使用Java筛选对Windows Azure服务总线主题的订阅
我想在Java应用程序中使用带有订阅筛选器的Windows Azure服务总线主题。我正在使用和Windows Azure SDK 2.0 我发现微软网站上显示如何使用JavaAPI实现这一点的页面不起作用 基本示例代码应该如何使用API从Java应用程序以编程方式完成以下任务 1) 获取现有命名空间中现有“TestTopic”的ServiceBusContract对象 2) 使用默认的MatchAll筛选器创建“AllMessages”订阅。此订阅接收发送到其虚拟队列中“TestTopic”的所有消息使用Java筛选对Windows Azure服务总线主题的订阅,azure,servicebus,Azure,Servicebus,我想在Java应用程序中使用带有订阅筛选器的Windows Azure服务总线主题。我正在使用和Windows Azure SDK 2.0 我发现微软网站上显示如何使用JavaAPI实现这一点的页面不起作用 基本示例代码应该如何使用API从Java应用程序以编程方式完成以下任务 1) 获取现有命名空间中现有“TestTopic”的ServiceBusContract对象 2) 使用默认的MatchAll筛选器创建“AllMessages”订阅。此订阅接收发送到其虚拟队列中“TestTopic”的
3) 使用SqlFilter筛选器创建“LowMessages”订阅,以筛选“MessageNumber”。在从Azure门户获取默认管理凭据(如我的应用程序中所述)后,我能够为我的服务总线命名空间获取ServiceBusContract对象,如下所示:
public class Service
{
private Configuration config;
public Service()
{
String namespace = "jasper";
String issuer = "owner";
String key = "BB9BB9BBBbBBBbBbbBBbB99SS9b+Bb9BbB+bbBBbBB9=";
String serviceBusRootUri = ".servicebus.windows.net";
String wrapRootUri = "-sb.accesscontrol.windows.net/WRAPv0.9";
this.config = ServiceBusConfiguration.configureWithWrapAuthentication(
namespace,
issuer,
key,
serviceBusRootUri,
wrapRootUri);
}
public ServiceBusContract getservice()
{
ServiceBusContract service = ServiceBusService.create(config);
return service;
}
}
然后,可以使用以下Java代码创建对“TestTopic”主题的三个订阅。“TestTopic”必须已经存在于“jasper”命名空间中。“AllMessages”订阅是默认订阅,并接收发送到该主题的所有消息。“LowMessages”和“HighMessages”订阅使用SqlFilter规则根据MessageNumber自定义属性的值筛选邮件。原始示例代码忽略了提供规则名称和删除默认规则的必要性。如果不删除默认规则,订阅仍将接收所有邮件
public class Make_sub_rule
{
public static void main(String[] args) throws ServiceException {
Service creds = new Service();
ServiceBusContract service = creds.getservice();
SubscriptionInfo subInfo = new SubscriptionInfo("AllMessages");
service.createSubscription("TestTopic", subInfo);
System.out.println(subInfo.getName() + " Default Rules");
SubscriptionInfo subInfo1 = new SubscriptionInfo("LowMessages");
CreateSubscriptionResult result1 = service.createSubscription("TestTopic", subInfo1);
RuleInfo ruleInfo1 = new RuleInfo("RULENAME1");
ruleInfo1 = ruleInfo1.withSqlExpressionFilter("MessageNumber <= 3");
CreateRuleResult ruleResult1 =
service.createRule("TestTopic", "LowMessages", ruleInfo1);
service.deleteRule("TestTopic", "LowMessages", "$Default");
System.out.println(subInfo1.getName() + " " + result1.toString());
System.out.println(ruleInfo1.getName() + " " + ruleResult1.toString());
SubscriptionInfo subInfo2 = new SubscriptionInfo("HighMessages");
CreateSubscriptionResult result2 = service.createSubscription("TestTopic", subInfo2);
RuleInfo ruleInfo2 = new RuleInfo("RULENAME2");
ruleInfo2 = ruleInfo2.withSqlExpressionFilter("MessageNumber > 3");
CreateRuleResult ruleResult2 =
service.createRule("TestTopic", "HighMessages", ruleInfo2);
service.deleteRule("TestTopic", "HighMessages", "$Default");
System.out.println(subInfo2.getName() + " " + result2.toString());
System.out.println(ruleInfo2.getName() + " " + ruleResult2.toString());
}
}
public class GetSbMessSub
{
public static void main(String[] args) throws ServiceException {
Service creds = new Service();
ServiceBusContract service = creds.getservice();
String subscriptionName = "LowMessages";
ReceiveMessageOptions opts = ReceiveMessageOptions.DEFAULT;
opts.setReceiveMode(ReceiveMode.PEEK_LOCK);
ReceiveSubscriptionMessageResult resultQM = service.receiveSubscriptionMessage("TestTopic", subscriptionName, opts);
BrokeredMessage message = resultQM.getValue();
if (message != null && message.getMessageId() != null)
{
try {
System.out.println("Subscription: " + subscriptionName);
System.out.println("MessageNumber: " + message.getProperty("MessageNumber"));
service.deleteMessage(message);}
catch (Exception ex){
System.out.println("Inner exception encountered!");
service.unlockMessage(message);}
}
else {System.out.println("There are no more messages.");}
}
}
public class GetSbMessSub
{
public static void main(String[] args) throws ServiceException {
Service creds = new Service();
ServiceBusContract service = creds.getservice();
String subscriptionName = "LowMessages";
ReceiveMessageOptions opts = ReceiveMessageOptions.DEFAULT;
opts.setReceiveMode(ReceiveMode.PEEK_LOCK);
ReceiveSubscriptionMessageResult resultQM = service.receiveSubscriptionMessage("TestTopic", subscriptionName, opts);
BrokeredMessage message = resultQM.getValue();
if (message != null && message.getMessageId() != null)
{
try {
System.out.println("Subscription: " + subscriptionName);
System.out.println("MessageNumber: " + message.getProperty("MessageNumber"));
service.deleteMessage(message);}
catch (Exception ex){
System.out.println("Inner exception encountered!");
service.unlockMessage(message);}
}
else {System.out.println("There are no more messages.");}
}
}