vlambda博客
学习文章列表

问题描述:

原来spring boot 2.x+canal服务引入dubbo服务消费者，配置都配过了,发现dubbo消费者每次请求都是报空指针异常。如下图

项目结构：

spring 2.x、canal消费者、kafa集成dubbo消费者服务

排查如下：

首先查看引入配置如下：

引入dubbo包

<dependency> <groupId>com.alibaba.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>0.2.0</version></dependency>

在配置文件中配置

# Base packages to scan Dubbo Components (e.g., @Service, @Reference)dubbo.scan.basePackages= com.xx.canal.xx# Dubbo Config propertiesdubbo.application.name = canalconsumer
## ProtocolConfig Beandubbo.protocol.id=dubbodubbo.protocol.name=dubbodubbo.protocol.port=29952dubbo.application.qos-enable=falsedubbo.provider.timeout=3000dubbo.provider.threads=2000dubbo.registry.protocol=zookeeperdubbo.registry.address=xxx

在application添加dubbo注解

@SpringBootApplication@EnableDubbo@EnableDubboConfig

在调用包引入@Reference

@Referenceprivate IPopFlowConfigEsService popFlowConfigEsService;

问题寻找过程:

首先按照相关的网上尝试

将配置文件改成dubbo.xml

将注解改成其他

....

后面发现

原来dubbo

需要在@@Reference加上版本号

@Reference(version="1.0.0",timeout=5000)

相关的整合信息推荐：

https://blog.csdn.net/weixin_40288413/article/details/80792302?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522159368812419195162547488%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=159368812419195162547488&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_click~default-1-80792302.first_rank_ecpm_v3_pc_rank_v2&utm_term=springboot%E6%95%B4%E5%90%88dubbo
https://blog.csdn.net/J080624/article/details/84033579?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522159368812419195162547488%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=159368812419195162547488&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_click~default-2-84033579.first_rank_ecpm_v3_pc_rank_v2&utm_term=springboot%E6%95%B4%E5%90%88dubbo