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List<String>转换为实体类的属性【转】

2016-06-14 08:57 405 查看
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) });
}
}

}
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