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04-actionlib入门-新建action client

04-actionlib入门-新建action client

作者: joey_zhou | 来源:发表于2016-12-12 12:07 被阅读73次

    代码可在 actionlib_tutorials 软件包中可见,可以以先阅读 actionlib 软件包再开始教程。

    代码

    下面的代码在actionlib_tutorials/simple_action_client/fibonacci_client.py中:

    #! /usr/bin/env python
    # -*- coding: utf-8 -*-
    import roslib; roslib.load_manifest('actionlib_tutorials')
    import rospy
    
    # Brings in the SimpleActionClient
    import actionlib
    
    # Brings in the messages used by the fibonacci action, including the
    # goal message and the result message.
    import actionlib_tutorials.msg
    
    def fibonacci_client():
        # Creates the SimpleActionClient, passing the type of the action
        # (FibonacciAction) to the constructor.
        client = actionlib.SimpleActionClient('fibonacci', actionlib_tutorials.msg.FibonacciAction)
    
        # Waits until the action server has started up and started
        # listening for goals.
        client.wait_for_server()
    
        # Creates a goal to send to the action server.
        goal = actionlib_tutorials.msg.FibonacciGoal(order=20)
    
        # Sends the goal to the action server.
        client.send_goal(goal)
    
        # Waits for the server to finish performing the action.
        client.wait_for_result()
    
        # Prints out the result of executing the action
        return client.get_result()  # A FibonacciResult
    
    if __name__ == '__main__':
        try:
            # Initializes a rospy node so that the SimpleActionClient can
            # publish and subscribe over ROS.
            rospy.init_node('fibonacci_client_py')
            result = fibonacci_client()
            print "Result:", ', '.join([str(n) for n in result.sequence])
        except rospy.ROSInterruptException:
            print "program interrupted before completion"
    

    运行客户端程序

    $ roscore
    $ rosmake actionlib_tutorials
    $ rosrun actionlib_tutorials fibonacci_server
    $ rosrun actionlib_tutorials fibonacci_client.py

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