java – 为什么我得到NoClassDefFoundError:org / reactivestreams / Publisher
作者:互联网
Stream.java
import io.reactivex.*;
public class Stream {
public static void main(String args[])
{
Observable.just("Howdy!").subscribe(System.out::println);
}
}
的build.gradle:
group 'com.sakhunzai'
version '1.0-SNAPSHOT'
apply plugin: 'java'
sourceCompatibility = JavaVersion.VERSION_1_8
repositories {
mavenCentral()
}
dependencies {
compile 'io.reactivex.rxjava2:rxjava:2.0.5'
testCompile group: 'junit', name: 'junit', version: '4.11'
}
例外:
Exception in thread "main" java.lang.NoClassDefFoundError: org/reactivestreams/Publisher
....
Caused by: java.lang.ClassNotFoundException: org.reactivestreams.Publisher
我在第六页跟随tutorial,除了我决定使用gradle而不是maven
编辑
可能是gradle和Intellij IDEA的一些问题
以下修正了问题:
settings.gradle:
rootProject.name = 'JavaRx'
include "buildSrc"
解决方法:
该异常意味着类org.reactivestreams.Publisher在运行时不可用.所以它在类路径中丢失了.您可以通过在gradle中添加dependency-reference来添加到类路径中.
根据您使用的版本,它应如下所示:
dependencies {
compile group: 'org.reactivestreams', name: 'reactive-streams', version: '1.0.0'
...<the other depandancies>...
}
标签:java,reactivex 来源: https://codeday.me/bug/20190611/1217726.html