JAVA 实体类List<Entity >转 List<Map>

  • Z时代
  • 2024-01-10
  • 分类：综合

java

public static <T extends IdEntity> List<Map<Object,Object>> EntityConvertMap(List<T> list){
   List<Map<Object,Object>> l = new LinkedList<>();
   try {
      for(T t : list){
         Map<Object,Object> map = new HashMap<>();
         Method[] methods = t.getClass().getMethods();
         for (Method method : methods) {
            if (method.getName().startsWith("get")) {
               String name = method.getName().substring(3);
               name = name.substring(0, 1).toLowerCase() + name.substring(1);
               Object value = method.invoke(t);
               if(method.getGenericReturnType().toString().equals("class java.util.Date")&&value!=null){
                  value = getNow((Date)value, "yyyy-MM-dd HH:mm:ss");
               }
               map.put(name,value);
            }
         }
         l.add(map);
      }
   } catch (Exception e) {
      e.printStackTrace();
   }
   return l;
}

2.//list实体类转换成map
public static  List<Map<String,Object>> EntityConvertMap(List<Dept> list){
   List<Map<String,Object>> l = new LinkedList<>();
   try {
      for(Dept t : list){
         Map<String,Object> map = new HashMap<>();
         Method[] methods = t.getClass().getMethods();
         for (Method method : methods) {
            if (method.getName().startsWith("get")) {
               String name = method.getName().substring(3);
               name = name.substring(0, 1).toLowerCase() + name.substring(1);
               Object value = method.invoke(t);
               map.put(name,value);
            }
         }
         l.add(map);
      }
   } catch (Exception e) {
      e.printStackTrace();
   }
   return l;
}

 

 

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