SpringBoot整合Dubbo踩坑日记:空指针,连接超时,消费者找不到提供者

SpringBoot整合Dubbo踩坑日记:空指针,连接超时,消费者找不到提供者

不说明环境的都是流氓

• SpringBoot 2.2.1
• Dubbo-SpringBoot 0.2.0
• Dubbo 2.6.2
• curator 2.12.0
• jdk 1.8

问题描述

RT,就不多BB了,赶紧进正题,这个问题浪费了我2个小时…如果是xml不存在这个问题

解决方法(服务者消费者都需要更改)

去掉SpringBoot配置文件application.properties中的

dubbo.scan.base-package=com.*.*

在启动类上加上以下注解

@EnableDubbo
@DubboComponentScan

完整启动类代码

@EnableDubbo
@DubboComponentScan
@SpringBootApplication
public class GmallUserApplication {

    public static void main(String[] args) {
        SpringApplication.run(GmallUserApplication.class, args);
    }

}

完整pom文件如下

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.zfbgt</groupId>
    <artifactId>gmall-user</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>gmall-user</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--公共api-->
        <dependency>
            <groupId>com.zfbgt</groupId>
            <artifactId>gmall-interface</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <!--SpringBoot整合Dubbo-->
        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>0.2.0</version>
        </dependency>
        <!--Dubbo-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>dubbo</artifactId>
            <version>2.6.2</version>
        </dependency>
        <!-- curator-framework -->
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>2.12.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

最后提一下,启动顺序是提供者>消费者,如果启动顺序不对会报错,如果想跳过检查可以在消费者里配置

dubbo.consumer.check=false

完结撒花