WebLogic 12：websocket 握手异常 (500)：禁用异步支持

Question

错误是：

org.springframework.web.socket.server.HandshakeFailureException: Error during handshake: http://2.12.85.0:6/eto/tvoy; nested exception is java.lang.IllegalStateException: The async-support is disabled on this request: weblogic.servlet.internal.ServletRequestImpl

服务器：WebLogic 12。它在我尝试连接到 websocket 时出现。

我的web.xml:

    <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:applicationContext.xml
        </param-value>
    </context-param>

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--Позволяет работать с русскими символами-->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter>
        <filter-name>AFilter</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
        <async-supported>true</async-supported>
    </filter>
    <filter-mapping>
        <filter-name>AFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

我的 webSocketConfig：

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;

@Configuration
@EnableWebSocket
@EnableAsync
public class WebSocketConfig implements WebSocketConfigurer {
    private static final Logger log = LoggerFactory.getLogger("webSocketLogger");
    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        log.error("registerWebSocketHandlers");
        registry.addHandler(webSocketHandler(), "/chat").setAllowedOrigins("*");
    }

    @Bean
    public WebSocketHandler webSocketHandler() {
        return new workspace.websocket.controller.WebSocketHandler();
    }

}

我的 websocket 处理程序：

public class WebSocketHandler implements org.springframework.web.socket.WebSocketHandler {
    private static final Logger log = LoggerFactory.getLogger("webSocketLogger");

    @Override
    public void afterConnectionEstablished(WebSocketSession webSocketSession) throws Exception {

    }

    @Override
    public void handleMessage(WebSocketSession webSocketSession, WebSocketMessage<?> webSocketMessage) throws Exception {

    }


    @Override
    public void handleTransportError(WebSocketSession webSocketSession, Throwable throwable) throws Exception {
        log.error("transport error", throwable);
    }

    @Override
    public void afterConnectionClosed(WebSocketSession webSocketSession, CloseStatus closeStatus) throws Exception {
    }

    @Override
    public boolean supportsPartialMessages() {
        return false;
    }
}

我该怎么办？

Answer 1

对于使用异步功能的应用程序，整个请求处理链必须通过注释或在其部署描述符中设置此属性。如果应用程序尝试启动异步操作并且请求处理链中存在不支持异步处理的 servlet 或 servlet 过滤器，则会抛出 IllegalStateException。因此，要解决此问题，必须为过滤器集添加一个附加元素：

<async-supported>true</async-supported>

在您的 web.xml 中，您缺少此编码过滤器。所以你的编码过滤器配置应该是这样的：

    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>            
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>            
    </filter>

WebLogic 12：websocket 握手异常 (500)：禁用异步支持

WebLogic 12: websocket handshake excetion (500): The async-support is disabled

java

spring

asynchronous

weblogic

websocket