无法连接到 Spring Cloud + Hystrix + Turbine 中的命令指标流 - MIME 类型 ("text/plain") 不是 "text/event-stream"
Unable to connect to Command Metric Stream in Spring Cloud + Hystrix + Turbine - MIME type ("text/plain") that is not "text/event-stream"
我已经完成了 link: 并尝试了几个选项,但还没有任何结果。
我正在开发 Spring Cloud Code + Hystrix + Turbine.
你能告诉我问题是什么吗?我正在使用 Spring 启动 v2.0.4.RELEASE
.
HystrixDashboardApplication.java
@EnableTurbine
@EnableHystrixDashboard
@SpringBootApplication
public class HystrixDashboardApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixDashboardApplication.class, args);
}
}
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-turbine</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
tollrate-billboard
应用程序有以下代码
TollrateBillboardApplication.java
@EnableCircuitBreaker
@SpringBootApplication
@EnableEurekaClient
public class TollrateBillboardApplication {
public static void main(String[] args) {
SpringApplication.run(TollrateBillboardApplication.class, args);
}
}
DashboardController.java
@Controller
public class DashboardController {
@LoadBalanced
@Bean
public RestTemplate restTemplate(RestTemplateBuilder builder) {
return builder.build();
}
@Autowired
private RestTemplate restTemplate;
@HystrixCommand(fallbackMethod = "getTollRateBackup")
@RequestMapping("/dashboard")
public String GetTollRate(@RequestParam int stationId, Model m) {
TollRate tr = restTemplate.getForObject("http://pluralsight-toll-service/tollrate/" + stationId, TollRate.class);
System.out.println("stationId: " + stationId);
m.addAttribute("rate", tr.getCurrentRate());
return "dashboard";
}
public String getTollRateBackup(@RequestParam int stationId, Model m) {
System.out.println("Fallback operation called");
m.addAttribute("rate", "1.00");
return "dashboard";
}
}
bootstrap.properties
spring.application.name=pluralsight-tollrate-billboard
application.properties
server.port=8082
# eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/
eureka.client.register-with-eureka=true
eureka.client.fetch-registry=true
#http://cloud.spring.io/spring-cloud-static/Finchley.RELEASE/single/spring-cloud.html#_environment_changes
management.endpoints.web.exposure.include=hystrix.stream
CURL 命令结果:
curl "http://localhost:8085/clusters"
输出
[
{
"name": "PLURALSIGHT-FASTPASS-CONSOLE",
"link": "http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE"
},
{
"name": "PLURALSIGHT-TOLLRATE-BILLBOARD",
"link": "http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-TOLLRATE-BILLBOARD"
}
]
EDIT-1::,我正在使用 "hystrix-turbine"
@EnableTurbineStream
@SpringBootApplication
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, args);
}
}
现在,我遇到以下错误:
2018-09-03 22:23:45.808 WARN 2820 --- [nio-8085-exec-5] ashboardConfiguration$ProxyStreamServlet : Failed opening connection to http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE : 404 : HTTP/1.1 404
2018-09-03 22:23:45.808 WARN 2820 --- [nio-8085-exec-2] ashboardConfiguration$ProxyStreamServlet : Failed opening connection to http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE : 404 : HTTP/1.1 404
@Sayali 我尝试在我自己的系统中重新创建错误并且我设法让它工作,这里有一些你可以做的检查:
1) 第一个屏幕截图中的 URL 不正确。您在 Hystrix 仪表板中的流 URL 应该是:
http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-TOLLRATE-BILLBOARD
url 应该指向主 class 中具有 @EnableTurbine
注释的仪表板应用程序的端口。
2) 检查您是否收到以下回复:
(为此使用您的浏览器)
(这应该来自您在使用 @EnableCircuitBreaker
时启用 hystrix 的应用程序)
如果你收到 ping,那么至少你的 hystrix 流是可以访问的。
如果不,
检查您是否有: org.springframework.boot:spring-boot-starter-actuator
依赖项和
确保在主 class:
中具有 @EnableCircuitBreaker
的应用程序的 application.properties 文件中设置了以下 属性
management.endpoints.web.exposure.include= hystrix.stream, info, health
再次检查URL。
3) 在移动到涡轮流之前,请让涡轮部分工作,所以现在,您可以进行以下更改:
@EnableTurbine // instead of @EnableTurbineStream
@SpringBootApplication
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, args);
}
}
此外,要使用 TurbineStream:
you might want to have your Hystrix commands push metrics to Turbine.
Spring Cloud enables that with messaging. To do so on the client, add
a dependency to spring-cloud-netflix-hystrix-stream and the
spring-cloud-starter-stream-* of your choice.
参考:http://cloud.spring.io/spring-cloud-static/Finchley.SR1/single/spring-cloud.html#_turbine_stream
希望对您有所帮助。请发表评论以帮助我了解这是否适合您。
抱歉回复晚了。
将以下配置添加到服务 hystrix.stream
的实例
hystrix.dashboard.proxyStreamAllowList: '**'
我已经完成了 link:
你能告诉我问题是什么吗?我正在使用 Spring 启动 v2.0.4.RELEASE
.
