如何利用Java实现仓库管理系统的大数据分析和商

// 采集数据并存储到HDFS 本文来自zvvq

Configuration conf = new Configuration();

Job job = Job.getInstance(conf, "Data Collection");

zvvq.cn

job.setJarByClass(DataCollection.class); 内容来自samhan

job.setMapperClass(DataCollectionMapper.class); 本文来自zvvq

job.setOutputKeyClass(NullWritable.class); copyright zvvq

job.setOutputValueClass(Text.class);

zvvq.cn

FileInputFormat.addInputPath(job, new Path("input/data.txt"));

FileOutputFormat.setOutputPath(job, new Path("output/raw-data")); zvvq好，好zvvq

job.waitForCompletion(true); 内容来自samhan666

// 将数据存储到HBase

内容来自zvvq，别采集哟

Configuration hbaseConf = HBaseConfiguration.create();

zvvq

Connection connection = ConnectionFactory.createConnection(hbaseConf);

Admin admin = connection.getAdmin(); zvvq.cn

TableName tableName = TableName.valueOf("warehouse");

zvvq好，好zvvq

HTableDescriptor tableDescriptor = new HTableDescriptor(tableName); 内容来自samhan666

HColumnDescriptor columnDescriptor = new HColumnDescriptor("data");

tableDescriptor.addFamily(columnDescriptor); zvvq好，好zvvq

admin.createTable(tableDescriptor); copyright zvvq

Table table = connection.getTable(tableName); copyright zvvq

Put put = new Put(Bytes.toBytes("row-1")); zvvq好，好zvvq

put.addColumn(Bytes.toBytes("data"), Bytes.toBytes("column-1"), Bytes.toBytes("value-1"));

table.put(put);

// 加载数据到Spark DataFrame zvvq

SparkSession spark = SparkSession.builder()

.appName("Data Cleaning")

内容来自samhan666

.master("local")

本文来自zvvq

.getOrCreate();

本文来自zvvq

Dataset<Row> dataFrame = spark.read()

copyright zvvq

.format("csv")

内容来自samhan666

.option("header", "true")

.load("output/raw-data/part-00000"); 内容来自samhan

// 数据清洗与预处理 内容来自samhan666

Dataset<Row> cleanedDataFrame = dataFrame.na().drop();

内容来自samhan

// 加载数据到Flink DataSet

ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();

DataSet<Tuple2<String, Double>> dataSet = env.readCsvFile("output/cleaned-data/part-00000") 内容来自zvvq

.ignoreFirstLine() 内容来自samhan

.types(String.class, Double.class); zvvq.cn

// 数据分析与挖掘 本文来自zvvq

DataSet<Tuple2<String, Double>> averageByCategory = dataSet.groupBy(0) 内容来自zvvq，别采集哟

.reduceGroup(new GroupReduceFunction<Tuple2<String, Double>, Tuple2<String, Double>>() { zvvq好，好zvvq

@Override

public void reduce(Iterable<Tuple2<String, Double>> values, copyright zvvq

Collector<Tuple2<String, Double>> out) throws Exception {

zvvq

String category = null;

zvvq好，好zvvq

double sum = 0;

int count = 0;

zvvq好，好zvvq

for (Tuple2<String, Double> value : values) {

内容来自samhan666

category = value.f0; 内容来自samhan666

sum += value.f1;

本文来自zvvq

count++; zvvq.cn

}

out.collect(new Tuple2<>(category, sum / count));

内容来自samhan

} zvvq

});

// 加载报表模板

zvvq

InputStream input = new FileInputStream(new File("resources/template.jrxml")); 内容来自samhan666

JasperReport jasperReport = JasperCompileManager.compileReport(input);

内容来自samhan

// 生成报表 本文来自zvvq

JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, new JREmptyDataSource()); 内容来自samhan666

JasperExportManager.exportReportToPdfFile(jasperPrint, "output/report.pdf"); 本文来自zvvq

// 发送邮件

Properties props = new Properties();

内容来自zvvq，别采集哟

props.put("mail.smtp.auth", "true"); 内容来自zvvq

props.put("mail.smtp.starttls.enable", "true");

props.put("mail.smtp.host", "smtp.gmail.com"); 内容来自samhan

props.put("mail.smtp.port", "587");

内容来自zvvq

Session session = Session.getInstance(props, 内容来自zvvq

new javax.mail.Authenticator() {

protected PasswordAuthentication getPasswordAuthentication() {

copyright zvvq

return new PasswordAuthentication("your_email", "your_password");

} 内容来自zvvq，别采集哟

}); copyright zvvq

Message message = new MimeMessage(session); zvvq好，好zvvq

message.setFrom(new InternetAddress("from@example.com"));

zvvq.cn

message.setRecipients(Message.RecipientType.TO, 内容来自samhan666

InternetAddress.parse("to@example.com"));

message.setSubject("Report");

message.setText("Please find the attached report."); 本文来自zvvq

MimeBodyPart messageBodyPart = new MimeBodyPart();

Multipart multipart = new MimeMultipart();

messageBodyPart = new MimeBodyPart(); zvvq.cn

String file = "output/report.pdf";

String fileName = "report.pdf"; zvvq好，好zvvq

DataSource source = new FileDataSource(file); 内容来自zvvq

messageBodyPart.setDataHandler(new DataHandler(source)); 内容来自zvvq

messageBodyPart.setFileName(fileName);

本文来自zvvq

multipart.addBodyPart(messageBodyPart); 内容来自samhan

message.setContent(multipart);

Transport.send(message); 内容来自samhan666