I have a web application which depends on another standalone project. Simply the web project requires a standalone project jar to be in classpath. I have built the standalone project jar with gradle and included that in web application's WEB-INF/lib folder. The project is running as expected. Now i want to make it automatic by adding that project as dependency. This is also achieved using the following code.
settings.gralde
include 'job-invoker'
project(':job-invoker').projectDir = new File(settingsDir, '../job-invoker')
build.gradle
dependencies {
compile project(':job-invoker')
.
.
}
I'm able to build the war file from command line using gradle and run it in tomcat. But i'm getting errors in eclipse. I'm not able to run the project in eclipse due to the compilation errors. Can some one please help me. Thanks in advance.
Finally i found a solution for this by installing the other project in maven local repository and adding this as a regular dependency in project. Reference code is given below.
Other project Gradle file
apply plugin: 'maven'
group = 'com.xxx.job'
version = '1.0'
Run gradle install command on this project. Then add mavenLocal() to your repositories in another project and add the dependency
compile 'com.xxx.job:job-invoker:1.0'
Related
A multi-module maven project will be buit successfully from the command line using mvn clean install and is loaded successfully in vscode without any compilation errors.
When the same project is opened in Eclipse (version Version: 2022-09 (4.25.0), Build id: 20220908-1902), I see compilation errors for dependencies not resolved for example:
The import com.ibm cannot be resolved
I tried everything to resolve this error, nothing worked, for example:
Update maven project
Project / Clean
Remove maven feature, delete the project, reimport, and convert back to maven
The strange thing is that if I delete the repository folder from <user-home>\m2.\repository and make a simple change to any pom.xml file, the entire repository folder is downloaded. Also, I located the JAR file using VSCode (ctrl-click) and I can see the related JAR logEnglish-1.0.jar in the local .m2 repository folder <user-home>\.m2\repository\logEnglish\logEnglish\1.0\logEnglish-1.0.jar.
The problem is that only Eclipse is reporting compilation errors and a lot or maybe all of the maven dependencies are not resolved. This is also affecting the debugging option and it breaks due to such compilation errors.
Another thing I noticed is that the Maven Dependencies folder is not showing on the Project Explorer no in Package Explorer, but I can see Maven Dependencies entry in Project Properties -> Configure Build Path -> Libraries.
Please help resolve this issue so that I can clear the compilation errors in Eclipse.
Update 1:
I created a simple parent/child pom with one inner module. I was able to reproduce the problem right away.
See attached snapshots for details.
The compile errors will show only when you open the parent project. If you open the inner module directly as a separate project, no compile errors will show and I can run and debug the project. However, if I try to debug the parent project, I will get a warning due to compile errors, and I can run the project only and only after I added the jar of the inner module to the classpath of the debug configuration. If I don't add the jar file, I will get this error Error: Could not find or load main class training.FirstProjectClass. The project is being built successfully using mvn clean install and that's why I can run the project. If I run mvn clean then I cannot run the parent project.
Also, notice how the maven dependencies folder will show if you open the inner project directly, but, it won't show if you open the parent project.
In addition, I noticed if I add the inner project to the classpath of the debug config then it works also without building the project and without generating the jar file using mvn clean install.
Based on the above, the problem boils down to:
How we can resolve the dependencies of the inner modules when you open the project using the parent maven project?
If we can resolve the errors, then we can run without seeing the warning, and we have the assurance that the project is clear before running the mvn clean install command.
I created a Java project in Eclipse Neon. I used Buildship 1.0.21 to import the project as a Gradle project and ran the wrapper and init commands to generate the build, settings and wrapper files.
The project has an empty source folder because I am trying to solve a similar problem on a more complicated project and taking the divide and conquer approach - just add Lombok dependency.
Here is my build.gradle as instructed on the lombok website:
apply plugin: 'java'
dependencies {
compileOnly "org.projectlombok:lombok:1.16.12"
}
and gradle-wrapper.properties if needed:
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-3.2.1-bin.zip /* <--- tried other versions too */
and I ran the jar file to install it on my eclipse. If I add the jar manually via "Java Build Path" it works but I want Gradle to handle this for me. When I refresh the project nothing happens - there is no lombok jar under "Projects and External Dependencies" and code relying on lombok will give errors.
