1. Overview
1.概述
In this quick tutorial we’re going to illustrate how to convert a simple byte[] to an InputStream, first using plain java and then the Guava library.
在这个快速教程中,我们将说明如何将一个简单的byte[]转换为InputStream,首先使用普通java,然后使用Guava库。
This article is part of the “Java – Back to Basic” series here on Baeldung.
本文是“Java – 回到基础“系列的一部分,在Baeldung这里。
2. Convert Using Java
2.使用Java进行转换
First – let’s look at the Java solution:
首先–让我们看看Java的解决方案。
@Test
public void givenUsingPlainJava_whenConvertingByteArrayToInputStream_thenCorrect()
throws IOException {
byte[] initialArray = { 0, 1, 2 };
InputStream targetStream = new ByteArrayInputStream(initialArray);
}
3. Convert Using Guava
3.使用Guava进行转换
Next – let’s use wrap the byte array into the Guava ByteSource – which then allows us to get the stream:
接下来–让我们把字节数组包进Guava的ByteSource–这样我们就可以获得流。
@Test
public void givenUsingGuava_whenConvertingByteArrayToInputStream_thenCorrect()
throws IOException {
byte[] initialArray = { 0, 1, 2 };
InputStream targetStream = ByteSource.wrap(initialArray).openStream();
}
And there you have it – a simple way of opening an InputStream from a byte array.
你已经有了 – 一个从字节数组打开InputStream的简单方法。