1 public abstract class ConsumeHandler {
 2     private ConsumeHandler nextHandler;
 3
 4     public ConsumeHandler getNextHandler(){
 5         return nextHandler;
 6     }
 7
 8     public void setNextHandler(ConsumeHandler nextHandler){
 9         this.nextHandler=nextHandler;
10     }
11
12     /**
13      * user申请人  free报销费用
14      */
15     public abstract void doHandler(String user,double free);
16 }
17
18 //项目经理
19 public class ProjectHandler extends ConsumeHandler {
20     @Override
21     public void doHandler(String user, double free) {
22         if (free < 500){
23             if (user.equals("lwx")){
24                 System.out.print("给予报销："+free);
25             }else{
26                 System.out.print("报销不通过");
27             }
28         }else{
29             if (getNextHandler()!=null){
30                 getNextHandler().doHandler(user,free);
31             }
32         }
33     }
34 }
35
36 //部门经理
37 public class DeptHandler extends ConsumeHandler {
38     @Override
39     public void doHandler(String user, double free) {
40         if (free<1000){
41             if (user.equals("zy")){
42                 System.out.print("给予报销:"+free);
43             }else{
44                 System.out.println("报销不通过");
45             }
46         }else{
47             if (getNextHandler()!=null){
48                 getNextHandler().doHandler(user,free);
49             }
50         }
51     }
52 }
53
54 //总经理
55 public class GeneralHandler extends ConsumeHandler {
56     @Override
57     public void doHandler(String user, double free) {
58         if (free>=1000){
59             if (user.equals("lwxzy")) {
60                 System.out.println("给予报销:" + free);
61             } else {
62                 System.out.println("报销不通过");
63             }
64         }else{
65             if (getNextHandler()!=null){
66                 getNextHandler().doHandler(user,free);
67             }
68         }
69     }
70 }
71
72 public class ChainOfResponsibilityActivity extends AppCompatActivity {
73
74     @Override
75     protected void onCreate(Bundle savedInstanceState) {
76         super.onCreate(savedInstanceState);
77         setContentView(R.layout.activity_chain_of_responsibility);
78
79         ProjectHandler projectHandler=new ProjectHandler();
80         DeptHandler deptHandler=new DeptHandler();
81         GeneralHandler generalHandler=new GeneralHandler();
82
83         projectHandler.setNextHandler(deptHandler);
84         deptHandler.setNextHandler(generalHandler);
85
86         projectHandler.doHandler("lwx",450);
87         projectHandler.doHandler("lwx", 600);
88         projectHandler.doHandler("zy", 600);
89         projectHandler.doHandler("zy", 1500);
90         projectHandler.doHandler("lwxzy", 1500);
91     }
92 }