Maven "Could not resolve dependencies" for openid4java

Summary:

Running "mvn war:war" fails with errors including:

"The following artifacts could not be resolved: org.openid4java:openid4java:jar:0.9.6".

I'd chalk it up to the fact that I'm a Maven noob but I see that other people have posted to the openid4java web site stating jars are missing from Maven central for openid4java.

Details:

I'm trying to get up to speed with openid4java by running the Simple-OpenID sample app that's included in the latest version of openid4java (0.9.6.662).

According to the Readme "This demo requires apache Maven2 to build". The Readme also states "The mvn war:war task should create a war file which can be deployed by copying the war file".

Up to now I've been getting by with Ant and the Mavent Ant Tasks but I figured I'd bite the bullet today and install Maven 3.0.3. I followed the install instructions and can now successfully run "mvn --version"

When I run "mvn war:war" a number of files do indeed get downloaded to my local repository but ultimately the build fails with the following excerpted message:

[ERROR] Failed to execute goal on project simple-openid: Could not resolve dependencies for project org.openid4java:simple-openid:war:0.9.6: The following artifacts could not be resolved: org.openid4java:openid4java:jar:0.9.6, org.openid4java:openid4java-consumer:jar:0.9.6, org.openid4java:openid4java-server:jar:0.9.6, org.openid4java:openid4java-server-JdbcServerAssociationStore:jar:0.9.6, org.openid4java:openid4java-consumer-SampleConsumer:jar:0.9.6, org.openid4java:openid4java-server-SampleServer:jar:0.9.6: Failure to find org.openid4java:openid4java:jar:0.9.6 in http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project simple-openid: Could not resolve dependencies for project org.openid4java:simple-openid:war:0.9.6: The following artifacts c开发者_Go百科ould not be resolved: org.openid4java:openid4java:jar:0.9.6, org.openid4java:openid4java-consumer:jar:0.9.6, org.openid4java:openid4java-server:jar:0.9.6, org.openid4java:openid4java-server-JdbcServerAssociationStore:jar:0.9.6, org.openid4java:openid4java-consumer-SampleConsumer:jar:0.9.6, org.openid4java:openid4java-server-SampleServer:jar:0.9.6: Failure to find org.openid4java:openid4java:jar:0.9.6 in http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
    at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:196)

Caused by: org.apache.maven.project.DependencyResolutionException: Could not resolve dependencies for project org.openid4java:simple-openid:war:0.9.6: The following artifacts could not be resolved: org.openid4java:openid4java:jar:0.9.6, org.openid4java:openid4java-consumer:jar:0.9.6, org.openid4java:openid4java-server:jar:0.9.6, org.openid4java:openid4java-server-JdbcServerAssociationStore:jar:0.9.6, org.openid4java:openid4java-consumer-SampleConsumer:jar:0.9.6, org.openid4java:openid4java-server-SampleServer:jar:0.9.6: Failure 

Caused by: org.sonatype.aether.resolution.DependencyResolutionException: The following artifacts could not be resolved: org.openid4java:openid4java:jar:0.9.6, org.openid4java:openid4java-consumer:jar:0.9.6, org.openid4java:openid4java-server:jar:0.9.6, org.openid4java:openid4java-server-JdbcServerAssociationStore:jar:0.9.6, org.openid4java:openid4java-consumer-SampleConsumer:jar:0.9.6, org.openid4java:openid4java-server-SampleServer:jar:0.9.6: Failure to find org.openid4java:openid4java:jar:0.9.6 in 

Am I doing something wrong here or are the jars actually missing from the Maven repository?

---

I was able to resolve this problem by adding <type>pom</type> to the pom.xml. I found the answer in the OpenID4Java google group in this thread.

