盘点lotnum批次号
yiming
4 years ago
parent
6e5c8fb47e
commit
1c15675ba6
@ -0,0 +1,59 @@
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package com.zhehekeji.common.util;
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import lombok.extern.slf4j.Slf4j;
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import java.io.*;
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@Slf4j
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public class FileUtil {
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public static void save(String text,String path){
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//判断文件是否存在
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File file = new File(path);
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if (!file.exists()) {
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try {
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file.createNewFile();
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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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try {
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FileOutputStream fileOutputStream = new FileOutputStream(file);
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fileOutputStream.write(text.getBytes());
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fileOutputStream.close();
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log.info("write text success :{}",text);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public static String getText(String path){
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File file = new File(path);
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if(file.exists()){
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try {
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FileInputStream fileInputStream = new FileInputStream(file);
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byte[] bytes = new byte[1024];//定义字节长度
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int len = 0;
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String txt = null;
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while ((len = fileInputStream.read(bytes)) != -1) {//与文件读取出来的长度比较,内部有数据读完是-1,所以不等于-1
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txt = new String(bytes, 0, len);//从0取到有数据的末尾
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}
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fileInputStream.close();
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return txt;
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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 null;
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}
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public static void main(String[] args) {
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String path = "./lotnum_now";
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save("www",path);
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getText(path);
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}
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}
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