When you first resolve dependencies with gradle it generally spits out to the console what the url of the resolved dependency was (for example using if using mavenCentral() as the repository it will print out the URL to the maven central repo it resolved the dependency from).
Is there a way to to do this without removing the cache and re-resolving the dependency?
Thanks!
Related
I am following a course on youtube and tried to create a new gradle project but after the creation I've got the "Could not find method jCenter() for arguments [] on repository container of type org.gradle.api.internal.artifacts.dsl.DefaultRepositoryHandler" I have already tried updating my gradle and JDK (adding gradle to path too) but nothing fixed it, any ideas what could I try to fix my problem?
thanks in advance for your help <3
[a bit of info:
ide: IntelliJ idea; SDK: 15.0.2; java: java version "15.0.2"; gradle: 6.8.2; jdk: 15.0.2]
I'm assuming you're trying to make JCenter one of your repositories in your build.gradle file. It should be jcenter() with lower-case "c", not jCenter(). You can find this line in the repositories section of your build.gradle file.
However, JFrog is shutting down JCenter completely in May. Try using mavenCentral() instead. But the libraries you use might not be available there yet, because JFrog gave extremely short notice. If the dependencies you use are on GitHub, you might have luck adding JitPack as a repository after mavenCentral(). Many GitHub projects will automatically work on JitPack without any work on the part of the developers.
repositories {
// jcenter()
mavenCentral()
maven { url 'https://jitpack.io' }
}
this is my build.gradle
repositories {
mavenCentral()
maven{url 'http://example.com/repository/maven-public/'}
}
dependencies {
compile group: 'com.example', name: 'example-commlib', version: '1.0'
}
and the link http://example.com/repository/maven-public/ is build from Nexus Repository Manager which can accessable.
and when I click Refresh Gradle Project in eclipse.
I can see the link is point to
https://repo.maven.apache.org/..../example-commlib-1.0.pom
I think the right url is
http://example.com/repository/maven-public/.../example-commlib-1.0.pom
I've check the gradle setting and maven setting in eclipse. It seems fine.
So what's the problem?
Do you have other dependencies on this project? It is possible that the "pom.xml" file of one of the packages you are pulling references example-commlib as a dependency and has the Apache Maven URL hardcoded, and resolves the URL beforehand. You can use gradle dependencies to show the dependency tree and find which version is affected. The answers in this post have suggestions on how to force a specific dependency as well: How can I force Gradle to set the same version for two dependencies?
I imported FlexibleRichTextView library in a gradle project in eclipse and added all necessary jar files to the project for resolving errors, but one error is remained (Sereenshot of error). This error is related to CodeView-android library. For resolving this error too, i added maven { url "https://jitpack.io" } in my root build.gradle at the end of repositories and added the dependency compile 'com.github.kbiakov:CodeView-android:1.3.1' in dependencies block(Screenshot of build.gradle), but the error has not been resolved yet.
what should I do?
The gradle file might have been cached by the IDE. Try restarting the project or sync the gradle project to reflect the newly picked changes.
I have a dependency I'd like to include from a local nexus. I've seen several related problems that all say to do something like
apply plugin: "java"
apply plugin: "maven"
repositories {
maven {
url "http://my.url.com/"
}
}
dependencies {
compile "name:id:version"
}
I can access the nexus fine via web but when I try the above, I end up with a error message
Could not resolve: name:id:version
Any help would be greatly appreciated.
I found my problem. There were transitive dependencies I didn't catch as I was initially building from Eclipse without the --stacktrace option. I modified the build script such that
compile("name:id:version") {
exclude group: "another-name", module: "its-module"
// other dependencies to exclude ...
}
If by local repository you mean your local computer repository, then to ask Gradle to lookup dependencies from the local maven repository you should explicitly tell him to do so like this:
repositories {
mavenLocal()
}
Gradle is not like maven and is not using the local repository of the maven to cache downloaded artifacts. From the Gradle points of view, the local maven repository is also like other repositories.
