过滤文本文档中的数据并插入Cassandra数据库

代码如下：

package com.locationdataprocess;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;

//过滤数据中的GPS数据
public class FilterGPSData {
    static Connection con=null;
    public static void insertGPS(){
        String fileName[]={"Zhengye_DriveTesting_08-18.09-07.txt","Zhengye_DriveTesting_08-18.09-13.txt",
                "Zhengye_DriveTesting_08-18.17-40.txt","Zhengye_DriveTesting_08-18.17-48.txt",
                "Zhengye_DriveTesting_08-19.17-19.txt","Zhengye_DriveTesting_08-20.09-33.txt",
                "Zhengye_DriveTesting_08-20.18-05.txt","Zhengye_DriveTesting_08-19.09-08.txt",
                "Zhengye_DriveTesting_08-21.18-07.txt","Zhengye_DriveTesting_08-21.18-07.txt"
        };
        for (int k = 0; k < 10; k++) {
            File file = new File("H:\项目数据\Zhengye_Drive_Testing_Data\"
                    + fileName[k]);
            try {
                FileInputStream fis = new FileInputStream(file);
                InputStreamReader isr = new InputStreamReader(fis);
                BufferedReader br = new BufferedReader(isr);
                String line = null;
                while ((line = br.readLine()) != null) {
                    String s = line.trim();
                    // String pre[] = new String[8];
                    // pre[0] = "GPS Time";
                    // pre[1] = "Longitude";
                    // pre[2] = "Latitude";
                    // pre[3] = "Altitude";
                    // pre[4] = "Heading";
                    // pre[5] = "Speed";
                    // pre[6] = "Source";
                    // pre[7] = "Satellites";
                    // for(int i=0;i<pre.length;i++){
                    // if (s.startsWith(pre[i])) {
                    // System.out.println(s);
                    // break;
                    // }
                    // }

                    if (s.startsWith("GPS Time")) {
                        try {
                            String data[] = new String[8];
                            data[0] = fileName[k].substring(21, 32)+" "+s.split("=")[1].trim();
                            // System.out.println(s);
                            int i = 0;
                            while (i < 7 && (line = br.readLine()) != null) {
                                if (!line.equals("")) {
                                    data[i + 1] = line.split("=")[1].trim();
                                    // System.out.println(line.trim());
                                    i++;
                                }
                            }
                            String insert = "insert into gpsdata.gps(gps_time,longitude,latitude,altitude,heading,speed,source,satellites)"
                                    + " values(?,?,?,?,?,?,?,?)";
                            PreparedStatement psta = con
                                    .prepareStatement(insert);
                            for (int j = 0; j < 8; j++) {
                                psta.setString(j + 1, data[j]);
                            }
                            psta.executeUpdate();
                            psta.close();
                        } catch (SQLException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                }
                System.out.println(fileName[k]+"插入成功！");
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
    
    //连接数据库
    public static void connection(){
        try {
            Class.forName("org.apache.cassandra.cql.jdbc.CassandraDriver");
            con = DriverManager
                    .getConnection("jdbc:cassandra://127.0.0.1:9160/gpsdata");
            String sql = "CREATE TABLE IF NOT EXISTS gpsdata.gps (gps_time varchar,longitude varchar,latitude varchar,altitude varchar,heading varchar,speed varchar,source varchar,satellites varchar,PRIMARY KEY (gps_time))";
            Statement sta = con.createStatement();
            sta.execute(sql);
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SQLException e) {
            System.out.println("连接断开！");
            e.printStackTrace();
        }
    }

    //关闭连接
    public static void disConnection(){
        if(con!=null)
            try {
                con.close();
                System.out.println("数据库连接正常关闭！");
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    }
    
    
    
    public static void main(String[] args) {
        connection();
        insertGPS();
        disConnection();
    }

}