JettisonMappedXmlDriver和漂亮的XStream打印

Question

我正在用XStream进行序列化。对于XML我使用StaxDriver和JSON我使用JettisonMappedXmlDriver：

if (this.format == ISerializer.Format.JSON){ 
    logger.info("json"); 
    /* note: JsonHierarchicalStreamDriver can read Json only */ 
    this.xstream = new XStream(new JettisonMappedXmlDriver()); 
} 
else if (this.format == ISerializer.Format.XML){ 
    logger.info("xml"); 
    this.xstream = new XStream(new StaxDriver()); 
} 

随着XML我得到相当的打印，使用JSON，我从来没有漂亮打印：

public boolean toStream(Object object, Writer writer){ 
     if(this.usePrettyPrint == true){ 
     this.xstream.marshal(object, new PrettyPrintWriter(writer)); 
    }else{ 
      this.xstream.toXML(object, writer); 
    } 
    return true; 
} 

如果我离开我的这个代码这样，我会得到XML而不是JSON，我不得不重写我的代码这种方式来获得JSON，但不适合打印：

public boolean toStream(Object object, Writer writer){ 
    if (this.format == ISerializer.Format.JSON){ 
     this.xstream.toXML(object, writer); 
    } 
    else{ 
     if(this.usePrettyPrint == true){ 
      this.xstream.marshal(object, new PrettyPrintWriter(writer)); 
     }else{ 
      this.xstream.toXML(object, writer); 
     } 
    } 
    return true; 
} 

你知道一种方式来获得漂亮的打印在JSON与JettisonMappedXmlD河？

在XStream的文档没有关于它的信息，他们甚至似乎觉得OK：

http://x-stream.github.io/json-tutorial.html

，但我不能相信，有没有办法让漂亮打印JSON，如果你使用的XStream希望能够序列化和反序列化（JettisonMappedXmlDriver）...

谢谢！

Answer 1

我曾经有过类似的问题，但我用JsonHierarchicalStreamDriver和我的解决办法是

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

所以也许

this.xstream = new XStream(new JettisonMappedXmlDriver() { 
    public HierarchicalStreamWriter createWriter(Writer writer) { 
     return new JsonWriter(writer, JsonWriter.DROP_ROOT_MODE); 
    } 
}); 

作品你=）