I use jdk17 load graphhopper , when use idea run project is ok , but when package jar , call server will no paths and error

Open Source Routing Engine
1

Error: Cannot compile expression, in source: File ‘source’, Line 1, Column 50: A class “com.graphhopper.routing.weighting.custom.CustomWeightingHelper” could not be found

2

How did you package the jar?

If you do not need to modify the source code you can download the jar as suggested here.

3

I apologize for any confusion in my previous expression. I have integrated GraphHopper into my Spring Boot project. When I start Spring Boot in IntelliJ IDEA, it works normally. However, when I package it into a JAR file and call the routing service, I encounter the following error:

Cannot compile expression, in source: File ‘source’, Line 1, Column 50: A class “com.graphhopper.routing.weighting.custom.CustomWeightingHelper” could not be found

I’m not sure if this is due to my configuration. I did not use an external yml file but instead loaded GraphHopper directly via JavaBean configuration. My setup is as follows:
private String osmFile;

@Bean
public GraphHopper graphHopper(){
    return initGraphHopper();
}


private GraphHopper initGraphHopper() {
    GraphHopper graphHopper = new GraphHopper();
    graphHopper.setOSMFile(osmFile);
    graphHopper.setGraphHopperLocation("graph_cache");

    CustomModel customModel =   new CustomModel();
    customModel.setDistanceInfluence(90D);
    customModel.addToSpeed(
            Statement.If("true",
                    Statement.Op.LIMIT,
                    "car_average_speed"));
    customModel.addToPriority(Statement.If("!car_access", Statement.Op.MULTIPLY,"0"));
     graphHopper.setProfiles(new Profile("car").setCustomModel(customModel));
    graphHopper.setEncodedValuesString("car_access, car_average_speed");
    graphHopper.setPreciseIndexResolution(500);
    graphHopper.importOrLoad();
    log.info("[init-graph hopper] route server load completed ！！！");
    return  graphHopper;
}

}

4

You’ll need to include the jar via maven or gradle. See the snippet for maven here.

5

sorry. my bad
The issue has been resolved. I’m not entirely sure if this qualifies as a bug, but the root cause was my use of CompletableFuture , which led to Janino’s reflection failure after Spring Boot packaging. Thank you for your assistance!

6

Any more details about this? Maybe a reproducer with a simple spring boot project?