I am using Eclipse 2020-06 (4.16.0) version.
In my application I have maven-compiler-plugin defined in my Pom.xml like below.
I also have the specific jars in /users/.m2/repository folder.
When I run the Maven on my project, I still get this error.
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.7.0:compile (default-compile) on project <>: Compilation failure: Compilation failure:
Also I see the below error:
[ERROR] error reading C:\Users\XXXXXXX.m2\repository\org\apache\httpcomponents\httpclient\4.5.6\httpclient-4.5.6.jar; ZipFile invalid LOC header (bad signature)
I thought httpclient jar file and maven-compiler-plugin got corrupted. I downloaded from internet and did mvn install. Still I see these errors. How can we resolve it.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
In your .m2/repository tree, remove the entire "4.5.6" directory. In your project directory, rerun "mvn -U" package (-U is probably overkill after deleting the directory, but it's a good habit to get into, to ensure that dependencies are redownloaded). Verify that it shows Maven redownloading the httpclient artifact. If you still see the same error, look at the contents of the downloaded "httpclient-4.5.6.jar" file. In this case, I expect it will be a text file, containing html output. If so, that means there is something wrong with your proxy settings in your settings.xml file.
Related
I have a multi-module project that I'm trying to import in my Ubuntu 12.04 LTS's Eclipse Juno. (I already have done it successfully on Windows 7).
My project has six modules, the first four modules are successfully imported from the SVN Repository and built with Maven 3.0.5, but when I try to build the fifth called core, i receive the following error:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1:war (default-war) on project core: Could not copy resource [/opt/workspace/core/target\preassembly]: File /opt/workspace/core/target\preassembly/scripts/Mask.js does not exist -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
As the error says, It looks like that Maven can't find the directory /opt/workspace/core/target\preassembly to copy the file /opt/workspace/core/target\preassembly/scripts/Mask.js.
But, this directory actually exists and the file Mask.js is in there. What looks strange to me is that backslash \ after target directory instead a common bar /. But I have no idea if this is a problem and how to solve it, I spent 2 days researching the Internet but unfortunately I've found nothing.
Here's my maven-war-plugin configuration section of parent project's pom.xml, where the backslashes appear
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1</version>
<configuration>
<webResources>
<resource>
<directory>${project.build.directory}\preassembly</directory>
</resource>
</webResources>
</configuration>
</plugin>
I've also checked the owner of the directories on Ubuntu, and everything refers to the same owner that worked on the first four modules.
As I said above, the same version of eclipse, svn and maven works great on Windows.
Anyone ever had this problem? Thank you very much.
I was working on angular 8 and updated the code to angular 9 and then during build i got the same issue .For me clean build solved the issue.You can try clean build , hope that will help .
On building my workspace, my Java 6 Maven project is marked with an error (a Maven problem):
Could not calculate build plan: The repository system is offline but the artifact org.apache.maven.surefire:surefire:pom:2.7.1 is not available in the local repository.
What strikes me as odd is that it is searching for org.apache.maven.surefire:surefire while the true dependency is org.apache.maven.surefire:maven-surefire-plugin.
My effective pom is showing:
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.7.1</version>
<executions>
I'm using Eclipse Indigo with the m2eclipse plugin. And it compiles correctly when running any Maven goal. I tried cleaning the project, reimporting it, clearing the .metadata file.
Where does this behavior come from? Thanks
The mentioned dependency is the parent project for the maven-surefire-plugin and should usually not given directly only via the maven-surefire-plugin itself.
Furthermore What strikes me as odd is that it is searching for org.apache.maven.surefire:surefire while the true dependency is org.apache.maven.surefire:maven-surefire-plugin. which is simply wrong, cause the correct groupId and artifactId for the maven-surefire-plugin is:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.7.2</version>
...
</plugin>
It could be possible having problems while accessing maven central. Apart from the above you should update the maven-surefire-plugin cause the current up-to-date version is 2.15.
I am getting the following error when I run my playN project.
"No file found for: /myproject/myproject.nocache.js"
Also I am getting only a black screen in the browser.
In the MyProjectHtml.java file I am giving the path as
"platform.assets().setPathPrefix("myproject/");"
How can I resolve this problem. I am not finding any file with the name "nocache".
Note: The comment in one of my previous question's answer will be useful: How to Run my playN game in production mode locally?
Thank you.
SOLVED: the resource folder under war was getting generated using eclipse compile only.I have created a source folder src/main/resources and moved all my resources package to it. Before it was under src/main/java. Now it works..! I can compile from terminal and run.
Are you running the project via Maven (mvn test -Ptest-html) or as GWT project (mvn gwt:run)?
The first case should work if your path is set correctly, but running it as a GWT project has always failed for me.
I also suggest doing a mvn clean install, and seeing which resources are contained within your .war file. Your .nocache.js file should be in there, if not, you probably have a bigger issue (incorrect project setup).
