IntelliJ IDEA cannot see Lombok generated code

问题:

I have a Gradle-based project that uses lombok. I have imported this project into IntelliJ IDEA 14.1 (using the Import External Model import method). I can run the JUnit4 unit tests without problem in Gradle, but IntelliJ seems to have a problem seeing the Lombok generated Getters. This is preventing me from running the tests in IDEA.

To make sure it wasn't a set up issue, I created a Very simple project and confirmed that the same issue occurs in the simple test project.

My versions: Gradle: gradle-2.3-all via Gradle wrapper
Intellij IDEA: IU-141.713
Lombok Plugin: 0.9.2

What am I missing here?

Update By cannot see I don't mean physically invisible. I mean this:

/home/meeee/workspace/junit-lombok-idea/lib/src/main/java/com/example/jumbokea/Main.java
Error:(10, 11) java: cannot find symbol
  symbol:   method setIntField(int)
  location: variable sc of type com.example.jumbokea.SomeClass
Error:(12, 41) java: cannot find symbol
  symbol:   method getIntField()
  location: variable sc of type com.example.jumbokea.SomeClass
Error:(14, 33) java: constructor AnotherClass in class com.example.jumbokea.AnotherClass cannot be applied to given types;
  required: no arguments
  found: float,com.example.jumbokea.SomeClass
  reason: actual and formal argument lists differ in length
Error:(16, 46) java: cannot find symbol
  symbol:   method getSomeFloat()
  location: variable ac of type com.example.jumbokea.AnotherClass
Error:(17, 43) java: cannot find symbol
  symbol:   method getSomeClass()
  location: variable ac of type com.example.jumbokea.AnotherClass

The decompiled classes show the getters and setters, but I'm getting these errors when I get IntelliJ to run the 'app' or the Unit tests.

回答1:

You need to enable the annotation preprocessor. See documentation here.

Additionally you should install the lombok plugin if not done already

回答2:

I managed to solve this issue by doing the following:

• Install the IDEA Lombok plugin
• Enable Annotation Processing see documentation
• Install the Latest Maven on your system and configure IntelliJ to use it (as opposed to the bundled one) see documentation

回答3:

It can be seen in the build folder.

回答4:

In my case the issue occurred after updating IntelliJ via Toolbox.

"Enable annotation processing" flag was switched off (despite importing the settings from previous IntelliJ version), so I switched it on. This did not resolve the issue after restart, clean, build.

However, resintalling the lombok plugin helped!

EDIT: Seems that it was the problem with compatibility of lombok plugin with IntelliJ 2018.1, plugin upgrade to 0.17 is required for IntelliJ users.

Lombok plugin changelog excerpt:

Lombok support plugin updated to v0.17: - Fixed (#465): Fix plugin compatibility with IntelliJ 2018.1

回答5:

In case of Lombok, IntelliJ allows you to search for usages of variable, which will also include getters and setters. Just click variable name and option/alt + f7.

This works in Intellij 2016 and Lombok plugin 0.13.16. I am not sure about older versions.

回答6:

After enabled the annotation processor and installed lombok plugin, if still got "can't find symbol error" on lombok generated method, try check the gradle configuration, which is in

Preference -> Build,Execution, Deployment -> Gradle,

if you are using local gradle distribution, change to use default gradle wrapper.

I got this error when my project's gradle wrapper is 4.10.2 but my local gradle version is 5.1.1, and I solve it after I change it to use default gradle wrapper.

回答7:

As mentioned in the other answer, please, install the Lombok plugin and enable the annotation processor. Press double SHIFT in the IntelliJ and type Enable annotation processing in the search box. Afterward, tick the box and restart the IDE.