本文翻译自：How do I convert a String to an InputStream in Java? [duplicate]
This question already has an answer here: 这个问题已经在这里有了答案：
Given a string: 给定一个字符串：
String exampleString = "example";
How do I convert it to an InputStream ? 如何将其转换为InputStream ？
#1楼
参考：https://stackoom.com/question/3HTm/如何在Java中将字符串转换为InputStream-重复
#2楼
Like this: 像这样：
InputStream stream = new ByteArrayInputStream(exampleString.getBytes(StandardCharsets.UTF_8));
Note that this assumes that you want an InputStream that is a stream of bytes that represent your original string encoded as UTF-8 . 请注意，这假设您需要一个InputStream，它是一个字节流，它表示编码为UTF-8的原始字符串。
For versions of Java less than 7, replace StandardCharsets.UTF_8 with "UTF-8" . 对于Java版本少于7的版本，将StandardCharsets.UTF_8替换为"UTF-8" 。
#3楼
您可以使用StringReader，并使用此其他stackoverflow帖子中的解决方案将阅读器转换为输入流。
#4楼
I find that using Apache Commons IO makes my life much easier. 我发现使用Apache Commons IO使我的生活更加轻松。
String source = "This is the source of my input stream";
InputStream in = org.apache.commons.io.IOUtils.toInputStream(source, "UTF-8");
You may find that the library also offer many other shortcuts to commonly done tasks that you may be able to use in your project. 您可能会发现该库还提供了许多其他快捷方式，可以在项目中使用这些常用任务。
