如何使用ClassHunter和Java 9或更高版本查找实现一个或多个接口的所有类？

Question

在网络上，我发现here此示例检索了类路径的所有类：

import java.util.Collection;

import org.burningwave.core.assembler.ComponentContainer;
import org.burningwave.core.assembler.ComponentSupplier;
import org.burningwave.core.classes.CacheableSearchConfig;
import org.burningwave.core.classes.ClassHunter;
import org.burningwave.core.classes.ClassHunter.SearchResult;
import org.burningwave.core.classes.SearchConfig;
import org.burningwave.core.io.PathHelper;

public class Finder {

    public Collection<Class<?>> find() {
        ComponentSupplier componentSupplier = ComponentContainer.getInstance();
        PathHelper pathHelper = componentSupplier.getPathHelper();
        ClassHunter classHunter = componentSupplier.getClassHunter();

        CacheableSearchConfig searchConfig = SearchConfig.forPaths(
            //Here you can add all absolute path you want:
            //both folders, zip and jar will be recursively scanned.
            //For example you can add: "C:\\Users\\user\\.m2"
            //With the row below the search will be executed on runtime Classpaths
            pathHelper.getMainClassPaths()
        );

        SearchResult searchResult = classHunter.findBy(searchConfig);
        return searchResult.getClasses();
    }

}

...因此，有人知道如何通过使用ClassHunter和Java 9或更高版本来检索实现一个或多个接口的所有类吗？

Answer 1

如果您在页面右侧的菜单中看起来更好，则表明this other example确实可以满足您的要求：

import java.io.Closeable;
import java.io.Serializable;
import java.util.Collection;

import org.burningwave.core.assembler.ComponentContainer;
import org.burningwave.core.assembler.ComponentSupplier;
import org.burningwave.core.classes.ClassCriteria;
import org.burningwave.core.classes.CacheableSearchConfig;
import org.burningwave.core.classes.ClassHunter;
import org.burningwave.core.classes.ClassHunter.SearchResult;
import org.burningwave.core.classes.SearchConfig;
import org.burningwave.core.io.PathHelper;

public class Finder {

    public Collection<Class<?>> find() {
        ComponentSupplier componentSupplier = ComponentContainer.getInstance();
        PathHelper pathHelper = componentSupplier.getPathHelper();
        ClassHunter classHunter = componentSupplier.getClassHunter();

        CacheableSearchConfig searchConfig = SearchConfig.forPaths(
            //Here you can add all absolute path you want:
            //both folders, zip and jar will be recursively scanned.
            //For example you can add: "C:\\Users\\user\\.m2"
            //With the row below the search will be executed on runtime Classpaths
            pathHelper.getMainClassPaths()
        ).by(
            ClassCriteria.create().byClasses((uploadedClasses, currentScannedClass) ->
                //[1]here you recall the uploaded class by "useClasses" method.
                //In this case we're looking for all classes that implement
                //java.io.Closeable or java.io.Serializable
                uploadedClasses.get(Closeable.class).isAssignableFrom(currentScannedClass) ||
                uploadedClasses.get(Serializable.class).isAssignableFrom(currentScannedClass)
            ).useClasses(
                //With this directive we ask the library to load one or more classes 
                //to be used for comparisons:
                //it serves to eliminate the problem that a class, loaded by different
                //class loaders, turns out to be different for the 
                //comparison operators (e.g. the isAssignableFrom method).
                //If you call this method, you must retrieve the uploaded class 
                //in all methods that support this feature like the method at the point[1]
                Closeable.class,
                Serializable.class
            )
        );

        SearchResult searchResult = classHunter.findBy(searchConfig);
        return searchResult.getClasses();
    }

}