如何禁用XStream中的漂亮打印（空白/换行符）？ [英] How to disable pretty-printing(white space/newline) in XStream?

问题描述

这是我为XML创建XStream实例的方法：

This is how I create XStream instance for XML:

XStream xstream = new XStream();

这是针对JSON的：

private final XStream xstream = new XStream(new JsonHierarchicalStreamDriver() {
        public HierarchicalStreamWriter createWriter(Writer writer) {
            return new JsonWriter(writer, JsonWriter.DROP_ROOT_MODE);
        }
    });

它们都是非常打印（缩进）输出。

Both of them are pretty-printing (indenting) the output.

如何让XStream禁用漂亮的打印？

How can I ask the XStream to disable the pretty printing?

推荐答案

在社区的帮助下，我找到了答案。

With some help from the community, I've figured out the answer.

对于XML ，您必须改变序列化的方式：

For XML you have to change the way how you serialize:

该行：

xStream.toXML(o, new OutputStreamWriter(stream, encoding));

更改为行

xStream.marshal(o, new CompactWriter(new OutputStreamWriter(stream, encoding)));

对于JSON ，您只能更改XStream的创建方式。因此，XStream的初始化更改为：

For JSON you only change the way how the XStream is created. So the initialization of the XStream is changed to:

private final XStream xstreamOut = new XStream(new JsonHierarchicalStreamDriver() {
    public HierarchicalStreamWriter createWriter(Writer writer) {
        return new JsonWriter(writer, new char[0], "", JsonWriter.DROP_ROOT_MODE);
    }
});

请注意，使用了4参数JsonWriter构造函数。

Note that the 4-parameter JsonWriter constructor is used.

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