HystrixDashboardApplication.java
@EnableTurbine
@EnableHystrixDashboard
@SpringBootApplication
public class HystrixDashboardApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixDashboardApplication.class, args);
}
}
pom.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-turbine</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
tollrate-billboard
应用程序有以下代码
TollrateBillboardApplication.java
@EnableCircuitBreaker
@SpringBootApplication
@EnableEurekaClient
public class TollrateBillboardApplication {
public static void main(String[] args) {
SpringApplication.run(TollrateBillboardApplication.class, args);
}
}
DashboardController.java
@Controller
public class DashboardController {
@LoadBalanced
@Bean
public RestTemplate restTemplate(RestTemplateBuilder builder) {
return builder.build();
}
@Autowired
private RestTemplate restTemplate;
@HystrixCommand(fallbackMethod = "getTollRateBackup")
@RequestMapping("/dashboard")
public String GetTollRate(@RequestParam int stationId, Model m) {
TollRate tr = restTemplate.getForObject("http://pluralsight-toll-service/tollrate/" + stationId, TollRate.class);
System.out.println("stationId: " + stationId);
m.addAttribute("rate", tr.getCurrentRate());
return "dashboard";
}
public String getTollRateBackup(@RequestParam int stationId, Model m) {
System.out.println("Fallback operation called");
m.addAttribute("rate", "1.00");
return "dashboard";
}
}
bootstrap.properties
spring.application.name=pluralsight-tollrate-billboard
application.properties
server.port=8082
# eureka.client.serviceUrl.defaultZone=http://localhost:8761/eureka/
eureka.client.register-with-eureka=true
eureka.client.fetch-registry=true
#http://cloud.spring.io/spring-cloud-static/Finchley.RELEASE/single/spring-cloud.html#_environment_changes
management.endpoints.web.exposure.include=hystrix.stream
CURL 命令结果:
curl "http://localhost:8085/clusters"
输出
[
{
"name": "PLURALSIGHT-FASTPASS-CONSOLE",
"link": "http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE"
},
{
"name": "PLURALSIGHT-TOLLRATE-BILLBOARD",
"link": "http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-TOLLRATE-BILLBOARD"
}
]
EDIT-1::,我正在使用 "hystrix-turbine"
@EnableTurbineStream
@SpringBootApplication
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, args);
}
}
现在,我遇到以下错误:
2018-09-03 22:23:45.808 WARN 2820 --- [nio-8085-exec-5] ashboardConfiguration$ProxyStreamServlet : Failed opening connection to http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE : 404 : HTTP/1.1 404
2018-09-03 22:23:45.808 WARN 2820 --- [nio-8085-exec-2] ashboardConfiguration$ProxyStreamServlet : Failed opening connection to http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-FASTPASS-CONSOLE : 404 : HTTP/1.1 404
@Sayali 我尝试在我自己的系统中重新创建错误并且我设法让它工作,这里有一些你可以做的检查:
1) 第一个屏幕截图中的 URL 不正确。您在 Hystrix 仪表板中的流 URL 应该是:
http://localhost:8085/turbine.stream?cluster=PLURALSIGHT-TOLLRATE-BILLBOARD
url 应该指向主 class 中具有 @EnableTurbine
注释的仪表板应用程序的端口。
2) 检查您是否收到以下回复:
(为此使用您的浏览器)
(这应该来自您在使用 @EnableCircuitBreaker
时启用 hystrix 的应用程序)
如果你收到 ping,那么至少你的 hystrix 流是可以访问的。
如果不,
检查您是否有: org.springframework.boot:spring-boot-starter-actuator
依赖项和
确保在主 class:
@EnableCircuitBreaker
的应用程序的 application.properties 文件中设置了以下 属性
management.endpoints.web.exposure.include= hystrix.stream, info, health
再次检查URL。
3) 在移动到涡轮流之前,请让涡轮部分工作,所以现在,您可以进行以下更改:
@EnableTurbine // instead of @EnableTurbineStream
@SpringBootApplication
public class HystrixTurbineApplication {
public static void main(String[] args) {
SpringApplication.run(HystrixTurbineApplication.class, args);
}
}
此外,要使用 TurbineStream:
you might want to have your Hystrix commands push metrics to Turbine. Spring Cloud enables that with messaging. To do so on the client, add a dependency to spring-cloud-netflix-hystrix-stream and the spring-cloud-starter-stream-* of your choice.
参考:http://cloud.spring.io/spring-cloud-static/Finchley.SR1/single/spring-cloud.html#_turbine_stream
希望对您有所帮助。请发表评论以帮助我了解这是否适合您。
抱歉回复晚了。 将以下配置添加到服务 hystrix.stream
的实例hystrix.dashboard.proxyStreamAllowList: '**'