public class Test {
public static void main(String[] args) {
List<Tem> list = new ArrayList<>();
list.add(new Tem(1));
list.add(new Tem(2));
System.err.println("对象List = " + JSONObject.toJSONString(list));
List<Tem> newList = list.stream().map(e -> {
Tem t = new Tem();
BeanUtils.copyProperties(e, t);
return t;
}).collect(Collectors.toList());
System.err.println("拷贝出来的List = " + JSONObject.toJSONString(newList));
list.get(0).setId(44);
System.err.println("修改list集合对象信息之后 = " + JSONObject.toJSONString(list));
System.err.println("拷贝出来的List = " + JSONObject.toJSONString(newList));
}
}
class Tem {
public Tem() {
}
public Tem(int id) {
this.id = id;
}
private int id;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
运行结果：ERROR 忽略
image.png
