如何从Mono< String>获取字符串在反应式Java中 [英] How to get String from Mono<String> in reactive java
问题描述
我有一个接受Mono作为参数的方法. 我想要的只是从中获取实际的String.用谷歌搜索,但是除了在Mono对象上调用block()之外没有找到答案,但是它将进行阻塞调用,因此要避免使用block().如果可能的话,请提出其他建议. 我需要此String的原因是因为在此方法中,我需要使用实际的String值调用另一个方法,例如print(). 我知道这很容易,但是我是反应式编程的新手.
I have a method which accepts Mono as a param. All I want is to get the actual String from it. Googled but didn't find answer except calling block() over Mono object but it will make a blocking call so want to avoid using block(). Please suggest other way if possible. The reason why I need this String is because inside this method I need to call another method say print() with the actual String value. I understand this is easy but I am new to reactive programming.
代码:
public String getValue(Mono<String> monoString)
{
// How to get actual String from param monoString
//and call print(String) method
}
public void print(String str)
{
System.out.println(str);
}
推荐答案
最后,对我有用的是调用如下所示的flatMap方法:
Finally what worked for me is calling flatMap method like below:
public void getValue(Mono<String> monoString)
{
monoString.flatMap(this::print);
}
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