Java 将数据写入全路径下的指定文件

 1 package com.freud.algorithm.other;
 2 
 3 import java.io.File;
 4 import java.io.FileOutputStream;
 5 
 6 public class WriteData {
 7 
 8     public static void main(String[] args) {
 9 
10         writeToFile("aaa");
11     }
12 
13     public static void writeToFile(String data) {
14 
15         byte[] sourceByte = data.getBytes();
16         String path = "D:/file/";
17         String fileName = "test.txt";
18         if (null != sourceByte) {
19             try {
20                 File file = new File(path + fileName);//文件路径（路径+文件名）
21                 if (!file.exists()) {   //文件不存在则创建文件，先创建目录
22                     File dir = new File(file.getParent());
23                     dir.mkdirs();
24                     file.createNewFile();
25                 }
26                 FileOutputStream outStream = new FileOutputStream(file); //文件输出流将数据写入文件
27                 outStream.write(sourceByte);
28                 outStream.close();
29             } catch (Exception e) {
30                 e.printStackTrace();
31                 // do something
32             } finally {
33                 // do something
34             }
35         }
36     }
37 }