为什么Lombok@builder不兼容这个构造函数？

Question

@Data
@Builder
public class RegistrationInfo {

    private String mail;
    private String password;

    public RegistrationInfo(RegistrationInfo registrationInfo) {
        this.mail = registrationInfo.mail;
        this.password = registrationInfo.password;
    }
}

Error:(2, 1) java: constructor RegistrationInfo in class com.user.RegistrationInfo cannot be applied to given types;
  required: com.user.RegistrationInfo
  found: java.lang.String,java.lang.String
  reason: actual and formal argument lists differ in length  

null

Answer 1

您可以添加@allargsconstructor批注，因为

@builder生成一个全参数构造函数，如果没有定义其他构造函数。

（引用@安德鲁·托比尔科）

@Builder(toBuilder = true)
class Foo {
    // fields, etc
}

Foo foo = getReferenceToFooInstance();
Foo copy = foo.toBuilder().build();