In this quick tutorial we’ll take a look at how to convert a String to a Reader ,first using plain Java then Guava and finally the Commons IO library.
在这个快速教程中，我们将看看如何将一个字符串转换为读取器，首先使用普通Java，然后是Guava，最后是Commons IO库。
This article is part of the “Java – Back to Basic” series here on Baeldung.
本文是Baeldung网站上“Java – Back to Basic “系列的一部分。
1. With Plain Java
1.使用普通的Java
Let’s start with the Java solution:
让我们从Java的解决方案开始。
@Test
public void givenUsingPlainJava_whenConvertingStringIntoReader_thenCorrect() throws IOException {
String initialString = "With Plain Java";
Reader targetReader = new StringReader(initialString);
targetReader.close();
}As you can see, the StringReader is available out of the box for this simple conversion.
正如你所看到的，StringReader可以开箱即用，用于这种简单的转换。
2. With Guava
2.有番石榴
Next – the Guava solution:
下一步–番石榴方案。
@Test
public void givenUsingGuava_whenConvertingStringIntoReader_thenCorrect() throws IOException {
String initialString = "With Google Guava";
Reader targetReader = CharSource.wrap(initialString).openStream();
targetReader.close();
}We’re making use here of the versatile CharSource abstraction that allows us to open up a Reader from it.
我们在这里利用了多功能的CharSource抽象，允许我们从中打开一个Reader。
3. With Apache Commons IO
3.使用Apache Commons IO
And finally – here’s the Commons IO solution, also using a ready to go Reader implementation:
最后–这里是Commons IO解决方案，也是使用一个现成的Reader实现。
@Test
public void givenUsingCommonsIO_whenConvertingStringIntoReader_thenCorrect() throws IOException {
String initialString = "With Apache Commons IO";
Reader targetReader = new CharSequenceReader(initialString);
targetReader.close();
}So there we have it – 3 dead simple ways to convert a String to a Reader in Java. Make sure to check out the sample over on GitHub.