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Possible Duplicate:
How to convert a Java object (bean) to key-value pairs (and vice versa)?
转换 List<POJO> to a List<Map<K,V>>. 的最佳方法是什么？
是否有自定义方法/API？
K = POJO的字段名，V是对应的值
public class POJO implements Serializable{
String name;
String age;
//getters and setters
}
最佳答案
听起来像是适合老年人的工作Introspector .
工作示例:
// Don't be lazy like this, do something about the exceptions
public static void main(String[] args) throws Exception {
List<POJO> pojos = new ArrayList<POJO>();
POJO p1 = new POJO();
p1.setAge("20");
p1.setName("Name");
pojos.add(p1);
POJO p2 = new POJO();
// ...
System.out.println(convertCollection(pojos));
}
public static List<Map<String, ?>> convertCollection(Collection collection)
throws Exception {
List<Map<String, ?>> list = new ArrayList<Map<String, ?>>();
for (Object element : collection) {
list.add(getValues(element));
}
return list;
}
public static Map<String, ?> getValues(Object o)
throws Exception {
Map<String, Object> values = new HashMap<String, Object>();
BeanInfo info = Introspector.getBeanInfo(o.getClass());
for (PropertyDescriptor pd : info.getPropertyDescriptors()) {
// This will access public properties through getters
Method getter = pd.getReadMethod();
if (getter != null)
values.put(pd.getName(), getter.invoke(o));
}
return values;
}
关于java - 将 POJO 转换为 <K,V> 映射，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6075385/