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894天前package model; |
import java.lang.reflect.Field; |
import java.lang.reflect.Method; |
import java.util.ArrayList; |
import java.util.List; |
public class ListToModel { |
public static void main(String[] args) { |
List<Object> userList = new ArrayList<Object>(); |
userList.add("ooP"); |
userList.add("男"); |
userList.add(18); |
User user = new User(); |
try { |
listToModel(userList, user); |
} catch (Exception e) { |
e.printStackTrace(); |
} |
System.out.println(user.getName() + "; " + user.getGender() + "; " + user.getAge()); |
} |
public static <T> void listToModel(List<Object> list, T t) throws Exception { |
Field[] fields = t.getClass().getDeclaredFields(); |
if (list.size() != fields.length) { |
return; |
} |
for (int k = 0, len = fields.length; k < len; k++) { |
// 根据属性名称,找寻合适的set方法 |
String fieldName = fields[k].getName(); |
String setMethodName = "set" + fieldName.substring(0, 1).toUpperCase() |
+ fieldName.substring(1); |
Method method = null; |
Class<?> clazz = t.getClass(); |
try { |
method = clazz.getMethod(setMethodName, new Class[] { list.get(k).getClass() }); |
} catch (SecurityException e1) { |
e1.printStackTrace(); |
return; |
} catch (NoSuchMethodException e1) { |
String newMethodName = "set" + fieldName.substring(0, 1).toLowerCase() |
+ fieldName.substring(1); |
try { |
method = clazz.getMethod(newMethodName, new Class[] { list.get(k).getClass() }); |
} catch (SecurityException e) { |
e.printStackTrace(); |
return; |
} catch (NoSuchMethodException e) { |
e.printStackTrace(); |
return; |
} |
} |
if (method == null) { |
return; |
} |
method.invoke(t, new Object[] { list.get(k) }); |
} |
} |
} |
