WorkflowExecutionStepError

描述

如果工作流步骤在执行过程中出错，则会发生 WorkflowExecutionStepError 异常。

讨论

如果工作流步骤无法执行，则会发生 WorkflowExecutionStepError 异常。例如，如果试图执行不支持的步骤，如 DefineAOI、EditExtendedProperties, LaunchArcMap、LaunchGP, OpenMap 和 SelectDataWorkspace，则会产生错误。

代码示例

在下面的异常处理方法中，WorkflowExecutionStepError 异常用于处理试图执行工作流中的步骤时产生的所有错误。

import arcpy, sys, traceback

#Define the callback response function. In this case it will prompt the user using the console to respond.
def callback(question, responses):

    # Print out the expected responses
    for resp in responses:
        print("[%i] %s" % (resp[1], resp[0]))
		
    # Prompt the user to respond
    val = int(input("%s - %s: " % (question[1], question[0])))
	
    # Return their response. Currently only returning the value, but could also return a note (for questions) and the name of the response
    return (val, "", "")

#Establish a connection to a Workflow database
conn = arcpy.wmx.Connect(r'c:\test\Workflow.jtc')

#Get a Job for Execution
job = conn.getJob(77601)

try:
	#Execute the current Step in the workflow
	result = job.executeStep(callback=callback)
    
	print ("Executing the first step returned %i" % result.returnCode)
	
	#Run the next Step in the workflow
        result = job.executeStep(callback=callback) 
    
	#Mark the step as complete
	job.markStepAsComplete(callback=callback) 

#Raised when a step in the workflow encounters an execution error	
except wmx.WorkflowExecutionStepError as e:
    print ("Step failed to execute:")
    print("-"*60)
    traceback.print_exc()
	
#Raised when a workflow encounters an execution error
except wmx.WorkflowExecutionError as f:
    print ("Workflow failed to execute:")
    print("-"*60)
    traceback.print_exc()