Here's what the thread in the google group said:

I mean you should add "pom" to the dependency section of openid4java in your pom.xml:

   <dependency>
         <groupId>org.openid4java</groupId>
         <artifactId>openid4java-consumer</artifactId>
         <!--artifactId>openid4java-server</artifactId-->
         <!--artifactId>openid4java-infocard</artifactId-->
         <!--artifactId>openid4java-xri</artifactId-->
         <!--artifactId>openid4java</artifactId-->
         <!--artifactId>openid4java-full</artifactId-->
         <version>0.9.6</version>
         <type>pom</type> <-----------------------This line can not be omitted.
    </dependency>

The type of openid4java-consumer/openid4java-server/.... are all "pom" not "jar". The jar file is in openid4java-nodeps which is depended by openid4java-consumer/openid4java-server...

---

This is what I did to make it compile and run:

1. Go to your m2 or maven central repository,
2. org->openID4java->openID4java->0.9.6 and edit openid4java-0.9.6.pom file and add pom to the dependencies which does not have jar
3. org->openID4java->openid4java-consumer-SampleConsumer->0.9.6 and edit openid4java-consumer-SampleConsumer-0.9.6.pom file and add pom to the artifact of openId-consumer
4. org->openID4java->openid4java-openid4java-server-SampleServer->0.9.6 and edit openid4java-server-SampleServer-0.9.6.pom file and add pom to the artifact of openId- server
5. org->openID4java->openid4java-server-JdbcServerAssociationStore-0.9.6 and open the pom file and add the pom to the openID-server artifact.

fusing Eclipse, then right click project and maven and update dependency you are ready to go, for maven tool user, directly compile and you are ready to roll

---

Another way to resolve the dependency in Grails is to add maven repository "https://oss.sonatype.org/content/repositories/openid4java/" and put "openid4java-nodeps" as the artifact.

repositories {
    grailsPlugins()
    grailsHome()
    grailsCentral()
    mavenCentral()      
    mavenRepo "https://oss.sonatype.org/content/repositories/openid4java/"
}

dependencies {
    runtime('mysql:mysql-connector-java:5.1.19',
            'org.apache.httpcomponents:httpclient:4.2',
            'org.openid4java:openid4java-nodeps:0.9.6') { excludes "xml-apis" }
}

---

Caused by: org.sonatype.aether.resolution.DependencyResolutionException: The following artifacts could not be resolved: org.openid4java:openid4java:jar:0.9.6, org.openid4java:openid4java-consumer:jar:0.9.6, org.openid4java:openid4java-server:jar:0.9.6, org.openid4java:openid4java-server-JdbcServerAssociationStore:jar:0.9.6, org.openid4java:openid4java-consumer-SampleConsumer:jar:0.9.6, org.openid4java:openid4java-server-SampleServer:jar:0.9.6: Failure to find org.openid4java:openid4java:jar:0.9.6 in

You need to either add a <repository> to your project containing these artifacts or install them to your local repository.

Try https://oss.sonatype.org/content/repositories/openid4java/ (found at MavenHowTo)

---

Do the maven install package for every depency openid4java-xxx failed as folow:

1. run the ant build task inside your openid4java-0.9.6 directory

2. then execute:

   mvn install:install-file -DgroupId=org.openid4java -DartifactId=openid4java-consumer -Dversion=0.9.6 -Dpackaging=jar -Dfile=<<change_this_path_to>>build\openid4java.jar
   
   mvn install:install-file -DgroupId=org.openid4java -DartifactId=openid4java-server -Dversion=0.9.6 -Dpackaging=jar -Dfile=<<change_this_path_to>>build\openid4java.jar
   
   mvn install:install-file -DgroupId=org.openid4java -DartifactId=openid4java-server-JdbcServerAssociationStore -Dversion=0.9.6 -Dpackaging=jar -Dfile=<<change_this_path_to>>build\openid4java.jar
   
   mvn install:install-file -DgroupId=org.openid4java -DartifactId=openid4java-consumer-SampleConsumer -Dversion=0.9.6 -Dpackaging=jar -Dfile=<<change_this_path_to>>build\openid4java.jar
   
   mvn install:install-file -DgroupId=org.openid4java -DartifactId=openid4java-server-SampleServer -Dversion=0.9.6 -Dpackaging=jar -Dfile=<<change_this_path_to>>build\openid4java.jar
   

And that should do it!