《SpringCloud专题03》-微服务架构编码构建-服务提供者

1.微服务cloud整体聚合工程

1.1.父工程步骤

New Project

聚合总父工程名字

Maven选版本

字符编码

注解生效激活

java编译版本选8

File Type过滤

1.2.父工程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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itxiongmao.springcloud</groupId>
    <artifactId>springcloud2020</artifactId>
    <version>1.0-SNAPSHOT</version>

    <modules>
        <module>cloud-provider-payment8001</module>
    </modules>

    <packaging>pom</packaging>

    <!--统一管理jar包版本-->
    <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>
        <mysql.version>5.1.47</mysql.version>
        <druid.version>1.1.16</druid.version>
        <spring.boot.version>2.2.2.RELEASE</spring.boot.version>
        <spring.cloud.version>Hoxton.SR1</spring.cloud.version>
        <spring.cloud.alibaba.version>2.1.0.RELEASE</spring.cloud.alibaba.version>
        <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version>
    </properties>

    <!--子模块继承后,提供作用:锁定版本+子module不用groupId和version-->
    <dependencyManagement>
        <dependencies>
            <!--springboot 2.2.2-->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--Spring cloud Hoxton.SR1-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--Spring cloud alibaba 2.1.0.RELEASE-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring.cloud.alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                    <addResources>true</addResources>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <!--第三方maven私服-->
    <repositories>
        <repository>
            <id>nexus-aliyun</id>
            <name>Nexus aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

maven中跳过单元测试

2.Rest微服务工程搭建

2.1.Cloud-provider-payment8001 微服务提供者Module模块

2.1.1.建module

创建完成后回到父工程查看pom文件变化

2.1.2.改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>springcloud2020</artifactId>
        <groupId>com.itxiongmao.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-provider-payment8001</artifactId>


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.0.0</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

2.1.3.主启动

package com.itxiongmao;

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

@SpringBootApplication
public class PaymentMain8001 {

    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8001.class,args);
    }
}

2.1.4.写YML

server:
  port: 8001

spring:
  application:
    name: cloud-payment-service
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: org.gjt.mm.mysql.Driver
    url: jdbc:mysql://127.0.0.1:3306/db2020_cloud?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: 123456

mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.itxiongmao.springcloud.entities

2.1.5.测试数据库

-- ----------------------------
-- Table structure for payment
-- ----------------------------
DROP TABLE IF EXISTS `payment`;
CREATE TABLE `payment` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
  `serial` varchar(200) DEFAULT NULL COMMENT '支付流水号',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=36 DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='支付表';

-- ----------------------------
-- Records of payment
-- ----------------------------
INSERT INTO `payment` VALUES ('31', 'test001');
INSERT INTO `payment` VALUES ('32', 'test002');
INSERT INTO `payment` VALUES ('34', 'test003');

2.1.6.主实体Payment

新建一个module，专门把实体类做一个工程

package com.itxiongmao.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

/**
 * @BelongsProject: springcloud2020
 * @BelongsPackage: com.itxiongmao.springcloud.entities
 * @CreateTime: 2020-07-07 23:32
 * @Description: TODO
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
    private Long id;
    private String serial;
}

<?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>springcloud2020</artifactId>
        <groupId>com.itxiongmao.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>cloud-api-commons</artifactId>

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

</project>

2.1.7.Json封装体CommonResult

package com.itxiongmao.springcloud.entities;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @BelongsProject: springcloud2020
 * @BelongsPackage: com.itxiongmao.springcloud.entities
 * @CreateTime: 2020-07-07 23:36
 * @Description: TODO
 */

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T> {

    private Integer code;
    private String message;
    private T data;

    public CommonResult(Integer code, String message) {
        this(code, message, null);
    }
}

2.1.8.接口PaymentDao

package com.itxiongmao.dao;

import com.itxiongmao.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import java.util.List;

