工具方法

• 創建目錄

org.apache.commons.io.FileUtils#forceMkdir(File directory)

• 寫文件

org.apache.commons.io.FileUtils#write(java.io.File, java.lang.CharSequence, java.lang.String, boolean)

普通文件讀寫

package com.io;import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.nio.charset.Charset;/*** @author yanyugang* @description 文件讀寫例子* @date 2019-10-14 9:36*/ public class ReadWriteFile {private static final String path="D:/readwritefile.txt";public static void main(String[] args){// 寫文件writeFileFun();// 讀文件readFileFun();}private static void writeFileFun(){//待寫入的內容StringBuffer buf=new StringBuffer();buf.append("Hello World!").append("\r\n");buf.append("你好，世界！").append("\r\n");buf.append("Hello Java!").append("\r\n");buf.append("你好，Java！").append("\r\n");File file = new File(path);if (!file.exists()) {file.getParentFile().mkdirs();}try (BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream(file, true))) {// 父級目錄存在的情況下，文件才能創建成功bos.write(buf.toString().getBytes(Charset.defaultCharset()));bos.flush();} catch (Exception e) {e.printStackTrace();}}private static void readFileFun(){//待讀取的內容try (BufferedInputStream bis=new BufferedInputStream(new FileInputStream(new File(path)))) {byte[] buf=new byte[1024];int len=0;System.out.println("------------------讀取內容--------------------------");while ((len=bis.read(buf))!=-1) {System.out.println(new String(buf, 0, len));}} catch (Exception e) {e.printStackTrace();}}}

commons-io文件讀寫

package com.io;import org.apache.commons.io.FileUtils;import java.io.File; import java.io.IOException;/*** @author yanyugang* @description commons-io實現文件讀寫例子* @date 2019-10-14 9:36*/ public class CommonsIoReadWriteFile {private static final String path="D:/day22/commonsioreadwritefile.txt";public static void main(String[] args){// 寫文件writeFileFun();// 讀文件readFileFun();}private static void writeFileFun(){//待寫入的內容StringBuffer buf=new StringBuffer();buf.append("Hello World!").append("\r\n");buf.append("你好，世界！").append("\r\n");buf.append("Hello Java!").append("\r\n");buf.append("你好，Java！").append("\r\n");try {FileUtils.writeStringToFile(new File(path), buf.toString(), "UTF-8", true);} catch (IOException e) {e.printStackTrace();}}private static void readFileFun(){//待讀取的內容System.out.println("------------------讀取內容--------------------------");try {System.out.println(FileUtils.readFileToString(new File(path), "UTF-8"));} catch (IOException e) {e.printStackTrace();}}}

總結

以上是生活随笔為你收集整理的commons-io之FileUtils的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。