91 lines
1.9 KiB
Java
91 lines
1.9 KiB
Java
package com.ruoyi.common.utils;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.OutputStream;
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/**
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* 文件处理工具类
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*
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* @author ruoyi
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*/
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public class FileUtils
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{
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/**
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* 输出指定文件的byte数组
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*
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* @param filename 文件
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* @return
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*/
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public static void writeBytes(String filePath, OutputStream os) throws IOException
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{
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FileInputStream fis = null;
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try
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{
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File file = new File(filePath);
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if (!file.exists())
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{
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throw new FileNotFoundException(filePath);
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}
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fis = new FileInputStream(file);
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byte[] b = new byte[1024];
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int length;
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while ((length = fis.read(b)) > 0)
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{
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os.write(b, 0, length);
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}
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}
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catch (IOException e)
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{
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throw e;
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}
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finally
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{
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if (os != null)
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{
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try
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{
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os.close();
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}
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catch (IOException e1)
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{
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e1.printStackTrace();
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}
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}
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if (fis != null)
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{
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try
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{
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fis.close();
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}
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catch (IOException e1)
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{
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e1.printStackTrace();
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}
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}
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}
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}
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/**
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* @Desc 删除文件
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* @param filePath 文件
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* @return
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*/
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public static boolean deleteFile(String filePath)
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{
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boolean flag = false;
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File file = new File(filePath);
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// 路径为文件且不为空则进行删除
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if (file.isFile() && file.exists())
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{
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file.delete();
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flag = true;
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}
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return flag;
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}
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}
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