lal

import java.io.BufferedReader;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.ArrayList;

import java.util.List;

import java.util.StringTokenizer;

public class CsvResolve {

    public List<String[]> readCsv(String csvfilePath,String encodingCharSet)

    {

        List<String[]> resultList=new ArrayList<String[]>();

        try {

            FileInputStream csvfileInputStream = new FileInputStream(csvfilePath);

            InputStreamReader csvfileInputStreamReader = new InputStreamReader(csvfileInputStream , encodingCharSet);

            BufferedReader csvfileBufferedReader = new BufferedReader(csvfileInputStreamReader);

            String line = csvfileBufferedReader.readLine();

            String[] firstLineElements=line.split("\t");

            //输出第一行的内容

            for(int i=;i<firstLineElements.length;i++)

            {

                System.out.println(i+"\t"+firstLineElements[i]);

            }

            System.out.println();

            while ((line = csvfileBufferedReader.readLine()) != null) {

                String[] otherLineElements=line.split("\t");

                //如果结尾处有一个或多个tab键，说明，最后缺失的有元素

                //先把字符串数组转化为list，让后添加元素，然后再把添加完元素的list

                //转化为字符串数组

                if(otherLineElements.length<firstLineElements.length)

                {

                    String[] toaddOtherLineElements;

                    List<String> tempList=new ArrayList<String>();

                    int i=;

                    for(;i<otherLineElements.length;i++)

                    {

                        if(otherLineElements[i].equals(""))

                        {

                            tempList.add(null);

                        }else{

                            tempList.add(otherLineElements[i]);

                        }

                    }

                    for(;i<firstLineElements.length;i++)

                    {

                        tempList.add(null);

                    }

                    toaddOtherLineElements=tempList.toArray(new String[]);;

                    resultList.add(toaddOtherLineElements);

                }

                //如果长度相同说明最后的元素存在

                else{

                    String[] toaddOtherLineElements;

                    List<String> tempList=new ArrayList<String>();

                    int i=;

                    for(;i<otherLineElements.length;i++)

                    {

                        if(otherLineElements[i].equals(""))

                        {

                            tempList.add(null);

                        }else{

                            tempList.add(otherLineElements[i]);

                        }

                    }

                    toaddOtherLineElements=tempList.toArray(new String[]);;

                    resultList.add(toaddOtherLineElements);

                }

            }

            csvfileBufferedReader.close();

        } catch (FileNotFoundException e) {

            // 捕获File对象生成时的异常

            e.printStackTrace();

        } catch (IOException e) {

            // 捕获BufferedReader对象关闭时的异常

            e.printStackTrace();

        }

        return resultList;

    }

    public static void main(String[] args) {

        CsvResolve csvResolve=new CsvResolve();

        List<String[]> csvContent=csvResolve.readCsv("d:/csv/1.csv","utf-8");

        for(int i=;i<csvContent.size();i++)

        {

            String[] temp=csvContent.get(i);

            for(int j=;j<temp.length;j++)

            {

                System.out.println(j+"\t"+temp[j]);

            }

            System.out.println();

        }

    }

}