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文章目录

微服务基础环境搭建【二】
- 创建会员中心微服务模块-service provider
- - 需求说明/图解
  - 思路分析/图解
  - 实现步骤
  - - 创建Moduel & 完成配置
    - - 创建member-service-provider-10000 微服务模块[提供会员服务]
      - 修改member-service-provider-10000 的pom.xml , 加入相关依赖
      - 创建resources/application.yml
      - 创建主启动类MemberApplication
    - 创建数据库/表
    - 业务实现
    - - 创建entity
      - 创建Dao
      - 创建Service
      - 创建 Controller
    - 完成测试
    - - 浏览器
      - PostMan:
    - 注意事项和细节

微服务基础环境搭建【二】

创建会员中心微服务模块-service provider

需求说明/图解

1、通过浏览器可以获取会员信息(通过会员中心微服务模块)

使用Postman 测试查询

思路分析/图解

1、创建Moduel 并完成配置

2、创建数据库/表

3、创建entity-dao/Mapper.xml-service-controller

4、完成测试

实现步骤

创建Moduel & 完成配置

创建member-service-provider-10000 微服务模块[提供会员服务]

具体操作步骤

父工程的pom.xml-会做相应变化，管理member-service-provider-10000 微服务子模块

修改member-service-provider-10000 的pom.xml , 加入相关依赖

修改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>e-commerce-center</artifactId><groupId>com.nlc.springcloud</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>member-service-provider-10000</artifactId><!--引入相关的依赖: 我们引入了当前需要的依赖，后面如果有其它需要，再灵活调整--><dependencies><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId></dependency><!-- https://mvnrepository.com/artifact/com.alibaba/druid --><dependency><groupId>com.alibaba</groupId><artifactId>druid-spring-boot-starter</artifactId><!-- 这里我们重新指定一下version --><version>1.1.13</version></dependency><!--引入web-starter 说明我们使用版本仲裁(从父项目继承了版本)--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--说明:starter-actuator 是springboot程序的监控系统, 可以实现系统的健康检测可以通过http://localhost:80/actuator 看到相关的连接,和信息--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><!--lombok--><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency><!--引入spring-boot-starter-test--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies></project>

刷新maven , 注意看引入的jar 的版本.

创建resources/application.yml

server:port: 10000spring:application:name: member-service-provider #配置应用的名称datasource:type: com.alibaba.druid.pool.DruidDataSourceurl: jdbc:mysql://localhost:3306/e_commerce_center_db?useSSL=true&useUnicode=true&characterEncoding=UTF-8username: rootpassword: 123456
#配置mybatis
mybatis:mapper-locations: classpath:mapper/*.xml #指定mapper.xml文件位置type-aliases-package: com.my.springcloud.entity # 实例类所在的包,这样通过类名就可以引用

创建主启动类MemberApplication

@SpringBootApplication
public class MemberApplication10000 {public static void main(String[] args) {SpringApplication.run(MemberApplication10000.class, args);}
}

创建数据库/表

CREATE DATABASE e_commerce_center_db
USE e_commerce_center_db
CREATE TABLE member
(
id BIGINT NOT NULL AUTO_INCREMENT COMMENT 'id',
NAME VARCHAR(64) COMMENT '用户名',
pwd CHAR(32) COMMENT '密码',
mobile VARCHAR(20) COMMENT '手机号码',
email VARCHAR(64) COMMENT '邮箱',
gender TINYINT COMMENT '性别',
PRIMARY KEY (id)
);
INSERT INTO member VALUES
(NULL, 'smith', MD5('123'), '123456789000', 'smith@sohu.com', 1);
SELECT * FROM member

业务实现

创建entity

@AllArgsConstructor
@NoArgsConstructor
@Data
//Serializable 加上，后面可能使用
public class Member implements Serializable {private Long id;private String name;private String pwd;private String mobile;private String email;private Integer gender;
}

