Trying to get a BASIC test that Gradle works properly in my environment. Hence, admittedly, wasn’t able to research how to set the main class correctly; pardon. As I understand 'Main-Class' attribute of MANIFEST.MF should be set by "application" plugin application { mainClassName = appMainClassName } ... // This task must be added to the build.gradle.kts file Often, a suggested solution is to add or edit a jar { } section in the build.gradle file. In order to run the main method from our jar, we need to mention it inside the ‘Main-Class’ property of the manifest file (mainClass attribute in POM.xml in case of Mavenized application) which needs to be bundled with the code as well. Why don’t you show us your current build script, full text of your Java class, full directory structure, and full directory structure of the resulting jar? To get latest had to find SDKMAN! However, I have been through the documentation and Gradle produces a jar file, I cannot run the jar file. 오류는 "no main manifest attribute, in RxJavaDemo.jar"로 표시됩니다. apply plugin: ‘java’ apply plugin: ‘application’ //apply plugin: ‘eclipse’. I looked at your zip, and your main.kt source. New to java, kotlin, gradle, gradle DSL I stumbled upon your post trying to solve my own environment issues. It appears that adding “mainClassName” has no effect on the manifest. Gradle appears to be installed properly. no main manifest attribute spring maven (2) ... Je suis un peu fou avec cette erreur que je reçois lors de l’exécution d’un fichier JAR créé à partir de Gradle. I realize it must be frustrating dealing with a problem like this. The JAR is not executed, of course, since we haven’t defined the main entry class in in manifest. The -jar option only works if the JAR file is an executable JAR file, which means it must have a manifest file with a Main-Class attribute in it. Gradle doesn’t use it. Powered by Discourse, best viewed with JavaScript enabled. I will keep you posted. In order to run the main method from our jar, we need to mention it inside the ‘Main-Class’ property of the manifest file (mainClass attribute in POM.xml in case of Mavenized application) which needs to be bundled with the code as well. See Packaging Programs in JAR Files to learn how to create an executable JAR.. I have tried to run it with gradle run and with the jar command. Some lines in directory list removed for clarity purposes. I still get: no main manifest attribute, in helloworld-0.1.jar. java - with - kotlin no main manifest attribute . A jar file is produced. gradle clean followed by gradle build results in: Total time: 3.584 secs C:\Code\gradletest>gradle build :compileJava UP-TO-DATE :processResources UP-TO-DATE :classes UP-TO-DATE :jar :assemble :compileTestJava UP-TO-DATE :processTestResources UP-TO-DATE :testClasses UP-TO-DATE :test UP-TO-DATE :check UP-TO-DATE :build, Total time: 3.869 secs C:\Code\gradletest>, AND the MANIFEST.MF file reads as: Manifest-Version: 1.0 Created-By: 1.8.0-b132 (Oracle Corporation) Main-Class: Code.gradletest.HelloWorld, STILL unable to RUN the application. Directory now looks like: C:\Code\gradletest>dir /s, Directory of C:\Code\gradletest\src\main\java\Code, Directory of C:\Code\gradletest\src\main\java\Code\gradletest, C:\Code\gradletest>gradle clean :clean UP-TO-DATE, Total time: 3.599 secs C:\Code\gradletest>gradle build :compileJava :processResources UP-TO-DATE :classes :jar :assemble :compileTestJava UP-TO-DATE :processTestResources UP-TO-DATE :testClasses UP-TO-DATE :test UP-TO-DATE :check UP-TO-DATE :build. The package the class is defined to be in has to match the folder structure the source file resides in. and then spent a bit of time figuring out how to use gradle init to create the wrapper so that it plays nicely with Netbeans. This is something that “gradle run” does take care of for you. In this case, you make in your manifest an attribute, which point to this class, then a jar is running. danfouts ... "no main manifest attribute" and others. Did you ever inspect the actual contents of the jar file to see what’s in it? Der Fehler lautet "no main manifest attribute, in RxJavaDemo.jar". The Java plugin expects Java code in “src/main/java”, and the classes should match the package structure (Code/gradletest/HelloWorld.java). I am a noob. Einschließlich Java-Bibliothek, die mit Gradle erstellt wurde ... Das "maven-publish" -Plugin von Gradle vereinfacht die Veröffentlichung im lokalen Repository und erstellt automatisch eine PublishToMavenLocal-Aufgabe. Problem: