RXJAVA-filter

Filter 你会很常用的，它的作用也很简单，过滤器嘛。可以接受一个参数，让其过滤掉不符合我们条件的值。

package com.netty.demo.vertx;

import io.reactivex.*;
import io.reactivex.functions.Consumer;
import io.reactivex.functions.Predicate;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class RxJavaTest {

    public static void main(String[] args) throws InterruptedException {

        Observable.create(new ObservableOnSubscribe<Integer>() {
            @Override
            public void subscribe(ObservableEmitter<Integer> emitter) throws Exception {
                emitter.onNext(1);
                emitter.onNext(2);
                emitter.onNext(3);
            }
        }).filter(new Predicate<Integer>() {
            @Override
            public boolean test(Integer o) throws Exception {
                return o.intValue() == 2;
            }
        }).subscribe(new Consumer<Integer>() {
            @Override
            public void accept(Integer integer) throws Exception {
                log.info(integer.toString());
            }
        });

        Thread.sleep(300000000);
    }
}

2021-02-23 16:57:43 [main] INFO  c.n.d.v.RxJavaTest:accept - 2