创建com/my/springcloud/entity/Result.java

/**
* 1. 用于返回结果， 利于json 格式
* 2. 这个工具类， 在网上也可找到
*/
public class Result<T> {private String code;private String msg;private T data;public String getCode() {return code;}public void setCode(String code) {this.code = code;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public T getData() {return data;}public void setData(T data) {this.data = data;}public Result() {}public Result(T data) {this.data = data;}public static Result success() {Result result = new Result<>();result.setCode("200");result.setMsg("success");return result;}public static <T> Result<T> success(T data) {Result<T> result = new Result<>(data);result.setCode("200");result.setMsg("success");return result;}public static <T> Result<T> success(String msg, T data) {Result<T> result = new Result<>(data);result.setCode("200");result.setMsg(msg);return result;}public static Result error(String code, String msg) {Result result = new Result();result.setCode(code);result.setMsg(msg);return result;}public static <T> Result<T> error(String code, String msg, T data) {Result<T> result = new Result<>(data);result.setCode(code);result.setMsg(msg);return result;}
}

创建Dao

创建接口:com/my/springcloud/dao/MemberDao.java

@Mapper
public interface MemberDao {//crud 接口...Member queryMemberById(Long id);int save(Member member);
}

创建resources/mapper/MemberMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.my.springcloud.dao.MemberDao"><!--配置实现queryMemberById1. 这里可以使用 resultType="Member"2. 当然也可以使用resultMap="自定义的resultMap", 这里我们使用resultMap3. 如何配置一个resultMap ，在mybatis讲过的，请回顾--><resultMap id="BaseResultMap" type="Member"><id column="id" property="id" jdbcType="BIGINT"></id><id column="name" property="name" jdbcType="VARCHAR"></id><id column="pwd" property="pwd" jdbcType="VARCHAR"></id><id column="mobile" property="mobile" jdbcType="VARCHAR"></id><id column="email" property="email" jdbcType="VARCHAR"></id><id column="gender" property="gender" jdbcType="TINYINT"></id></resultMap><select id="queryMemberById" parameterType="Long" resultMap="BaseResultMap">SELECT * FROM `member` WHERE `id`=#{id}</select><!--配置实现save --><insert id="save" parameterType="Member" useGeneratedKeys="true" keyProperty="id">INSERT INTO `member`(`NAME`,`pwd`,`mobile`,`email`,`gender`)VALUES(#{name}, MD5(#{pwd}), #{mobile}, #{email}, #{gender});</insert>
</mapper>

完成测试

创建Service

创建接口:com/my/springcloud/service/MemberService.java

public interface MemberService {Member queryMemberById(Long id);int save(Member member);
}

创建com/my/springcloud/service/impl/MemberServiceImpl.java

@Service
public class MemberServiceImpl implements MemberService {//装配MemberDao@Resourceprivate MemberDao memberDao;@Overridepublic Member queryMemberById(Long id) {return memberDao.queryMemberById(id);}@Overridepublic int save(Member member) {return memberDao.save(member);}
}

完成测试

创建 Controller

创建:com/my/springcloud/controller/MemberController.java

@RestController
@Slf4j
public class MemberController {//装配MemberService@Resourceprivate MemberService memberService;//添加方法/接口//这里请小伙伴回顾, 应该如何提交//说明//1. 我们的前端如果是以json格式来发送添加信息Member， 那么我们需要使用@RequestBody//   , 才能将数据封装到对应的bean, 同时保证http的请求头的 content-type是对应//2. 如果前端是以表单形式提交了，则不需要使用@RequestBody, 才会进行对象参数封装, 同时保证//   http的请求头的 content-type是对应@PostMapping("/member/save")public Result save(@RequestBody Member member) {log.info("service-provider member={}", member);int affected = memberService.save(member);if (affected > 0) { //说明添加成功return Result.success("添加会员成功", affected);} else {return Result.error("401", "添加会员失败");}}//查询的方法/接口//这里使用url占位符+@PathVariable@GetMapping("/member/get/{id}")public Result getMemberById(@PathVariable("id") Long id, HttpServletRequest request) {//String color = request.getParameter("color");//String address = request.getParameter("address");//模拟超时, 休眠5s//try {//    TimeUnit.MILLISECONDS.sleep(5000);//} catch (InterruptedException e) {//    e.printStackTrace();//}Member member = memberService.queryMemberById(id);//使用Result把查询到的结果返回if (member != null) {//return Result.success("查询会员成功 member-service-provider-10000 " + color + "-" + address, member);return Result.success("查询会员成功 member-service-provider-10000", member);} else {return Result.error("402", "ID= " + id + "不存在");}}
}