开发课程服务模块

基于dubbo的服务，一般先定义api接口，前面的都是基于thrift的，我们先写一个thrift的文件，然后根据配置文件升成对应的api，dubbo我们相当于先手写一个api的模块。

稍微复杂

• 总体思想

就不在复制代码了只通过截图来讲述功能，可以参考源码，本次跟用到了上次springboot集成dubbo的方式。

1. course-dubbo-service-api   是负责提供接口的服务

2. course-dubbo-service 是course-dubbo-service-api的实现

3. course-dubbo-service 需要依赖原始的user-thrift-service-api的原生DTO类 和 user-thrift-service中的方法实现。

4. course-dubbo-service调用user-thrift-service 是用过thrift的方式完成的调用。因为user-thrift-service本身就是通过thrift生成对应的java类。

• user-thrift-service 和 user-thrift-service-api

1. user-thrift-service-api 做了thrift的修改，增加了老师的DTO和ID来获取用户的信息，所以需要重新通过thrift命令生成对应的java类

2. user-thrift-service  实现了新增的通过ID来获取用户的信息的接口，并增加了UserMapper

3. user数据库中增加了一张关联表teacher表

• course-dubbo-service-api 和 course-dubbo-service

1. course-dubbo-service pom中引入了springboot，mysql的驱动，thrift，springboot-dubbo，user-thrift-service.jar,user-thrift-service-api.jar

2. course-dubbo-service 中注入thrift微服务的访问service，获取教师针对课程的教程信息访问user-thrift-service的微服务，通过thrift的方式。

3. application.properties 配置dubbo的配置，数据库配置，user-thrift-service的地址和端口

<?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">
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.idig8</groupId>
    <artifactId>course-dubbo-service</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>io.dubbo.springboot</groupId>
            <artifactId>spring-boot-starter-dubbo</artifactId>
            <version>1.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.thrift</groupId>
            <artifactId>libthrift</artifactId>
            <version>0.10.0</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.44</version>
        </dependency>
        <dependency>
            <groupId>com.idig8</groupId>
            <artifactId>course-dubbo-service-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>com.idig8</groupId>
            <artifactId>user-thrift-service</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.idig8</groupId>
            <artifactId>user-thrift-service-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies></project>

作者：IT人故事会
链接：https://www.jianshu.com/p/bbadef9f1d57