xml格式的流输出GEPHI-TOOLKIT

Question

我正在使用gephi-toolkit编写java函数，它应该生成gefx格式的图形数据，作为输出流，而不是文件，以供进一步使用。

如果我使用CharArrayWriter或StringWriter - 所有xml标签都被格式化为特殊符号，我的输出如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<gexf xmlns="http://www.gexf.net/1.2draft" version="1.2" xmlns:viz="http://www.gexf.net/1.2draft/viz" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.gexf.net/1.2draft http://www.gexf.net/1.2draft/gexf.xsd">
  <meta lastmodifieddate="2016-03-24">
    <creator>Gephi 0.8.1</creator>
    <description></description>
  </meta>
  <graph defaultedgetype="directed" mode="static">
    <nodes>
      <node id="1" label="n0">
        <attvalues></attvalues>
        <viz:size value="10.0"></viz:size>
        <viz:position x="-206.8857" y="-18.469671" z="0.0"></viz:position>
        <viz:color r="153" g="153" b="153"></viz:color>
      </node>
      <node id="2" label="n1">
        <attvalues></attvalues>
        <viz:size value="10.0"></viz:size>
        <viz:position x="-29.136229" y="80.29351" z="0.0"></viz:position>
        <viz:color r="153" g="153" b="153"></viz:color>

我应该使用什么来在输出端获取xml-streamamed数据？

当前代码：

//Export 
ExportController ec = Lookup.getDefault().lookup(ExportController.class); 

ExporterGEXF exp = (ExporterGEXF) ec.getExporter("gexf");  
CharArrayWriter writer = new CharArrayWriter(); 

ec.exportWriter(writer, exp); 
return writer;

Answer 1

这个答案很有帮助： how to convert array byte to org.w3c.dom.Document

感谢harun！

工作代码是：

 StringWriter strwriter = new StringWriter();



        ec.exportWriter(strwriter, (CharacterExporter)exp);

        String str = strwriter.getBuffer().toString();



        byte[] arr = str.getBytes("UTF-8");

          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);
    DocumentBuilder builder = factory.newDocumentBuilder();
    return builder.parse(new ByteArrayInputStream(arr));