@SuppressWarnings("all")
public class BeanDifferentUtils {
private BeanDifferentUtils() {
//do nothing
}
/**
* @param source
* @param target
* @param collectionComplement 如果是数组字段,那么先算并集然后去掉并集
* @return
* @throws IntrospectionException
* @throws InvocationTargetException
* @throws IllegalAccessException
*/
public static JSONObject diffField(Object source, Object target, boolean collectionComplement) throws IntrospectionException, InvocationTargetException, IllegalAccessException {
JSONObject diff = new JSONObject();
Assert.notNull(source, "Source must not be null");
Assert.notNull(target, "Target must not be null");
if (source.getClass() != target.getClass()) {
throw new IllegalArgumentException("Source object and target object are not of the same type");
}
Class<?> compareObj = source.getClass();
Field[] fields = compareObj.getDeclaredFields();
for (Field field : fields) {
PropertyDescriptor pd = new PropertyDescriptor(field.getName(), compareObj);
Method getMethod = pd.getReadMethod();
Object o1 = getMethod.invoke(source);
Object o2 = getMethod.invoke(target);
if (o1 instanceof Collection && o2 instanceof Collection) {
boolean equals = deepEquals(o1, o2);
if (!equals) {
if (collectionComplement) {
Collection<Object> beMixed = (Collection<Object>) getBeMixed(o1, o2);
diff.put(field.getName(), Different.getInstance(((Collection) o1).removeAll(beMixed), ((Collection) o2).removeAll(beMixed)));
} else {
diff.put(field.getName(), Different.getInstance(o1, o2));
}
}
}
boolean deepEquals = deepEquals(o1, o2);
if (!deepEquals) {
diff.put(field.getName(), Different.getInstance(o1, o2));
}
}
return diff;
}
private static boolean deepEquals(Object source, Object target) {
if (source instanceof Collection && target instanceof Collection) {
return Objects.deepEquals(((Collection) source).toArray(), ((Collection) target).toArray());
}
return Objects.deepEquals(source, target);
}
private static Object getBeMixed(Object source, Object target) {
Collection<Object> sourceCollection = (Collection<Object>) source;
Collection<Object> targetCollection = (Collection<Object>) target;
return sourceCollection.stream().filter(targetCollection::contains).collect(Collectors.toList());
}
@Data
static class Different {
private Object source;
private Object target;
public static Different getInstance(Object source, Object target) {
Different different = new Different();
different.source = source;
different.target = target;
return different;
}
}
原文地址:http://www.cnblogs.com/lyuSky/p/16912340.html
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