java 后臺開發(fā)中model與entity(實(shí)體類)的區(qū)別說明

public class Utils {
/**
* 將dto和entity之間的屬性互相轉(zhuǎn)換,dto中屬性一般為String等基本類型,
* 但是entity中可能有復(fù)合主鍵等復(fù)雜類型,需要注意同名問題
* @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集合和實(shí)體類集合間的互相屬性映射
* @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;//某個方法反射異常
} 
}
return target;
}
}