Java通过BufferedWriter追加内容到文件末尾的几种常用方法求答案

发布网友发布时间：2022-05-05 05:45

共1个回答

热心网友时间：2023-10-11 12:16

import java.io.BufferedWriter; import java.io.FileOutputStream; import java.io.FileWriter; import java.io.IOException; import java.io.OutputStreamWriter; import java.io.RandomAccessFile; public class WriteStreamAppend { public static void method1(String file, String conent) { BufferedWriter out = null; try { out = new BufferedWriter(new OutputStreamWriter( new FileOutputStream(file, true))); out.write(conent); } catch (Exception e) { e.printStackTrace(); } finally { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } public static void method2(String fileName, String content) { try { // 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件 FileWriter writer = new FileWriter(fileName, true); writer.write(content); writer.close(); } catch (IOException e) { e.printStackTrace(); } } public static void method3(String fileName, String content) { try { // 打开一个随机访问文件流，按读写方式 RandomAccessFile randomFile = new RandomAccessFile(fileName, "rw"); // 文件长度，字节数 long fileLength = randomFile.length(); // 将写文件指针移到文件尾。 randomFile.seek(fileLength); randomFile.writeBytes(content); randomFile.close(); } catch (IOException e) { e.printStackTrace(); } } public static void main(String[] args) { System.out.println("start"); method1("c:/test.txt", "追加到文件的末尾"); System.out.println("end"); }