Re: Nullpointer-Exception addPlugin
Good day to you, Sha Jiang, Maven-dependency-plugin is the same as dependency-maven-plugin. The difference is that the former is from apache, while the latter is from codehaus. But they are basically one and the same. However, maven-dependency-plugin is not yet released (though it is scheduled to be soon). Thus, if you don't want to use a snapshot version, use the codehause dependency-maven-plugin. Cheers, Franz jiangshachina wrote: Dear Wayne, I had the same error. With your hint, I removed some artifacts carefully and gradually. Finally found that plugin maven:maven-dependency-plugin:1.0 caused the matter. Deleting the plugin would be OK. Additionally, if I don't specify plugin in POM, and run mvn dependency:copy-dependencies, Maven will use plugin org.codehaus.mojo:dependency-maven-plugin:1.0. Why Maven chose dependency-maven-plugin, but maven-dependency-plugin, by default? a cup of Java, cheers! Sha Jiang Wayne Fay wrote: You can run with mvn -X ...to get more specific debugging information about what plugin is causing your problems etc. However, I'd just delete your local Maven2 repository (~/.m2/repository) and try again. Maven will automatically download the files it needs to construct your project. I'd suspect that you have simply managed to get a bad plugin JAR in your repo somewhere. Especially given that you're behind a firewall -- many people attempt to run Maven without configuring things at first and end up with corrupt JARs etc. Then they realize they need to configure their firewall proxy and the old corrupt artifacts are still waiting in your ~/.m2 repo to bite you in the future. Wayne On 11/3/06, bernulfiskus [EMAIL PROTECTED] wrote: Hi! I'm new with Maven - i created a simple sample-project, if i compile the project i get a nullpointer-Exception! I'm behind a firewall, a proxy is configured... Any Idea? Bernie [INFO] Building Maven Default Project [INFO]task-segment: [compile] [INFO] [DEBUG] maven-resources-plugin: resolved to version 2.2 from repository central [DEBUG] Retrieving parent-POM: org.apache.maven.plugins:maven-plugins::1 for project: null:maven-r plugin:2.2 from the repository. [DEBUG] Retrieving parent-POM: org.apache.maven:maven-parent::1 for project: org.apache.maven.plug 1 from the repository. [DEBUG] Retrieving parent-POM: org.apache:apache::1 for project: org.apache.maven:maven-parent:pom . [INFO] [ERROR] FATAL ERROR [INFO] [INFO] null [INFO] [DEBUG] Trace java.lang.NullPointerException at org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginManager.java:292) -- View this message in context: http://www.nabble.com/Nullpointer-Exception-addPlugin-tf2567630s177.html#a7156625 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/Nullpointer-Exception-addPlugin-tf2567630s177.html#a7555609 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Nullpointer-Exception addPlugin
Dear Wayne, I had the same error. With your hint, I removed some artifacts carefully and gradually. Finally found that plugin maven:maven-dependency-plugin:1.0 caused the matter. Deleting the plugin would be OK. Additionally, if I don't specify plugin in POM, and run mvn dependency:copy-dependencies, Maven will use plugin org.codehaus.mojo:dependency-maven-plugin:1.0. Why Maven chose dependency-maven-plugin, but maven-dependency-plugin, by default? a cup of Java, cheers! Sha Jiang Wayne Fay wrote: You can run with mvn -X ...to get more specific debugging information about what plugin is causing your problems etc. However, I'd just delete your local Maven2 repository (~/.m2/repository) and try again. Maven will automatically download the files it needs to construct your project. I'd suspect that you have simply managed to get a bad plugin JAR in your repo somewhere. Especially given that you're behind a firewall -- many people attempt to run Maven without configuring things at first and end up with corrupt JARs etc. Then they realize they need to configure their firewall proxy and the old corrupt artifacts are still waiting in your ~/.m2 repo to bite you in the future. Wayne On 11/3/06, bernulfiskus [EMAIL