no suitable constructor found, can not deserialize from Object value (missing default constructor or creator, or perhaps need to add/enable type information?)
报这样的错一定是因为你的实体类是个嵌套的包含内部类的。
例如:
public class Person{
private String name;
private int age;
private Address address;
//省略getter setter
public class Address{
private String country;
private String province;
//省略getter setter
}
}
假如你的实体类类似上面的话,用JackSon去反序列化json数据就会报文章开头那里的错。
你需要做两件事:
- 给内部类前面加上static
- 给内部类加上默认构造函数
改过后的内部类像这样:
public static class Address{
public Address(){
}
}
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