- package test;
- import java.io.BufferedReader;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.InputStreamReader;
- import java.io.OutputStreamWriter;
- public class FileHelper { public static void readFile(File file) throws IOException {
- BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
- String line = null;
- while ((line = br.readLine()) != null) {
- System.out.println(line);
- }
- }
- public static void writeFile(File file, String content) throws IOException {
- FileOutputStream fos = new FileOutputStream(file);
- OutputStreamWriter osw = new OutputStreamWriter(fos, "UTF-8");
- osw.write(content);
- osw.flush();
- }
- public static void appendFile(File file, String content) throws IOException {
- OutputStreamWriter out = new OutputStreamWriter(
- new FileOutputStream(file, true), // true to append
- "UTF-8"
- );
- out.write(content);
- out.close();
- }
- // main for test
- public static void main(String[] args) throws IOException {
- File file = new File("D:\\test.txt");
- writeFile(file, "");
- appendFile(file, "你好");
- appendFile(file, "!!!");
- readFile(file);
- }
- }
来源: http://www.bubuko.com/infodetail-2659019.html