPath(job,outpath);
        return (job.waitForCompletion(true)?0:1);
    }

    public static void main(String[] args) throws Exception {
        int run = ToolRunner.run(new Configuration(), new FlowBeanSort(), args);
        System.exit(run);
    }

    public static class FlowMapper extends Mapper<LongWritable, Text,FlowBeanCompare, NullWritable>{
　　　　
        private FlowBeanCompare flowBeanCompare;

        @Override
        protected void setup(Context context) throws IOException, InterruptedException {
            flowBeanCompare=new FlowBeanCompare();
        }

        @Override
        protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
            String[] splits = value.toString().split("\t");
            int upLow =Integer.parseInt( splits[6]);
            int downFlow = Integer.parseInt(splits[7]);
            int upCountFlow = Integer.parseInt(splits[8]);
            int downCountFlow = Integer.parseInt(splits[9]);

            flowBeanCompare.setUpFlow(upLow);
            flowBeanCompare.setDownFlow(downFlow);
            flowBeanCompare.setUpCountFlow(upCountFlow);
            flowBeanCompare.setDownCountFlow(downCountFlow);

            context.write(flowBeanCompare,NullWritable.get());
　　　　　　　//說明：mapper中必須使用bean物件這個才會進行比對，如果使用Text型別的輸出時無法進行比對的這點要注意

            /*String line= splits[6]+","+splits[7]+","+splits[8]+","+splits[9];
            context.write(new Text(line),NullWritable.get());*/

        }
    }

}