1 服务提供者

1 新建父工程

1、新建一个Maven工程

图片说明

2、删除src

图片说明

3、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>

        <groupId>com.xianhuii</groupId>
        <artifactId>springcloud</artifactId>
        <version>1.0-SNAPSHOT</version>

        <!-- 打包方式：pom -->
        <packaging>pom</packaging>

        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <junit.version>4.12</junit.version>
            <log4j.version>1.2.17</log4j.version>
            <lombok.version>1.16.18</lombok.version>
        </properties>

        <dependencyManagement>
            <dependencies>
                <!-- SpringCloud -->
                <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-dependencies -->
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Greenwich.SR1</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>

                <!-- SpringBoot -->
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-dependencies</artifactId>
                    <version>2.1.4.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>

                <!-- 数据库 -->
                <dependency>
                    <groupId>mysql</groupId>
                    <artifactId>mysql-connector-java</artifactId>
                    <version>8.0.18</version>
                </dependency>

                <!-- 数据源 -->
                <dependency>
                    <groupId>com.alibaba</groupId>
                    <artifactId>druid</artifactId>
                    <version>1.1.21</version>
                </dependency>
                <!-- mybatis -->
                <dependency>
                    <groupId>org.mybatis.spring.boot</groupId>
                    <artifactId>mybatis-springboot-starter</artifactId>
                    <version>1.3.2</version>
                </dependency>

                <!-- junit -->
                <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <version>${junit.version}</version>
                </dependency>

                <!-- lombok -->
                <dependency>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${lombok.version}</version>
                </dependency>

                <!-- Log4j -->
                <dependency>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                    <version>1.2.17</version>
                </dependency>

                <!-- logback -->
                <dependency>
                    <groupId>ch.qos.logback</groupId>
                    <artifactId>logback-core</artifactId>
                    <version>1.2.3</version>
                </dependency>
            </dependencies>
        </dependencyManagement>
    </project>

2 API模块

1、新建模块

图片说明

2、pom

    <?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>
            <artifactId>springcloud</artifactId>
            <groupId>com.xianhuii</groupId>
            <version>1.0-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>

        <artifactId>springcloud-api</artifactId>

        <!-- 当前Module需要的依赖，如果父依赖中已经配置了版本，这里就不用写了。 -->
        <dependencies>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
            </dependency>
        </dependencies>    
    </project>

3、创建数据库

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4、实体类

Dept

package com.xianhuii.springcloud.pojo;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

import java.io.Serializable;

@JsonIgnoreProperties(value = { "hibernateLazyInitializer", "handler" })
public class Dept implements Serializable {
    private static final long serialVersionUID = 42L;

    private Long deptno;    // 主键
    private String dname;   // 部门名称
    private String dbSource;   // 数据库名称

    public Dept() {
    }

    public Dept(String dname) {
        this.dname = dname;
    }

    public Dept(Long deptno, String dname, String dbSource) {
        this.deptno = deptno;
        this.dname = dname;
        this.dbSource = dbSource;
    }

    public Long getDeptno() {
        return deptno;
    }

    public void setDeptno(Long deptno) {
        this.deptno = deptno;
    }

    public String getDname() {
        return dname;
    }

    public void setDname(String dname) {
        this.dname = dname;
    }

    public String getdbSource() {
        return dbSource;
    }

    public void setdbSource(String dbSource) {
        this.dbSource = dbSource;
    }
}

3 provider-dept模块

1、创建模块

图片说明

2、pom

    <?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>
            <artifactId>springcloud</artifactId>
            <groupId>com.xianhuii</groupId>
            <version>1.0-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>

        <artifactId>springcloud-provider-dept-8001</artifactId>

        <dependencies>
            <!-- 实体类 -->
            <dependency>
                <groupId>com.xianhuii</groupId>
                <artifactId>springcloud-api</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <!-- junit -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
            </dependency>
            <!-- 数据库 -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
            <!-- 数据源 -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
            </dependency>
            <!-- logback -->
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
            </dependency>
            <!-- mybatis -->
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
            </dependency>
            <!-- test -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-test</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <!-- jetty -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jetty</artifactId>
            </dependency>
            <!-- 热部署 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
            </dependency>
        </dependencies>
    </project>

3、application.yaml

    server:
      port: 8001
    mybatis:
      mapper-locations: classpath:/mybatis/mapper/*.xml
      configuration:
        map-underscore-to-camel-case: true
    spring:
      application:
        name: springcloud-provider-dept
      datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://localhost:3306/db01?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
        username: root
        password: root

4、DAO层

DeptMapper

package com.xianhuii.springcloud.mapper;

import com.xianhuii.springcloud.pojo.Dept;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

import java.util.List;

@Mapper
@Repository
public interface DeptMapper {
    boolean addDept(Dept dept);
    Dept queryById(Long id);
    List<Dept> queryAll();
}

DeptMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xianhuii.springcloud.mapper.DeptMapper">
    <!--boolean addDept(Dept dept)-->
    <insert id="addDept" parameterType="Dept">
        insert into db01 (dname, db_source)
        values (#{dname}, DATABASE())
    </insert>
    <!--Dept queryById(Long id)-->
    <select id="queryById" resultType="Dept" parameterType="Long">
        select * from dept where deptno = #{deptno}
    </select>
    <!--List<Dept> queryAll()-->
    <select id="queryAll" resultType="Dept">
        select * from dept
    </select>
</mapper>

5、Service层

DeptService

package com.xianhuii.springcloud.service;

import com.xianhuii.springcloud.pojo.Dept;

import java.util.List;

public interface DeptService {
    boolean addDept(Dept dept);
    Dept queryById(Long id);
    List<Dept> queryAll();
}

DeptServiceImpl

package com.xianhuii.springcloud.service;

import com.xianhuii.springcloud.mapper.DeptMapper;
import com.xianhuii.springcloud.pojo.Dept;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class DeptServiceImpl implements DeptService {
    @Autowired
    private DeptMapper deptMapper;

    @Override
    public boolean addDept(Dept dept) {
        return deptMapper.addDept(dept);
    }

    @Override
    public Dept queryById(Long id) {
        return deptMapper.queryById(id);
    }

    @Override
    public List<Dept> queryAll() {
        return deptMapper.queryAll();
    }
}

6、Controller层

DeptController

package com.xianhuii.springcloud.controller;

import com.xianhuii.springcloud.pojo.Dept;
import com.xianhuii.springcloud.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**

 * 提供RESTful服务
   */
   @RestController
   public class DeptController {
   @Autowired
   private DeptService deptService;

   @PostMapping("/dept/add")
   public boolean addDept(Dept dept) {
       return deptService.addDept(dept);
   }

   @GetMapping("/dept/get/{id}")
   public Dept getDept(@PathVariable("id") Long id) {
       return deptService.queryById(id);
   }

   @GetMapping("/dept/list")
   public List<Dept> queryAll() {
       return deptService.queryAll();
   }
   }

7、启动类

DeptProvider_8001

package com.xianhuii.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DeptProvider_8001 {
    public static void main(String[] args) {
        SpringApplication.run(DeptProvider_8001.class, args);
    }
}

2 服务消费者

1 springcloud-consumer-dept-80模块

1、新建模块

图片说明

2、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">
        <parent>
            <artifactId>springcloud</artifactId>
            <groupId>com.xianhuii</groupId>
            <version>1.0-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>

        <artifactId>springcloud-consumer-dept-80</artifactId>

        <dependencies>
            <!-- 实体类 -->
            <dependency>
                <groupId>com.xianhuii</groupId>
                <artifactId>springcloud-api</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <!-- Web -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <!-- 热部署 -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
            </dependency>
        </dependencies>

    </project>

3、application.yaml

    server:
      port: 80

4、ConfigBean

    package com.xianhuii.springcloud.config;

    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.client.RestTemplate;

    /**
     * 相当于Spring里的applicationContext.xml
     */
    @Configuration
    public class ConfigBean {
        @Bean
        public RestTemplate getRestTemplate() {
            return new RestTemplate();
        }
    }

5、DeptConsumerController

    package com.xianhuii.springcloud.controller;

    import com.xianhuii.springcloud.pojo.Dept;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.client.RestTemplate;

    import java.util.List;

    /**
     * 消费者：不应该有Service
     * RestTemplate：提供多种便捷访问远程http服务的方法，简单的RESTful服务模板
     * (url, 参数, responseType)
     */
    @RestController
    public class DeptConsumerController {
        @Autowired
        private RestTemplate restTemplate;
        private static final String REST_URL_PREFIX = "http://localhost:8001";

        @RequestMapping("/consumer/dept/get/{id}")
        public Dept get(@PathVariable("id") Long id) {
            return restTemplate.getForObject(REST_URL_PREFIX + "/dept/get/" + id, Dept.class);
        }

        @RequestMapping("/consumer/dept/add")
        public boolean add(Dept dept) {
            return restTemplate.postForObject(REST_URL_PREFIX + "/dept/add", dept, Boolean.class);
        }

        @RequestMapping("/consumer/dept/list")
        public List<Dept> list() {
            return restTemplate.getForObject(REST_URL_PREFIX + "/dept/list", List.class);
        }
    }

6、DeptConsumer_80

    package com.xianhuii.springcloud;

    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;

    @SpringBootApplication
    public class DeptConsumer_80 {
        public static void main(String[] args) {
            SpringApplication.run(DeptConsumer_80.class, args);
        }
    }

SpringCloud环境搭建

1 服务提供者

1 新建父工程

1、新建一个Maven工程

2、删除src

3、pom.xml

2 API模块

1、新建模块

2、pom

3、创建数据库

4、实体类

3 provider-dept模块

1、创建模块

2、pom

3、application.yaml

4、DAO层

5、Service层

6、Controller层

7、启动类

2 服务消费者

1 springcloud-consumer-dept-80模块

1、新建模块

2、pom.xml

3、application.yaml

4、ConfigBean

5、DeptConsumerController

6、DeptConsumer_80