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二、springcloud微服务测试环境搭建

版本说明：

springcloud:Greenwich.SR3

springboot:2.1.8

1、构建步骤

1.1、microservicecloud整体父工程Project

新建父工程microservicecloud，切记是Packageing是pom模式

二、springcloud微服务测试环境搭建-LMLPHP

此maven project目的：主要是定义POM文件，将后续各个子模块公用的jar包等统一提出来，类似一个抽象父类

pom.xml

<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.jiatp.springcloud</groupId>

  <artifactId>microservicecloud</artifactId>

  <version>0.0.1-SNAPSHOT</version>

  <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>1.18.10</lombok.version>

  </properties>

  <dependencyManagement>

   <dependencies>

     <dependency>

       <groupId>org.springframework.cloud</groupId>

       <artifactId>spring-cloud-dependencies</artifactId>

       <version>Greenwich.SR3</version>

       <type>pom</type>

       <scope>import</scope>

     </dependency>

     <dependency>

       <groupId>org.springframework.boot</groupId>

       <artifactId>spring-boot-dependencies</artifactId>

       <version>2.1.8.RELEASE</version>

       <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>1.1.20</version>

     </dependency>

     <dependency>

       <groupId>org.mybatis.spring.boot</groupId>

       <artifactId>mybatis-spring-boot-starter</artifactId>

       <version>2.1.0</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>

   </dependencies>

  </dependencyManagement>

  <build>

   <finalName>microservicecloud</finalName>

   <resources>

     <resource> <!--以$ 开头 在src/main/resources目录下的 都能读取 -->

       <directory>src/main/resources</directory>

       <filtering>true</filtering>

     </resource>

   </resources>

   <plugins>

     <plugin>

       <groupId>org.apache.maven.plugins</groupId>

       <artifactId>maven-resources-plugin</artifactId>

       <configuration>

         <delimiters>

          <delimit>$</delimit>

         </delimiters>

       </configuration>

     </plugin>

   </plugins>

  </build>

  <modules>

  	<module>microservicecloud-api</module>

  	<module>microservicecloud-provider-dept-8001</module>

  	<module>microservicecloud-consumer-dept-80</module>

  </modules>

</project>

1.2、microservicecloud-api公共子模块Module

右击父工程microservicecloud新建maven module，Packageing是jar模式,创建完成后请回到父工程查看pom文件。

二、springcloud微服务测试环境搭建-LMLPHP

pom.xml

<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>

  <!-- 子类里面显示声明才能有明确的继承表现，无意外就是父类的默认版本否则自己定义 -->

    <groupId>com.jiatp.springcloud</groupId>

    <artifactId>microservicecloud</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

  <!-- 当前Module我自己叫什么名字 -->

  <artifactId>microservicecloud-api</artifactId>

  <dependencies><!-- 当前Module需要用到的jar包，按自己需求添加，如果父类已经包含了，可以不用写版本号 -->

   <dependency>

     <groupId>org.projectlombok</groupId>

     <artifactId>lombok</artifactId>

   </dependency>

  </dependencies>

</project>

新建部门Entity且配合lombok使用



package com.atguigu.springcloud.entities;

import java.io.Serializable;

import lombok.Data;

import lombok.NoArgsConstructor;

import lombok.experimental.Accessors;

@SuppressWarnings("serial")

@NoArgsConstructor

@Data

@Accessors(chain=true)

public class Dept implements Serializable //必须序列化

{

  private Long  deptno;   //主键

  private String  dname;   //部门名称

  private String  db_source;//来自那个数据库，因为微服务架构可以一个服务对应一个数据库，同一个信息被存储到不同数据库

  public Dept(String dname)

  {

   super();

   this.dname = dname;

  }

}

右键microservicecloud-api选择Run as ,先mvn clean 后maven install后给其它模块引用，达到通用目的。

也即需要用到部门实体的话，不用每个工程都定义一份，直接引用本模块即可。

1.3、microservicecloud-provider-dept-8001微服务提供者Module

1、新建microservicecloud-provider-dept-8001 提供者Module,同理

2、pom.xml

<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>com.jiatp.springcloud</groupId>

