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嗨:我正在使用 BeanUtil 获取一些 bean 的属性,然后将它们放到映射中。但是我发现getProperty()只能返回字符串值,不知道它是否可以返回本机​​(原始)类型?

例如:

豆:

public class Entity {
 private String  name;
 private int   age;
 private List<Date> childs = new ArrayList<Date>();

 public Entity(String name, int age, List<Date> childs) {
  this.name = name;
  this.age = age;
  this.childs = childs;
 }

 public static Entity newInstance() {
  List<Date> list = new ArrayList<Date>();
  list.add(new Date());
  list.add(new Date());
  return new Entity("Beanutil", 23, list);
 }
 //the getter and setter for all the fields
}

Then I want to get some field property of it,and I do not exactly know which fields are requried,so I use it this way:

public class BeanUtilMain {
 public static void main(String[] args){
  String[] requestPro={"name","childs"}; //this field is specified by clien
  Map<String, Object> map=new HashMap<String, Object>();
  Entity en=Entity.newInstance();
  for(String p:requestPro){
   map.put(p, BeanUtils.getProperty(en, p));
  }
  System.out.println(map);
 }
}

那么地图是:

{name=beanutil, childs=Wed Dec 01 12:24:37 CST 2010}

“childs”字段的类型是java.util.List,但在示例中,它被转换为java.lang.String。

我必须保留地图中字段的原始类型。

有任何想法吗?

4

1 回答 1

3

您可以使用PropertyUtils.getProperty(Object, String)它来完成此任务。它返回没有类型转换的字段的值。

于 2011-03-10T18:56:22.453 回答