CSV文件解析工具

package com.common.util;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
 * excel与csv解析
 *
 * @author Administrator
 *
 */
public class ExcelAndCsvRead {
     private InputStreamReader fr = null;
        private BufferedReader br = null;  

       public ExcelAndCsvRead(String f) throws IOException {
           fr = new InputStreamReader(new FileInputStream(f));
       }
       /**
         * 解析csv文件 到一个list中 每个单元个为一个String类型记录，每一行为一个list。 再将所有的行放到一个总list中
         */
        public List<List<String>> readCSVFile() throws IOException {
            br = new BufferedReader(fr);
            String rec = null;// 一行
            String str;// 一个单元格
            List<List<String>> listFile = new ArrayList<List<String>>();
            try {
                // 读取一行
                while ((rec = br.readLine()) != null) {
                    Pattern pCells = Pattern
                            .compile("(\"[^\"]*(\"{2})*[^\"]*\")*[^,]*,*");
                    Matcher mCells = pCells.matcher(rec);
                    List<String> cells = new ArrayList<String>();// 每行记录一个list
                    // 读取每个单元格
                    while (mCells.find()) {
                        str = mCells.group();
                        str = str.replaceAll(
                                "(?sm)\"?([^\"]*(\"{2})*[^\"]*)\"?.*,", "$1");
                        str = str.replaceAll("(?sm)(\"(\"))", "$2");
                        cells.add(str);
                    }
                    listFile.add(cells);
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (fr != null) {
                    fr.close();
                }
                if (br != null) {
                    br.close();
                }
            }
            return listFile;
        }

　　　　//测试
        public static void main(String[] args) throws Throwable {
            ExcelAndCsvRead test = new ExcelAndCsvRead("C://Users//Administrator//AppData//Local//Temp//moban.csv");   //传入需要解析的文件路径
            List<List<String>> csvList = test.readCSVFile();
            System.out.println(csvList.get(0));   //解析文件的title
            System.out.println(csvList.get(1)); //文件的第一行数据
            System.out.println(csvList.get(2));//文件的第二行数据
        }
}