我需要能够删除特定的父节点（及其子节点），具体取决于段落的子元素<version>中包含的属性。因此，在下面的示例中，我需要XSLT来查找<version version="ABCD">的实例，并从父<para0>元素中删除所有内容。换句话说，我正在尝试完成条件文本过滤。我需要匹配（和删除）的元素将始终是<applic>的父元素，但可能并不总是像示例中的<para0>，所以我需要以某种方式指定它需要匹配父元素'applic'元素而不是明确指定para0。
从示例中应该更清楚。我需要删除版本属性为ABCD的所有para0数据。
所以这是一些示例XML
<root>
<para0>
<applic>
<model>
<version version="ABCD"></version>
</model>
</applic>
<subpara1><title>First Title</title>
<para>Some text relating to ABCD configuration</para>
</subpara1>
<subpara1><title>Second Title</title>
<para>Some other text and stuff relating to ABCD configuration</para>
</subpara1>
</para0>
<para0>
<applic>
<model>
<version version="TRAINING"></version>
</model>
</applic>
<subpara1><title>First Title</title>
<para>Some text relating to TRAINING configuration</para>
</subpara1>
<subpara1><title>Second Title</title>
<para>Some other text and stuff relating to TRAINING configuration</para>
</subpara1>
</para0>
</root>
这是我到目前为止的XSLT，但是我需要它，一旦与ABCD匹配，基本上选择并删除'applic'的父级和所有子节点。
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method = "xml" indent="yes"/>
<xsl:strip-space elements = "*" />
<xsl:template match = "@*|node()" >
<xsl:copy>
<xsl:apply-templates select = "@*|node()" />
</xsl:copy>
</xsl:template>
<xsl:template match = "//applic/model[@*]/version[@version='ABCD']" />
</xsl:stylesheet>
答案 0 :(得分：0)
您的“删除”模板必须与您要删除的元素匹配 - 而不是其后代之一。
尝试：
XSLT 1.0
public void MapPoints(double SourceOne, double DestinationOne, double SourceTwo, double DestinationTwo){
//LatLng origin = points.get(0);
//LatLng dest = points.get(1);
double SourceOneDraw = SourceOne;
double DestinationOneDraw = DestinationOne;
double SourceTwoDraw = SourceTwo;
double DestinationTwoDraw = DestinationTwo;
LatLng origin = new LatLng(SourceOneDraw,DestinationOneDraw);
LatLng dest = new LatLng(SourceTwoDraw,DestinationTwoDraw);
// Getting URL to the Google Directions API
String url = getDirectionsUrl(origin, dest);
DownloadTask downloadTask = new DownloadTask();
// Start downloading json data from Google Directions API
downloadTask.execute(url);
}
private String getDirectionsUrl(LatLng origin,LatLng dest){
// Origin of route
String str_origin = "origin="+origin.latitude+","+origin.longitude;
// Destination of route
String str_dest = "destination="+dest.latitude+","+dest.longitude;
// Sensor enabled
String sensor = "sensor=false";
//Adding Alternative parameter
String alternative = "alternatives=true";
// Building the parameters to the web service
String parameters = str_origin+"&"+str_dest+"&"+sensor+"&"+alternative;
// Output format
String output = "json";
// Building the url to the web service
String url = "https://maps.googleapis.com/maps/api/directions/"+output+"?"+parameters;
return url;
}
//A method to download json data from url
private String downloadUrl(String strUrl) throws IOException{
String data = "";
InputStream iStream = null;
HttpURLConnection urlConnection = null;
try{
URL url = new URL(strUrl);
// Creating an http connection to communicate with url
urlConnection = (HttpURLConnection) url.openConnection();
// Connecting to url
urlConnection.connect();
// Reading data from url
iStream = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(iStream));
StringBuffer sb = new StringBuffer();
String line = "";
while( ( line = br.readLine()) != null){
sb.append(line);
}
data = sb.toString();
br.close();
}catch(Exception e){
//Log.d("Exception while downloading url", e.toString());
Toast.makeText(getApplicationContext(),"Error",Toast.LENGTH_LONG).show();
}finally{
iStream.close();
urlConnection.disconnect();
}
return data;
}
// Fetches data from url passed
private class DownloadTask extends AsyncTask<String, Void, String> {
// Downloading data in non-ui thread
@Override
protected String doInBackground(String... url) {
// For storing data from web service
String data = "";
try{
// Fetching the data from web service
data = downloadUrl(url[0]);
}catch(Exception e){
Log.d("Background Task",e.toString());
}
return data;
}
// Executes in UI thread, after the execution of
// doInBackground()
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
ParserTask parserTask = new ParserTask();
// Invokes the thread for parsing the JSON data
parserTask.execute(result);
}
}
// A class to parse the Google Places in JSON format
private class ParserTask extends AsyncTask<String, Integer, List<List<HashMap<String,String>>> >{
// Parsing the data in non-ui thread
@Override
protected List<List<HashMap<String, String>>> doInBackground(String... jsonData) {
JSONObject jObject;
List<List<HashMap<String, String>>> routes = null;
try{
jObject = new JSONObject(jsonData[0]);
DirectionsJSONParser parser = new DirectionsJSONParser();
// Starts parsing data
routes = parser.parse(jObject);
}catch(Exception e){
e.printStackTrace();
}
return routes;
}
// Executes in UI thread, after the parsing process
@Override
protected void onPostExecute(List<List<HashMap<String, String>>> result) {
ArrayList<LatLng> points = null;
PolylineOptions lineOptions = null;
MarkerOptions markerOptions = new MarkerOptions();
// Traversing through all the routes
for(int i=0;i<result.size();i++){
points = new ArrayList<LatLng>();
lineOptions = new PolylineOptions();
// Fetching i-th route
List<HashMap<String, String>> path = result.get(i);
// Fetching all the points in i-th route
for(int j=0;j<path.size();j++){
HashMap<String,String> point = path.get(j);
double lat = Double.parseDouble(point.get("lat"));
double lng = Double.parseDouble(point.get("lng"));
LatLng position = new LatLng(lat, lng);
points.add(position);
}
// Adding all the points in the route to LineOptions
lineOptions.addAll(points);
lineOptions.width(5);
lineOptions.color(Color.RED);
}
// Drawing polyline in the Google Map for the i-th route
mMap.addPolyline(lineOptions);
}
}