我可以使用CompactWriter（）删除xml（所有换行符/回车符）中的prettyprint，但是如何保留我的序言和样式表？
目前，我正在使用Writer类使用write方法添加序言和样式表。
以下是我序列化对象的功能。
private void serializeData(DiagData diagData){
fileinfo=new HashMap<String,String>();
XStream xstream = new XStream();
xstream.processAnnotations(DiagData.class);
FileOutputStream fileOutputStream=null;
Writer writer=null;
//CompactWriter writer=null;
xstream.registerConverter(new MapConverter());
try {
String path = Constants.XML_PATH+File.separator+Constants.DIRECTORY_NAME;
File diagnosticDir = new File(path);
String serialNumber=null;
IDataCollector dataCollector=new DataCollector();
serialNumber=dataCollector.getSerialNumber();
String fileName = new SimpleDateFormat("yyyyMMddhhmmss'.xml'").format(new Date());
if(serialNumber!=null)fileName=serialNumber+Constants.UNDERSCORE+fileName;
fileName=Constants.PHONEHOME+Constants.UNDERSCORE+fileName;
fileOutputStream = new FileOutputStream(path+File.separator+fileName);
writer = new OutputStreamWriter(fileOutputStream);
//writer = new CompactWriter(new OutputStreamWriter(fileOutputStream));
writer.write(Constants.PROLOG);
writer.write(Constants.STYLESHEET);
xstream.toXML(diagData, writer);
//xstream.marshal(diagData, writer);
} catch (FileNotFoundException e1) {
} catch (Exception e) {
} finally {
try {
fileOutputStream.close();
writer.close();
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
}
最佳答案
如果您查看XStream documentation，则它们明确指出您必须自己添加XML序言：
Why does XStream not write an XML declaration?
XStream is designed to write XML snippets, so you can embed its output into
an existing stream or string. You can write the XML declaration yourself into
the Writer before using it to call XStream.toXML(writer).
下面的代码应该工作。我删除了大部分代码，因此您必须将其放回去。目的只是给您一个粗略的工作示例：
private static void serializeData(Object diagData) throws Exception {
XStream xstream = new XStream();
xstream.processAnnotations(DiagData.class);
FileOutputStream fileOutputStream = null;
Writer writer = new PrintWriter(new File(your file));
CompactWriter compactWriter = new CompactWriter(writer);
try {
writer.write(your xml prolog);
writer.write(your stylesheet);
xstream.marshal(diagData, compactWriter);
} catch (FileNotFoundException e1) {
} catch (Exception e) {
} finally {
release resources
}
}