xml - 如何使用 XStream 框架对 UTF-8 进行编码？

Question

根据 XStream 的常见问题解答，其默认解析器不保留 UTF-8 文档编码，并且必须提供自己的编码器。如何做到这一点？

谢谢！

Answer 1

使用 UTF-8 编码创建一个 Writer。将 Writer 作为参数传递给 XStream 的 toXML 方法。

XStream xstream = new xStream();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

Writer writer = new OutputStreamWriter(outputStream, "UTF-8");

xStream.toXML(object, writer);
String xml = outputStream.toString("UTF-8");

您也可以使用该 Writer 来包含 XML 声明。

writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
xStream.toXML(object, writer);

Answer 2

另一种解决方案是通过驱动程序以正确的编码启动 XStream 对象。使用 DomDriver 这看起来像：

XStream xstream = new XStream(new DomDriver("UTF-8"));

（默认） PrettyPrintWriter 将由具有正确编码的输出流包装。但是，您不能以这种方式添加 UTF-8 标头...

Answer 3

With a current version of XStream, @Jeromy's example would look like this:

ByteArrayOutputStream stream = new ByteArrayOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(stream, "UTF-8");
HierarchicalStreamWriter xmlWriter = new PrettyPrintWriter(writer);
xstream.marshal(object, xmlWriter);
return new String(stream.toByteArray(), "UTF-8");