我试图用Gradle 2.12创建一个常规罐子。 groovy文件有如下导入语句,我将此文件放在src/main/groovy
前两个导入是java文件,其中包含org.apache.hadoop
个导入语句。我将这两个文件放在src/main/java
import StartsWithCountMapper
import StartsWithCountReducer
import org.apache.hadoop.conf.Configured
import org.apache.hadoop.fs.Path
import org.apache.hadoop.io.IntWritable
import org.apache.hadoop.io.LongWritable
import org.apache.hadoop.io.Text
import org.apache.hadoop.mapreduce.Job
import org.apache.hadoop.mapreduce.Mapper
import org.apache.hadoop.mapreduce.Reducer
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat
import org.apache.hadoop.util.Tool
import org.apache.hadoop.util.ToolRunner
以下是我的build.gradle文件(使用this)
apply plugin: 'groovy'
apply plugin: 'application'
version = '1.0'
mainClassName='CountGroovyJob'
repositories {
mavenCentral()
}
dependencies {
compile 'org.codehaus.groovy:groovy-all:2.0.0'
compile 'org.apache.hadoop:hadoop-common:2.7.1'
}
task Createjar(type: Jar,dependsOn:[':compileJava',':compileGroovy']) {
from files(sourceSets.main.output.classesDir)
from configurations.runtime.asFileTree.files.collect { zipTree(it) }
manifest {
attributes 'Main-Class': mainClassName
}
}
我还试图通过将它们放在依赖项
中进行编译 compile 'org.apache.hadoop:hadoop-client:2.0.0-mr1-cdh4.0.1'
compile 'org.apache.hadoop:hadoop-core:1.2.1'
compile 'org.apache.hadoop:hadoop-hdfs:2.7.1'
但我一直收到这个错误:
/Users/../../../gradle/buildSrc/src/main/java/StartsWithCountMapper.java:5: error: package org.apache.hadoop.io does not exist
import org.apache.hadoop.io.IntWritable;
^
/Users/../../../gradle/buildSrc/src/main/java/StartsWithCountMapper.java:6: error: package org.apache.hadoop.io does not exist
import org.apache.hadoop.io.LongWritable;
^
/Users/../../../gradle/buildSrc/src/main/java/StartsWithCountMapper.java:7: error: package org.apache.hadoop.io does not exist
import org.apache.hadoop.io.Text;
如何在groovy和java文件中编译和创建包含所有import语句的jar?
修改 包括buildscrip {}
apply plugin: 'groovy'
apply plugin: 'application'
version = '1.0'
mainClassName='CountGroovyJob'
repositories {
mavenCentral()
}
dependencies {
compile 'org.codehaus.groovy:groovy-all:2.0.0'
compile 'org.apache.hadoop:hadoop-common:2.7.1'
}
task Createjar(type: Jar,dependsOn:[':compileJava',':compileGroovy']) {
from files(sourceSets.main.output.classesDir)
from configurations.runtime.asFileTree.files.collect { zipTree(it) }
manifest {
attributes 'Main-Class': mainClassName
}
}
buildscript{
repositories {
mavenCentral()
}
dependencies {
compile 'org.codehaus.groovy:groovy-all:2.0.0'
compile 'org.apache.hadoop:hadoop-common:2.7.1'
}
}
文件夹结构:
grad-proj
|
+-- build.gradle
|
+-- src
|
+-- main
|
+-- groovy
|
+-- java
答案 0 :(得分:2)
import语句位于buildSrc
而不是main
的代码中,这意味着buildscript依赖项部分需要依赖项。
而是将依赖关系应用于适用于main
目录中的源的一般依赖关系部分。
添加到build.gradle:
buildscript{
repositories {
mavenCentral()
}
dependencies {
compile 'org.codehaus.groovy:groovy-all:2.0.0'
compile 'org.apache.hadoop:hadoop-common:2.7.1'
}
}