no main manifest attribute, in "APPLICATION_NAME.jar" Thanks, Directory of C:\Code\gradletest\src\main\java, Directory of C:\Code\gradletest\src\main\java\code, Directory of C:\Code\gradletest\src\main\java\code\gradletest. Gradle 2.1: no main manifest attribute. C:\Code\gradletest\build\libs>jar tf helloworld-0.1.jar META-INF/ META-INF/MANIFEST.MF Code/ Code/gradletest/ Code/gradletest/HelloWorld.class, C:\Code\gradletest\build\libs>jar xf helloworld-0.1.jar shows that the MANIFEST.MF file has only 2 lines (1 blank line) Manifest-Version: 1.0. I still get the error. Used the jar uf to update the jar. Read the user guide section on this plugin for more information. Gradle- kein Hauptmanifestattribut (2) Ich werde verrückt nach diesem Fehler, den ich bekomme, wenn ich eine JAR-Datei aus Gradle starte. Your package is “Code.gradletest”, but you’ve stored the source file in “code/gradletest”. However, I have been through the documentation and Gradle produces a jar file, I cannot run the jar file. Now you’ve changed your Java class so it’s now in the default package, instead of “Code.gradletest”, but all of the other references expect it to be in “Code.gradletest”. 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. However, if you do “gradle run” at this point, it should execute the main class. $ java -jar build/libs/gradle-java.jar no main manifest attribute, in build/libs/gradle-java.jar. I think you should use the “application” plugin, which provides a “mainClassName” project property. Gradle- no main manifest attribute 2015-09-14 14:18:11 6; No main manifest attribute after creating jar, Cmd Windows 2016-07-28 12:57:24 0; No main manifest attribute (Heroku deployment) 2016-11-03 11:50:02 0; no main manifest attribute, in application.jar I am guessing you need package mainkt as line 1 in your main.kt source file. If you also want the manifest change, then you’ll have to add something like the following to your build.gradle: With this, both “gradle run” and your “java -jar …” approach will execute the main class. Add back the following statement to the top of your class: And when you’re asked to provide additional information, there’s not much point in creating separate responses for each piece of information. Your example build.gradle.kts helped me a lot. What do you mean by “I’ve written the Java code”? Thank you for your effort. If it is not able to find an entry,then it will complain with Unable to execute jar- file: “no main manifest attribute”.. MANIFEST.MF contains information about files contained in the Jar file. L'erreur indique "pas d'attribut manifeste principal, dans RxJavaDemo.jar". Gradle has changed a bit. Answered. This class is the one with the main method. Gradle- no main manifest attribute 2015-09-14 14:18:11 6; No main manifest attribute after creating jar, Cmd Windows 2016-07-28 12:57:24 0; No main manifest attribute (Heroku deployment) 2016-11-03 11:50:02 0; no main manifest attribute, in application.jar When you run self-executable jar, java will look for the Main-Class in MANIFEST.MF file located under META-INF folder. C:\Code\gradletest\build\libs>java -jar helloworld-0.1.jar no main manifest attribute, in helloworld-0.1.jar. The JAR is not executed, of course, since we haven’t defined the main entry class in in manifest. Interesting. Du kannst also einfach rennen I would imagine there are ways to amend the manifest with “classpath” properties that add your dependencies. Possible to create JAR artifact by defining Manifest in Gradle? DOS is case-insensitive, but Java is not. OK deleted the whole directory structure and started again. Then ran java -jar command to get the same results. Wasn’t that clear from my earlier comments? It won’t matter for this simple test case, but what you will NOT get with the “java -jar” approach is any additional jars in the classpath needed by a more complex main class. Some lines in directory list removed for clarity purposes. I’ve put a MANIFEST.MF file in the META-INF directory. I'm kind of going crazy with this error I get when running a JAR file built off Gradle. What am I missing? This MANIFEST.MF file that you’ve created is irrelevant. I viewed the contents ( jar tf ) however I did not notice this. Then I tried to run the jar and I consistently get the “error message”. It looks to me like you need to learn some basic principles of Java. This information was missing in the MANIFEST.MF.Below the content of this file before adding the maven-jar-plugin : That should have been java -jar app.jar instead of java -jar "app".. no main manifest attribute spring maven (2) ... Je suis un peu fou avec cette erreur que je reçois lors de l’exécution d’un fichier JAR créé à partir de Gradle. Let me try that. Old Forum. 