处理来自可选映射中方法的异常

Question

我有一个这样的方法。

@Override
public Optional<List<Order>> getPendingOrders(AuthDTO authDTO) throws MyException {
    return connector.getConnection(authDTO).map(p->p.getOrders());
}

这里

connector.getConnection(authDTO)

p->p.getOrders() 

public class KException extends Throwable {

    // variables
    public String message;
    public int code;

    // constructor that sets the message
    public KException(String message){
        this.message = message;
    }

    // constructor that sets the message and code
    public KException(String message, int code){
        this.message = message;
        this.code = code;
    }
}

public class MyException extends KException {

    public MyException(String message, int code) {
        super(message, code);
    }
}

unreported exception com.something.exceptions.KException; must be caught or declared to be thrown

我想将这个KException转换为MyException。有没有一个优雅的方法来做这件事？请帮帮忙。

Answer 1

正如一些注释所建议的那样，您可以在map操作中捕获异常，然后执行所需的任何进一步逻辑：

return getConnection(authDTO).map(p -> {
        try {
            return p.getOrders();
        } catch (KException e) {
            // perform some other logic
        }
});