在WildFly和OpenShift上的WebSocket聊天

聊天是解释WebSocket的最典型示例之一。它是一个相当常用的界面，可以很容易地解释WebSocket的基本概念。当然，Java EE 7 WebSocket也有一个，在这里可用！您可以使用以下步骤在WildFly上轻松运行它：

curl -O http://download.jboss.org/wildfly/8.1.0.Final/wildfly-8.1.0.Final.zip
unzip wildfly-8.1.0.Final.zip
./wildfly-8.1.0.Final/bin/standalone.sh
git clone https://github.com/javaee-samples/javaee7-samples.git
cd javaee7-samples
mvn -f websocket/chat/pom.xml wildfly:deploy

然后访问http：// localhost：8080 / chat / 。

WebSocket的最大优点之一是如何在与HTTP（在本例中为8080）相同的端口上打开套接字。如果要将此应用程序部署到OpenShift，则可以在端口8000上使用WebSocket进行常规访问，而在端口8443上进行安全访问。下图对此进行了解释：

openshift-websocket-routing

如果要在OpenShift上运行此聊天应用程序，请使用以下步骤：

单击此处在OpenShift中配置WildFly实例。将名称更改为“ chatserver”，并将其他所有名称更改为默认值。单击“创建应用程序”以创建应用程序。

克隆工作空间：

git clone ssh://544f08a850044670df00009e@chatserver-milestogo.rhcloud.com/~/git/chatserver.git/

从以下位置编辑“ javaee7-samples / websocket / chat / src / main / webapp / websocket.js”的第一行：

var wsUri = "ws://" + document.location.hostname + ":" + document.location.port + document.location.pathname + "chat";

至：

var wsUri = "ws://" + document.location.hostname + ":8000" + document.location.pathname + "chat";

创建WAR文件：

cd javaee7-samples
mvn -f websocket/chat/pom.xml

将生成的WAR文件复制到先前克隆的工作空间中：

cd ..
cp javaee7-samples/websocket/chat/target/chat.war chatserver/deployments/ROOT.war

删除现有文件并将WAR文件添加到git存储库中：

cd chatserver
git rm -rf src pom.xml
git add deployments/ROOT.war
git commit . -m"updating files"
git push

这将输出显示为：

Counting objects: 6, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (4/4), done.
Writing objects: 100% (4/4), 6.88 KiB | 0 bytes/s, done.
Total 4 (delta 1), reused 0 (delta 0)
remote: Stopping wildfly cart
remote: Sending SIGTERM to wildfly:285130 ...
remote: Building git ref 'master', commit 05a7978
remote: Preparing build for deployment
remote: Deployment id is 14bcec20
remote: Activating deployment
remote: Deploying WildFly
remote: Starting wildfly cart
remote: Found 127.2.87.1:8080 listening port
remote: Found 127.2.87.1:9990 listening port
remote: /var/lib/openshift/544f08a850044670df00009e/wildfly/standalone/deployments /var/lib/openshift/544f08a850044670df00009e/wildfly
remote: /var/lib/openshift/544f08a850044670df00009e/wildfly
remote: CLIENT_MESSAGE: Artifacts deployed: ./ROOT.war
remote: -------------------------
remote: Git Post-Receive Result: success
remote: Activation status: success
remote: Deployment completed with status: success
To ssh://544f08a850044670df00009e@chatserver-milestogo.rhcloud.com/~/git/chatserver.git/
454bba9..05a7978  master -> master

现在，您的聊天服务器位于： http : //chatserver-milestogo.rhcloud.com ，看起来像：

techtip51-websocket-聊天输出