java实现批量导入.csv文件到mysql数据库

这篇博文是在参加CCF时导入.csv文件时自己总结的，虽然NavicatForMysql可以导入.csv文件，可是当我导入的时候不知道是文件太大还是什么原因，总是会出现失败。然后就用java写了一个批量导入数据的类去导入该.csv文件，这里也没有考虑代码的结构，只是为了快速的完成这个工作，做一个总结。

package com.cqu.price_prediction.farm;
 
import java.io.File;
import java.io.FileNotFoundException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Scanner;
 
public class Read
{
 private static Connection con;
 
 public static void main(String[] args) throws FileNotFoundException, SQLException
 {
 
 long startTime = System.currentTimeMillis();
 File file = new File("H:/AgriculturalProduct/data/farming.csv");
 
 Scanner in = new Scanner(file);
 
 getConnect();
 System.out.println("数据库连接成功");
 insert_data(in);
 
 long EndTime = System.currentTimeMillis();
 long time = (EndTime - startTime) / 1000;
 
 System.out.println("导入数据共用时：" + time);
 }
 
 private static void insert_data(Scanner in) throws SQLException
 {
 int count = 0;
 String sql = "insert into farming (province,market,type,name,standard,area,color,unit,minprice,avgprice,maxprice,entertime,time)"
 + "values(?,?,?,?,?,?,?,?,?,?,?,?,?)";
 
 con.setAutoCommit(false);
 PreparedStatement pstmt = con.prepareStatement(sql);
 in.next();
 while (in.hasNext())
 {
 String temp1 = in.nextLine();
 String[] temp = temp1.split(",");
 
 if (temp.length < 13)
 continue;
 
 if (temp.length == 13)
 {
 pstmt.setString(1, temp[0]);
 pstmt.setString(2, temp[1]);
 pstmt.setString(3, temp[2]);
 pstmt.setString(4, temp[3]);
 pstmt.setString(5, temp[4]);
 pstmt.setString(6, temp[5]);
 pstmt.setString(7, temp[6]);
 pstmt.setString(8, temp[7]);
 pstmt.setString(9, temp[8]);
 pstmt.setString(10, temp[9]);
 pstmt.setString(11, temp[10]);
 pstmt.setString(12, temp[11]);
 pstmt.setString(13, temp[12]);
 }
 
 pstmt.addBatch();
 
 count++;
 
 if (count == 20000)
 {
 count = execute(pstmt, count);
 }
 }
 pstmt.executeBatch();
 con.commit();
 
 }
 
 public static int execute(PreparedStatement pstmt, int count) throws SQLException
 {
 
 pstmt.executeBatch();
 con.commit();
 return 0;
 
 }
 
 private static void getConnect()
 {
 try
 {
 Class.forName("com.mysql.jdbc.Driver");
 con = DriverManager.getConnection(
  "jdbc:mysql://localhost:3306/agricultural_price_prediction?useUnicode=true&characterEncoding=utf8&useServerPrepStmts=false&rewriteBatchedStatements=true",
  "root", "123456");
 }
 catch (ClassNotFoundException | SQLException e)
 {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
 
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持自由互联。