Update:
Seeing as you don't have the .nocache.js file in your war something is wrong with your Maven configuration. See if the following config has been added to your HTML pom in your plugins tags:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>gwt-maven-plugin</artifactId>
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
Either way, your HTML version won't run until you see the .nocache.js in your war file. Double-check your Maven configuration with a new PlayN project, and see where there are differences.
I'm using the GWT Maven plugin from Codehaus with m2eclipse. Where is my web.xml file supposed to end up? Isn't the Maven build supposed to copy it to the /war directory? I can't see it there. Or does Jetty pick it up automatically from src/main/webapp/WEB-INF/?
Here's a relevant section from my pom.xml.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<warSourceDirectory>war</warSourceDirectory>
<webXml>src/main/webapp/WEB-INF/web.xml</webXml>
</configuration>
</plugin>
I believe web.xml (and everything else under src/main/webapp/) gets copied into target/<projectname>-<version>/ during the normal maven lifecycle (For example, when you run mvn install).
If you're running any of the gwt-maven plugin goals, then check out this link.
When running gwt:run, if you want to run the full web app just as if you have built and deployed a war, I found the best way is to add the following to the configuration for the gwt-maven plugin:
<hostedWebapp>
${project.build.directory}/${project.build.finalName}
</hostedWebapp>
This tells gwt-maven plugin to look for the web.xml (and all the other parts of the war file) under target/<projectname>-<version>/. So make sure to either run mvn install first (or mvn war:exploded), then run mvn gwt:run and you should be set.
I would like to have the maven eclipse plugin regenerate my .classpath whenever a build is run, and I did so by using the following configuration:
<!--
Generate a new .classpath each time the build is run, but don't try
to download sources or javadocs
-->
<profile>
<id>elipse-update</id>
<activation>
<file>
<exists>.classpath</exists>
</file>
</activation>
<build>
<plugins>
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>eclipse</goal>
</goals>
<configuration>
<downloadSources>false</downloadSources>
<downloadJavadocs>false</downloadJavadocs>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
For some reason, this causes the maven jetty plugin to fail with ClassNotFoundException errors (it complains about all sorts of Spring classes not being there). Of course, it worked without a hit when I didn't have the maven eclipse plugin installed. Here's an example of what I'm talking about:
$ mvn jetty:run
[INFO] Scanning for projects...
...
[INFO] Starting jetty 6.1.22 ...
2010-02-11 20:53:08.984:INFO::jetty-6.1.22
2010-02-11 20:53:09.109:WARN::Could not instantiate listener org.springframework.web.context.ContextLoaderListener
java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at org.codehaus.classworlds.RealmClassLoader.loadClassDirect(RealmClassLoader.java:195)
at org.codehaus.classworlds.DefaultClassRealm.loadClass(DefaultClassRealm.java:255)
at org.codehaus.classworlds.DefaultClassRealm.loadClass(DefaultClassRealm.java:274)
at org.codehaus.classworlds.RealmClassLoader.loadClass(RealmClassLoader.java:214)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
Of course, if I delete that eclipse plugin section, I can run jetty as expected:
$ mvn jetty:run
[INFO] Scanning for projects...
...
Feb 11, 2010 8:55:28 PM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization completed in 1672 ms
2010-02-11 20:55:28.687:INFO::Started SelectChannelConnector#0.0.0.0:8080
[INFO] Started Jetty Server
[INFO] Starting scanner at interval of 5 seconds.
Some things I know:
Yes, I only activate this profile if the .classpath is present. This seems counter-intuitive, but I have a reason: I have another profile that activates when the .classpath is absent which runs the eclipse plugin with the options for downloading source code and javadocs set to true. I don't want this to happen each build, so I created a separate plugin config for when the classpath is already there.
Yes, I could simply create properties that held the values of the options I wish to change instead of specifying the entire plugin config again. In that case, I would just set a eclipse.downloadSources property to true or false depending on the presence of the classpath and have a single plugin definition in the regular build section.
Any advice? This is a strange problem.
Thanks,
LES
I suspect the Maven Eclipse Plugin to mess do some classpath woodo that affects the jetty plugin later.
But to be honest, this is not a very common way to use the Eclipse plugin, at least not to my knowledge. Most people don't include it in their build, they just run it when the POM has changed and this generally doesn't happen every build. Moreover, touching the .classpath confuses Eclipse if I remember well and forces a clean rebuild of the project which is pretty annoying.
So at the end, and I'm sorry for that, this seems to introduce more annoyances than benefits. You can try to open a Jira issue though.
You really don't want to run the maven-eclipse-plugin on every build when there's a .classpath present. I can't tell you exactly what it does to the classpaths, but this is not how it's intended to be used. The assumption is that when you run it you only run eclipse:eclipse (or some other goal).
Why do you want to keep re-running it?