to #77,support throw mock exception

Author: flystar32

mse-simple-demo/C/src/main/java/com/alibabacloud/mse/demo/CApplication.java

@@ -19,6 +19,7 @@
 import javax.servlet.http.HttpServletRequest;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.cloud.client.loadbalancer.LoadBalanced;
@@ -55,8 +56,14 @@ class AController {
         @Autowired
         InetUtils inetUtils;
 
+        @Value("${throwException:false}")
+        boolean throwException;
+
         @GetMapping("/c")
         public String c(HttpServletRequest request) {
+            if (throwException) {
+                throw new RuntimeException();
+            }
             return "C" + SERVICE_TAG + "[" + inetUtils.findFirstNonLoopbackAddress().getHostAddress() + "]";
         }
     }

mse-simple-demo/C/src/main/java/com/alibabacloud/mse/demo/service/HelloServiceCImpl.java

@@ -28,9 +28,17 @@ public class HelloServiceCImpl implements HelloServiceC {
     @Value("${rocketmq.consumer.topic}")
     private String topic;
 
+
+    @Value("${throwException:false}")
+    boolean throwException;
+
     @Override
     public String hello(String name) {
 
+        if (throwException) {
+            throw new RuntimeException();
+        }
+
         String value = "C" + SERVICE_TAG + "[" + inetUtils.findFirstNonLoopbackAddress().getHostAddress() + "]";
         String invokerTag="";
         String userData = RpcContext.getContext().getAttachment("__microservice_tag__");