本机IP为 192.168.1.102
一、搭建Hystrix Dashboard
1. 新建 Maven 项目 hystrix-dashboard
2. pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.java</groupId> <artifactId>hystrix-dashboard</artifactId> <version>1.0.0-SNAPSHOT</version> <packaging>war</packaging> <name>${project.artifactId}</name> <!-- 配置版本常量 --> <properties> <jdk.version>1.8</jdk.version> <spring.cloud.version>2.0.0.RELEASE</spring.cloud.version> </properties> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.5.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix</artifactId> <version>${spring.cloud.version}</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix-dashboard</artifactId> <version>${spring.cloud.version}</version> </dependency> </dependencies> <build> <finalName>${project.artifactId}</finalName> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> <configuration> <source>${jdk.version}</source> <target>${jdk.version}</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> </plugins> </pluginManagement> </build> </project>
3. application.yml
server: port: 9999
4. HystrixDashboardStarter.java
package com.java.hystrix.dashboard; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.boot.web.servlet.support.SpringBootServletInitializer; import org.springframework.cloud.netflix.hystrix.dashboard.EnableHystrixDashboard; @SpringBootApplication @EnableHystrixDashboard public class HystrixDashboardStarter extends SpringBootServletInitializer { public static void main(String[] args) { SpringApplication.run(HystrixDashboardStarter.class, args); } @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) { return builder.sources(HystrixDashboardStarter.class); } }
5. 运行 HystrixDashboardStarter.java
浏览器打开URL
http://192.168.1.102:9999/hystrix/
或
http://127.0.0.1:9999/hystrix/
截图如下:
Hystrix Dashboard搭建成功!
二、搭建 Hystrix
1. 新建 Maven 项目 hystrix
2. pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.java</groupId> <artifactId>hystrix</artifactId> <version>1.0.0-SNAPSHOT</version> <packaging>war</packaging> <name>${project.artifactId}</name> <!-- 配置版本常量 --> <properties> <jdk.version>1.8</jdk.version> <spring.cloud.version>2.0.0.RELEASE</spring.cloud.version> </properties> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.5.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> <version>${spring.cloud.version}</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-hystrix</artifactId> <version>${spring.cloud.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <!-- 热部署 --> <dependency> <groupId>org.springframework</groupId> <artifactId>springloaded</artifactId> <version>1.2.8.RELEASE</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency> </dependencies> <build> <finalName>${project.artifactId}</finalName> <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <version>3.1.0</version> <configuration> <delimiters> <delimit>$</delimit> </delimiters> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> <configuration> <source>${jdk.version}</source> <target>${jdk.version}</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> </plugins> </pluginManagement> </build> </project>
3. application.yml
server: port: 8888 spring: application: name: microservice eureka: client: service-url: defaultZone: http://192.168.1.102:8080/eureka instance: instance-id: microservice-hystrix prefer-ip-address: true #访问路径可以显示IP地址 info: app.name: microservice app.update: 2018-10-07 build.groupId: $project.groupId$ build.artifactId: $project.artifactId$ build.version: $project.version$
4. HostController.java
package com.java.hystrix.controller; import java.net.InetAddress; import java.net.UnknownHostException; import java.util.HashMap; import java.util.Map; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RestController; import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand; @RestController public class HostController { @GetMapping("/getHostMessage/{id}") @HystrixCommand(fallbackMethod = "getHostMessageFallback") public Map<String, Object> getHostMessage(@PathVariable String id) { if ("error".equals(id)) { throw new RuntimeException("测试异常演习!"); } Map<String, Object> map = new HashMap<>(); try { InetAddress serverHost = InetAddress.getLocalHost(); map.put("hostname", serverHost.getHostName()); map.put("hostAddress", serverHost.getHostAddress()); map.put("id", id); return map; } catch (UnknownHostException e) { e.printStackTrace(); map.put("msg", e.getMessage()); throw new RuntimeException(e.getMessage()); } } public Map<String, Object> getHostMessageFallback(@PathVariable String id) { Map<String, Object> map = new HashMap<>(); map.put("id", id); map.put("description", "异常演习Fallback!"); return map; } }
5. ConfigBean.java
package com.java.hystrix.config; import org.springframework.boot.web.servlet.ServletRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import com.netflix.hystrix.contrib.metrics.eventstream.HystrixMetricsStreamServlet; @Configuration public class ConfigBean { @Bean public ServletRegistrationBean<HystrixMetricsStreamServlet> getServlet() { HystrixMetricsStreamServlet servlet = new HystrixMetricsStreamServlet(); ServletRegistrationBean<HystrixMetricsStreamServlet> bean = new ServletRegistrationBean<>(servlet); bean.addUrlMappings("/hystrix.stream"); bean.setName("HystrixMetricsStreamServlet"); return bean; } }
6. HystrixStarter.java
package com.java.hystrix; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.boot.web.servlet.support.SpringBootServletInitializer; import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; @EnableEurekaClient @EnableCircuitBreaker @EnableDiscoveryClient @SpringBootApplication public class HystrixStarter extends SpringBootServletInitializer { public static void main(String[] args) { SpringApplication.run(HystrixStarter.class, args); } @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) { return builder.sources(HystrixStarter.class); } }
7. 运行测试
启动 Eureka 服务注册中心,参考 https://www.cnblogs.com/jonban/p/9931412.html
运行 HystrixStarter.java
浏览器输入URL
http://192.168.1.102:8888/getHostMessage/hello
或
http://127.0.0.1:8888/getHostMessage/hello
返回数据如下:
{"hostname":"F6RK2EXYAFARPPS","hostAddress":"192.168.1.102","id":"hello"
截图如下:
Hystrix 搭建成功!
三、使用 Hystrix Dashboard 监控 Hystrix 服务
在 Hystrix Dashboard 监控页面 (http://127.0.0.1:9999/hystrix/)输入Hystrix 的监控地址
http://192.168.1.102:8888/hystrix.stream
截图如下:
单击【Monitor Stream】按钮,开始监控,截图如下:
连续多次请求Hystrix 服务的URL
http://192.168.1.102:8888/getHostMessage/hello
切换到仪表盘页面观察,监控开始变化。
监控仪表盘功能正常
搭建完毕!
.
原文地址:https://www.cnblogs.com/jonban/p/9939769.html