【List排除集合中的某些属性】

Set<String> exclusionSet = new HashSet<>();

exclusionSet.add(Constants.CLASS);

exclusionSet.add("taskJson");

List<TaskInstance> taskInstanceList = taskInstanceIPage.getRecords();

// 排除集合中的某些属性

CollectionUtils.getListByExclusion(taskInstanceList,exclusionSet);

 

 

/**

 * Removes certain attributes of each object in the list

 * @param originList origin list

 * @param exclusionSet exclusion set

 * @param <T> T

 * @return removes certain attributes of each object in the list

 */

public static <T extends Object> List<Map<String, Object>> getListByExclusion(List<T> originList, Set<String> exclusionSet) {

List<Map<String, Object>> instanceList = new ArrayList<>();

if (exclusionSet == null) {

exclusionSet = new HashSet<>();

}

if (originList == null) {

return instanceList;

}

Map<String, Object> instanceMap;

for (T instance : originList) {

Map<String, Object> dataMap = new BeanMap(instance);

instanceMap = new LinkedHashMap<>(16,0.75f,true);

for (Map.Entry<String, Object> entry: dataMap.entrySet()) {

if (exclusionSet.contains(entry.getKey())) {

continue;

}

instanceMap.put(entry.getKey(), entry.getValue());

}

instanceList.add(instanceMap);

}

return instanceList;

}

 

代码来自dolphinscheduler的CollectionUtils