1 /**
2 * 比较两个实体属性值，返回一个map以有差异的属性名为key，value为一个Map分别存oldObject,newObject此属性名的值
3 *
4 * @param oldObject 进行属性比较的对象1
5 * @param newObject 进行属性比较的对象2
6 * @return 属性差异比较结果map
7 */
8 @SuppressWarnings("rawtypes")
9 public static Map<String, Map<String, BigDecimal>> compareFields(Object oldObject, Object newObject) {
10 Map<String, Map<String, BigDecimal>> map = null;
11 try {
12 /**
13 * 只有两个对象都是同一类型的才有可比性
14 */
15 if (oldObject.getClass() == newObject.getClass()) {
16 map = new HashMap<String, Map<String, BigDecimal>>();
17 Class clazz = oldObject.getClass();
18 //获取object的所有属性
19 PropertyDescriptor[] pds = Introspector.getBeanInfo(clazz, Object.class).getPropertyDescriptors();
20 for (PropertyDescriptor pd : pds) {
21 //遍历获取属性名
22 String name = pd.getName();
23 //获取属性的get方法
24 Method readMethod = pd.getReadMethod();
25 // 在oldObject上调用get方法等同于获得oldObject的属性值
26 Object oldValue = readMethod.invoke(oldObject);
27 // 在newObject上调用get方法等同于获得newObject的属性值
28 Object newValue = readMethod.invoke(newObject);
29 if (oldValue instanceof List) {
30 continue;
31 }
32 if (newValue instanceof List) {
33 continue;
34 }
35 if (oldValue instanceof Timestamp) {
36 oldValue = new Date(((Timestamp) oldValue).getTime());
37 }
38 if (newValue instanceof Timestamp) {
39 newValue = new Date(((Timestamp) newValue).getTime());
40 }
41 if (newValue == null) {
42 continue;
43 }
44 if (oldValue == null && newValue == null) {
45 continue;
46 } else if (oldValue == null && newValue != null) {
47 Map<String, BigDecimal> valueMap = new HashMap<>();
48 if (oldValue == null) {
49 valueMap.put(StockPredictConstants.PROFIT_OLD_VALUE, null);
50 } else {
51 valueMap.put(StockPredictConstants.PROFIT_OLD_VALUE, new BigDecimal(oldValue.toString()));
52 }
53 if (newValue == null) {
54 valueMap.put(StockPredictConstants.PROFIT_NEW_VALUE, null);
55 } else {
56 valueMap.put(StockPredictConstants.PROFIT_NEW_VALUE, new BigDecimal(newValue.toString()));
57 }
58 map.put(name, valueMap);
59 continue;
60 }
61 BigDecimal oldBigDecimal = null;
62 BigDecimal newBigDecimal = null;
63 if (oldValue == null) {
64 oldBigDecimal = null;
65 } else {
66 oldBigDecimal = new BigDecimal(oldValue.toString());
67 }
68 if (newValue == null) {
69 newBigDecimal = null;
70 } else {
71 newBigDecimal = new BigDecimal(newalue.toString());
72 }
73 // 比较这两个值是否相等,不等就可以放入map了
74 if (oldBigDecimal.compareTo(newBigDecimal) != 0) {
75 Map<String, BigDecimal> valueMap = new HashMap<>();
76 valueMap.put(StockPredictConstants.PROFIT_OLD_VALUE, oldBigDecimal);
77 valueMap.put(StockPredictConstants.PROFIT_NEW_VALUE, newBigDecimal);
78 map.put(name, valueMap);
79 }
80 }
81 }
82 } catch (Exception e) {
83 LOGGER.error("比较两个实体属性值比较两个实体属性值出错", e);
84 }
85 return map;
86 }
