1、跨域问题

经查阅官方文档springwebsocket 4.1.5版本前默认支持跨域访问，之后的版本默认不支持跨域，需要设置

.setAllowedOrigins("*")

@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
	registry.addHandler(myWebSocketHandler(), "/echo.do").setAllowedOrigins("*").addInterceptors(new HandshakeInterceptor()); 
																											// �ķ�������
	registry.addHandler(myWebSocketHandler(), "/echo").setAllowedOrigins("*").addInterceptors(new HandshakeInterceptor())
				.withSockJS(); 
}

2、*.do配置导致sockjs失效问题

web.xml中添加如下配置

 <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/sockjs/*</url-pattern>
  </servlet-mapping>

websocket配置类中路径中不加sockjs

registry.addHandler(myWebSocketHandler(), "/echo").setAllowedOrigins("*").addInterceptors(new HandshakeInterceptor())
.withSockJS();

前端调用时应加上sockjs

websocket = new SockJS("http://127.0.0.1:8080/WebSocketTest001 /sockjs/echo");

3、filter和servlet配置

web.xml中所有filter和servlet都需要添加如下配置项

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

http://download.csdn.net/detail/dong_19890208/9715594

原文链接：https://blog.csdn.net/dong_19890208/article/details/53741927