如何使用XStream框架编码UTF-8？

Question

根据XStream的FAQ，它的默认解析器不保留UTF-8文档编码，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。 你无法以这种方式添加UTF-8标题......

Answer 3

使用当前版本的XStream，@ Jeromy的示例如下所示：

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");