java对csv格式的读写操作

CSV格式:

它可以用excel打开,如果用记事本打开,会发现它是一种使用逗号(",")作为不同列之间的分隔符.

读取CSV格式:

import java.io.*;/** * 使用例子: * CSVReader reader = new CSVReader("D:\\114.csv"); * String str1 = reader.readLine();//得到第一行 * String str2 = reader.readLine();//得到第二行 */public class CSVReader {    BufferedReader reader;    public String readLine() throws IOException {        return reader.readLine();    }    public CSVReader(String pathname) throws FileNotFoundException {        this.reader = new BufferedReader(new FileReader(new File(pathname)));    }}

写入CSV格式:

import java.io.*;/** * 使用例子 * CSVWriter writer = new CSVWriter("D:\\114.csv"); * writer.write(new String[]{"a", "b", "c"});//第一行写入 a b c * writer.write(new String[]{"d", "e", "f"});//第二行写入 d e f */public class CSVWriter {    private BufferedWriter writer;    public void write(String[] writeStrings) throws IOException {        for (String str : writeStrings) {            writer.append(str + ",");        }        writer.append("\r");        writer.flush();    }    public CSVWriter(String writePath) throws FileNotFoundException, UnsupportedEncodingException {        this.writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(writePath)), "GBK"));    }}