小刘学习笔记

创建服务提供者

创建一个名为provider的模块

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>

    <parent>
        <groupId>ml.yompc.myshop.plus</groupId>
        <artifactId>parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>provider</artifactId>
    <packaging>pom</packaging>
    <url>http://www.yompc.ml</url>
    <inceptionYear>2019-Now</inceptionYear>

    <licenses>
        <license>
            <name>Apache 2.0</name>
            <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
        </license>
    </licenses>

    <developers>
        <developer>
            <id>yompc</id>
            <name>FengJia Liu</name>
            <email>yom535@outlook.com</email>
        </developer>
    </developers>

    <modules>
        <module>ums-admin-provider-api</module>
        <module>ums-admin-provider-service</module>
    </modules>
</project>

并在根的pom文件中加入模块

创建用户服务接口

创建模块ums-admin-provider-api

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>

    <parent>
        <groupId>ml.yompc.myshop.plus</groupId>
        <artifactId>provider</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>ums-admin-provider-api</artifactId>
    <packaging>jar</packaging>
    <url>http://www.yompc.ml</url>
    <inceptionYear>2018-Now</inceptionYear>

    <licenses>
        <license>
            <name>Apache 2.0</name>
            <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
        </license>
    </licenses>

    <developers>
        <developer>
            <id>yompc</id>
            <name>FengJia Liu</name>
            <email>yom535@outlook.com</email>
        </developer>
    </developers>

    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
        </dependency>
    </dependencies>
</project>

创建接口

package ml.yompc.myshop.plus.provider.api;

/**
 * @email yom535@outlook.com
 * @author: 有民(yom535)
 * @date: 2019/9/20
 * @time: 14:13
 */
public interface EchoService {
    public String Echo(String string);
}

并在provider的模块中添加进去

实现服务接口

创建模块ums-admin-provider-service

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>

    <parent>
        <groupId>ml.yompc.myshop.plus</groupId>
        <artifactId>provider</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>ums-admin-provider-service</artifactId>
    <packaging>jar</packaging>
    <url>http://www.yompc.ml</url>
    <inceptionYear>2018-Now</inceptionYear>

    <licenses>
        <license>
            <name>Apache 2.0</name>
            <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
        </license>
    </licenses>

    <developers>
        <developer>
            <id>yompc</id>
            <name>FengJia Liu</name>
            <email>yom535@outlook.com</email>
        </developer>
    </developers>

    <dependencies>
        <!-- Spring Boot -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!-- Spring Cloud -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-oauth2</artifactId>
        </dependency>

        <!-- Apache Dubbo -->
        <dependency>
            <groupId>com.alibaba.nacos</groupId>
            <artifactId>nacos-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-nacos</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.servlet</groupId>
                    <artifactId>servlet-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-serialization-kryo</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>org.apache.dubbo</groupId>
                    <artifactId>dubbo-common</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.alibaba.spring</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>

        <!-- DataSource -->
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
            <exclusions>
                <!-- 排除 tomcat-jdbc 以使用 HikariCP -->
                <exclusion>
                    <groupId>org.apache.tomcat</groupId>
                    <artifactId>tomcat-jdbc</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper-spring-boot-starter</artifactId>
        </dependency>

        <!-- Projects -->
        <dependency>
            <groupId>ml.yompc.myshop.plus</groupId>
            <artifactId>ums-admin-provider-api</artifactId>
            <version>${project.parent.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>ml.yompc.myshop.plus.provider.UmsAdminProviderApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>
application.yml
spring:
  application:
    name: ums-admin-provider
  main:
    allow-bean-definition-overriding: true
  datasource:
    type: com.zaxxer.hikari.HikariDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://den1.mysql4.gear.host:3306/mplusumsadmin?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: mplusumsadmin
    password: Ga0XRvG__0J5
    hikari:
      minimum-idle: 5
      idle-timeout: 600000
      maximum-pool-size: 10
      auto-commit: true
      pool-name: MyHikariCP
      max-lifetime: 1800000
      connection-timeout: 30000
      connection-test-query: SELECT 1

dubbo:
  scan:
    base-packages: ml.yompc.myshop.plus.provider.service
  protocol:
    name: dubbo
    port: -1
    serialization: kryo
  registry:
    address: nacos://nacos.yompc.ml
    port: 30848

mybatis:
  type-aliases-package: ml.yompc.myshop.plus.provider.domain
  mapper-locations: classpath:mapper/*.xml
实现接口
package ml.yompc.myshop.plus.provider.service;

import ml.yompc.myshop.plus.provider.api.EchoService;
import org.apache.dubbo.config.annotation.Service;

/**
 * @email yom535@outlook.com
 * @author: 有民(yom535)
 * @date: 2019/9/20
 * @time: 14:18
 */
@Service(version = "1.0.0")
public class EchoServiceImpl implements EchoService {
    @Override
    public String Echo(String string) {
        return "Hello Dubbo"+string;
    }
}

并生成mapper、domain等文件

测试数据库连接

package ml.yompc.myshop.plus.provider.tests;

import ml.yompc.myshop.plus.provider.mapper.UmsAdminMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.util.List;

/**
 * @email yom535@outlook.com
 * @author: 有民(yom535)
 * @date: 2019/9/20
 * @time: 14:31
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class UmsAdmin {
    @Autowired
    private UmsAdminMapper umsAdminMapper;

    @Test
    public void selectAll(){
        List<ml.yompc.myshop.plus.provider.domain.UmsAdmin> umsAdmins = umsAdminMapper.selectAll();
        umsAdmins.forEach(umsAdmin -> {
            System.out.println(umsAdmin);
        });
    }
}
此时启动服务，并检查是否注册到nacos

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