/**
 * @BelongsProject: springcloud2020
 * @BelongsPackage: com.itxiongmao.dao
 * @CreateTime: 2020-07-07 23:38
 * @Description: TODO
 */
@Mapper
public interface PaymentDao {

    /**
     * 通过ID查询单条数据
     *
     * @param id 主键
     * @return 实例对象
     */
    Payment queryById(Long id);

    /**
     * 查询指定行数据
     *
     * @param offset 查询起始位置
     * @param limit 查询条数
     * @return 对象列表
     */
    List<Payment> queryAllByLimit(@Param("offset") int offset, @Param("limit") int limit);


    /**
     * 通过实体作为筛选条件查询
     *
     * @param payment 实例对象
     * @return 对象列表
     */
    List<Payment> queryAll(Payment payment);

    /**
     * 新增数据
     *
     * @param payment 实例对象
     * @return 影响行数
     */
    int insert(Payment payment);

    /**
     * 修改数据
     *
     * @param payment 实例对象
     * @return 影响行数
     */
    int update(Payment payment);

    /**
     * 通过主键删除数据
     *
     * @param id 主键
     * @return 影响行数
     */
    int deleteById(Long id);

}

2.1.9.mybatis的映射文件PaymentDao.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.itxiongmao.dao.PaymentDao">

    <resultMap type="com.itxiongmao.springcloud.entities.Payment" id="PaymentMap">
        <result property="id" column="id" jdbcType="INTEGER"/>
        <result property="serial" column="serial" jdbcType="VARCHAR"/>
    </resultMap>

    <!--查询单个-->
    <select id="queryById" resultMap="PaymentMap" parameterType="Long">
        select
          id, serial
        from payment
        where id = #{id}
    </select>

    <!--查询指定行数据-->
    <select id="queryAllByLimit" resultMap="PaymentMap">
        select
          id, serial
        from payment
        limit #{offset}, #{limit}
    </select>

    <!--通过实体作为筛选条件查询-->
    <select id="queryAll" resultMap="PaymentMap">
        select
        id, serial
        from payment
        <where>
            <if test="id != null">
                and id = #{id}
            </if>
            <if test="serial != null and serial != ''">
                and serial = #{serial}
            </if>
        </where>
    </select>

    <!--新增所有列-->
    <insert id="insert" keyProperty="id" useGeneratedKeys="true">
        insert into payment(serial)
        values (#{serial})
    </insert>

    <!--通过主键修改数据-->
    <update id="update">
        update payment
        <set>
            <if test="serial != null and serial != ''">
                serial = #{serial},
            </if>
        </set>
        where id = #{id}
    </update>

    <!--通过主键删除-->
    <delete id="deleteById">
        delete from payment where id = #{id}
    </delete>

</mapper>

2.1.10.接口PaymentService

package com.itxiongmao.service;

import com.itxiongmao.springcloud.entities.Payment;

import java.util.List;

/**
 * @BelongsProject: springcloud2020
 * @BelongsPackage: com.itxiongmao.service
 * @CreateTime: 2020-07-07 23:48
 * @Description: TODO
 */
public interface PaymentService {

    /**
     * 通过ID查询单条数据
     *
     * @param id 主键
     * @return 实例对象
     */
    Payment queryById(Long id);

    /**
     * 查询多条数据
     *
     * @param offset 查询起始位置
     * @param limit 查询条数
     * @return 对象列表
     */
    List<Payment> queryAllByLimit(int offset, int limit);

    /**
     * 新增数据
     *
     * @param payment 实例对象
     * @return 实例对象
     */
    Payment insert(Payment payment);

    /**
     * 修改数据
     *
     * @param payment 实例对象
     * @return 实例对象
     */
    Payment update(Payment payment);

    /**
     * 通过主键删除数据
     *
     * @param id 主键
     * @return 是否成功
     */
    boolean deleteById(Long id);

}

2.1.11.接口PaymentService实现类

package com.itxiongmao.service.impl;

import com.itxiongmao.dao.PaymentDao;
import com.itxiongmao.service.PaymentService;
import com.itxiongmao.springcloud.entities.Payment;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

