import com.csvreader.CsvReader;
/**
     * CsvReader 讀取
     * @param filePath
     * @return
     */
    public static ArrayList<String> readCsvByCsvReader(String filePath) {
        ArrayList<String> strList = null;
        try {
            ArrayList<String[]> arrList = new ArrayList<String[]>();
            strList = new ArrayList<String>();
            CsvReader reader = new CsvReader(filePath, ',', Charset.forName("UTF-8"));
            while (reader.readRecord()) {
//                System.out.println(Arrays.asList(reader.getValues()));
                arrList.add(reader.getValues()); // 按行讀取，并把每一行的數(shù)據(jù)添加到list集合
            }
            reader.close();
            System.out.println("讀取的行數(shù)：" + arrList.size());
            // 如果要返回 String[] 類型的 list 集合，則直接返回 arrList
            // 以下步驟是把 String[] 類型的 list 集合轉(zhuǎn)化為 String 類型的 list 集合
            for (int row = 0; row < arrList.size(); row++) {
                // 組裝String字符串
                // 如果不知道有多少列，則可再加一個循環(huán)
                String ele = arrList.get(row)[0] + "," + arrList.get(row)[1] + ","
                        + arrList.get(row)[2] + "," + arrList.get(row)[3] ;
				System.out.println(ele);
                strList.add(ele);

            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return strList;
    }

<!--csv文件操作-->
        <dependency>
            <groupId>net.sourceforge.javacsv</groupId>
            <artifactId>javacsv</artifactId>
            <version>2.0</version>
        </dependency>

 /**
     * BufferedReader 讀取
     * @param filePath
     * @return
     */
    public static ArrayList<String> readCsvByBufferedReader(String filePath) {
        File csv = new File(filePath);
        csv.setReadable(true);
        csv.setWritable(true);
        InputStreamReader isr = null;
        BufferedReader br = null;
        try {
            isr = new InputStreamReader(new FileInputStream(csv), "UTF-8");
            br = new BufferedReader(isr);
        } catch (Exception e) {
            e.printStackTrace();
        }
        String line = "";
        ArrayList<String> records = new ArrayList<>();
        try {
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                records.add(line);
            }
            System.out.println("csv表格讀取行數(shù)：" + records.size());
        } catch (IOException e) {
            e.printStackTrace();
        }
        return records;
    }