工作流中的请假流程
某人提出请假申请，先由项目经理审批，如果项目经理不同意，审批就直接结束如项目经理同意，再看是否超过3天，如果三天以内，审批直接结束否则，交给部门经理，部门经理审核后，无论是否同意，审批直接结束
状态类
| 1 2 3 4 5 | package com.cmc; public abstract class State { public abstract void shenPi(Work w); } |
项目经理类，继承了状态类，并实现了状态由项目经理审批转移至部门经理审批：
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | package com.cmc; public class ProjectManager extends State { @Override public void shenPi(Work w) { if (w.isManagermentAccept()== false ){ System.out.println( "项目经理不同意，审批结束！" ); } else { if (w.getDay()<= 3 ){ System.out.println( "请假时间在三天以内，项目经理同意，审批结束" ); } else { System.out.println( "请假时间大于三天，移交给部门经理处理！" ); w.setCurrent( new PartmentMeneger()); w.shenPi(); } } } } |
部门经理类：
| 1 2 3 4 5 6 7 8 9 10 | package com.cmc; public class PartmentMeneger extends State { @Override public void shenPi(Work w) { System.out.println( "已经过部门经理审批，审批结束！" ); } } |
工作类，拥有一个State的对象，在shenPi方法中将自己回传给State：
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | package com.cmc; public class Work { private State current; private int day; private boolean isManagermentAccept; public Work() { current = new ProjectManager(); } public State getCurrent() { return current; } public void setCurrent(State current) { this .current = current; } public int getDay() { return day; } public void setDay( int day) { this .day = day; } public boolean isManagermentAccept() { return isManagermentAccept; } public void setManagermentAccept( boolean isManagermentAccept) { this .isManagermentAccept = isManagermentAccept; } public void shenPi(){ current.shenPi( this ); } } |
客户端测试一下：
| 1 2 3 4 5 6 7 8 9 10 | package com.cmc; public class Client { public static void main(String [] args){ Work w = new Work(); w.setDay( 4 ); w.setManagermentAccept( true ); w.shenPi(); } } |