/**
 * @BelongsProject: springcloud2020
 * @BelongsPackage: com.itxiongmao.service.impl
 * @CreateTime: 2020-07-07 23:49
 * @Description: TODO
 */
@Service("paymentService")
public class PaymentServiceImpl implements PaymentService {
    @Resource
    private PaymentDao paymentDao;

    /**
     * 通过ID查询单条数据
     *
     * @param id 主键
     * @return 实例对象
     */
    @Override
    public Payment queryById(Long id) {
        return this.paymentDao.queryById(id);
    }

    /**
     * 查询多条数据
     *
     * @param offset 查询起始位置
     * @param limit 查询条数
     * @return 对象列表
     */
    @Override
    public List<Payment> queryAllByLimit(int offset, int limit) {
        return this.paymentDao.queryAllByLimit(offset, limit);
    }

    /**
     * 新增数据
     *
     * @param payment 实例对象
     * @return 实例对象
     */
    @Override
    public Payment insert(Payment payment) {
        this.paymentDao.insert(payment);
        return payment;
    }

    /**
     * 修改数据
     *
     * @param payment 实例对象
     * @return 实例对象
     */
    @Override
    public Payment update(Payment payment) {
        this.paymentDao.update(payment);
        return this.queryById(payment.getId());
    }

    /**
     * 通过主键删除数据
     *
     * @param id 主键
     * @return 是否成功
     */
    @Override
    public boolean deleteById(Long id) {
        return this.paymentDao.deleteById(id) > 0;
    }
}

2.1.12.controller

package com.itxiongmao.controller;

import com.itxiongmao.service.PaymentService;
import com.itxiongmao.springcloud.entities.CommonResult;
import com.itxiongmao.springcloud.entities.Payment;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * @BelongsProject: springcloud2020
 * @BelongsPackage: com.itxiongmao.controller
 * @CreateTime: 2020-07-07 23:50
 * @Description: TODO
 */
@RestController
@RequestMapping("payment")
public class PaymentController {
    /**
     * 服务对象
     */
    @Resource
    private PaymentService paymentService;

    /**
     * 通过主键查询单条数据
     *
     * @param id 主键
     * @return 单条数据
     */
    @GetMapping("get/{id}")
    public CommonResult<Payment> selectOne(@PathVariable("id") Long id) {
        Payment payment = this.paymentService.queryById(id);
        return new CommonResult<Payment>(200,"select success 8001!",payment);
    }

    @PostMapping("create")
    public CommonResult create(Payment payment) {
        Payment insert = this.paymentService.insert(payment);
        System.out.println(insert);
        System.out.println("1234567890");
        return new CommonResult(200,"insert success" ,insert);
    }
}

3.启动测试

3.1.测试访问

​​http://127.0.0.1:8001/payment/get/31​​​

3.2.postman模拟post

3.3.开启Run DashBoard

通过修改idea的workspace.xml的方式快速打开Run Dashboard窗口，开启Run DashBoard

<component name="RunDashboard">
  <option name="configurationTypes">
    <set>
      <option value="SpringBootApplicationConfigurationType" />
    </set>
  </option>
  <option name="ruleStates">
    <list>
      <RuleState>
        <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
      </RuleState>
      <RuleState>
        <option name="name" value="StatusDashboardGroupingRule" />
      </RuleState>
    </list>
  </option>
</component>

部分同学可能由于idea版本不同,需要关闭重启

4.热部署Devtools

Adding devtools to your project(添加到你的子工程)

<dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-devtools</artifactId>
     <scope>runtime</scope>
     <optional>true</optional>
 </dependency>

Adding plugin to your pom.xml(添加到你的父工程)

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <fork>true</fork>
                <addResources>true</addResources>
            </configuration>
        </plugin>
    </plugins>
</build>

Enabling automatic build

Update the value of


重启idea，测试热部署功能，修改Java代码，SpringBoot项目会重新自动重启！