如何填充對象列表<String>使用Java的字符串值的成員變量反射

Question

我需要做的一個示例。

Field field=myBean.getClass().getDeclaredField("listOfStringMemberVar"); 
field.setAccessible(true); 
field.set(myBean, value); 
//value is a String. I want to add it to the listOfStringMemberVar 

如何通過反射填充字符串值的對象列表？ 感謝

Answer 1

field.set(myBean, Collections.singletonList("myvalue")); // for one element list 

// if list already exists and you just want to append your value 
List<String> theList = (List<String>)field.get(myBean); 
list.add("myvalue"); 

Answer 2

List<String> list = (List<String>)Field.get(myBean); 
list.add(value);