    <artifactId>microservicecloud</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

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

  <dependencies>

   <dependency><!-- 引入自己定义的api通用包，可以使用Dept部门Entity -->

     <groupId>com.jiatp.springcloud</groupId>

     <artifactId>microservicecloud-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>ch.qos.logback</groupId>

     <artifactId>logback-core</artifactId>

   </dependency>

   <dependency>

     <groupId>org.mybatis.spring.boot</groupId>

     <artifactId>mybatis-spring-boot-starter</artifactId>

   </dependency>

   <dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-starter-jetty</artifactId>

   </dependency>

   <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>

   <!-- 修改后立即生效，热部署 -->

   <dependency>

     <groupId>org.springframework</groupId>

     <artifactId>springloaded</artifactId>

     <version>1.2.6.RELEASE</version>

   </dependency>

   <dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-devtools</artifactId>

   </dependency>

  </dependencies>

</project>

3、application.yml

server:

  port: 8001

mybatis:

  config-location: classpath:mybatis/mybatis.cfg.xml  # mybatis配置文件所在路径

  type-aliases-package: com.jiatp.springcloud.entity  # 扫描此包下的entity ->所有entity别名类所在包

  mapper-locations:

  - classpath:mybatis/mapper/**/*.xml                 # mapper映射文件

spring:

  application:

    name: microservicecloud-dept                      # 很重要，对外暴露的微服务名字

  datasource:

    type: com.alibaba.druid.pool.DruidDataSource      # 数据源类型

    driver-class-name: org.gjt.mm.mysql.Driver        # 数据库驱动包

    url: jdbc:mysql://localhost:3306/cloudDB01?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone = GMT

    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-idle: 5                                     # 最大连接数

4、工程src/main/resources目录下新建mybatis文件夹后新建mybatis.cfg.xml文件

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

<!DOCTYPE configuration

        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

<settings>

    <setting name="cacheEnabled" value="true"/><!-- 二级缓存开启 -->

</settings>

    </configuration>

4、创建cloudDB01 数据库，新建dept表并且插入数据

5、编写DeptMapper接口

package com.jiatp.springcloud.dao;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.jiatp.springcloud.entity.Dept;

@Mapper

public interface DeptDao {

	public boolean addDept(Dept dept);

	public Dept findById(Long id);

	public List<Dept> findAll();

}

6、工程src/main/resources/mybatis目录下新建mapper文件夹后再建DeptMapper.xml

注意：这里如果采用注解方式，可以直接在DeptMapper接口上直接写sql语句

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

<!DOCTYPE mapper

        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.jiatp.springcloud.dao.DeptDao">

 <select id="findById" resultType="Dept" parameterType="Long">

   select deptno,dname,db_source from dept where deptno=#{deptno};

  </select>

  <select id="findAll" resultType="Dept">

   select deptno,dname,db_source from dept;

  </select>

  <insert id="addDept" parameterType="Dept">

   INSERT INTO dept(dname,db_source) VALUES(#{dname},DATABASE());

  </insert>

</mapper>

7、DeptService和DeptServiceImpl部门服务接口和实现类

package com.jiatp.springcloud.service;

import java.util.List;

import com.jiatp.springcloud.entity.Dept;

public interface DeptService {

	public boolean add(Dept dept);

	public Dept get(Long id);

	public List<Dept> list();

}

//---------------------------------------------

package com.jiatp.springcloud.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import com.jiatp.springcloud.dao.DeptDao;

import com.jiatp.springcloud.entity.Dept;

import com.jiatp.springcloud.service.DeptService;

@Service

public class DeptServiceImpl implements DeptService{

	@Autowired

	private DeptDao deptdao;

	@Override

	public boolean add(Dept dept) {

		// TODO Auto-generated method stub

		return deptdao.addDept(dept);

	}

	@Override

	public Dept get(Long id) {

		// TODO Auto-generated method stub

		return deptdao.findById(id);

