如何发送带有两个不同值的json文件？

Question

我发送JSON文件（现在从邮递员）的身体是这样的：

{
    "email": "[e-mail]",
    "password": "123456"
}

控制器上的方法是：

public Company getCompanyDetailsByEmailAndPassword(String email, String password) {
        System.out.println("this is email: " +email); // added the sysout to understand what arrived.
        System.out.println("this is password: " +password);
        return companyRepository.findByEmailAndPassword(email, password);
    }

我犯了个错误-

this is email: {
    "email": "[e-mail]",
    "password": "123456"
}

this is password: null
2022-04-04 18:14:07.830 DEBUG 6076 --- [nio-8080-exec-8] org.hibernate.SQL                        : select company0_.id as id1_0_, company0_.email as email2_0_, company0_.name as name3_0_, company0_.password as password4_0_ from companies company0_ where company0_.email=? and (company0_.password is null)
Hibernate: select company0_.id as id1_0_, company0_.email as email2_0_, company0_.name as name3_0_, company0_.password as password4_0_ from companies company0_ where company0_.email=? and (company0_.password is null)
2022-04-04 18:14:07.831 TRACE 6076 --- [nio-8080-exec-8] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [VARCHAR] - [{

如何解决这个问题？

Answer 1

由于有效负载本身是一个字符串（JSON格式），因此将为电子邮件参数分配整个JSON文本。

我建议改为使用一个参数，使用一个包含电子邮件字段和密码字段的类型（可能命名为类似“Account”的名称）。然后Spring知道这两个JSON字段属于该类的一个实例，您可以访问该实例的字段。

https://www.baeldung.com/spring-request-response-body#@requestbody提供了一个可能有用的示例。

Answer 2

最简单的方法是编写一个简单的类

public class EmailIdHolder {
  public String email;
  public String password;
  // add setters and getters here
} 

将控制器方法更改为：

public Company getCompanyDetailsByEmailAndPassword(EmailIdHolder id) {
        System.out.println("this is email: " +id.getEmail); // added the sysout to understand what arrived.
        System.out.println("this is password: " +id.getPassword);
        return companyRepository.findByEmailAndPassword(email, password);
    }