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 内容来自samhan

Configuration conf = new Configuration(); 内容来自samhan

Job job = Job.getInstance(conf, "Data Collection"); 内容来自zvvq，别采集哟

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

job.setMapperClass(DataCollectionMapper.class);

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job.setOutputKeyClass(NullWritable.class); 内容来自samhan

job.setOutputValueClass(Text.class);

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

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

job.waitForCompletion(true);

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// 将数据存储到HBase

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Configuration hbaseConf = HBaseConfiguration.create();

Connection connection = ConnectionFactory.createConnection(hbaseConf); 本文来自zvvq

Admin admin = connection.getAdmin(); 内容来自samhan

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

HTableDescriptor tableDescriptor = new HTableDescriptor(tableName);

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HColumnDescriptor columnDescriptor = new HColumnDescriptor("data");

tableDescriptor.addFamily(columnDescriptor); 内容来自zvvq

admin.createTable(tableDescriptor); 内容来自samhan

Table table = connection.getTable(tableName); 本文来自zvvq

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

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

table.put(put); zvvq

// 加载数据到Spark DataFrame 内容来自zvvq

SparkSession spark = SparkSession.builder() 内容来自samhan666

.appName("Data Cleaning") 内容来自zvvq，别采集哟

.master("local")

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.getOrCreate();

Dataset<Row> dataFrame = spark.read()

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.format("csv") 内容来自samhan

.option("header", "true") 本文来自zvvq

.load("output/raw-data/part-00000");

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// 数据清洗与预处理

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

// 加载数据到Flink DataSet

ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); 内容来自zvvq，别采集哟

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

.ignoreFirstLine()

.types(String.class, Double.class); 内容来自samhan

// 数据分析与挖掘 zvvq好，好zvvq

DataSet<Tuple2<String, Double>> averageByCategory = dataSet.groupBy(0)

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.reduceGroup(new GroupReduceFunction<Tuple2<String, Double>, Tuple2<String, Double>>() { 本文来自zvvq

@Override 内容来自samhan

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

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Collector<Tuple2<String, Double>> out) throws Exception { 内容来自zvvq

String category = null;

double sum = 0; 本文来自zvvq

int count = 0;

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

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category = value.f0;

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sum += value.f1;

count++;

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} 本文来自zvvq

out.collect(new Tuple2<>(category, sum / count)); 内容来自samhan

} 内容来自samhan

}); 本文来自zvvq

// 加载报表模板 copyright zvvq

InputStream input = new FileInputStream(new File("resources/template.jrxml"));

JasperReport jasperReport = JasperCompileManager.compileReport(input);

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// 生成报表

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

JasperExportManager.exportReportToPdfFile(jasperPrint, "output/report.pdf");

// 发送邮件 zvvq

Properties props = new Properties();

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props.put("mail.smtp.auth", "true");

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

props.put("mail.smtp.host", "smtp.gmail.com");

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

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Session session = Session.getInstance(props,

new javax.mail.Authenticator() {

protected PasswordAuthentication getPasswordAuthentication() { zvvq

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

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} 内容来自zvvq

}); 内容来自samhan666

Message message = new MimeMessage(session);

message.setFrom(new InternetAddress("from@example.com")); 本文来自zvvq

message.setRecipients(Message.RecipientType.TO, zvvq好，好zvvq

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

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message.setSubject("Report"); 内容来自zvvq，别采集哟

message.setText("Please find the attached report.");

MimeBodyPart messageBodyPart = new MimeBodyPart(); 内容来自zvvq，别采集哟

Multipart multipart = new MimeMultipart();

messageBodyPart = new MimeBodyPart(); zvvq

String file = "output/report.pdf";

String fileName = "report.pdf";

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DataSource source = new FileDataSource(file);

messageBodyPart.setDataHandler(new DataHandler(source)); 内容来自samhan666

messageBodyPart.setFileName(fileName);

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multipart.addBodyPart(messageBodyPart);

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message.setContent(multipart);

Transport.send(message);

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