There is another project I have which does have it there and I don't know what I did differently but I know it's possible.
I managed to solve this after trial and error. The build.gradle file must add the jcenter repository:
repositories {
jcenter()
}
Why this is the case and why this is not mentioned anywhere I don't know. But for now this is what works.
The Eclipse IDE for Java Developers (Neon) as well as the default Gradle plugin (Buildship?) are used.
A Gradle Git project was created using the Eclipse IDE. A local JAR is stored within the workspace/ProjectName/lib/nameOfJAR.jar directory. It was added to this project as a dependency, using the following build.gradle configuration.
...
repositories {
// Use 'jcenter' for resolving your dependencies.
// You can declare any Maven/Ivy/file repository here.
jcenter()
flatDir {
dirs 'lib/'
}
}
dependencies {
// The production code uses the SLF4J logging API at compile time
compile 'org.slf4j:slf4j-api:1.7.21'
compile name: 'nameOfJAR'
// Declare the dependency for your favourite test framework you want to use in your tests.
// TestNG is also supported by the Gradle Test task. Just change the
// testCompile dependency to testCompile 'org.testng:testng:6.8.1' and add
// 'test.useTestNG()' to your build script.
testCompile 'junit:junit:4.12'
}
Then Project Explorer > Project A > Gradle > Refresh Gradle Project was used to update the Eclipse GUI, to display this new local dependency, via Project Explorer > Project A > Build Path > Configure Build Path > Libraries > Project and External Dependencies > [Name of JAR].
However, when expanding this section, source attachment, Javadoc location and native library location are shown as non modifiable. Can these be set from the Gradle configuration files?
How can these be set through Eclipse and Gradle?
You can place nameOfJar-sources.jar file next to the actual library in the same directory. Gradle will use that as a source attachment. I suppose the same would work for javadocs, that is nameOfJar-javadoc.jar would be picked up. I don't know how native libs are handled.
This is probably described somewhere in the Gradle docs, but I don't know where to find them.
I have created the Gradle web app which is running inside the NetBeans. Now I want to add some external jar files in it so how can I add the jar from NetBeans.
Modify your Gradle project to add your dependency and refresh it in NetBeans to pick up the changes. There is plenty of documentation how to do it. For example How to add local .jar file dependency to build.gradle file?
If you really need to take that .jar from a local directory,
Add next to your module gradle (Not the app gradle file):
repositories {
flatDir {
dirs 'libs'
}
}
dependencies {
compile name: 'gson-2.2.4'
}
ref:check here
I am working on a Java web project that uses Gradle (version 2.1) as the build dependency tool. I use Eclipse Luna as my IDE. My OS is Mac 10.9 (Mavericks).
This is my build.gradle file (very basic and stripped down for ease of illustration):
apply plugin: 'java'
apply plugin: 'eclipse-wtp'
sourceCompatibility = 1.8
version = '1.0'
repositories {
mavenCentral()
}
dependencies {
compile group: 'com.google.inject', name: 'guice', version: '3.0'
}
So just one dependency, Guice. I will generate my Eclipse classpath and project files using gradle cleanEclipse eclipse. Then I will import an existing project into my workspace. I like being able to view the source code of my dependencies in my Eclipse projects, so I will open a Guice class, such as com.google.inject.Injector, using CMD-SHIFT-T. And voila, the source code of that file will appear.
But I working on a web project, so I need to be able to build a WAR file instead of a JAR file. Therefore, I am going to apply the Gradle War Plugin by replacing apply plugin: 'java' with apply plugin: 'war'. Then I rerun gradle cleanEclipse eclipse and reopen my project.
Now, instead of seeing the source code when I open up Injector, I will see the bytecode viewer with the Attach Source button. Anyone have any ideas whether it's something I'm forgetting in my build.gradle file or if it could be a bug in Gradle/Eclipse?
Note that I am not using the Gradle Integration for Eclipse Plugin because I wish to pinpoint the root cause of this issue without adding an extra layer of complexity to it. I have also checked other SOF questions about Attach Source issue with Gradle and Eclispe, such as how to tell gradle to download all the source jars and Why is Eclipse not attaching 3rd party libs source files to a WTP-faceted Gradle project?, but to no avail.