将 java.io.StringWriter 转换为 byte[] 数组
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Convert java.io.StringWriter to byte[] array
提问by Adeeb Cheulkar
How to convert java.io.StringWriterto byte[]array?
Using OpenCSVi get StringWriterswobject and this swobject I want to convert into byte[]array.
如何转换java.io.StringWriter为byte[]数组？使用OpenCSVi get StringWriterswobject 和这个sw对象我想转换成byte[]数组。
回答by Peter Lawrey
You can do
你可以做
byte[] bytes = stringWriter.toString().getBytes("UTF-8");
回答by Jon Skeet
You need to decide which encoding you want to use:
您需要决定要使用哪种编码：
- Call
StringWriter.toString()to get the contents out as a string - Call
String.getBytes(Charset)orString.getBytes(String)to convert the string to a byte array
- 调用
StringWriter.toString()以将内容作为字符串取出 - 调用
String.getBytes(Charset)或String.getBytes(String)将字符串转换为字节数组
Don'tuse the parameterless String.getBytes()call - that will use the platform default encoding. Even if you wantto use that, I'd strongly encourage you to specify it explicitly, to make it clear to anyone who reads it.
不要使用无参数String.getBytes()调用 - 这将使用平台默认编码。即使您想使用它，我也强烈建议您明确指定它，以便任何阅读它的人都能清楚地了解它。
