好心人帮帮忙！怎样用extjs技术 把xml格式的字符串变成树

Question

xml格式的字符串：
<Message>
  <NodeCount>4</NodeCount>
  <NodeInfo>
    <NodeCode>16777216</NodeCode>
    <ParentNodeCode>1</ParentNodeCode>
    <NodeType>1</NodeType>
    <NodeName>梅州市</NodeName>
    <DevAddress></DevAddress>
    <ChannelCount>0</ChannelCount>
    <ChannelNum>0</ChannelNum>
    <ChannelName></ChannelName>
    <Online>0</Online>
  </NodeInfo>
  <NodeInfo>
    <NodeCode>1</NodeCode>
    <ParentNodeCode>16777216</ParentNodeCode>
    <NodeType>5</NodeType>
    <NodeName>东湖电排站</NodeName>
    <DevAddress>00000000000000020000</DevAddress>
    <ChannelCount>2</ChannelCount>
    <ChannelNum>0</ChannelNum>
    <ChannelName></ChannelName>
    <Online>1</Online>
  </NodeInfo>
  <NodeInfo>
    <NodeCode>1</NodeCode>
    <ParentNodeCode>16777216</ParentNodeCode>
    <NodeType>5</NodeType>
    <NodeName>东湖电排站</NodeName>
    <DevAddress>00000000000000020000</DevAddress>
    <ChannelCount>2</ChannelCount>
    <ChannelNum>1</ChannelNum>
    <ChannelName>东湖电排站内</ChannelName>
    <Online>1</Online>
  </NodeInfo>
  <NodeInfo>
    <NodeCode>1</NodeCode>
    <ParentNodeCode>16777216</ParentNodeCode>
    <NodeType>5</NodeType>
    <NodeName>东湖电排站</NodeName>
    <DevAddress>00000000000000020000</DevAddress>
    <ChannelCount>2</ChannelCount>
    <ChannelNum>2</ChannelNum>
    <ChannelName>东湖电排站外</ChannelName>
    <Online>1</Online>
  </NodeInfo>
</Message>变成下面的树梅州市
    --东湖电排站
        --东湖电排站内
        --东湖电排站外

Answer 1

web版的treeview 不是可以直接指定数据源么？XmlDataSource

Answer 2

XmlDataSource中选择xml文件，然后设置Xpath为//NodeName,
然后点击treeview设置 编辑TreeNode数据绑定，选择TextField为：#InnerText