public interface JarService {
    Boolean loadJarByName(LoadJarDTO dto);
}

 
@Service
@RequiredArgsConstructor
@Slf4j
public class JarServiceImpl implements JarService {
    private final SpringContextUtil springContextUtil;
    @Override
    public Boolean loadJarByName(LoadJarDTO dto) {
        //初始化File-加載jar所在目錄
        File jarFile = new File(dto.getJarPath());
        if (!jarFile.exists()){
            return false;
        }
        List<String> loadClassList = this.getLoadClass(jarFile.getAbsolutePath());
        if (CollectionUtils.isEmpty(loadClassList)){
            return false;
        }
        //加載jar
        ClassLoader classLoader = ClassLoaderUtil.getJarClassLoader(jarFile);
        for (String loadClassPath : loadClassList) {
            Class<?> clazz = null;
            try {
                clazz = classLoader.loadClass(loadClassPath);
            } catch (ClassNotFoundException e) {
                throw new RuntimeException(e);
            }
            if(!this.isLoadClass(clazz)){
                continue;
            }
            //生成需要注冊(cè)到ioc的bean名稱(chēng)
            // clazz.getSimpleName()用于獲取表示該類(lèi)的簡(jiǎn)單名稱(chēng)（不包括包名）。簡(jiǎn)單名稱(chēng)就是類(lèi)名本身，而不帶任何修飾或包的前綴。
            String beanName = getBeanName(dto.getPreBeanName(),clazz.getSimpleName()) ;
            //加載需要加載的
            if (!dto.getIsOverLoad() && springContextUtil.containsBeanDefinition(beanName)){
                continue;
            }
            if (dto.getIsOverLoad() && springContextUtil.containsBeanDefinition(beanName)){
                springContextUtil.unregisterBean(beanName);
            }
            springContextUtil.registerBean(beanName,clazz);
        }
        return true;
    }
    private static String getBeanName(String name, String className) {
        return StringUtils.uncapitalize(name) + StringUtils.capitalize(className);
    }
    private boolean isLoadClass(Class<?> clazz) {
        if (clazz == null){
            return false;
        }
        //是否是接口
        if (clazz.isInterface()){
            return false;
        }
        //是否是抽象類(lèi)
        if (Modifier.isAbstract(clazz.getModifiers())){
            return false;
        }
        if (clazz.getAnnotation(Service.class) != null){
            return true;
        }
        if (clazz.getAnnotation(Component.class) != null){
            return true;
        }
        if (clazz.getAnnotation(Repository.class) != null){
            return true;
        }
        if (clazz.getAnnotation(Configuration.class) != null){
            return true;
        }
        return false;
    }
    private List<String> getLoadClass(String jarPath) {
        Set<String> classPathList = new HashSet<>();
        File file = new File(jarPath);
        //獲取jar的流,打開(kāi)jar文件
        try ( JarInputStream jarInputStream = new JarInputStream(FileUtil.getInputStream(file))){
            //逐個(gè)獲取jar種文件
            JarEntry jarEntry = jarInputStream.getNextJarEntry();
            //遍歷
            while (jarEntry != null){
                //獲取文件路徑
                String name = jarEntry.getName();
                if (name.endsWith(".class")){
                    String classNamePath = name.replace(".class", "").replace("/",".");
                    classPathList.add(classNamePath);
                }
                jarEntry = jarInputStream.getNextJarEntry();
            }
        } catch (IOException e) {
            log.error(e.getMessage());
            throw new RuntimeException("獲取加載類(lèi)路徑失敗");
        }
        return new ArrayList<>(classPathList);
    }
}

@Service
public class CalculateServiceImpl implements CalculateService {
    @Override
    public int add(int a, int b) {
        return a + b;
    }
    @Override
    public int minus(int a, int b) {
        return a - b;
    }
}

public interface CalculateService {
    int add(int a,int b);
    int minus(int a ,int b);
}

    @GetMapping("/calculate/{beanName}/{a}/")
    private Integer calculate( @PathVariable(value = "beanName") String beanName,
            @PathVariable(value = "a") Integer a, @PathVariable("b") Integer b){
        return jarService.calculate(beanName,a,b);
    }
 @Override
    public Integer calculate(String beanName, Integer a, Integer b) {
        CalculateService calculateService = SpringContextUtil.getBean(getBeanName(beanName,beanName+"Impl"), CalculateService.class);
        int add = calculateService.add(a, b);
        return add;
    }
    private static String getBeanName(String name, String className) {
        return StringUtils.uncapitalize(name) + StringUtils.capitalize(className);
    }