fix fallback ex

spring-cloud-starter-tencent-polaris-circuitbreaker/src/main/java/com/tencent/cloud/polaris/circuitbreaker/exception/FallbackWrapperException.java

@@ -0,0 +1,10 @@
+package com.tencent.cloud.polaris.circuitbreaker.exception;
+
+public class FallbackWrapperException extends RuntimeException {
+
+	public FallbackWrapperException(Throwable cause) {
+		super(cause);
+	}
+
+}
+

spring-cloud-starter-tencent-polaris-circuitbreaker/src/main/java/com/tencent/cloud/polaris/circuitbreaker/feign/PolarisCircuitBreakerFallbackFactory.java

@@ -25,6 +25,7 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
 
+import com.tencent.cloud.polaris.circuitbreaker.exception.FallbackWrapperException;
 import com.tencent.polaris.api.pojo.CircuitBreakerStatus;
 import com.tencent.polaris.circuitbreak.client.exception.CallAbortedException;
 import feign.Request;
@@ -87,11 +88,11 @@ public class PolarisCircuitBreakerFallbackFactory implements FallbackFactory {
 						return decoder.decode(response, method.getGenericReturnType());
 					}
 					catch (IOException e) {
-						throw new IllegalStateException(e);
+						throw new FallbackWrapperException(e);
 					}
 				}
 			}
-			throw new IllegalStateException(t);
+			throw new FallbackWrapperException(t);
 		}
 	}
 }

spring-cloud-starter-tencent-polaris-circuitbreaker/src/main/java/com/tencent/cloud/polaris/circuitbreaker/feign/PolarisFeignCircuitBreakerInvocationHandler.java

@@ -26,6 +26,7 @@ import java.util.Map;
 import java.util.function.Function;
 import java.util.function.Supplier;
 
+import com.tencent.cloud.polaris.circuitbreaker.exception.FallbackWrapperException;
 import feign.InvocationHandlerFactory;
 import feign.Target;
 import feign.codec.Decoder;
@@ -119,7 +120,11 @@ public class PolarisFeignCircuitBreakerInvocationHandler implements InvocationHa
 				return fallback.fallback(method);
 			};
 		}
+		try {
 			return circuitBreaker.run(supplier, fallbackFunction);
+		} catch (FallbackWrapperException e) {
+			throw e.getCause();
+		}
 	}
 
 	private void unwrapAndRethrow(Exception exception) {

spring-cloud-starter-tencent-polaris-circuitbreaker/src/main/java/com/tencent/cloud/polaris/circuitbreaker/resttemplate/PolarisCircuitBreakerRestTemplateInterceptor.java

@@ -20,6 +20,7 @@ package com.tencent.cloud.polaris.circuitbreaker.resttemplate;
 import java.io.IOException;
 import java.lang.reflect.Method;
 
+import com.tencent.cloud.polaris.circuitbreaker.exception.FallbackWrapperException;
 import com.tencent.polaris.api.pojo.CircuitBreakerStatus;
 import com.tencent.polaris.circuitbreak.client.exception.CallAbortedException;
 
@@ -63,6 +64,7 @@ public class PolarisCircuitBreakerRestTemplateInterceptor implements ClientHttpR
 
 	@Override
 	public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
+		try {
 			return circuitBreakerFactory.create(request.getURI().getHost() + "#" + request.getURI().getPath()).run(
 					() -> {
 						try {
@@ -93,9 +95,20 @@ public class PolarisCircuitBreakerRestTemplateInterceptor implements ClientHttpR
 								return new PolarisCircuitBreakerHttpResponse(fallbackInfo);
 							}
 						}
-					throw new IllegalStateException(t);
+						throw new FallbackWrapperException(t);
 					}
 			);
+		} catch (FallbackWrapperException e) {
+			Throwable underlyingException = e.getCause();
+			if (underlyingException instanceof IllegalStateException) {
+				throw e;
+			}
+			if (underlyingException instanceof RuntimeException) {
+				throw (RuntimeException) underlyingException;
+			}
+			throw new IllegalStateException(underlyingException);
+		}
+
 	}
 
 }