update sentinel example

spring-cloud-alibaba-examples/sentinel-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/ExceptionUtil.java

@@ -0,0 +1,14 @@
+package org.springframework.cloud.alibaba.cloud.examples;
+
+import com.alibaba.csp.sentinel.slots.block.BlockException;
+
+/**
+ * @author fangjian
+ */
+public class ExceptionUtil {
+
+	public static void handleException(BlockException ex) {
+		System.out.println("Oops: " + ex.getClass().getCanonicalName());
+	}
+
+}

spring-cloud-alibaba-examples/sentinel-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/ServiceApplication.java

@@ -2,6 +2,9 @@ package org.springframework.cloud.alibaba.cloud.examples;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.alibaba.sentinel.annotation.SentinelProtect;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.client.RestTemplate;
 
 /**
  * @author xiaojing
@@ -9,6 +12,17 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 @SpringBootApplication
 public class ServiceApplication {
 
+	@Bean
+	@SentinelProtect(blockHandler = "handleException", blockHandlerClass = ExceptionUtil.class)
+	public RestTemplate restTemplate() {
+		return new RestTemplate();
+	}
+
+	@Bean
+	public RestTemplate restTemplate2() {
+		return new RestTemplate();
+	}
+
 	public static void main(String[] args) {
 		SpringApplication.run(ServiceApplication.class, args);
 	}

spring-cloud-alibaba-examples/sentinel-example/src/main/java/org/springframework/cloud/alibaba/cloud/examples/TestController.java

@@ -1,9 +1,10 @@
 package org.springframework.cloud.alibaba.cloud.examples;
 
-import org.springframework.cloud.alibaba.sentinel.custom.EnableSentinel;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.client.RestTemplate;
 
 /**
  * @author xiaojing
@@ -11,8 +12,10 @@ import org.springframework.web.bind.annotation.RestController;
 @RestController
 public class TestController {
 
+	@Autowired
+	private RestTemplate restTemplate;
+
 	@RequestMapping(value = "/hello", method = RequestMethod.GET)
-	@EnableSentinel("resource")
 	public String hello() {
 		return "Hello";
 	}
@@ -22,4 +25,9 @@ public class TestController {
 		return "Hello test";
 	}
 
+	@RequestMapping(value = "/template", method = RequestMethod.GET)
+	public String client() {
+		return restTemplate.getForObject("http://www.taobao.com/test", String.class);
+	}
+
 }