diff --git a/spring-cloud-alibaba-dubbo/src/test/java/com/alibaba/cloud/dubbo/http/matcher/ConsumeMediaTypeExpressionTest.java b/spring-cloud-alibaba-dubbo/src/test/java/com/alibaba/cloud/dubbo/http/matcher/ConsumeMediaTypeExpressionTest.java
index 02ef7576..8ec861f8 100644
--- a/spring-cloud-alibaba-dubbo/src/test/java/com/alibaba/cloud/dubbo/http/matcher/ConsumeMediaTypeExpressionTest.java
+++ b/spring-cloud-alibaba-dubbo/src/test/java/com/alibaba/cloud/dubbo/http/matcher/ConsumeMediaTypeExpressionTest.java
@@ -33,16 +33,16 @@ public class ConsumeMediaTypeExpressionTest
 	public void testMatch() {
 		ConsumeMediaTypeExpression expression = createExpression(MediaType.ALL_VALUE);
 
-		Assert.assertTrue(expression.match(MediaType.APPLICATION_JSON_UTF8));
+		Assert.assertTrue(expression.match(MediaType.APPLICATION_JSON));
 
 		expression = createExpression(MediaType.APPLICATION_JSON_VALUE);
-		Assert.assertTrue(expression.match(MediaType.APPLICATION_JSON_UTF8));
+		Assert.assertTrue(expression.match(MediaType.APPLICATION_JSON));
 
 		expression = createExpression(MediaType.APPLICATION_JSON_VALUE + ";q=0.7");
-		Assert.assertTrue(expression.match(MediaType.APPLICATION_JSON_UTF8));
+		Assert.assertTrue(expression.match(MediaType.APPLICATION_JSON));
 
 		expression = createExpression(MediaType.TEXT_HTML_VALUE);
-		Assert.assertFalse(expression.match(MediaType.APPLICATION_JSON_UTF8));
+		Assert.assertFalse(expression.match(MediaType.APPLICATION_JSON));
 	}
 
 }
diff --git a/spring-cloud-alibaba-examples/sentinel-example/sentinel-spring-cloud-gateway-example/src/main/java/com/alibaba/cloud/examples/MySCGConfiguration.java b/spring-cloud-alibaba-examples/sentinel-example/sentinel-spring-cloud-gateway-example/src/main/java/com/alibaba/cloud/examples/MySCGConfiguration.java
index 96a67ae7..2f612e40 100644
--- a/spring-cloud-alibaba-examples/sentinel-example/sentinel-spring-cloud-gateway-example/src/main/java/com/alibaba/cloud/examples/MySCGConfiguration.java
+++ b/spring-cloud-alibaba-examples/sentinel-example/sentinel-spring-cloud-gateway-example/src/main/java/com/alibaba/cloud/examples/MySCGConfiguration.java
@@ -25,7 +25,7 @@ import org.springframework.http.MediaType;
 import org.springframework.web.reactive.function.server.ServerResponse;
 import org.springframework.web.server.ServerWebExchange;
 
-import static org.springframework.web.reactive.function.BodyInserters.fromObject;
+import static org.springframework.web.reactive.function.BodyInserters.fromValue;
 
 /**
  * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
@@ -39,9 +39,8 @@ public class MySCGConfiguration {
 			@Override
 			public Mono<ServerResponse> handleRequest(ServerWebExchange exchange,
 					Throwable t) {
-				return ServerResponse.status(444)
-						.contentType(MediaType.APPLICATION_JSON_UTF8)
-						.body(fromObject("SCS Sentinel block"));
+				return ServerResponse.status(444).contentType(MediaType.APPLICATION_JSON)
+						.body(fromValue("SCS Sentinel block"));
 			}
 		};
 	}
diff --git a/spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/com/alibaba/cloud/examples/MyConfiguration.java b/spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/com/alibaba/cloud/examples/MyConfiguration.java
index 6a8d271c..dd8df034 100644
--- a/spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/com/alibaba/cloud/examples/MyConfiguration.java
+++ b/spring-cloud-alibaba-examples/sentinel-example/sentinel-webflux-example/src/main/java/com/alibaba/cloud/examples/MyConfiguration.java
@@ -26,7 +26,7 @@ import org.springframework.http.MediaType;
 import org.springframework.web.reactive.function.server.ServerResponse;
 import org.springframework.web.server.ServerWebExchange;
 
