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学习网站开发心得2023疫情最新情况

wzjs 2025/8/7 16:09:51

学习网站开发心得,2023疫情最新情况,网站开发都有哪些,绵阳微网站制作网上也找到类似的文章，但是基本都不到实用级别，就是不能直接用。在参照网上的文章及与AI沟通N次后终于完善可以在实际项目上创建jar文件动态加载类 Component Slf4j public class PluginRegistry {Autowiredprivate GenericApplicationContext applicat…

网上也找到类似的文章，但是基本都不到实用级别，就是不能直接用。在参照网上的文章及与AI沟通N次后终于完善可以在实际项目上

创建jar文件动态加载类


@Component
@Slf4j
public class PluginRegistry {@Autowiredprivate GenericApplicationContext applicationContext;@Autowiredprivate RequestMappingHandlerMapping requestMappingHandlerMapping;private final Map<String, URLClassLoader> loaders = new ConcurrentHashMap<>();public void loadPlugin(String jarPath) throws Exception {// 将 JAR 文件转换为 URLFile jarFile = new File(jarPath);if (!jarFile.exists()) {throw new IllegalArgumentException("JAR file not found: " + jarPath);}URL jarUrl = jarFile.toURI().toURL();URLClassLoader classLoader = new URLClassLoader(new URL[]{jarUrl},Thread.currentThread().getContextClassLoader());Thread.currentThread().setContextClassLoader(classLoader);ClassPathScanningCandidateComponentProvider scanner =new ClassPathScanningCandidateComponentProvider(false);scanner.addIncludeFilter(new AnnotationTypeFilter(Component.class));Set<BeanDefinition> candidateComponents =scanner.findCandidateComponents("com.snail.model"); // 替换为目标包路径// 注册扫描到的 Controller 到 Spring 容器BeanDefinitionRegistry registry = (BeanDefinitionRegistry) applicationContext.getAutowireCapableBeanFactory();for (org.springframework.beans.factory.config.BeanDefinition bd : candidateComponents) {String className = bd.getBeanClassName();Class<?> clazz = classLoader.loadClass(className);applicationContext.registerBean(clazz);}requestMappingHandlerMapping.afterPropertiesSet();log.info("加载插件成功{}",requestMappingHandlerMapping.getHandlerMethods().size());loaders.put(jarPath, classLoader);}
}