我有以下gradle构建配置:
plugins {
id 'com.github.johnrengelman.shadow' version '1.2.3'
}
group 'abc'
version '1.0-SNAPSHOT'
apply plugin: 'java'
apply plugin: 'application'
mainClassName = "abc.Driver"
repositories {
mavenCentral()
}
dependencies {
compile (group: 'org.apache.hadoop', name: 'hadoop-client', version: '2.6.0')
}
sourceSets {
main {
java {
srcDir './src'
}
}
}
jar {
manifest {
attributes(
'Class-Path': configurations.compile.collect { it.getName() }.join(' '),
'Main-Class': mainClassName
)
}
}
task fatJar(type: Jar) {
manifest {
attributes 'Implementation-Title': 'Gradle Jar File Example',
'Implementation-Version': version,
'Main-Class': mainClassName
}
baseName = project.name + '-all'
from { (configurations.compile - configurations.provided).collect
{
//println it.getName()
it.isDirectory() ? it : zipTree(it)
}
}
{
exclude "META-INF/*.SF"
exclude "META-INF/*.DSA"
exclude "META-INF/*.RSA"
}
with jar
}
我的主要方法是以下代码:
public static void main(String[] args) {
Iterable<ClientProtocolProvider> frameworkLoader =
ServiceLoader.load(ClientProtocolProvider.class);
for(ClientProtocolProvider cpp: frameworkLoader) {
System.out.println(cpp.toString());
}
}
当我按预期从ide运行main方法时,我得到以下输出:
org.apache.hadoop.mapred.YarnClientProtocolProvider@4783da3f
org.apache.hadoop.mapred.LocalClientProtocolProvider@300ffa5d
但是当我运行gradle fat jar任务并创建fat jar时,在通过终端运行main方法(java-jar)之后,我得到:
org.apache.hadoop.mapred.LocalClientProtocolProvider@7f31245a
我发现创建fatjar时,meta-inf/services下的条目被合并为所有依赖项,因此我丢失了yarclientprotocolprovider的声明,我需要在代码中进一步声明。
yarclientprotocolprovider在hadoop-mapreduce-client-jobclient.jar中声明
localclientprotocolprovider在hadoop-mapreduce-client-common.jar中声明
有人知道如何创建一个fat jar,它不会合并meta-inf/services下的条目吗?!
1条答案
按热度按时间mctunoxg1#
这样就可以了