My project has dependencies configured through gradle. I would like to add the following dependency:
compile group: 'org.restlet.jse', name: 'org.restlet.ext.apispark', version: '2.3.1'
Which can be found in the following repository (which I have added to my build.gradle):
maven {
url "http://maven.restlet.org"
}
However when I do that I get the following error:
Could not find org.restlet.jse:org.restlet.lib.swagger-models:1.5.0-SNAPSHOT.
http://maven.restlet.org/org/restlet/jse/org.restlet.lib.swagger-models/1.5.0-SNAPSHOT/maven-metadata.xml
http://maven.restlet.org/org/restlet/jse/org.restlet.lib.swagger-models/1.5.0-SNAPSHOT/org.restlet.lib.swagger-models-1.5.0-null-null.pom
http://maven.restlet.org/org/restlet/jse/org.restlet.lib.swagger-models/1.5.0-SNAPSHOT/org.restlet.lib.swagger-models-1.5.0-null-null.jar
Required by: org.restlet.jse:org.restlet.ext.apispark:2.3.1
I can see that the jar is in fact in the repository however Gradle is not looking for it in the right location for reasons unknown to me. Why is it not using the version in the filename but rather 1.5.0-null-null.
I have made a made a Maven project with the same dependency defined in the pom.xml which works.
Link to working pom.xml that has same dependency
How can this issue be resolved? I'm at this point also interesting in more manual solutions :) Thank you.
Diagnosis
It seems to be related to snapshot "uniqueness". For information on Maven repositories, snapshots artifacts can be deployed "unique" or "non-unique".
Unique snapshots: Each time you deploy a snapshot, it is tagged with a timestamp and a buildNumber, these timestamp and buildNumber are written in the maven-metadata.xml file and they are appended to its name that ends up like: artifactName-version-timestamp-buildNumber.jar.
Non-unique snapshots: Each time you deploy a snapshot it overwrites the previous version, his name ends up like: artifactName-version.jar.
It is recommended to use unique snapshot as one can refer precisely to one version of the artifact if needed.
The problem is that "http://maven.restlet.org" seems to use non-unique snapshots and sadly, gradle seems to have problems to deal with non-unique snapshots: https://issues.gradle.org/browse/GRADLE-3164.
If you look at http://maven.restlet.com/org/restlet/jse/org.restlet.lib.org.restlet.lib.swagger-models/1.5.0-SNAPSHOT/maven-metadata.xml you can clearly see null in timestamp and buildNumber tags:
<metadata>
[...]
<versioning>
<snapshot>
<timestamp>null</timestamp>
<buildNumber>null</buildNumber>
</snapshot>
<lastUpdated>null</lastUpdated>
</versioning>
</metadata>
I think that's where the "null-null" comes from.
Solution 1 - flatDir
To deal with it you can manually download the artifact, put it in a directory, for example "lib" and create a flatDir repository:
repositories {
[...]
flatDir {
dirs 'lib'
}
[...]
}
It's not an ideal solution, but it works.
Solution 2 - jcenter repository
Suggested by Opal
Add the jcenter repository that contains your missing dependency and that Gradle handles well.
Since Gradle 1.7 you can simply define it with:
repositories {
[...]
jcenter()
[...]
}
It seems that you need other repositories to download all the dependencies. Probably maven handle this transparently. The following script downloads all dependencies successfully when cp task is run:
apply plugin: 'java'
configurations {
lol
}
repositories {
jcenter()
mavenCentral()
maven {
url "http://maven.restlet.org"
}
maven {
url "https://repository.mulesoft.org/nexus/content/repositories/public/"
}
}
dependencies {
lol group: 'org.restlet.jse', name: 'org.restlet.ext.apispark', version: '2.3.1'
}
task cp(type: Copy) {
from configurations.lol
into 'deps'
}