CODA数据集 -- 出租车存MySQL源码

主类：

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;

public class Test {

    private static Connection connection;
    private static Statement statement;

    private Table currentTable;

    private static int count=0;

    public static void main(String[] args){


        Test test = new Test();
        test.getConn();

        for (int i = 2; i<= 288; i++){
            String index;
            if (i<10) {
                index = "00" + i;
            }else if (i<100){
                index = "0" + i;
            } else {
                index = "" + i;
            }
            String tableName = "20170301_" + index;
            System.out.println(tableName + " is running...");
            test.createTable(tableName);
            test.readFile(tableName);
            System.out.println("sum: " + test.countTable(tableName));
        }
        try {
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }

    private void getConn() {
        String driver = "com.mysql.jdbc.Driver";
        String url = "jdbc:mysql://localhost:3306/taxi";
        String username = "?????";
        String password = "??????";
        Connection conn = null;
        try {
            Class.forName(driver); //classLoader,加载对应驱动
            connection = DriverManager.getConnection(url, username, password);
            statement = connection.createStatement();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    private void createTable(String tableName){
        currentTable = new Table(tableName);
        currentTable.addItem("id", "int UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT");
        currentTable.addItem("date", "date");
        currentTable.addItem("time", "time");
        currentTable.addItem("placeholder", "varchar(5)");
        currentTable.addItem("taxi_id", "varchar(50)");
        currentTable.addItem("longitude", "decimal");
        currentTable.addItem("latitude", "decimal");
        currentTable.addItem("speed", "decimal");
        currentTable.addItem("direction", "int");
        currentTable.addItem("state", "tinyint");
        currentTable.addItem("validity", "tinyint");
        String createTableSql = currentTable.makeCreateTableStatement();
        try {
            boolean rs = statement.execute(createTableSql);
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }
    private void insert(String line){
        String insertSql = currentTable.makeInsertStatement(line);
//        System.out.println(insertSql);
        try {
            statement.executeUpdate(insertSql);
            count++;
        } catch (SQLException e) {
            e.printStackTrace();
            System.out.println(count);
            System.exit(1);
        }
    }
    private int countTable(String tableName){
        int res = 0;
        try {
            ResultSet resultSet = statement.executeQuery("select count(*) from "+ tableName + ";");
            if(resultSet.next()) {
                res=resultSet.getInt(1);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return res;

    }

    private void readFile(String tableName){
        try {
            String rootPath = "E:\\CODA数据\\3 出租 -- 出租车轨迹样本\\01\\";
            FileReader fileReader = new FileReader(rootPath + tableName + ".txt");
            BufferedReader br = new BufferedReader(fileReader); // 建立一个对象，它把文件内容转成计算机能读懂的语言
            String line;
            //网友推荐更加简洁的写法
            ArrayList<String> list = new ArrayList();
            int count = 0;
            int per = 500;
            while ((line = br.readLine()) != null) {
                // 一次读入一行数据
                list.add("(" + addQuote(line) + ")");
                count++;
                if (count == per){
                    insertArray(list);
                    count=0;
                }
            }
            if (!list.isEmpty()){
                insertArray(list);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    private String addQuote(String line){
        StringBuilder sb = new StringBuilder(line);
        sb.deleteCharAt(18).deleteCharAt(18);

        sb.insert(16, "'").insert(18,"'").insert(20,"'").insert(31, "'");
        return sb.toString();
    }
    private void insertArray(ArrayList<String> list){
        String sql = "";
        for (String item : list){
            sql = sql + item + ",";
        }
//        System.out.println(sql);
        insert(sql.substring(0, sql.length()-1));
        list.clear();
    }

}

---

Table类

import java.util.LinkedHashMap;
import java.util.Map;

public class Table {

    private LinkedHashMap<String, String> items = new LinkedHashMap<String, String>();
    private String tableName;

    Table(String name){
        this.tableName = name;
    }


    public String getTableName() {
        return tableName;
    }

    public void setTableName(String tableName) {
        this.tableName = tableName;
    }

    public void addItem(String name, String restrain){
        this.items.put(name, restrain);
    }

    public String makeCreateTableStatement(){
        String sql="CREATE TABLE IF NOT EXISTS " + this.tableName + " (";
        for (Map.Entry<String, String> entry: items.entrySet()){
            sql += entry.getKey() + " " + entry.getValue() + ",";
        }
        sql = sql.substring(0, sql.length()-1);

        return sql + ");";
    }

    public String makeInsertStatement(String line){
        String sql = "Insert Into " + this.tableName + "(";
        for (Map.Entry<String, String> entry: items.entrySet()){
            if (entry.getKey().equals("id")) continue;
            sql += entry.getKey() + ",";
        }
        sql = sql.substring(0, sql.length()-1) + ") Values " + line ;
        return sql + ";";
    }
}