public static <T> List<Map<String, Object>> objectList2ListMap(List<T> objectList) throws Exception { ArrayList<Map<String, Object>> resultList = new ArrayList<>(); Map<String, Object> map = new HashMap<>(); for (T t : objectList) { resultList.add(object2Map(t)); } return re...
将List<Map<String, Object>>转换为List<Map<String, String>>可以通过遍历原始列表,逐个处理每个Map对象的值,并将其转换为String类型。下面是一个示例代码: 代码语言:txt 复制 import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class...
String format=null;for(Map<String, Object>map : listMap) {for(Map.Entry<String, Object>stringObjectEntry : map.entrySet()) {if(stringObjectEntry.getValue()instanceofLong) { format=simpleDateFormat.format(stringObjectEntry.getValue()); map.put(stringObjectEntry.getKey(), format); } } } ...
使用Stream API,我们可以使用map()方法将一个对象转化成一个Map对象。以下是一个使用Stream API转化List<对象>到List<Map>的示例代码: List<对象>list=getListFromDatabase();// 从数据库中获取List<对象>List<Map<String,Object>>result=list.stream().map(obj->{Map<String,Object>map=newHashMap<>();map...
publicstaticList<Map<String,Object>>toListMap(List<User>userList){List<Map<String,Object>>result=newArrayList<>();Map<String,Object>map;for(User user:userList){map=newHashMap<>();map.put("username",user.getUsername());map.put("age",user.getAge());map.put("gender",user.getGender()...
*/publicstaticList<Object>ListMapToListBean(List<Map<String,Object>>listm,Object obj)throws NoSuchMethodException,SecurityException,IllegalAccessException,IllegalArgumentException,InvocationTargetException{List<Object>list=newArrayList<Object>();// 循环遍历出map对象for(Map<String,Object>m:listm){// 调用将...
List<Map<String, Object>>转List<T> 传入需要转换的clazz Map的值Object转换为T的Field对应类型 /** * List<Map<String, Object>> 到 List<T> 数据转换 */ public static <T> List<T> setList(List<Map<String, Object>> srcList, Class<T> clazz) { ...
* @param map存储着名称和值集合 * @param obj要封装的对象 * @return封装好的对象 */ public Object addProperty(Map map,Object obj){ //遍历所有名称 Iterator it = map.keySet().iterator(); while(it.hasNext()){ //取得名称 String name = it.next().toString(); ...
Map<String,Object> map1 = new HashMap<String,Object>(); map1.put("test1", "aa"); map1.put("test2", "bb"); map1.put("test3", 1); map1.put("test4", 2); map1.put("test5", "1"); map1.put("test6", "2"); mapList.add(map1); Map<String,Object> map...