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
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@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
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<dependency> <groupid>com.netflix.hystrix</groupid> <artifactid>hystrix-javanica</artifactid> <version>release</version></dependency> |
完整pom.xml
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<?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服务器之家。
原文链接：https://blog.csdn.net/zjh_746140129/article/details/80697921
