JAVA--读取csv文件并导数


package com.datahander;

import java.io.File;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;

import com.csvreader.CsvReader;
import com.util.Manager;

public class ReadCsv {
    private static boolean flag = false;;
    /**
     * csv文件导数
     * @param file
     */
    public static void  cvsManager(File file){  
        if(file.exists() || file.length() > 0){
            flag = isPics(file.getName());
            if(!flag){
                System.out.println("文件格式错误");
            }else{
                try {
                    List<String[]> csvList = new ArrayList<String[]>(); //用来保存数据  
                    String csvFilePath = file.getPath();  
                    CsvReader reader = null;
                    try{
                        reader = new CsvReader(csvFilePath, ',', Charset.forName("UTF-8"));
                        //reader.readHeaders();          // 跳过表头   如果需要表头的话,不要写这句。
                        int lineSum = 0;
                        int count = 1000;
                        while(reader.readRecord()){    //逐行读入除表头的数据
                            lineSum ++;
                            String s[]=reader.getValues();
                            for(int i=0;i<s.length;i++){
                                s[i]=s[i].replaceAll("'","");
                                s[i]=s[i].replaceAll("\\","/");
                            }
                            System.out.println(s);
                            csvList.add(s);  
                            if(lineSum % count == 0){
                                importDataToMySql(csvList);   //调用导数的方法
                                System.out.println("已插入1000条");
                                csvList.clear();
                            }
                        }
                        importDataToMySql(csvList);
                        csvList.clear();
                        System.err.println("插入完成!");
                    }finally{
                        reader.close();          
                    }    
                }catch(Exception ex){  
                    System.out.println(ex);  
                }
            }
        }else{
            System.err.println("文件不存在或文件为空!");
        }
    }
    /**
     * 将集合导入到数据库中去
     * @param csvList
     */
    public static void importDataToMySql(List<String[]> csvList){
        String va = "";
        String table="cvsdatas";
        String val="(company_name,cate_name,province,city,area,address,contact_people,contact_phone,telephone,website,email,latitude,longitude,product,description,logo,company_id)";
        for(int row=0;row<csvList.size();row++){  
            va+="('" + csvList.get(row)[0]+"','"+csvList.get(row)[1]+"','"+csvList.get(row)[2]+"','"+csvList.get(row)[3]+"','"+csvList.get(row)[4]+"','"+csvList.get(row)[5]+"','"+csvList.get(row)[6]+"','"+csvList.get(row)[7]+"','"+csvList.get(row)[8]+"','"+csvList.get(row)[9]+"','"+csvList.get(row)[10]+"','"+csvList.get(row)[11]+"','"+csvList.get(row)[12]+"','"+csvList.get(row)[13]+"','"+csvList.get(row)[14]+"','"+csvList.get(row)[15]+"','"+csvList.get(row)[16]+ "'),";
        }
        va=va.substring(0, va.length()-1);
        Manager.insertData(table,va,val);  
    }
    public static boolean isPics(String filename)  
    {  
        boolean flag = false;    
        if(filename.endsWith(".csv"))  
            flag = true;      
        return flag;  
    }
}


 
原文地址:https://www.cnblogs.com/zqzdong/p/4840828.html