Activiti系列：如何添加⾃定义表单引擎这个功能挺有意思的，有了它，就可以不适⽤html的⽅式来展⽰表单了，⽐如可以⽤swing对象了
class MyFormEngine implements FormEngine
{
@override
public String getName()
{ return "myformengine";}
@override
public Object renderStartForm(StartFormData startForm)
{
javax.swing.JButton jButton = new javax.swing.JButton();
jButton.tName("My Start Form Button");
return jButton;
}
@override
public override renderTaskForm(TaskFormData taskform)
{.....}
}
然后要在流程引擎中注册该表单引擎
<bean id ="processEngineConfiguration"
class = "xxxxx"
<property name="customFormEngine">
<list>
<bean class = "xxxxxx.MyFormEngine"/>
</list>
</property>
</bean>
