java 后台开发中model与entity(实体类)的区别说明

public class Utils {
/**
* 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;
}
}