【全栈之路】微服务课程2_微服务搭建

用户服务搭建

IDEA创建用户服务（File->new->project）

pom文件配置



    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.1.8.RELEASE
         
    
    com.dream
    shop-provider-user
    0.0.1-SNAPSHOT
    shop
    Demo project for Spring Boot

    
        1.8
        Greenwich.SR3
        1.0.5
        2.3
        1.2.47
    

    
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.boot
            spring-boot-starter-data-jpa
        
        
            org.springframework.cloud
            spring-cloud-function-context
        
        
            org.springframework.cloud
            spring-cloud-starter
        

        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        

        
            com.baomidou
            mybatisplus-spring-boot-starter
            ${mybatisplus-spring-boot-starter.version}
        
        
            com.baomidou
            mybatis-plus
            ${mybatis-plus.version}
        
        
            com.baomidou
            mybatis-plus-generate
            ${mybatis-plus.version}
        
        
            com.alibaba
            fastjson
            ${fastjson.version}
        

        
            mysql
            mysql-connector-java
        
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                ${spring-cloud.version}
                pom
                import
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin

相关代码

application.xml

server:
  # 指定Tomcat端口
  port: 8000

spring:
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/shop?autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=CONVERT_TO_NULL&useSSL=false&serverTimezone=UTC
    username: root
    password: root
    db-name: shop
    filters: wall,mergeStat


mybatis-plus:
  mapper-locations: classpath:mapping/*.xml
  typeAliasesPackage: com.dream.shop.model
  configuration:
    map-underscore-to-camel-case: true
    #打印sql
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

logging:
  level:
    root: INFO
    # 配置日志级别

MybatisPlusConfig.java


package com.dream.shop.config;

import com.baomidou.mybatisplus.plugins.PaginationInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * MybatisPlus配置
 *
 * @author rain
 */
@Configuration
@MapperScan(basePackages = {"com.dream.shop.dao"})
public class MybatisPlusConfig {

    /**
     * mybatis-plus分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }
}

UserController.java

package com.dream.shop.controller;

import com.dream.shop.dao.UserMapper;
import com.dream.shop.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

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

/**
 * @author rain
 */
@RequestMapping("/users")
@RestController
public class UserController {
  @Resource
  public UserMapper userMapper;

  @GetMapping("/{id}")
  public User findById(@PathVariable Long id) {
    return this.userMapper.selectById(id);
  }
}

UserMapper.xml





    
    
        
        
        
        
        
    

    
    
        id,username, name, age, balance

UserMapper.java

package com.dream.shop.dao;

import com.baomidou.mybatisplus.mapper.BaseMapper;
import com.dream.shop.model.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

/**
 * 
 * 用户 Mapper 接口
 * 
 *
 * @author it-park-team
 * @since 2018-11-29
 */
//@Mapper
public interface UserMapper extends BaseMapper {
}

User.java

package com.dream.shop.model;

import com.baomidou.mybatisplus.annotations.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import javax.persistence.*;
import java.math.BigDecimal;

/**
 * @author rain
 */
@Entity
@Data
@NoArgsConstructor
@AllArgsConstructor
@TableName("user")
public class User {
  @Id
  @GeneratedValue(strategy = GenerationType.AUTO)
  private Long id;
  @Column
  private String username;
  @Column
  private String name;
  @Column
  private Integer age;
  @Column
  private BigDecimal balance;
}

启动
http://localhost:8000/users/1

{"id":1,"username":"rain","name":"rain","age":18,"balance":2.0}

电影微服务搭建

IDEA创建同上（忽略）
** 项目目录

核心代码

MovieApplication.java

package com.dream.shop;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication//(scanBasePackages = {"com.dream.shop"})
public class MovieApplication {

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

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

}

MovieController.java

package com.dream.shop.controller;

import com.dream.shop.dao.UserMapper;
import com.dream.shop.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
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 javax.annotation.Resource;
import java.util.Optional;

/**
 * @author rain
 */
@RequestMapping("/movies")
@RestController
public class MovieController {
  @Autowired
  private RestTemplate restTemplate;

  @GetMapping("/users/{id}")
  public User findById(@PathVariable Long id) {
    // 这里用到了RestTemplate的占位符能力
    User user = this.restTemplate.getForObject("http://localhost:8000/users/{id}", User.class, id);
    // ...电影微服务的业务...
    return user;
  }
}

服务启动
http://localhost:8010/movies/users/1

{"id":1,"username":"rain","name":"rain","age":18,"balance":2.0}