	}

	@Override

	public List<Dept> list() {

		// TODO Auto-generated method stub

		return deptdao.findAll();

	}

}

8、编写controller

@RestController

public class DeptController

{

  @Autowired

  private DeptService service;

  @RequestMapping(value="/dept/add",method=RequestMethod.POST)

  public boolean add(@RequestBody Dept dept)

  {

   return service.add(dept);

  }

  @RequestMapping(value="/dept/get/{id}",method=RequestMethod.GET)

  public Dept get(@PathVariable("id") Long id)

  {

   return service.get(id);

  }

  @RequestMapping(value="/dept/list",method=RequestMethod.GET)

  public List<Dept> list()

  {

   return service.list();

  }

}

9、编写DeptProvider8001_App主启动类



@SpringBootApplication

public class DeptProvider8001_App

{

  public static void main(String[] args)

  {

   SpringApplication.run(DeptProvider8001_App.class, args);

  }

}

二、springcloud微服务测试环境搭建-LMLPHP

测试：http://localhost:8001/dept/get/2

1.4、microservicecloud-consumer-dept-80部门微服务消费者Module

1、新建microservicecloud-consumer-dept-80，同理

2、pom.xml

<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>com.jiatp.springcloud</groupId>

    <artifactId>microservicecloud</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

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

  <description>部门微服务消费者</description>

  <dependencies>

   <dependency><!-- 自己定义的api -->

     <groupId>com.jiatp.springcloud</groupId>

     <artifactId>microservicecloud-api</artifactId>

     <version>${project.version}</version>

   </dependency>

   <dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-starter-web</artifactId>

   </dependency>

   <!-- 修改后立即生效，热部署 -->

  <dependency>

     <groupId>org.springframework</groupId>

     <artifactId>springloaded</artifactId>

     <version>1.2.6.RELEASE</version>

   </dependency>

   <dependency>

     <groupId>org.springframework.boot</groupId>

     <artifactId>spring-boot-devtools</artifactId>

   </dependency>

  </dependencies>

</project>

3、yml配置

server:

  port: 80

4、com.jiatp.springcloud包下ConfigBean的编写

类似spring里面的applicationContext.xml写入的注入Bean

@Configuration

public class ConfigBean {  //优化spring,从spring(applicationContext.xml)== @Configuration配置

	@Bean

	@LoadBalanced    //开启负载均衡

    public RestTemplate restTemplate(){

        return new RestTemplate();

    }

RestTemplate提供了多种便捷访问远程Http服务的方法， 是一种简单便捷的访问restful服务模板类，是Spring提供的用于访问Rest服务的客户端模板工具集。 用法：使用restTemplate访问restful接口非常的简单粗暴无脑。

(url, requestMap, ResponseBean.class)这三个参数分别代表

REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。

5、controller编写

@RestController

public class DeptController_Consumer

{

    private static final String REST_URL_PREFIX = "http://localhost:8001";

    @Autowired

    private RestTemplate restTemplate;

    @RequestMapping(value="/consumer/dept/add")

    public boolean add(Dept dept)

    {

         return restTemplate.postForObject(REST_URL_PREFIX+"/dept/add", dept, Boolean.class);

    }

    @RequestMapping(value="/consumer/dept/get/{id}")

    public Dept get(@PathVariable("id") Long id)

    {

         return restTemplate.getForObject(REST_URL_PREFIX+"/dept/get/"+id, Dept.class);

    }

    @SuppressWarnings("unchecked")

    @RequestMapping(value="/consumer/dept/list")

    public List<Dept> list()

    {

         return restTemplate.getForObject(REST_URL_PREFIX+"/dept/list", List.class);

    }

}

6、DeptConsumer80_App主启动类

@SpringBootApplication

public class DeptConsumer80_App

{

  public static void main(String[] args)

  {

   SpringApplication.run(DeptConsumer80_App.class, args);

  }

}

测试：http://localhost/consumer/dept/list

04-13 10:39
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