package com.example.demo.utils;
import java.lang.reflect.Method;
import java.util.List;
import com.example.demo.domain.Users;
import com.example.demo.model.UsersModel;
public class Dto2Entity {
/**
*
* 将dto和entity之间的属性互相转换,dto中属性一般为String等基本类型,
*
* 但是entity中可能有复合主键等复杂类型,需要注意同名问题
*
* @param src
*
* @param target
*/
public static Object populate(Object src, Object target) {
Method[] srcMethods = src.getClass().getMethods();
Method[] targetMethods = target.getClass().getMethods();
for (Method m : srcMethods) {
String srcName = m.getName();
if (srcName.startsWith("get")) {
try {
Object result = m.invoke(src);
for (Method mm : targetMethods) {
String targetName = mm.getName();
if (targetName.startsWith("set")
&& targetName.substring(3, targetName.length())
.equals(srcName.substring(3, srcName.length()))) {
mm.invoke(target, result);
}
}
} catch (Exception e) {
}
}
}
return target;
}
/**
*
* dto集合和实体类集合间的互相属性映射
*
* @param src
*
* @param target
*
* @param targetClass
*
* @return
*/
@SuppressWarnings("unchecked")
public static <S, T> List<T> populateList(List<S> src, List<T> target,
Class<?> targetClass) {
for (int i = 0; i < src.size(); i++) {
try {
Object object = targetClass.newInstance();
target.add((T) object);
populate(src.get(i), object);
} catch (Exception e) {
continue;// 某个方法反射异常
}
}
return target;
}
public static void main(String[] args) {
Users users = new Users();
users.setId(1);
users.setUsername("huang");
users.setPassword("123456");
UsersModel usersModel = new UsersModel();
usersModel = (UsersModel) Dto2Entity.populate(users,usersModel);
System.out.println(usersModel.toString());
}
}
