Java Gradle - 没有主要清单属性
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Gradle- no main manifest attribute
提问by tmn
I'm kind of going crazy with this error I get when running a JAR file built off Gradle. The error reads "no main manifest attribute, in RxJavaDemo.jar" I tried manipulating the Manifest property but I think I'm forgetting to add the dependencies or something to it. What exactly am I doing wrong?
在运行基于 Gradle 构建的 JAR 文件时遇到的这个错误，我有点发疯了。错误显示“在 RxJavaDemo.jar 中没有主要清单属性”我尝试操作 Manifest 属性，但我想我忘记添加依赖项或其他内容。我到底做错了什么？
apply plugin: 'java'
apply plugin: 'application'
mainClassName = 'demo.MainDashboard'
dependencies {
compile files ("H:/Processes/Development/libraries/hikari-cp/HikariCP-2.4.1.jar")
compile files ("H:/Processes/Development/libraries/controls-fx/controlsfx.jar")
compile files ("H:/Processes/Development/libraries/database_connections/sqlite-jdbc-3.8.6.jar")
compile files ("H:/Processes/Development/libraries/guava/guava-18.0.jar")
compile files ("H:/Processes/Development/libraries/rxjava/rxjava-1.0.12.jar")
compile files ("H:/Processes/Development/libraries/rxjava-extras/rxjava-extras-0.5.15.jar")
compile files ("H:/Processes/Development/libraries/rxjavafx/RxJavaFX-1.0.0-RC1-SNAPSHOT.jar")
compile files ("H:/Processes/Development/libraries/rxjavaguava/rxjava-guava-1.0.3.jar")
compile files ("H:/Processes/Development/libraries/rxjava-jdbc/rxjava-jdbc-0.6.3.jar")
compile files ("H:/Processes/Development/libraries/slf4j/slf4j-api-1.7.12.jar")
compile files ("H:/Processes/Development/libraries/tom-commons/tom-commons.jar")
}
sourceSets {
main.java.srcDir "src/main/java"
main.resources.srcDir "src/main/resources"
}
jar {
manifest {
attributes(
"Class-Path": configurations.compile.collect { it.getName() }.join(' '))
}
from configurations.compile.collect { entry -> zipTree(entry) }
}
采纳答案by Stanislav
Try to change your manifest attributes like:
尝试更改您的清单属性，例如：
jar {
manifest {
attributes(
'Class-Path': configurations.compile.collect { it.getName() }.join(' '),
'Main-Class': 'hello.HelloWorld'
)
}
}
And then just change 'hello.helloWorld'to '<your packagename>.<the name of your Main class>'(where your Main class has a main method). In this case, you make in your manifest an attribute, which point to this class, then a jar is running.
然后只需更改'hello.helloWorld'为'<your packagename>.<the name of your Main class>'（您的 Main 类有一个 main 方法）。在这种情况下，您在清单中创建一个指向此类的属性，然后运行一个 jar。
回答by Eric Hallander
FWIW - I used the following jar task to assemble all my compile dependencies into the jar file, and used the above recommendation to get the class-path properly set
FWIW - 我使用以下 jar 任务将我所有的编译依赖项组装到 jar 文件中，并使用上述建议来正确设置类路径
apply plugin: 'java-library'
jar {
manifest {
attributes(
'Class-Path': configurations.compile.collect { it.getName() }.join(' '),
'Main-Class': 'your.main.class.goes.here'
)
}
// You can reference any part of the dependency configurations,
// and you can have as many from statements as you need
from configurations.compile
// I just copied them into the top of the jar, so it looks like the eclipse exported
// runnable jar, but you could designate a lib directory, and reference that in the
// classpath as "lib/$it.name" instead of it.getName()
into ''
}
