| 提交 | 用户 | 时间 | ||
| 149dd0 | 1 | package com.iailab.netsdk.common; |
| H | 2 | |
| 3 | import java.lang.reflect.Method; | |
| 4 | import java.util.NoSuchElementException; | |
| 5 | import java.util.Scanner; | |
| 6 | import java.util.Vector; | |
| 7 | ||
| 8 | public class CaseMenu { | |
| 9 | ||
| 10 | public static class Item { | |
| 11 | private Object object; | |
| 12 | private String itemName; | |
| 13 | private String methodName; | |
| 14 | ||
| 15 | public Item(Object object, String itemName, String methodName) { | |
| 16 | super(); | |
| 17 | this.object = object; | |
| 18 | this.itemName = itemName; | |
| 19 | this.methodName = methodName; | |
| 20 | } | |
| 21 | ||
| 22 | public Object getObject() { | |
| 23 | return object; | |
| 24 | } | |
| 25 | ||
| 26 | public String getItemName() { | |
| 27 | return itemName; | |
| 28 | } | |
| 29 | ||
| 30 | public String getMethodName() { | |
| 31 | return methodName; | |
| 32 | } | |
| 33 | } | |
| 34 | ||
| 35 | private Vector<Item> items; | |
| 36 | ||
| 37 | public CaseMenu() { | |
| 38 | super(); | |
| 39 | items = new Vector<Item>(); | |
| 40 | } | |
| 41 | ||
| 42 | public void addItem(Item item) { | |
| 43 | items.add(item); | |
| 44 | } | |
| 45 | ||
| 46 | private void showItem() { | |
| 47 | final String format = "%2d\t%-20s\n"; | |
| 48 | int index = 0; | |
| 49 | System.out.printf(format, index++, "exit App"); | |
| 50 | for (Item item : items) { | |
| 51 | System.out.printf(format, index++, item.getItemName()); | |
| 52 | } | |
| 53 | System.out.println("Please input a item index to invoke the method:"); | |
| 54 | } | |
| 55 | ||
| 56 | public void run() { | |
| 57 | Scanner scanner = new Scanner(System.in); | |
| 58 | while(true) { | |
| 59 | showItem(); | |
| 60 | try { | |
| 61 | int input = Integer.parseInt(scanner.nextLine()); | |
| 62 | ||
| 63 | if (input <= 0 ) { | |
| 64 | System.err.println("input <= 0 || scanner.nextLine() == null"); | |
| 65 | // scanner.close(); | |
| 66 | // System.exit(0); | |
| 67 | break; | |
| 68 | } | |
| 69 | ||
| 70 | if (input < 0 || input > items.size()) { | |
| 71 | System.err.println("Input Error Item Index."); | |
| 72 | continue; | |
| 73 | } | |
| 74 | ||
| 75 | Item item = items.get(input - 1); | |
| 76 | Class<?> itemClass = item.getObject().getClass(); | |
| 77 | Method method = itemClass.getMethod(item.getMethodName()); | |
| 78 | method.invoke(item.getObject()); | |
| 79 | } catch (NoSuchElementException e) { | |
| 80 | // scanner.close(); | |
| 81 | // System.exit(0); | |
| 82 | break; | |
| 83 | } catch (NumberFormatException e) { | |
| 84 | System.err.println("Input Error NumberFormat."); | |
| 85 | continue; | |
| 86 | } catch (Exception e) { | |
| 87 | e.printStackTrace(); | |
| 88 | } | |
| 89 | } | |
| 90 | ||
| 91 | scanner.close(); | |
| 92 | } | |
| 93 | } | |
