docs 补充Undertow自定义配置信息注释
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@ -18,18 +18,35 @@ import org.springframework.core.task.VirtualThreadTaskExecutor;
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@AutoConfiguration
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public class UndertowConfig implements WebServerFactoryCustomizer<UndertowServletWebServerFactory> {
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/**
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* 自定义 Undertow 配置
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* <p>
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* 主要配置内容包括:
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* 1. 配置 WebSocket 部署信息
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* 2. 在虚拟线程模式下使用虚拟线程池
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* 3. 禁用不安全的 HTTP 方法,如 CONNECT、TRACE、TRACK
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* </p>
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*
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* @param factory Undertow 的 Web 服务器工厂
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*/
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@Override
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public void customize(UndertowServletWebServerFactory factory) {
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factory.addDeploymentInfoCustomizers(deploymentInfo -> {
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// 配置 WebSocket 部署信息,设置 WebSocket 使用的缓冲区池
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WebSocketDeploymentInfo webSocketDeploymentInfo = new WebSocketDeploymentInfo();
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webSocketDeploymentInfo.setBuffers(new DefaultByteBufferPool(true, 1024));
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deploymentInfo.addServletContextAttribute("io.undertow.websockets.jsr.WebSocketDeploymentInfo", webSocketDeploymentInfo);
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// 使用虚拟线程
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// 如果启用了虚拟线程,配置 Undertow 使用虚拟线程池
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if (SpringUtils.isVirtual()) {
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// 创建虚拟线程池,线程池前缀为 "undertow-"
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VirtualThreadTaskExecutor executor = new VirtualThreadTaskExecutor("undertow-");
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// 设置虚拟线程池为执行器和异步执行器
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deploymentInfo.setExecutor(executor);
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deploymentInfo.setAsyncExecutor(executor);
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}
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// 配置禁止某些不安全的 HTTP 方法(如 CONNECT、TRACE、TRACK)
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deploymentInfo.addInitialHandlerChainWrapper(handler -> {
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// 禁止三个方法 CONNECT/TRACE/TRACK 也是不安全的 避免爬虫骚扰
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HttpString[] disallowedHttpMethods = {
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@ -37,6 +54,7 @@ public class UndertowConfig implements WebServerFactoryCustomizer<UndertowServle
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HttpString.tryFromString("TRACE"),
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HttpString.tryFromString("TRACK")
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};
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// 使用 DisallowedMethodsHandler 拦截并拒绝这些方法的请求
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return new DisallowedMethodsHandler(handler, disallowedHttpMethods);
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});
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});
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