我在Weblogic 12.1.3服务器上运行Spring 3.1.2后端。为了接受WebSocket连接,我的配置如下:
public class SpringConfigurator extends Configurator {
private static final Logger LOGGER = LoggerFactory.make();
private static final Map<String, Map<Class<?>, String>> cache = new ConcurrentHashMap<String, Map<Class<?>, String>>();
private static final String MAGIC_STR = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
private static final String NO_VALUE = ObjectUtils.identityToString(new Object());
@SuppressWarnings("unchecked")
@Override
public <T> T getEndpointInstance(Class<T> endpointClass) throws InstantiationException {
WebApplicationContext wac = ContextLoader.getCurrentWebApplicationContext();
if (wac == null) {
String message = "Failed to find the root WebApplicationContext. Was ContextLoaderListener not used?";
LOGGER.error(message);
throw new IllegalStateException(message);
}
String beanName = ClassUtils.getShortNameAsProperty(endpointClass);
if (wac.containsBean(beanName)) {
T endpoint = wac.getBean(beanName, endpointClass);
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("Using @ServerEndpoint singleton " + endpoint);
}
return endpoint;
}
Component annot = AnnotationUtils.findAnnotation(endpointClass, Component.class);
if ((annot != null) && wac.containsBean(annot.value())) {
T endpoint = wac.getBean(annot.value(), endpointClass);
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("Using @ServerEndpoint singleton " + endpoint);
}
return endpoint;
}
beanName = getBeanNameByType(wac, endpointClass);
if (beanName != null) {
return (T) wac.getBean(beanName);
}
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("Creating new @ServerEndpoint instance of type " + endpointClass);
}
return wac.getAutowireCapableBeanFactory().createBean(endpointClass);
}
// modifyHandshake() is called before getEndpointInstance()
@Override
public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
super.modifyHandshake(sec, request, response);
}
private String getBeanNameByType(WebApplicationContext wac, Class<?> endpointClass) {
String wacId = wac.getId();
Map<Class<?>, String> beanNamesByType = cache.get(wacId);
if (beanNamesByType == null) {
beanNamesByType = new ConcurrentHashMap<Class<?>, String>();
cache.put(wacId, beanNamesByType);
}
if (!beanNamesByType.containsKey(endpointClass)) {
String[] names = wac.getBeanNamesForType(endpointClass);
if (names.length == 1) {
beanNamesByType.put(endpointClass, names[0]);
} else {
beanNamesByType.put(endpointClass, NO_VALUE);
if (names.length > 1) {
String message = "Found multiple @ServerEndpoint's of type " + endpointClass + ", names=" + names;
LOGGER.error(message);
throw new IllegalStateException(message);
}
}
}
String beanName = beanNamesByType.get(endpointClass);
return NO_VALUE.equals(beanName) ? null : beanName;
}
}
问题在于当我尝试通过 JavaScript 客户端打开 WebSocket 连接时,它会正确生成响应头。我已经在此位置进行了调试。
@Override
public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
super.modifyHandshake(sec, request, response);
}
但是在客户端上,它会出现以下错误:
WebSocket连接到'ws://localhost:7001/websocket'失败:WebSocket握手期间出错:无效的状态行
在Chrome开发工具中,响应如下所示:
HTTP/0.9 200 OK
我认为某种方式的http请求没有升级到websocket连接。
我真的很感激对这个问题的任何帮助。
request.getRequestDispatcher("/websocket").forward(httpServletRequest, httpServletResponse);
这不是最好的解决方案,但它暂时解决了问题。 - iozgen