PROTECTED] wrote: Hi! I'm new with Maven - i created a simple sample-project, if i compile the project i get a nullpointer-Exception! I'm behind a firewall, a proxy is configured... Any Idea? Bernie [INFO] Building Maven Default Project [INFO]task-segment: [compile] [INFO] [DEBUG] maven-resources-plugin: resolved to version 2.2 from repository central [DEBUG] Retrieving parent-POM: org.apache.maven.plugins:maven-plugins::1 for project: null:maven-r plugin:2.2 from the repository. [DEBUG] Retrieving parent-POM: org.apache.maven:maven-parent::1 for project: org.apache.maven.plug 1 from the repository. [DEBUG] Retrieving parent-POM: org.apache:apache::1 for project: org.apache.maven:maven-parent:pom . [INFO] [ERROR] FATAL ERROR [INFO] [INFO] null [INFO] [DEBUG] Trace java.lang.NullPointerException at org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginManager.java:292) -- View this message in context: http://www.nabble.com/Nullpointer-Exception-addPlugin-tf2567630s177.html#a7156625 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- View this message in context: http://www.nabble.com/Nullpointer-Exception-addPlugin-tf2567630s177.html#a7519773 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Nullpointer-Exception addPlugin
Hi! I'm new with Maven - i created a simple sample-project, if i compile the project i get a nullpointer-Exception! I'm behind a firewall, a proxy is configured... Any Idea? Bernie [INFO] Building Maven Default Project [INFO]task-segment: [compile] [INFO] [DEBUG] maven-resources-plugin: resolved to version 2.2 from repository central [DEBUG] Retrieving parent-POM: org.apache.maven.plugins:maven-plugins::1 for project: null:maven-r plugin:2.2 from the repository. [DEBUG] Retrieving parent-POM: org.apache.maven:maven-parent::1 for project: org.apache.maven.plug 1 from the repository. [DEBUG] Retrieving parent-POM: org.apache:apache::1 for project: org.apache.maven:maven-parent:pom . [INFO] [ERROR] FATAL ERROR [INFO] [INFO] null [INFO] [DEBUG] Trace java.lang.NullPointerException at org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginManager.java:292) -- View this message in context: http://www.nabble.com/Nullpointer-Exception-addPlugin-tf2567630s177.html#a7156625 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Nullpointer-Exception addPlugin
You can run with mvn -X ...to get more specific debugging information about what plugin is causing your problems etc. However, I'd just delete your local Maven2 repository (~/.m2/repository) and try again. Maven will automatically download the files it needs to construct your project. I'd suspect that you have simply managed to get a bad plugin JAR in your repo somewhere. Especially given that you're behind a firewall -- many people attempt to run Maven without configuring things at first and end up with corrupt JARs etc. Then they realize they need to configure their firewall proxy and the old corrupt artifacts are still waiting in your ~/.m2 repo to bite you in the future. Wayne On 11/3/06, bernulfiskus [EMAIL PROTECTED] wrote: Hi! I'm new with Maven - i created a simple sample-project, if i compile the project i get a nullpointer-Exception! I'm behind a firewall, a proxy is configured... Any Idea? Bernie [INFO] Building Maven Default Project [INFO]task-segment: [compile] [INFO] [DEBUG] maven-resources-plugin: resolved to version 2.2 from repository central [DEBUG] Retrieving parent-POM: org.apache.maven.plugins:maven-plugins::1 for project: null:maven-r plugin:2.2 from the repository. [DEBUG] Retrieving parent-POM: org.apache.maven:maven-parent::1 for project: org.apache.maven.plug 1 from the repository. [DEBUG] Retrieving parent-POM: org.apache:apache::1 for project: org.apache.maven:maven-parent:pom . [INFO] [ERROR] FATAL ERROR [INFO] [INFO] null [INFO] [DEBUG] Trace java.lang.NullPointerException at org.apache.maven.plugin.DefaultPluginManager.addPlugin(DefaultPluginManager.java:292) -- View this message in context: http://www.nabble.com/Nullpointer-Exception-addPlugin-tf2567630s177.html#a7156625 Sent from the Maven - Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
