计算机课程毕设：基于spark的电商商品智能分析系统，采用流式计算电商商品关注度，实现商品智能推荐及关联分析.zip

package com.twq; import java.io.Serializable; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.util.Iterator; import java.util.List; import org.apache.log4j.Logger; import org.apache.log4j.Level; import org.apache.spark.HashPartitioner; import org.apache.spark.SparkConf; import org.apache.spark.api.java.JavaPairRDD; import org.apache.spark.api.java.function.Function; import org.apache.spark.api.java.function.Function2; import org.apache.spark.api.java.function.PairFunction; import org.apache.spark.api.java.function.VoidFunction; import org.apache.spark.streaming.Duration; import org.apache.spark.streaming.api.java.JavaDStream; import org.apache.spark.streaming.api.java.JavaPairDStream; import org.apache.spark.streaming.api.java.JavaReceiverInputDStream; import org.apache.spark.streaming.api.java.JavaStreamingContext; import org.apache.spark.api.java.Optional; import scala.Tuple2; //import com.google.common.base.Optional; public class StreamingGoods implements Serializable{ //define file for saving pre rdd data public static String checkpointDir="checkDir"; public static boolean flag=false; public static void main(String[] args) throws InterruptedException { //setLogger Logger.getLogger("org").setLevel(Level.OFF); Logger.getLogger("com").setLevel(Level.OFF); System.setProperty("spark.ui.showConsoleProgress","false"); Logger.getRootLogger().setLevel(Level.OFF); //setmaster>=2 SparkConf sparkconf=new SparkConf().setAppName("StreamingGoods").setMaster("local[2]"); //Spark Streaming需要指定处理数据的时间间隔 JavaStreamingContext jsc=new JavaStreamingContext(sparkconf,new Duration(5000)); //恢复点 jsc.checkpoint(checkpointDir); JavaReceiverInputDStream<String> jds=jsc.socketTextStream("127.0.0.1", 9999); //获取数据 JavaDStream<String> mess=jds.map(new Function<String,String>(){ private static final long serialVersionUID=1L; public String call(String arg0) throws Exception{ if(arg0.isEmpty()){ System.out.println("没有数据流进来。。。。。。"); } return arg0; } }); //mess.print(30); //打印接收到的数据 //分割数据以及计算关注度 JavaPairDStream<String,Double> splitmess=jds.mapToPair(new PairFunction<String,String,Double>(){ private static final long serialVersionUID=1L; public Tuple2<String,Double> call(String line) throws Exception{ String[] lineSplit=line.toString().split("::"); if(lineSplit.length==0){ flag=true; } //权重计算：浏览次数0.15 停留时间0.15 收藏0.2 购买件数0.2 评分0.3 合为1 Double followValue=Double.parseDouble(lineSplit[2])*0.15+Double.parseDouble(lineSplit[3])*0.15+ Double.parseDouble(lineSplit[4])*0.2+Double.parseDouble(lineSplit[5])*0.2+ Double.parseDouble(lineSplit[4])*0.3; return new Tuple2<String,Double>(lineSplit[1],followValue); } }); //更新关注度 JavaPairDStream<String,Double> updateFollowValue=splitmess.updateStateByKey( new Function2<List<Double>,Optional<Double>,Optional<Double>>(){ public Optional<Double> call(List<Double> newValues,Optional<Double> startValue) throws Exception{ Double updateValue=startValue.or(0.0); for(Double values : newValues) { updateValue+=values; } return Optional.of(updateValue); } }); //将updateFollowValue写进数据库 updateFollowValue.foreachRDD(new VoidFunction<JavaPairRDD<String, Double>>() { @Override public void call(JavaPairRDD<String, Double> stringDoubleJavaPairRDD) throws Exception { if(stringDoubleJavaPairRDD.isEmpty()||flag){ System.out.println("没有数据流入！！！"); }else{ JavaPairRDD<String,Double> printdata=stringDoubleJavaPairRDD.mapToPair(new