如何在java代码中获得'CARBON_HOME‘的值

Question

我试图实现一个Axis2服务，该服务接收用户请求并将它们作为事件发布到CEP中，并使用(通过Axis2)。

我遵循了wso2cep-3.1.0/samples/producers/activity-monitor中提供的代码示例

请看下面的代码片段

public class GatewayServiceSkeleton{

        private static Logger logger = Logger.getLogger(GatewayServiceSkeleton.class);


        public RequestResponse request(Request request)throws AgentException,
                    MalformedStreamDefinitionException,StreamDefinitionException,
                    DifferentStreamDefinitionAlreadyDefinedException,
                    MalformedURLException,AuthenticationException,DataBridgeException,
                    NoStreamDefinitionExistException,TransportException, SocketException,
                    org.wso2.carbon.databridge.commons.exception.AuthenticationException
            {

               final String GATEWAY_SERVICE_STREAM = "gateway.cep";
               final String VERSION = "1.0.0";
               final String PROTOCOL = "tcp://";
               final String CEPHOST = "cep.gubnoi.com";
               final String CEPPORT = "7611";
               final String CEPUSERNAME = "admin";
               final String CEPPASSWORD = "admin";

               Object[] metadata = { request.getDeviceID(), request.getViewID()};
               Object[] correlationdata = { request.getSessionID()};
               Object[] payloaddata = {request.getBucket()};


               KeyStoreUtil.setTrustStoreParams();

               KeyStoreUtil.setKeyStoreParams(); 


               DataPublisher dataPublisher = new DataPublisher(PROTOCOL + CEPHOST + ":" + CEPPORT, CEPUSERNAME, CEPPASSWORD);

                 //create event 
               Event event = new Event (GATEWAY_SERVICE_STREAM + ":" + VERSION, System.currentTimeMillis(), metadata, correlationdata, payloaddata);

                 //Publish event for a valid stream

               dataPublisher.publish(event);
                 //stop 
               dataPublisher.stop();


                RequestResponse response = new RequestResponse();
                response.setSessionID(request.getSessionID());
                response.setDeviceID(request.getDeviceID());
                response.setViewID(request.getViewID());
                response.setBucket(request.getBucket());
                return response; 

            }

还有一个实用工具类，它将密钥存储参数设置为

public class KeyStoreUtil {

    static  File filePath = new File("../../../repository/resources/security");

    public static void setTrustStoreParams() {
        String trustStore = filePath.getAbsolutePath();
        System.setProperty("javax.net.ssl.trustStore", trustStore + "/client-truststore.jks");
        System.setProperty("javax.net.ssl.trustStorePassword", "wso2carbon");

    }

    public static void setKeyStoreParams() {
        String keyStore = filePath.getAbsolutePath();
        System.setProperty("Security.KeyStore.Location", keyStore + "/wso2carbon.jks");
        System.setProperty("Security.KeyStore.Password", "wso2carbon");

    }
}

我将服务上传到wso2as-5.2.1中，并使用SOAPUI调用该服务。

请求返回一条错误消息“无法借用TCP客户端”。

我调试，并发现问题可能在于类'KeyStoreUtil'，

“filePath”以某种方式将“null”重新组合在一起，

static  File filePath = new File("../../../repository/resources/security");

造成了这条线路的故障

DataPublisher dataPublisher = new DataPublisher(PROTOCOL + CEPHOST + ":" + CEPPORT, CEPUSERNAME, CEPPASSWORD);

我想如果我用"CARBON_HOME“的值来确定密钥商店的位置可能是个更好的主意

所以我的问题是：

我如何才能在Java代码中获得'CARBON_HOME‘的值？

这么说吧。如果您再想一想:服务将被多次调用；而'setTrustStoreParams‘和'setKeyStoreParams’则只需要在服务器/服务启动时执行一次。

那么，是否有更好的方法将“setTrustStoreParams”和“setKeyStoreParams”从服务代码中删除，或者实现为可配置项？

请指教

谢谢

Answer 1

所以我的问题是： 我如何才能在Java代码中获得'CARBON_HOME‘的值？

您应该使用属性carbon.home，如下所示，它将检索WSO2产品的主目录。

System.getProperty("carbon.home");