Lombok Builder 可以处理可能抛出异常的构造函数吗？

Question

以下不编译

@Builder
public class ExampleClass {
    private final String field1;
    private final int field2;

    private ExampleClass (String field1, int field2) throws JAXBException {
        // all args constructor that might throw an exception
    }
}

因为java: unreported exception javax.xml.bind.JAXBException in default constructor

原因可能是因为build()方法没有声明它可能会抛出构造函数可能抛出的checkedException

有没有办法让 Lombok 声明这个而不用我们自己显式实现 build() 方法？

@Builder
public class ExampleClass {
    private final String field1;
    private final int field2;

    private ExampleClass(String field1, int field2) throws JAXBException {
        // all args constructor that might throw an exception
    }

    /**
     * I don't want to explicitly declare this
     */
    public static class ExampleClass Builder {
        public ExampleClass build() throws JAXBException {
            return new ExampleClass(field1, field2);
        }
    }
}

Answer 1

来自the documentation：

This only works if you haven't written any explicit constructors yourself. If you do have an explicit constructor, put the @Builder annotation on the constructor instead of on the class.

将 @Builder 注释移动到构造函数，它将起作用：

public class Foo {
    private final String field1;
    private final int field2;

    @Builder
    private Foo(String field1, int field2) throws JAXBException
    {
        this.field1 = field1;
        this.field2 = field2;
        throw new JAXBException("a");
    }
}

来自文档

Lombok Builder 可以处理可能抛出异常的构造函数吗？

Can a Lombok Builder handle a constructor that may throw an Exception?

java

exception-handling

builder

lombok