首页 > 编程 > Java > 正文

SpringBoot2.0整合SpringCloud Finchley @hystrixcommand注解找不到解决方案

2019-11-26 09:41:58
字体:
来源:转载
供稿:网友

hystrix参数使用方法

通过注解@HystrixCommand的commandProperties去配置,

如下就是hystrix命令超时时间命令执行超时时间,为1000ms和执行是不启用超时

@RestControllerpublic class MovieController {@Autowiredprivate RestTemplate restTemplate;@GetMapping("/movie/{id}")@HystrixCommand(commandProperties = {@HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "1000"),@HystrixProperty(name = "execution.timeout.enabled", value = "false")},fallbackMethod = "findByIdFallback")public User findById(@PathVariable Long id) {return this.restTemplate.getForObject("http://microservice-provider-user/simple/" + id, User.class);}/*** fallback方法* @param id* @return*/public User findByIdFallback(Long id) {User user = new User();user.setId(5L);return user;}}

问题描述:

笔者在使用Spring Boot 2.0整合Spring Cloud Finchley.RC2版本时,使用断路器 Hystrix时候发现@hystrixcommand注解找不到,由于Spring Boot 2.0刚出没多久,所以这块资料网上很少,查阅资料说是新版本中不包含此注解了,需要重新引入。

报错信息:


源码:

解决方案:pom.xml添加依赖

<dependency> <groupId>com.netflix.hystrix</groupId>  <artifactId>hystrix-javanica</artifactId>  <version>RELEASE</version></dependency>

完整pom.xml

<?xml version="1.0" encoding="UTF-8"?><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.serverribbon</groupId>  <artifactId>serverribbon</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>jar</packaging>   <name>serverribbon</name>  <description>Demo project for Spring Boot</description>   <parent>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-parent</artifactId>   <version>2.0.2.RELEASE</version>   <relativePath/> <!-- lookup parent from repository -->  </parent>   <properties>   <project.build.sourceEncoding>UTF-</project.build.sourceEncoding>   <project.reporting.outputEncoding>UTF-</project.reporting.outputEncoding>   <java.version>1.8</java.version>   <spring-cloud.version>Finchley.RC2</spring-cloud.version>  </properties>   <dependencies>   <dependency>     <groupId>org.springframework.cloud</groupId>     <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>   </dependency>    <dependency>     <groupId>org.springframework.cloud</groupId>     <artifactId>spring-cloud-starter-ribbon</artifactId>   </dependency>    <dependency>     <groupId>org.springframework.cloud</groupId>     <artifactId>spring-cloud-starter-hystrix</artifactId>   </dependency>    <dependency>     <groupId>com.netflix.hystrix</groupId>     <artifactId>hystrix-javanica</artifactId>     <version>RELEASE</version>   </dependency>    <dependency>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-test</artifactId>     <scope>test</scope>   </dependency>   <dependency>     <groupId>com.netflix.hystrix</groupId>     <artifactId>hystrix-core</artifactId>     <version>RELEASE</version>   </dependency>    <dependency>      <groupId>com.netflix.hystrix</groupId>      <artifactId>hystrix-core</artifactId>      <version>RELEASE</version>    </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>   <build>   <plugins>     <plugin>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-maven-plugin</artifactId>     </plugin>   </plugins>  </build>   <repositories>   <repository>     <id>spring-milestones</id>     <name>Spring Milestones</name>     <url>https://repo.spring.io/milestone</url>     <snapshots>      <enabled>false</enabled>     </snapshots>   </repository>  </repositories>  </project>

在程序的启动类ServiceRibbonApplication 加@EnableHystrix注解开启Hystrix

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持武林网。

发表评论 共有条评论
用户名: 密码:
验证码: 匿名发表