如何转换字节数组中的Java到文件？

 字节[] objFileBytes，文件OBJFILE
 

解决方案

一个的文件对象的不包含文件的内容。它只是一个指向硬盘上你的文件。所以我想你想的是什么写入到硬盘驱动器。

您必须使用一些类的Java API中写入文件

 的BufferedOutputStream BOS =新的BufferedOutputStream（新的FileOutputStream（yourFile））;
bos.write（fileBytes）;
bos.flush（）;
bos.close（）;
 

您也可以使用一个OutputStream的作家来代替。使用作家将让你写的文字（字符串和char []）。

 的BufferedWriter体重=新的BufferedWriter（新的FileWriter（yourFile））;
 

既然你说你想要把一切都在内存中，不想写什么，你可以尝试使用 ByteArrayInputStream的。这是模拟一个InputStream，您可以传递给大部分的课程。

  ByteArrayInputStream的拜斯=新ByteArrayInputStream的（yourBytes）;
 

How to convert byte array to File in Java?

byte[] objFileBytes, File objFile

A File object doesn't contain the content of the file. It is only a pointer to the file on you hard drive. So I think what you want is writing it to the hard drive.

You have to write the file using some classes in the Java API

BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(yourFile));
bos.write(fileBytes);
bos.flush();
bos.close();

You can also use a Writer instead of an OutputStream. Using a writer will allow you to write text (String, char[]).

BufferedWriter bw = new BufferedWriter(new FileWriter(yourFile));

Since you said you wanted to keep everything in memory and don't want to write anything, you might try to use ByteArrayInputStream. This simulates an InputStream, which you can pass to the most of the classes.

ByteArrayInputStream bais = new ByteArrayInputStream(yourBytes);