1. Problem background
Some friends are using Lombok (especially@DataWhen you are noted, you may encounter similar compilation exceptions:
Error:(2048,1024) java: Symbol not found
Usually this error message does not point to Lombok intuitively, but makes people think that there is something wrong with the JDK or project dependency environment. After further investigation, it will be found that the root cause of the error isLombok generates Getter/Setter methods conflict or fail to generate normally。
2. The root cause
Naming of fields with inconsistent case
Lombok is dealing withField case inconsistentSituation (for example:Libin9iOakandlibin9ioak) is prone to occurNo corresponding Getter/Setter was generated, which leads to an exception of “not found symbols” during the compilation stage.
This is one known in Lombokbug, occasionally appears in some versions of Lombok.Not following programming specifications
In Java programming specifications, field naming is generally recommended.LowerCamelCaseorFull capital constants (SNAKE_CASE)way. If project members do not follow the unified specification, it is easy to cause conflicts or confusion in naming, which will trigger Lombok bugs.
Example fields:
private String Libin9iOak; private String libin9ioak;
The above example is a typical example of irregular naming. Once a conflict occurs during the process of automatically generating the Lombok method, it may cause compilation failure.
3. Solution
3.1 Handwriting Getter/Setter
When Lombok fails to generate Getter/Setter normally, the most direct way is to write these methods manually.
Example:
// Originally, @Data might have used Lombok to automatically generate// private String Libin9iOak;
// private String libin9ioak;
// Add the corresponding Getter/Setter manuallypublic String getLibin9iOak() {
return Libin9iOak;
}
public void setLibin9iOak(String Libin9iOak) {
this.Libin9iOak = Libin9iOak;
}
public String getLibin9ioak() {
return libin9ioak;
}
public void setLibin9ioak(String libin9ioak) {
this.libin9ioak = libin9ioak;
}
After handwriting Getter/Setter, compile again. If you no longer rely on Lombok to generate automatically, you can basically avoid compilation errors caused by such case conflicts.
3.2 Remove@DataNote
If there are not many other fields in the project, you can consider removing them directly.@DataAnnotation to avoid Lombok handling conflicting fields.
After removal, you also need to add a handwritten Getter/Setter to the corresponding fields to ensure the integrity of the function.
3.3 Unified naming specifications
- Recommended practices: In the initial stage of the project, it shouldUnified field naming specifications, avoid case confusing or excessive similarity of field names.
- benefit: It can not only avoid potential conflicts in Lombok, but also facilitate team collaboration and code maintenance.
Example naming specification:
- Follow the small camel: private String libin9iOak;
- If a constant is needed, use full capital + underscore: private static final String SOME_CONSTANT = "CONSTANT";
4. Summary
- Lombok's bug: When handling case conflict fields, Getter/Setter may not be generated normally, resulting in a compilation error of "Symbol Not Found".
-
Solution：
- Write Getter/Setter manually.
- Remove
@DataAnnotation to avoid Lombok generating duplicate methods. - Unified naming specifications,Avoid case conflicts from the source。
When encountering such compilation errors, first check whether the field naming is standardized. If there is case conflict, you can try the above method to quickly locate and fix the problem.
I hope this article can help you quickly resolve the compilation problems caused by inconsistent case of Lombok fields, and restore your project's compilation to normal!
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