緣由:由於在重寫toString()方法時,把關聯的屬性也放入到toString方法中了,去掉就能夠了。ide
如:重寫的toString方法中不能有關聯關係IDCard屬性idCardspa
http://blog.csdn.net/xiaopihair123/article/details/53749790public class Person { private Integer id; private String name; private IDCard idCard; ...... //toString方法中不能有關聯關係IDCard屬性idCard @Override public String toString() { return "Person [id=" + id + ", name=" + name + "]"; } }