PairFunction<Tuple2<String, Double>, String, Double>() { @Override public Tuple2<String, Double> call(Tuple2<String, Double> stringDoubleTuple2) throws Exception { //System.out.println(stringDoubleTuple2._1+" "+stringDoubleTuple2._2); return new Tuple2<String, Double>(stringDoubleTuple2._1,stringDoubleTuple2._2); } }); printdata.foreachPartition(new VoidFunction<Iterator<Tuple2<String, Double>>>() { @Override public void call(Iterator<Tuple2<String, Double>> tuple2Iterator) throws Exception { Connection connection=null; try{ connection=ConnectionPool.getConnection(); String sql="insert into followData(itemID,followValue) values(?,?) on duplicate key update followValue=?"; PreparedStatement pst=connection.prepareStatement(sql); System.out.println(); while(tuple2Iterator.hasNext()){ Tuple2<String,Double> t2=tuple2Iterator.next(); //打印结果 System.out.println(t2._1+" "+t2._2); pst.setInt(1,Integer.parseInt(t2._1)); pst.setDouble(2,t2._2); pst.setDouble(3,t2._2); pst.executeUpdate(); } pst.close(); }finally { ConnectionPool.returnConnection(connection); } } }); /*printdata.foreach(new VoidFunction<Tuple2<String, Double>>() { @Override public void call(Tuple2<String, Double> stringDoubleTuple2) throws Exception { System.out.println(stringDoubleTuple2._1+" "+stringDoubleTuple2._2); } });*/ } } }); //滑动窗口 JavaPairDStream<String,Double> windowFollowValue=splitmess.window(new Duration(10000),new Duration(5000)); windowFollowValue.foreachRDD(new VoidFunction<JavaPairRDD<String, Double>>() { @Override public void call(JavaPairRDD<String, Double> stringDoubleJavaPairRDD) throws Exception { if(stringDoubleJavaPairRDD.isEmpty()||flag){ System.out.println("滑动窗口未满"); }else{ JavaPairRDD<String,Double> printdata=stringDoubleJavaPairRDD.mapToPair(new PairFunction<Tuple2<String, Double>, String, Double>() { @Override public Tuple2<String, Double> call(Tuple2<String, Double> stringDoubleTuple2) throws Exception { //System.out.println(stringDoubleTuple2._1+" "+stringDoubleTuple2._2); return new Tuple2<String, Double>(stringDoubleTuple2._1,stringDoubleTuple2._2); } }); printdata.foreachPartition(new VoidFunction<Iterator<Tuple2<String, Double>>>() { @Override public void call(Iterator<Tuple2<String, Double>> tuple2Iterator) throws Exception { Connection connection=null; try{ connection=ConnectionPool.getConnection(); String sql="insert into windowFollowData(itemID,followValue) values(?,?) on duplicate key update followValue=?"; String singeSql="insert into singleFollowValue(windowFollowValue) values(?)"; PreparedStatement pst=connection.prepareStatement(sql); PreparedStatement pst2=connection.prepareStatement(singeSql); System.out.println(); boolean has=false; while(tuple2Iterator.hasNext()){ Tuple2<String,Double> t2=tuple2Iterator.next(); //打印结果 System.out.println(t2._1+" "+t2._2); pst.setInt(1,Integer.parseInt(t2._1)); pst.setDouble(2,t2._2); pst.setDouble(3,t2._2); pst.executeUpdate(); if(Integer.parseInt(t2._1)==1){ pst2.setDouble(1,t2._2); pst2.executeUpdate(); has=true; } } if(has==false){ pst2.setDouble(1,0); pst2.executeUpdate(); } pst.close(); pst2.close(); }finally { ConnectionPool.returnConnection(connection); } } }); /*printdata.foreach(new VoidFunction<Tuple2<String, Double>>() { @Override public void call(Tuple2<String, Double> stringDoubleTuple2) throws Exception { System.out.println(stringDoubleTuple2._1+" "+stringDoubleTuple2._2); } });*/ } } }); /*输出关注度 updateFollowValue.foreachRDD(new