java.lang.ClassNotFoundException: Didn't find class "org.reactivestreams.Publisher" on path

缺少jar包 　　　　　　 reactive-streams-1.0.0.jar  和  　reactive-streams-1.0.0-sources.jar

 常用于  Rxjava 开发过程中

<?xml version="1.0"?>

-<component name="libraryTable">


-<library name="org.reactivestreams:reactive-streams:1.0.0@jar">


-<CLASSES>

<root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.reactivestreams/reactive-streams/1.0.0/14b8c877d98005ba3941c9257cfe09f6ed0e0d74/reactive-streams-1.0.0.jar!/"/>

</CLASSES>

<JAVADOC/>


-<SOURCES>

<root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.reactivestreams/reactive-streams/1.0.0/5be7bd3f38e43c8fc83699bbb5328c62adb95bbf/reactive-streams-1.0.0-sources.jar!/"/>

</SOURCES>

</library>

</component>