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

2019年07月19日  | 移动技术网IT编程  | 我要评论

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

@restcontroller
public class moviecontroller {
@autowired
private 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

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