郑重声明：本站内容来源于网络，为尊重原创，本站尽力寻找并添加资料原文链接。如有侵权，请及时联系邮箱给我发信删除！, "No Main Manifest Attribute" in ----.jar Netbeans, No main manifest attribute, in gdx-setup.jar, "no main manifest attribute" when trying to execute fat jar, no main manifest attribute error for maven project, no main manifest attribute error after add volley.jar library, scala sbt assembly "no main manifest attribute", Java/Swing/Maven: no main manifest attribute, No main manifest attribute after creating jar, Cmd Windows, No main manifest attribute (Heroku deployment), no main manifest attribute, in application.jar, No main manifest attribute error when running jar, Can't execute jar- file: "no main manifest attribute". C:\Code\gradletest\build\libs>java -jar helloworld-0.1.jar, no main manifest attribute, in helloworld-0.1.jar. Learning is what I am trying to do. Take time to understand ! Follow. If it’s not an executable JAR, then you’ll need to run the program with something like: Gradle에서 빌드 된 JAR 파일을 실행할 때 발생하는이 오류로 인해 미쳐 가고 있습니다. This class is the one with the main method. HelloWorld.java now reads: ( Located at C:\Code\gradletest\src\main\java\Code\gradletest ), Total time: 4.77 secs C:\Code\gradletest>. L'erreur indique "pas d'attribut manifeste principal, dans RxJavaDemo.jar". You appear to have “HelloWorld.java” in the root of your project. 847 gradle-app.setting 09/09/2014 08:22 AM, 126 HelloWorld.java 09/09/2014 09:19 AM, apply plugin: ‘java’ //apply plugin: ‘eclipse’, mavenCentral() } // end::repositories[], compile “joda-time:joda-time:2.2” } // end::dependencies[], // tag::wrapper[] task wrapper(type: Wrapper) {, gradleVersion = ‘2.1’ } // end::wrapper[], Manifest-Version: 1.0 Created-By: 1.8.0-b132 (Oracle Corporation) Main-Class: Code.gradletest.HelloWorld, C:\Code\gradletest>gradle build :compileJava UP-TO-DATE :processResources UP-TO-DATE :classes UP-TO-DATE :jar :assemble :compileTestJava UP-TO-DATE :processTestResources UP-TO-DATE :testClasses UP-TO-DATE :test UP-TO-DATE :check UP-TO-DATE :build, Directory of C:\Code\gradletest\build\libs. So I have updated the MANIFEST.MF in the jar with the MANIFEST.MF in the \build\libs directory. What exactly am I doing wrong? Since your are running an executable jar file, Java will look for the manifest MANIFEST.MF located under META-INF/ which contains information about the files packaged.. Java must know the main class to run. Problem: no main manifest attribute, in "APPLICATION_NAME.jar" The META-INF has been removed. Trying to get a BASIC test that Gradle works properly in my environment. Try to change your manifest attributes like: And then just change 'hello.helloWorld' to your class, which has a main method. apply plugin: ‘java’ apply plugin: ‘application’, mainClassName = ‘Code.gradletest.HelloWorld’, and is located at: C:\Code\gradletest\src\main\java\Code\gradletest, The full directory structure (with the META-INF removed) C:\Code>cd gradletest, Total time: 3.597 secs C:\Code\gradletest>gradle build :compileJava :processResources UP-TO-DATE :classes :jar :assemble :compileTestJava UP-TO-DATE :processTestResources UP-TO-DATE :testClasses UP-TO-DATE :test UP-TO-DATE :check UP-TO-DATE :build, Total time: 4.703 secs C:\Code\gradletest>, Directory of C:\Code\gradletest.gradle\2.1, Directory of C:\Code\gradletest.gradle\2.1\taskArtifacts, 31 cache.properties 09/10/2014 12:06 PM, 17 cache.properties.lock 09/10/2014 12:06 PM, 18,790 fileHashes.bin 09/10/2014 12:06 PM, 19,282 fileSnapshots.bin 09/10/2014 12:06 PM, 18,602 outputFileStates.bin 09/10/2014 12:06 PM, Directory of C:\Code\gradletest\build\classes, Directory of C:\Code\gradletest\build\classes\main, Directory of C:\Code\gradletest\build\dependency-cache, Directory of C:\Code\gradletest\build\tmp, Directory of C:\Code\gradletest\build\tmp\compileJava, Directory of C:\Code\gradletest\build\tmp\jar. $ java -jar build/libs/gradle-java.jar no main manifest attribute, in build/libs/gradle-java.jar. Bob_Paris (robert.paris) March 30, 2015, 12:53am #1. no main manifest attribute, in C:\Users\lb53616\Documents\cyient\watermarkImagesWorkspace\gradle\wrapper\gradle-wrapper.jar Process finished with exit code 1 commented Aug 26, 2019 by anonymous Manifest 속성을 조작하려고했지만 종속성이나 무언가를 추가하는 것을 잊은 것 같습니다.

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