17 servicetask of flowable task

1 Service tasks ServiceTask

Service tasks can be triggered automatically , It can also be triggered passively by setting parameters . The main function of a service task can be to set a processing class or a listening class to operate the corresponding business logic . The core processing classes can be implemented through Class Type（class class ）,Expression（ expression ）,Delegate Expression（ Proxy expression ） There are three ways to set .

1.1 Prepare the following flow chart ：

1.2 The details of the XML The contents are as follows ：

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://ww