什么是微服务

微服务与微服务架构

微服务优缺点

优点
缺点

微服务技术栈有哪些

为什么选择springCloud作为微服务架构

springCloud是什么

springCloud与springCloud区别

springCloud与Dubbo区别

微服务构建

父工程搭建

搭建一个maven项目，什么都不要勾选 --> spring_cloud
删除src

pom

 <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>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>1.5.9.RELEASE</version>
            </dependency>

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.0.4</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.0.31</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.0</version>
            </dependency>
            <dependency>
                <groupId>ch.qos.logback</groupId>
                <artifactId>logback-core</artifactId>
                <version>1.2.3</version>
            </dependency>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>

            <!--热部署，立马生效-->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>springloaded</artifactId>
                <version>1.2.0.RELEASE</version>
            </dependency>
            <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <version>1.5.9.RELEASE</version>
            </dependency>

API公共模块搭建

搭建模块API(maven)
创建Dept,目的让其他模块公共引用，提高代码复用

Dept

@NoArgsConstructor //无参构造
@Data //提供getset方法
@Accessors // 赋值的时候连着赋值
public class Dept implements Serializable {

    private Long deptId;
    private String dName;
    private String dbSource;
}

pom

       //目的是dept的注解起作用
         <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>

搭建服务提供者项目

搭建模块cloud_provider（先创建maven，然后在写springboot启动项目，一下的微服务和springboot都会这样操作）

pom

  <dependency>
            <groupId>com.springcloud</groupId>
            <artifactId>cloud_api</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>

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

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-jetty -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
            <version>2.1.6.RELEASE</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


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

        <!--热部署-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

        <!-- eureka客户端注册需要引入  -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>

        <!-- eureka 点击服务名称跳转页面的内容监控 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <version>1.5.9.RELEASE</version>
        </dependency>

整合mybatis，具体看git

DeptController,主要是暴露resultful风格的API,区别于RPC的API

package com.springcloud.controller;


import com.hongdou.entity.Dept;
import com.springcloud.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;

import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
public class DeptController {

    @Autowired
    private DeptService deptService;

    @RequestMapping(value = "/dept/add", method = RequestMethod.POST)
    public boolean add(@RequestBody Dept dept) {
        return deptService.add(dept);
    }

    @RequestMapping(value = "/dept/get/{id}", method = RequestMethod.GET)
    public Dept get(@PathVariable("id") Long id) {
        return deptService.get(id);
    }

    @RequestMapping(value = "/dept/list", method = RequestMethod.GET)
    public List<Dept> list() {
        return deptService.list();
    }




}

properties.yml

server:
  port: 8081

mybatis:
  config-location: classpath:mybatis/mybatis.cfg.xml #mybatis配置文件所在路径
  type-aliases-package: com.hongdou.entity #所有Entity别名类所在的包
  mapper-locations:
  - classpath:mybatis/mapper/**/*.xml  #mapper 映射的文件

spring:
  application:
    name: cloud-provider
  datasource:
    driver-class-name: org.gjt.mm.mysql.Driver  #mysql驱动包
    url: jdbc:mysql://192.168.3.75:3306/xiaoke  #s数据库名称
    type: com.alibaba.druid.pool.DruidDataSource #当前数据源操作类型
    username: root
    password: 123456
    dbcp2:
      min-idle: 5  #数据库连接池的最小维持连接数
      initial-size: 5 #初始化连接数
      max-total: 5   #最大连接数
      max-wait-millis: 200  #等待连接获取的最大超时时间

搭建服务消费者项目

搭建consumer_dept项目，调用resultful服务方项目
```
application.yml
```
```
server:
  port: 8082
```

controller,这里为了方便直接用contrller层调用了，主要使用RestTemplate调用

package com.springcloud.controller;

import com.hongdou.entity.Dept;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;


import java.util.List;

@RestController
@RequestMapping("consumer")
public class DeptController {

    private static final String REST_URL_PREFIX = "http://localhost:8081";

    @Autowired
    private RestTemplate restTemplate;

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

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

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

    @RequestMapping(value = "/dept/discovery", method = RequestMethod.GET)
    public Object getDiscovery(){
     return restTemplate.getForObject(REST_URL_PREFIX + "/dept/discovery", Object.class);
    }

}

配置类

package com.springcloud.config;

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

@Configuration
public class ConfigBean {

    @Bean
    public RestTemplate getRestTemplate() {
        return new RestTemplate();
    }
}

pom

        <dependency>
            <groupId>com.springcloud</groupId>
            <artifactId>cloud_api</artifactId>
            <version>${project.version}</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- Ribbon相关 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-ribbon</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>

        <!--热部署-->
        <!-- https://mvnrepository.com/artifact/org.springframework/springloaded -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
            <version>1.2.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

git地址：[email protected]:Xiaokeworksveryhard/spring_cloud.git

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微服务&springCloud

什么是微服务

微服务与微服务架构

微服务优缺点

微服务技术栈有哪些

为什么选择springCloud作为微服务架构

springCloud是什么

springCloud与springCloud区别

springCloud与Dubbo区别

微服务构建

父工程搭建

API公共模块搭建

搭建服务提供者项目

搭建服务消费者项目

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