【发布时间】：2021-12-01 16:36:59
【问题描述】：
早安 StackOverflowers，
如果没有您的帮助，我无法解决另一个问题。我正在开发一个 C# 控制台应用程序 (.NET 5)，它调用不同的 Python 脚本来执行 ArcGis 内容 (=> "arcpy"-Lib :)。打电话给他们的方案总是一样的，从来没有问题。在渗透测试过程中，我发现其中一个脚本存在问题：
以下脚本“搜索”要素类中的每一行，放大到它并将其导出为 .png 文件。
通过 cmd（非管理员和管理员）或通过 Python Gui（可通过 ArcGis 设置获得）执行此操作，它可以完美运行（=> 创建 138 个图像），但是如果我通过 C# 应用程序执行它，它只会创建 36 个图像，之后，该过程继续运行但不创建图像。创建第 36 张图像后，CPU 使用率从 12% 下降到 0%。
第二个代码 sn-p 显示了被调用的方法，但也描述了调用我的 python 脚本的方案。我非常清楚这写得不好，我会在解决这个问题后做一些代码润色:)
希望有人给点小费。
提前非常感谢您。 亲切的问候， 一月
import arcpy,os, logging
logging.basicConfig(filename='appPython.log', format='%(asctime)s - %(message)s', level=logging.INFO)
#Static Variables
mxdfileName = "D:\DigitalesFahrtenbuch_Datenpunkte\Templates\TemplateTelematik.mxd"
# Set the workspace for ListFeatureClasses
arcpy.env.workspace = str(sys.argv[1])
#arcpy.env.workspace = r"D:\DigitalesFahrtenbuch_Datenpunkte\DigFahrtenbuch_Datenpunkte.gdb"
featureclasses = arcpy.ListFeatureClasses()
try:
# Copy shapefiles to a file geodatabase
for fc in featureclasses:
featureName = os.path.splitext(fc)[0]
if "Dienstverrichtung_" in featureName and "_Projection" in featureName:
print(featureName)
#Global Variables
mxd = arcpy.mapping.MapDocument(mxdfileName)
df = arcpy.mapping.ListDataFrames(mxd,"*")[0]
#Create FeatureLayer
SelectionLayer = arcpy.management.MakeFeatureLayer(fc, "SelectionLayer").getOutput(0)
#Add Layer to mxd
arcpy.mapping.AddLayer(df, SelectionLayer, "TOP")
#Refresh TOC and DataFrames
arcpy.RefreshActiveView()
arcpy.RefreshTOC()
df = arcpy.mapping.ListDataFrames(mxd,"*")[0]
#Refresh TOC and DataFrames
arcpy.RefreshActiveView()
arcpy.RefreshTOC()
df = arcpy.mapping.ListDataFrames(mxd,"*")[0]
feature = arcpy.mapping.ListLayers(mxd, SelectionLayer, df)[0]
fields = ['OID@', 'SHAPE@', 'Name']
pngPath = r"D:\DigitalesFahrtenbuch_Datenpunkte\Images"
with arcpy.da.SearchCursor(feature, fields) as cursor:
for FID, Geometry, Name in cursor:
mxd.title = Name
print("{} in Bearbeitung.".format(mxd.title))
query = "ObjectID = {}".format(str(FID))
arcpy.management.SelectLayerByAttribute(feature, "NEW_SELECTION", query)
df.zoomToSelectedFeatures()
df.scale=2500
df.referenceScale = 3500
arcpy.RefreshActiveView()
png = "{}\\{}.png".format(pngPath, Name)
arcpy.mapping.ExportToPNG(mxd, png, df, df_export_width=2200, df_export_height=1300)
print("{} erfolgreich exportiert.".format(mxd.title))
print("Script beendet")
except Exception as e:
logging.error("Exception occurred", exc_info = True)
public static async Task<Tuple<string, bool>> ZoomToSelectedFeatures(string pPathToPythonExe, string pPathGeoDatabase)
{
Tuple<string, bool> resultTuple = null;
StringBuilder scriptMessageBuilder = new StringBuilder();
string scriptExceptions = string.Empty;
string scriptPrints = string.Empty;
string pythonPath = @"C:/Python27/ArcGIS10.8/python.exe";
try
{
await Task.Run(delegate
{
if (pPathToPythonExe != "")
{
pythonPath = pPathToPythonExe;
}
ProcessStartInfo start = new ProcessStartInfo();
//python interprater location
start.FileName = pythonPath;
//argument with file name and input parameters
start.Arguments =
$"{Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Python_Scripts\\Batch_ZoomToSelectedFeaturesAndExportPNG_2.py")}" +
$" {pPathGeoDatabase}";
start.UseShellExecute = false; // Do not use OS shell
start.CreateNoWindow = true; // We don't need new window
start.RedirectStandardOutput = true; // Any output, generated by application will be redirected back
start.RedirectStandardError = true; // Any error in standard output will be redirected back (for example exceptions)
start.LoadUserProfile = true;
using (Process process = Process.Start(start))
{
process.WaitForExit();
using (StreamReader reader = process.StandardOutput)
{
scriptExceptions = process.StandardError.ReadToEnd(); // Here are the exceptions from our Python script
scriptPrints = reader.ReadToEnd(); // Here is the result of StdOut(for example: print "test")
Debug.WriteLine("Batch_ZoomToSelectedFeaturesAndExportPNG_2.py meldet:");
Debug.WriteLine(scriptPrints);
Debug.WriteLine(scriptExceptions);
scriptMessageBuilder.AppendLine(scriptPrints);
scriptMessageBuilder.AppendLine(scriptExceptions);
}
}
resultTuple = new Tuple<string, bool>(scriptMessageBuilder.ToString(), true);
});
}
catch (Exception e)
{
Debug.WriteLine(e);
Debug.WriteLine(scriptExceptions);
resultTuple = new Tuple<string, bool>(scriptMessageBuilder.ToString(), false);
}
return resultTuple;
}
【问题讨论】：