我想用耳朵项目做集群。我找到了一种使用standalone-ha.xml 配置在集群中独立运行的解决方案。我跟着下面的文章。它工作正常。 使用 wildfly9 在域模式下进行集群 但我想运行具有耳朵和有状态 ejb 的 ERP 项目。所以我以独立模式运行集群。
我有两台机器的 ip 不同,例如
1.10.10.10.10 节点1
- 20.20.20.20 节点2
两台机器都有wildfly9,出于测试目的,我创建了一个带有Web组件的示例有状态ejb项目。
我运行服务器的命令是:
standalone.bat -c standalone-ha.xml -b 10.10.10.10 -u 230.0.0.4 -Djboss.node.name=node1
和
./standalone.sh -c standalone-ha.xml -b 20.20.20.20 -u 230.0.0.4 -Djboss.node.name=node2
我的项目 Test.war 有有状态的 ejb 和 servlet 和 jsp 。1)Bank.java 是有状态的ejb,它实现了远程和本地接口
@Stateful(passivationCapable=true)
public class Bank implements BankRemote,BankLocal {
private int amount=0;
@Override
public boolean withdraw(int amount) {
if(amount<=this.amount){
this.amount-=amount;
return true;
}else{
return false;
}
}
@Override
public void deposit(int amount) {
this.amount+=amount;
}
@Override
public int getBalance() {
return amount;
}}
2)OpenAccount.java 是servlet
@WebServlet("/OpenAccount")
public class OpenAccount extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try{
HttpSession bankSession = request.getSession();
BankRemote bank = (BankRemote) bankSession.getAttribute("remote");
if(bank == null)
{
System.out.println("Session is Null So initialized with new session");
Properties p = new Properties();
/*p.put("jboss.naming.client.ejb.context", true);*/
p.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
InitialContext context=new InitialContext();
BankRemote b=(BankRemote)context.lookup("java:global/Test/Bank!com.ejb.BankRemote");
request.getSession().setAttribute("remote",b);
}
else
{
System.out.println("Session is present id is :["+bankSession.getId()+"]");
}
request.getRequestDispatcher("/operation.jsp").forward(request, response);
}
catch(Exception e){System.out.println(e);}
3)index.jsp 是主页包含以下单行重定向到 servlet
<a href="OpenAccount">Open Account</a>
4)从servlet转发的operation.jsp是:
<body>
<form action="operationprocess.jsp">
Enter Amount:<input type="text" name="amount"/><br>
Choose Operation:
Deposit<input type="radio" name="operation" value="deposit"/>
Withdraw<input type="radio" name="operation" value="withdraw"/>
Check balance<input type="radio" name="operation" value="checkbalance"/>
<br>
<input type="submit" value="submit">
</form>
</body>
4) operationprocess.jsp 是
<body>
<%
try
{
BankRemote remote=(BankRemote)session.getAttribute("remote");
String operation=request.getParameter("operation");
String amount=request.getParameter("amount");
if(remote != null)
{if(operation!=null){
try{
if(operation.equals("deposit"))
{
remote.deposit(Integer.parseInt(amount));
out.print("Amount successfully deposited!");
}
else
{
if(operation.equals("withdraw")){
boolean status=remote.withdraw(Integer.parseInt(amount));
if(status){
out.print("Amount successfully withdrawn!"); }
else{
out.println("Enter less amount"); }
}else{
out.println("Current Amount: "+remote.getBalance());
}
}
}catch(NumberFormatException numex){
out.println("Number is not valid");}
}
}
else
{out.print("Session is null"); }
}catch(Exception ee){
System.out.println("in jsp exception");
ee.printStackTrace();}
%>
<hr/>
<jsp:include page="operation.jsp"></jsp:include>
</body>
5)web.xml 包含
<distributable/>
启用集群的标签。
6) 类路径也有 jboss-ejb-client.properties
remote.clusters=ejb
remote.cluster.ejb.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS=false
remote.cluster.ejb.connect.options.org.xnio.Options.SSL_ENABLED=false
有了所有这些,我在两个服务器上都部署了 Test.war 并尝试使用 apache_mode_cluster 即 10.10.10.10/Test/ 进行访问。它正在调用 ejb 并给我输出但是当
1)我关闭 10.10.10.10 服务器并刷新浏览器(不清除浏览器历史记录以维护会话),那时它给了我错误,例如可分发容器不适用于相同的应用程序。
2) 10.10.10.10 已关闭,我清除历史记录并再次访问 url 10.10.10.10/测试它重定向到 20.20.20.20 服务器即 node2 并成功运行。但是会话没有被复制。
请帮我。Standalone-ha.xml -- 子系统 infinispan 是:
<cache-container name="server" default-cache="default" module="org.wildfly.clustering.server" aliases="singleton cluster">
<transport lock-timeout="60000"/>
<replicated-cache name="default" mode="SYNC">
<transaction mode="BATCH"/>
</replicated-cache>
</cache-container>
<cache-container name="web" default-cache="dist" module="org.wildfly.clustering.web.infinispan">
<transport lock-timeout="60000"/>
<distributed-cache name="dist" mode="ASYNC" owners="2" l1-lifespan="0">
<locking isolation="REPEATABLE_READ"/>
<transaction mode="BATCH"/>
<file-store/>
</distributed-cache>
</cache-container>
<cache-container name="ejb" default-cache="dist" module="org.wildfly.clustering.ejb.infinispan" aliases="sfsb">
<transport lock-timeout="60000"/>
<distributed-cache name="dist" mode="ASYNC" owners="2" l1-lifespan="0">
<locking isolation="REPEATABLE_READ"/>
<transaction mode="BATCH"/>
<file-store/>
</distributed-cache>
</cache-container>