SpringCloud：搭建微服务项目框架 microservicecloud

1.搭建整体父工程 microservicecloud

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

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

1.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.fdzang.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>1.16.18</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>

        <dependency>

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

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

            <version>1.5.9.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>1.0.31</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>

    </dependencies>

  </dependencyManagement>

  <build>

    <finalName>microservicecloud</finalName>

    <resources>

        <resource>

            <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>

</project>

2.公共子模块Module microservicecloud-api

在父工程下新建Maven Module

1.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.fdzang.springcloud</groupId>

    <artifactId>microservicecloud</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

  <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>

2.新建部门Entity且配合lombok使用

package com.fdzang.springcloud.entity;

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 {// entity --orm--- db_table

    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;

    }

}

3.生成jar

mvn clean --> mvn 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。

3. 部门微服务提供者Module microservicecloud-provider-dept-8001

在父工程下新建Maven Module

1.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.fdzang.springcloud</groupId>

    <artifactId>microservicecloud</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

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

  <dependencies>

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

        <dependency>

            <groupId>com.fdzang.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>

        </dependency>

        <dependency>

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

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

        </dependency>

    </dependencies>

</project>

2.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.fdzang.springcloud.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

   datasource:

    type: com.alibaba.druid.pool.DruidDataSource            # 当前数据源操作类型

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

    url: jdbc:mysql://localhost:3306/cloud01              # 数据库名称

    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

3.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.MySQL创建部门数据库脚本

DROP DATABASE IF EXISTS cloud01;

CREATE DATABASE cloud01 CHARACTER SET UTF8;

USE cloud01;

CREATE TABLE dept

(

  deptno BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT,

  dname VARCHAR(60),

  db_source   VARCHAR(60)

);

 

INSERT INTO dept(dname,db_source) VALUES('开发部',DATABASE());

INSERT INTO dept(dname,db_source) VALUES('人事部',DATABASE());

INSERT INTO dept(dname,db_source) VALUES('财务部',DATABASE());

INSERT INTO dept(dname,db_source) VALUES('市场部',DATABASE());

INSERT INTO dept(dname,db_source) VALUES('运维部',DATABASE());

5.DeptDao部门接口

package com.fdzang.springcloud.dao;

import java.util.List;

import org.apache.ibatis.annotations.Mapper;

import com.fdzang.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

<?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.fdzang.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部门服务接口

package com.fdzang.springcloud.service;

import java.util.List;

import com.fdzang.springcloud.entity.Dept;

public interface DeptService

{

    public boolean add(Dept dept);

    public Dept get(Long id);

    public List<Dept> list();

}

8.DeptServiceImpl部门服务接口实现类

package com.fdzang.springcloud.service.impl;

import java.util.List;

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

import org.springframework.stereotype.Service;

import com.fdzang.springcloud.dao.DeptDao;

import com.fdzang.springcloud.entity.Dept;

import com.fdzang.springcloud.service.DeptService;

@Service

public class DeptServiceImpl implements DeptService{

    @Autowired

    private DeptDao dao;

    @Override

    public boolean add(Dept dept){

        return dao.addDept(dept);

    }

    @Override

    public Dept get(Long id){

        return dao.findById(id);

    }

    @Override

    public List<Dept> list(){

        return dao.findAll();

    }

}

9.DeptController部门微服务提供者REST

package com.fdzang.springcloud.controller;

import java.util.List;

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

import org.springframework.cloud.client.ServiceInstance;

import org.springframework.cloud.client.discovery.DiscoveryClient;

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

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

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

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

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

import com.fdzang.springcloud.entity.Dept;

import com.fdzang.springcloud.service.DeptService;

@RestController

public class DeptController{

    @Autowired

    private DeptService service;

    @Autowired

    private DiscoveryClient client;

    @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();

    }

}

10.DeptProvider8001_App主启动类DeptProvider8001_App

package com.fdzang.springcloud;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@SpringBootApplication

public class DeptProvider8001_App

{

    public static void main(String[] args)

    {

        SpringApplication.run(DeptProvider8001_App.class, args);

    }

}

11.测试

http://localhost:8001/dept/list

4.部门微服务消费者Module microservicecloud-consumer-dept-80

1.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.fdzang.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.fdzang.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>

        </dependency>

        <dependency>

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

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

        </dependency>

    </dependencies>

</project>

2.application.yml

server:

  port: 80

3.com.fdzang.springcloud.cfgbeans包下ConfigBean的编写

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

package com.fdzang.springcloud.cfgbeans;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.client.RestTemplate;

import com.netflix.loadbalancer.IRule;

import com.netflix.loadbalancer.RetryRule;

@Configuration

public class ConfigBean{  //boot -->spring   applicationContext.xml --- @Configuration配置   ConfigBean = applicationContext.xml

    @Bean

    public RestTemplate getRestTemplate(){

        return new RestTemplate();

    }

}

4.com.fdzang.springcloud.controller包下新建DeptController_Consumer部门微服务消费者REST

package com.fdzang.springcloud.controller;

 

import java.util.List;

 

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 com.fdzang.springcloud.entity.Dept;

 

@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);

    }   

}

5.DeptConsumer80_App主启动类

package com.fdzang.springcloud;

 

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

 

@SpringBootApplication

public class DeptConsumer80_App

{

  public static void main(String[] args)

  {

   SpringApplication.run(DeptConsumer80_App.class, args);

  }

}

6.测试

http://localhost/consumer/dept/list

5.题外话之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

官网地址：https://docs.spring.io/spring-framework/docs/4.3.7.RELEASE/javadoc-api/org/springframework/web/client/RestTemplate.html

使用
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。

资料来源：www.atguigu.com 侵删

巴特西

SpringCloud：搭建微服务项目框架 microservicecloud

1.搭建整体父工程 microservicecloud

2.公共子模块Module microservicecloud-api

3. 部门微服务提供者Module microservicecloud-provider-dept-8001

4.部门微服务消费者Module microservicecloud-consumer-dept-80

5.题外话之RestTemplate

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