Eclipse 无法识别 Gradle 依赖项

Question

I am new to Gradle and I was trying this tutorial https://spring.io/guides/gs/rest-service/ I was able to compile the jar with the required dependencies and run it. However, I find it annoying that the libraries are not recognized by the IDE.

Is there anyway to do it?

Answer 1

You should use the gradle eclipse plugin. Add this to your build.gradle file:

apply plugin: "eclipse"

This will add eclipse related tasks to your build. By executing

gradlew cleanEclipse eclipse

Gradle will regenerate all eclipse project and classpath files based on the current dependencies of your project(s). You will however need to refresh your IDE to make the changes visible.

There is one more thing to consider. As eclipse is not really aware of the gradle dependencies - it knows them only by the generated classpath files - new dependencies will be visible to eclipse only after regenerating these files. Furthermore dependencies added in eclipse will not be visible to your gradle build and will be removed once the classpath files are regenerated.

Answer 2

What worked for me is :

right-click the build.gradle file -> Gradle -> Refresh Dependencies.

Answer 3

After importing the project as a Java project, in Eclipse Neon you:

Right-click on your project --> Configure --> Add Gradle Nature.

Your project will automatically refresh and you will see all the dependencies being downloaded by Gradle.

Answer 4

In eclipse
Window -> preference -> Gradle
in dependency management section
check on -> remap jar to Gradle projects.
Hope this helps

Answer 5

Enable auto build gradle using below settings to avoid this issue

Go to Eclipse/STS in Windows -> Preference -> Gradle, Click Gradle Workspace Settings, there Enable Auto project synchronization

It automatically refreshes the Gradle when saving the changes in build.gradle file.

Finally, click Project -> Clean-> choose your project and click Clean button

Answer 6

If you are on mac do what dpr mentioned. That is add the following in build.gradle:

apply plugin: "eclipse" 

Then run the following:

gradle cleanEclipse eclipse 

Answer 7

This is kind of a bug from the IDE's. I encounter this Gradle dependencies problem in both the Eclipse and Spring tool suite.

My sincere suggestion is that first try this, right-click the build.gradle file -> Gradle -> Refresh Dependencies.

If this does not work, Best and working solution is
1) Do gradle clean build --refresh-dependencies from the command prompt. Then create a new workspace and IMPORT the project into this workspace.

2) If the above thing failed, then in worst-case scenario one need to make a git clone of the project into a new folder and follow the above method.

Answer 8

Add the two classpath variables GRADLE_HOME and GRADLE_REPO in eclipse in the below location:

Windows -> Preferences -> Java -> Build Path -> Classpath Variables

GRADLE_HOME to be set to the Gradle Installation directory

GRADLE_REPO to be set to the cache folder inside .gradle (EXAMPLE : C:\\users\\user1\\.gradle\\caches :This location jars will be saved from repo.

Once the variables are set make sure build.gradle has the proper plugin defined depending on the eclipse version you are using:

apply plugin 'eclipse'
apply plugin 'eclipse-wtp'

Use the below configuration in build.gradle to resolve deployment issue:

eclipse {
    wtp {
        component {
            libConfigurations += [configurations.runtimeClasspath]
        }
    }
}

Then follow the below steps:

Project -> clean
Right click on the Project ->Gradle ->Refresh Gradle Project

If the above steps doesn't resolve the issue it is advise to check if the build process is able to download the jars from artifactory/nexus as due to authentication error or wrong url of artifactory/nexus jar download fails.

Answer 9

Following worked for me:

eclipse -> Window -> Preferences -> Gradle -> "Select Local Installation Directory"

Click on Browse button and provide path for Gradle directory

Cheers !

Answer 10

I have had this problem importing Gradle projects from TFS. Unless the initial import uses the Gradle importer the build.gradle will not be setup. You have to remove the project from the Eclipse workspace (do not delete on disk) and then import the project again as a Gradle project. This updates the build path according to build.gradle

Answer 11

To solve this issue : 1)right-click the build.gradle file -> Gradle -> Refresh Dependencies.

2)if this didnt help (happened to me ) Project -> Clean-> choose your project and press "Clean"