我将user表存储为: |---------------------|------------------|-------------------------------------------------------------|
| id | name | address
|---------------------|------------------|-------------------------------------------------------------|
我创建了类人和类地址。当我试图在类p1中实例化一个实例变量MyApp时,我得到一个错误地址'Address(java.lang.String,java.lang.String,int,java.lang.String,java.lang.String)‘无法应用于'(java.lang.String,java.lang.String)’。
public class Person {
private String firstname;
private String lastname;
private Address address;
private
我试图将某些json字段映射到一个类实例变量。
我的示例Person类如下所示:
public class Person {
private String name;
private Address address;
//many more fields
//getters and setters
}
示例地址类是:
public class Address {
private String street;
private String city;
//many more fields
// getters and setters
}
这是示例代码 public class Address{
@Column(name = "STREET_NAME")
private String street;
@Column(name = "CITY_NAME")
private String city;
@Column(name = "STATE_NAME")
private String state;
@Column(name = "PIN_CODE")
private int pin;
//setters and getters
}
public class Use
我使用RestTemplate调用一些第三方API,RestTemplate将自动将接收到的JSON转换为java,如下所示:
Result result = restTemplate.getForObject(url, Result.class);
但是,有时JSON结构非常简单,例如两个示例:
{"access_token":"abcdefg","expires_in":7200} //only need access_token
{"status":0,"result":{"x":25,&