-import static org.springframework.web.reactive.function.BodyInserters.fromObject;
+import static org.springframework.web.reactive.function.BodyInserters.fromValue;
 
 /**
  * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
@@ -41,8 +41,7 @@ public class MyConfiguration {
 			public Mono<ServerResponse> handleRequest(ServerWebExchange exchange,
 					Throwable t) {
 				return ServerResponse.status(HttpStatus.TOO_MANY_REQUESTS)
-						.contentType(MediaType.APPLICATION_JSON_UTF8)
-						.body(fromObject("block"));
+						.contentType(MediaType.APPLICATION_JSON).body(fromValue("block"));
 			}
 		};
 	}
diff --git a/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/FallbackProperties.java b/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/FallbackProperties.java
index 5d4d6ee8..e7eed21a 100644
--- a/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/FallbackProperties.java
+++ b/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/FallbackProperties.java
@@ -48,7 +48,7 @@ public class FallbackProperties {
 	/**
 	 * Content-Type for `response` mode.
 	 */
-	private String contentType = MediaType.APPLICATION_JSON_UTF8.toString();
+	private String contentType = MediaType.APPLICATION_JSON.toString();
 
 	public String getMode() {
 		return mode;
diff --git a/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/scg/SentinelSCGAutoConfiguration.java b/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/scg/SentinelSCGAutoConfiguration.java
index cd397158..32db680a 100644
--- a/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/scg/SentinelSCGAutoConfiguration.java
+++ b/spring-cloud-alibaba-sentinel-gateway/src/main/java/com/alibaba/cloud/sentinel/gateway/scg/SentinelSCGAutoConfiguration.java
@@ -33,7 +33,6 @@ import com.alibaba.csp.sentinel.config.SentinelConfig;
 import com.alibaba.csp.sentinel.util.StringUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import reactor.core.publisher.Mono;
 
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -50,9 +49,8 @@ import org.springframework.http.MediaType;
 import org.springframework.http.codec.ServerCodecConfigurer;
 import org.springframework.web.reactive.function.server.ServerResponse;
 import org.springframework.web.reactive.result.view.ViewResolver;
-import org.springframework.web.server.ServerWebExchange;
 
-import static org.springframework.web.reactive.function.BodyInserters.fromObject;
+import static org.springframework.web.reactive.function.BodyInserters.fromValue;
 
 /**
  * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
@@ -93,8 +91,7 @@ public class SentinelSCGAutoConfiguration {
 	}
 
 	private void initAppType() {
-		System.setProperty(SentinelConfig.APP_TYPE,
-				String.valueOf(ConfigConstants.APP_TYPE_SCG_GATEWAY));
+		System.setProperty(SentinelConfig.APP_TYPE, ConfigConstants.APP_TYPE_SCG_GATEWAY);
 	}
 
 	private void initFallback() {
@@ -105,17 +102,11 @@ public class SentinelSCGAutoConfiguration {
 		}
 		if (ConfigConstants.FALLBACK_MSG_RESPONSE.equals(fallbackProperties.getMode())) {
 			if (StringUtil.isNotBlank(fallbackProperties.getResponseBody())) {
-				GatewayCallbackManager.setBlockHandler(new BlockRequestHandler() {
-					@Override
-					public Mono<ServerResponse> handleRequest(ServerWebExchange exchange,
-							Throwable t) {
-						return ServerResponse
-								.status(fallbackProperties.getResponseStatus())
-								.contentType(MediaType
-										.valueOf(fallbackProperties.getContentType()))
-								.body(fromObject(fallbackProperties.getResponseBody()));
-					}
-				});
+				GatewayCallbackManager.setBlockHandler((exchange, t) -> ServerResponse
+						.status(fallbackProperties.getResponseStatus())
+						.contentType(
+								MediaType.valueOf(fallbackProperties.getContentType()))
+						.body(fromValue(fallbackProperties.getResponseBody())));
 				logger.info(
 						"[Sentinel SpringCloudGateway] using AnonymousBlockRequestHandler, responseStatus: "
 								+ fallbackProperties.getResponseStatus()