.CSV文件是以逗号分割的数据仓储,读取数据时从每一行中读取一条数据元祖,也就是一条数据,再用字符分割的方式获取表中的每一个数据项。
- import java.io.BufferedReader;
- import java.io.FileReader;
-
- public class TestRead {
-
- public static void main(String[] args) {
- try {
- BufferedReader reader = new BufferedReader(new FileReader("a.csv"));
- reader.readLine();
- String line = null;
- while((line=reader.readLine())!=null){
- String item[] = line.split(",");
-
- String last = item[item.length-1];
-
- System.out.println(last);
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
-
- }
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写入数据则注意数据逗号分隔的格式,以文件写入的方式即可。
- package com.mark.csv;
-
- import java.io.BufferedWriter;
- import java.io.File;
- import java.io.FileNotFoundException;
- import java.io.FileWriter;
- import java.io.IOException;
-
- public class WriteCSV {
-
- public static void main(String[] args) {
- try {
- File csv = new File("F:/writers.csv");
-
- BufferedWriter bw = new BufferedWriter(new FileWriter(csv, true));
-
- bw.write("\"李四\"" + "," + "\"1988\"" + "," + "\"1992\"");
- bw.newLine();
- bw.close();
-
- } catch (FileNotFoundException e) {
-
- e.printStackTrace();
- } catch (IOException e) {
-
- e.printStackTrace();
- }
- }
- }
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