package com.sandu.ximon.admin.utils;
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import java.io.*;
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/**
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* @program: machine-fast
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* @description: 文件操作类
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* @author: YSS
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* @create: 2019-04-24 13:58
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**/
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public class FileUtil {
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/**
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* 字段写入文件
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* @param newStr 字段
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* @param filePath 文件路径
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* @return
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* @throws
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*/
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public boolean writeToFile(String newStr,String filePath) throws IOException {
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OutputStream outputStream = null;
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OutputStreamWriter outputStreamWriter = null;
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BufferedWriter bufferedWriter = null;
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try{
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outputStream = new FileOutputStream(new File(filePath));
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outputStreamWriter = new OutputStreamWriter(outputStream, "utf-8");
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bufferedWriter = new BufferedWriter(outputStreamWriter);
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bufferedWriter.write(newStr);
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bufferedWriter.flush();
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}catch (Exception e){
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return false;
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}finally {
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try{
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if(bufferedWriter != null){
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bufferedWriter.close();
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}
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if(outputStreamWriter != null){
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outputStreamWriter.close();
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}
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if(outputStream != null){
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outputStream.close();
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}
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return true;
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}catch (IOException e){
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return false;
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}
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}
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}
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public byte[] fileToByte(String filePath){
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byte[] buffer = null;
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File file = new File(filePath);
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FileInputStream fileInputStream = null;
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ByteArrayOutputStream byteArrayOutputStream = null;
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try {
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fileInputStream = new FileInputStream(file);
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byteArrayOutputStream = new ByteArrayOutputStream();
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byte[] b = new byte[1024];
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int n;
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while ((n = fileInputStream.read(b)) != -1){
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byteArrayOutputStream.write(b, 0, n);
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}
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buffer = byteArrayOutputStream.toByteArray();
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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try {
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if(byteArrayOutputStream != null){
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byteArrayOutputStream.close();
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}
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if(fileInputStream != null){
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fileInputStream.close();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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return buffer;
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}
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}
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